diff --git a/packages/create-twenty-app/src/constants/template/.oxlintrc.json b/packages/create-twenty-app/src/constants/template/.oxlintrc.json
index 87c62c5183..369b9cfd76 100644
--- a/packages/create-twenty-app/src/constants/template/.oxlintrc.json
+++ b/packages/create-twenty-app/src/constants/template/.oxlintrc.json
@@ -15,5 +15,23 @@
       }
     ],
     "typescript/no-explicit-any": "off"
-  }
+  },
+  "overrides": [
+    {
+      "files": ["**/*.logic-function.ts", "**/logic-functions/**/*.ts"],
+      "rules": {
+        "no-restricted-imports": [
+          "error",
+          {
+            "patterns": [
+              {
+                "group": ["twenty-shared", "twenty-shared/*"],
+                "message": "Logic functions must not import from twenty-shared directly. Import runtime types and helpers from `twenty-sdk/logic-function` instead so the logic-function bundle stays minimal."
+              }
+            ]
+          }
+        ]
+      }
+    }
+  ]
 }
diff --git a/packages/twenty-apps/community/github-connector/.oxlintrc.json b/packages/twenty-apps/community/github-connector/.oxlintrc.json
index 87c62c5183..369b9cfd76 100644
--- a/packages/twenty-apps/community/github-connector/.oxlintrc.json
+++ b/packages/twenty-apps/community/github-connector/.oxlintrc.json
@@ -15,5 +15,23 @@
       }
     ],
     "typescript/no-explicit-any": "off"
-  }
+  },
+  "overrides": [
+    {
+      "files": ["**/*.logic-function.ts", "**/logic-functions/**/*.ts"],
+      "rules": {
+        "no-restricted-imports": [
+          "error",
+          {
+            "patterns": [
+              {
+                "group": ["twenty-shared", "twenty-shared/*"],
+                "message": "Logic functions must not import from twenty-shared directly. Import runtime types and helpers from `twenty-sdk/logic-function` instead so the logic-function bundle stays minimal."
+              }
+            ]
+          }
+        ]
+      }
+    }
+  ]
 }
diff --git a/packages/twenty-apps/community/github-connector/src/modules/github/contributor/logic-functions/contributor-stats.logic-function.ts b/packages/twenty-apps/community/github-connector/src/modules/github/contributor/logic-functions/contributor-stats.logic-function.ts
index cc49cc60ae..7555a3fb97 100644
--- a/packages/twenty-apps/community/github-connector/src/modules/github/contributor/logic-functions/contributor-stats.logic-function.ts
+++ b/packages/twenty-apps/community/github-connector/src/modules/github/contributor/logic-functions/contributor-stats.logic-function.ts
@@ -1,4 +1,5 @@
-import { defineLogicFunction, type RoutePayload } from 'twenty-sdk/define';
+import { defineLogicFunction } from 'twenty-sdk/define';
+import { type RoutePayload } from 'twenty-sdk/logic-function';
 import { getClient } from 'src/modules/shared/twenty-client';
 
 export type StatsPeriod = 'week' | 'month' | '3months' | 'year';
@@ -56,7 +57,11 @@ const PERIOD_CONFIG: Record<
   { granularity: Granularity; rangeMs: number; bucketCount: number }
 > = {
   week: { granularity: 'day', rangeMs: 7 * 24 * 3600 * 1000, bucketCount: 7 },
-  month: { granularity: 'day', rangeMs: 30 * 24 * 3600 * 1000, bucketCount: 30 },
+  month: {
+    granularity: 'day',
+    rangeMs: 30 * 24 * 3600 * 1000,
+    bucketCount: 30,
+  },
   '3months': {
     granularity: 'week',
     rangeMs: 13 * 7 * 24 * 3600 * 1000,
@@ -98,7 +103,10 @@ const bucketStartFor = (d: Date, granularity: Granularity): Date => {
 };
 
 const formatBucketLabel = (start: Date, granularity: Granularity): string => {
-  const month = start.toLocaleString('en-US', { month: 'short', timeZone: 'UTC' });
+  const month = start.toLocaleString('en-US', {
+    month: 'short',
+    timeZone: 'UTC',
+  });
   if (granularity === 'month') {
     return `${month} ${String(start.getUTCFullYear()).slice(2)}`;
   }
diff --git a/packages/twenty-apps/community/github-connector/src/modules/github/contributor/logic-functions/count-contributors.logic-function.ts b/packages/twenty-apps/community/github-connector/src/modules/github/contributor/logic-functions/count-contributors.logic-function.ts
index 9f291819fd..5704f40049 100644
--- a/packages/twenty-apps/community/github-connector/src/modules/github/contributor/logic-functions/count-contributors.logic-function.ts
+++ b/packages/twenty-apps/community/github-connector/src/modules/github/contributor/logic-functions/count-contributors.logic-function.ts
@@ -1,4 +1,5 @@
-import { defineLogicFunction, type RoutePayload } from 'twenty-sdk/define';
+import { defineLogicFunction } from 'twenty-sdk/define';
+import { type RoutePayload } from 'twenty-sdk/logic-function';
 import { countAcrossRepos } from 'src/modules/github/connector/count-across-repos';
 import { countContributors } from 'src/modules/github/contributor/graphql/github/count-contributors';
 
@@ -7,11 +8,7 @@ type CountContributorsPayload = {
 };
 
 const handler = async (event: RoutePayload<CountContributorsPayload>) =>
-  countAcrossRepos(
-    event.body?.repos,
-    countContributors,
-    'count-contributors',
-  );
+  countAcrossRepos(event.body?.repos, countContributors, 'count-contributors');
 
 export default defineLogicFunction({
   universalIdentifier: 'fe0a6f00-0d63-4cb9-9b3c-1d8186181830',
diff --git a/packages/twenty-apps/community/github-connector/src/modules/github/contributor/logic-functions/fetch-contributors.logic-function.ts b/packages/twenty-apps/community/github-connector/src/modules/github/contributor/logic-functions/fetch-contributors.logic-function.ts
index 9233dbe56e..0a5128aa52 100644
--- a/packages/twenty-apps/community/github-connector/src/modules/github/contributor/logic-functions/fetch-contributors.logic-function.ts
+++ b/packages/twenty-apps/community/github-connector/src/modules/github/contributor/logic-functions/fetch-contributors.logic-function.ts
@@ -1,4 +1,5 @@
-import { defineLogicFunction, type RoutePayload } from 'twenty-sdk/define';
+import { defineLogicFunction } from 'twenty-sdk/define';
+import { type RoutePayload } from 'twenty-sdk/logic-function';
 import {
   fetchContributors,
   type GqlContributor,
@@ -41,7 +42,11 @@ const handler = async (event: RoutePayload<FetchContributorsPayload>) => {
     name: c.login,
     githubId: c.databaseId ?? 0,
     avatarUrl: c.avatarUrl
-      ? { primaryLinkLabel: c.login, primaryLinkUrl: c.avatarUrl, secondaryLinks: null }
+      ? {
+          primaryLinkLabel: c.login,
+          primaryLinkUrl: c.avatarUrl,
+          secondaryLinks: null,
+        }
       : null,
   }));
 
diff --git a/packages/twenty-apps/community/github-connector/src/modules/github/contributor/logic-functions/search-contributors.logic-function.ts b/packages/twenty-apps/community/github-connector/src/modules/github/contributor/logic-functions/search-contributors.logic-function.ts
index 5074cfb65f..362fc64c04 100644
--- a/packages/twenty-apps/community/github-connector/src/modules/github/contributor/logic-functions/search-contributors.logic-function.ts
+++ b/packages/twenty-apps/community/github-connector/src/modules/github/contributor/logic-functions/search-contributors.logic-function.ts
@@ -1,4 +1,5 @@
-import { defineLogicFunction, type RoutePayload } from 'twenty-sdk/define';
+import { defineLogicFunction } from 'twenty-sdk/define';
+import { type RoutePayload } from 'twenty-sdk/logic-function';
 import {
   searchContributors,
   type ContributorSearchResult,
diff --git a/packages/twenty-apps/community/github-connector/src/modules/github/contributor/logic-functions/top-contributors.logic-function.ts b/packages/twenty-apps/community/github-connector/src/modules/github/contributor/logic-functions/top-contributors.logic-function.ts
index 6395156d40..8c79aad18b 100644
--- a/packages/twenty-apps/community/github-connector/src/modules/github/contributor/logic-functions/top-contributors.logic-function.ts
+++ b/packages/twenty-apps/community/github-connector/src/modules/github/contributor/logic-functions/top-contributors.logic-function.ts
@@ -1,4 +1,5 @@
-import { defineLogicFunction, type RoutePayload } from 'twenty-sdk/define';
+import { defineLogicFunction } from 'twenty-sdk/define';
+import { type RoutePayload } from 'twenty-sdk/logic-function';
 import { isBotLogin } from 'src/modules/github/contributor/utils/is-bot-login';
 import { getClient } from 'src/modules/shared/twenty-client';
 
@@ -107,7 +108,10 @@ const tally = (
     }
   }
   return Array.from(counts.values())
-    .sort((a, b) => b.count - a.count || (a.ghLogin ?? '').localeCompare(b.ghLogin ?? ''))
+    .sort(
+      (a, b) =>
+        b.count - a.count || (a.ghLogin ?? '').localeCompare(b.ghLogin ?? ''),
+    )
     .slice(0, limit);
 };
 
@@ -148,78 +152,82 @@ const handler = async (
   const client = getClient();
 
   const authoredResult: { items: PrNode[]; truncated: boolean } =
-    kind === 'reviewers' ? { items: [], truncated: false } : await paginateUntil<PrNode>(
-    async (cursor) => {
-      const res = await client.query({
-        pullRequests: {
-          __args: {
-            orderBy: [{ githubCreatedAt: 'DescNullsLast' }],
-            first: PAGE_SIZE,
-            after: cursor,
-          },
-          edges: {
-            node: {
-              githubCreatedAt: true,
-              author: {
-                id: true,
-                name: true,
-                ghLogin: true,
-                avatarUrl: { primaryLinkUrl: true },
+    kind === 'reviewers'
+      ? { items: [], truncated: false }
+      : await paginateUntil<PrNode>(
+          async (cursor) => {
+            const res = await client.query({
+              pullRequests: {
+                __args: {
+                  orderBy: [{ githubCreatedAt: 'DescNullsLast' }],
+                  first: PAGE_SIZE,
+                  after: cursor,
+                },
+                edges: {
+                  node: {
+                    githubCreatedAt: true,
+                    author: {
+                      id: true,
+                      name: true,
+                      ghLogin: true,
+                      avatarUrl: { primaryLinkUrl: true },
+                    },
+                  },
+                },
+                pageInfo: { hasNextPage: true, endCursor: true },
               },
-            },
+            });
+            return (
+              (res.pullRequests as Connection<PrNode>) ?? {
+                edges: [],
+                pageInfo: { hasNextPage: false, endCursor: null },
+              }
+            );
           },
-          pageInfo: { hasNextPage: true, endCursor: true },
-        },
-      });
-      return (
-        (res.pullRequests as Connection<PrNode>) ?? {
-          edges: [],
-          pageInfo: { hasNextPage: false, endCursor: null },
-        }
-      );
-    },
-    (n) => {
-      if (!n.githubCreatedAt) return false;
-      return new Date(n.githubCreatedAt).getTime() < sinceMs;
-    },
-  );
+          (n) => {
+            if (!n.githubCreatedAt) return false;
+            return new Date(n.githubCreatedAt).getTime() < sinceMs;
+          },
+        );
 
   const reviewedResult: { items: ReviewNode[]; truncated: boolean } =
-    kind === 'authors' ? { items: [], truncated: false } : await paginateUntil<ReviewNode>(
-    async (cursor) => {
-      const res = await client.query({
-        pullRequestReviews: {
-          __args: {
-            orderBy: [{ firstSubmittedAt: 'DescNullsLast' }],
-            first: PAGE_SIZE,
-            after: cursor,
-          },
-          edges: {
-            node: {
-              firstSubmittedAt: true,
-              reviewer: {
-                id: true,
-                name: true,
-                ghLogin: true,
-                avatarUrl: { primaryLinkUrl: true },
+    kind === 'authors'
+      ? { items: [], truncated: false }
+      : await paginateUntil<ReviewNode>(
+          async (cursor) => {
+            const res = await client.query({
+              pullRequestReviews: {
+                __args: {
+                  orderBy: [{ firstSubmittedAt: 'DescNullsLast' }],
+                  first: PAGE_SIZE,
+                  after: cursor,
+                },
+                edges: {
+                  node: {
+                    firstSubmittedAt: true,
+                    reviewer: {
+                      id: true,
+                      name: true,
+                      ghLogin: true,
+                      avatarUrl: { primaryLinkUrl: true },
+                    },
+                  },
+                },
+                pageInfo: { hasNextPage: true, endCursor: true },
               },
-            },
+            });
+            return (
+              (res.pullRequestReviews as Connection<ReviewNode>) ?? {
+                edges: [],
+                pageInfo: { hasNextPage: false, endCursor: null },
+              }
+            );
           },
-          pageInfo: { hasNextPage: true, endCursor: true },
-        },
-      });
-      return (
-        (res.pullRequestReviews as Connection<ReviewNode>) ?? {
-          edges: [],
-          pageInfo: { hasNextPage: false, endCursor: null },
-        }
-      );
-    },
-    (n) => {
-      if (!n.firstSubmittedAt) return false;
-      return new Date(n.firstSubmittedAt).getTime() < sinceMs;
-    },
-  );
+          (n) => {
+            if (!n.firstSubmittedAt) return false;
+            return new Date(n.firstSubmittedAt).getTime() < sinceMs;
+          },
+        );
 
   const topAuthors = tally(
     authoredResult.items.map((pr) => ({ contributor: pr.author })),
diff --git a/packages/twenty-apps/community/github-connector/src/modules/github/issue/logic-functions/count-issues.logic-function.ts b/packages/twenty-apps/community/github-connector/src/modules/github/issue/logic-functions/count-issues.logic-function.ts
index 3fe155e805..90d264aae2 100644
--- a/packages/twenty-apps/community/github-connector/src/modules/github/issue/logic-functions/count-issues.logic-function.ts
+++ b/packages/twenty-apps/community/github-connector/src/modules/github/issue/logic-functions/count-issues.logic-function.ts
@@ -1,4 +1,5 @@
-import { defineLogicFunction, type RoutePayload } from 'twenty-sdk/define';
+import { defineLogicFunction } from 'twenty-sdk/define';
+import { type RoutePayload } from 'twenty-sdk/logic-function';
 import { countAcrossRepos } from 'src/modules/github/connector/count-across-repos';
 import { countIssues } from 'src/modules/github/issue/graphql/github/count-issues';
 
diff --git a/packages/twenty-apps/community/github-connector/src/modules/github/issue/logic-functions/fetch-issues.logic-function.ts b/packages/twenty-apps/community/github-connector/src/modules/github/issue/logic-functions/fetch-issues.logic-function.ts
index 3bd014f8b9..306cee67ea 100644
--- a/packages/twenty-apps/community/github-connector/src/modules/github/issue/logic-functions/fetch-issues.logic-function.ts
+++ b/packages/twenty-apps/community/github-connector/src/modules/github/issue/logic-functions/fetch-issues.logic-function.ts
@@ -1,4 +1,5 @@
-import { defineLogicFunction, type RoutePayload } from 'twenty-sdk/define';
+import { defineLogicFunction } from 'twenty-sdk/define';
+import { type RoutePayload } from 'twenty-sdk/logic-function';
 import {
   fetchIssues,
   type GqlIssue,
@@ -65,9 +66,8 @@ const handler = async (event: RoutePayload<FetchIssuesPayload>) => {
     authorId: issue.author ? (idByLogin.get(issue.author.login) ?? null) : null,
   }));
 
-  await timed(
-    `fetch-issues:upsertIssues ${tag} (${issueData.length})`,
-    () => batchUpsertIssues(issueData),
+  await timed(`fetch-issues:upsertIssues ${tag} (${issueData.length})`, () =>
+    batchUpsertIssues(issueData),
   );
 
   const totalMs = Date.now() - handlerStart;
diff --git a/packages/twenty-apps/community/github-connector/src/modules/github/logic-functions/handle-webhook.logic-function.ts b/packages/twenty-apps/community/github-connector/src/modules/github/logic-functions/handle-webhook.logic-function.ts
index 2fd99f51df..fa2701169e 100644
--- a/packages/twenty-apps/community/github-connector/src/modules/github/logic-functions/handle-webhook.logic-function.ts
+++ b/packages/twenty-apps/community/github-connector/src/modules/github/logic-functions/handle-webhook.logic-function.ts
@@ -1,4 +1,5 @@
-import { defineLogicFunction, type RoutePayload } from 'twenty-sdk/define';
+import { defineLogicFunction } from 'twenty-sdk/define';
+import { type RoutePayload } from 'twenty-sdk/logic-function';
 import type { GitHubWebhookPayload } from 'src/modules/github/connector/webhook-payload';
 import type { ProjectV2Item } from 'src/modules/github/project-item/types/project-v2-item';
 import { fetchProjectItemByNodeId } from 'src/modules/github/project-item/graphql/github/fetch-project-item-by-node-id';
@@ -43,7 +44,9 @@ async function handlePullRequestEvent(payload: GitHubWebhookPayload) {
 
   const idByLogin = await upsertContributorsByLogin([pr.user, pr.merged_by]);
   const authorId = idByLogin.get(pr.user.login) ?? null;
-  const mergerId = pr.merged_by ? (idByLogin.get(pr.merged_by.login) ?? null) : null;
+  const mergerId = pr.merged_by
+    ? (idByLogin.get(pr.merged_by.login) ?? null)
+    : null;
 
   const canonical = pullRequestFromWebhook(pr, repository.full_name);
 
@@ -81,7 +84,9 @@ async function handlePullRequestReviewEvent(payload: GitHubWebhookPayload) {
     {
       ...prCanonical,
       authorId: idByLogin.get(pr.user.login) ?? null,
-      mergerId: pr.merged_by ? (idByLogin.get(pr.merged_by.login) ?? null) : null,
+      mergerId: pr.merged_by
+        ? (idByLogin.get(pr.merged_by.login) ?? null)
+        : null,
     },
   ]);
 
@@ -175,7 +180,8 @@ async function handleProjectV2ItemEvent(
     return { skipped: true, reason: 'delete not implemented' };
   }
 
-  const node = testProjectItem ?? (await fetchProjectItemByNodeId(item.node_id));
+  const node =
+    testProjectItem ?? (await fetchProjectItemByNodeId(item.node_id));
   if (!node) {
     return { skipped: true, reason: 'project item not found on GitHub' };
   }
diff --git a/packages/twenty-apps/community/github-connector/src/modules/github/project-item/logic-functions/count-project-items.logic-function.ts b/packages/twenty-apps/community/github-connector/src/modules/github/project-item/logic-functions/count-project-items.logic-function.ts
index 1233032516..2b96b8ce5f 100644
--- a/packages/twenty-apps/community/github-connector/src/modules/github/project-item/logic-functions/count-project-items.logic-function.ts
+++ b/packages/twenty-apps/community/github-connector/src/modules/github/project-item/logic-functions/count-project-items.logic-function.ts
@@ -1,4 +1,5 @@
-import { defineLogicFunction, type RoutePayload } from 'twenty-sdk/define';
+import { defineLogicFunction } from 'twenty-sdk/define';
+import { type RoutePayload } from 'twenty-sdk/logic-function';
 import {
   getGithubProjects,
   type GithubProject,
diff --git a/packages/twenty-apps/community/github-connector/src/modules/github/project-item/logic-functions/fetch-project-items.logic-function.ts b/packages/twenty-apps/community/github-connector/src/modules/github/project-item/logic-functions/fetch-project-items.logic-function.ts
index 712903c5a9..6222569935 100644
--- a/packages/twenty-apps/community/github-connector/src/modules/github/project-item/logic-functions/fetch-project-items.logic-function.ts
+++ b/packages/twenty-apps/community/github-connector/src/modules/github/project-item/logic-functions/fetch-project-items.logic-function.ts
@@ -1,4 +1,5 @@
-import { defineLogicFunction, type RoutePayload } from 'twenty-sdk/define';
+import { defineLogicFunction } from 'twenty-sdk/define';
+import { type RoutePayload } from 'twenty-sdk/logic-function';
 import { fetchProjectItems } from 'src/modules/github/project-item/graphql/github/fetch-project-items';
 import type { ProjectV2Item } from 'src/modules/github/project-item/types/project-v2-item';
 import { batchUpsertProjectItems } from 'src/modules/github/project-item/graphql/mutations/batch-upsert';
diff --git a/packages/twenty-apps/community/github-connector/src/modules/github/pull-request-review/logic-functions/recompute-pull-request-reviews.logic-function.ts b/packages/twenty-apps/community/github-connector/src/modules/github/pull-request-review/logic-functions/recompute-pull-request-reviews.logic-function.ts
index 277a98879f..2151dea719 100644
--- a/packages/twenty-apps/community/github-connector/src/modules/github/pull-request-review/logic-functions/recompute-pull-request-reviews.logic-function.ts
+++ b/packages/twenty-apps/community/github-connector/src/modules/github/pull-request-review/logic-functions/recompute-pull-request-reviews.logic-function.ts
@@ -1,4 +1,5 @@
-import { defineLogicFunction, type RoutePayload } from 'twenty-sdk/define';
+import { defineLogicFunction } from 'twenty-sdk/define';
+import { type RoutePayload } from 'twenty-sdk/logic-function';
 import { getClient } from 'src/modules/shared/twenty-client';
 import { timed } from 'src/modules/shared/timing';
 import { batchUpsertConsolidatedReviews } from 'src/modules/github/pull-request-review/graphql/mutations/batch-upsert';
@@ -128,9 +129,8 @@ const handler = async (_event: RoutePayload<unknown>) => {
 
   let upsertedCount = 0;
   if (rows.length > 0) {
-    const recs = await timed(
-      `recompute-reviews:upsert (${rows.length})`,
-      () => batchUpsertConsolidatedReviews(rows),
+    const recs = await timed(`recompute-reviews:upsert (${rows.length})`, () =>
+      batchUpsertConsolidatedReviews(rows),
     );
     upsertedCount = recs.length;
   }
diff --git a/packages/twenty-apps/community/github-connector/src/modules/github/pull-request/logic-functions/count-prs.logic-function.ts b/packages/twenty-apps/community/github-connector/src/modules/github/pull-request/logic-functions/count-prs.logic-function.ts
index c8fb6424e2..86b0080855 100644
--- a/packages/twenty-apps/community/github-connector/src/modules/github/pull-request/logic-functions/count-prs.logic-function.ts
+++ b/packages/twenty-apps/community/github-connector/src/modules/github/pull-request/logic-functions/count-prs.logic-function.ts
@@ -1,4 +1,5 @@
-import { defineLogicFunction, type RoutePayload } from 'twenty-sdk/define';
+import { defineLogicFunction } from 'twenty-sdk/define';
+import { type RoutePayload } from 'twenty-sdk/logic-function';
 import { countAcrossRepos } from 'src/modules/github/connector/count-across-repos';
 import { countPullRequests } from 'src/modules/github/pull-request/graphql/github/count-pull-requests';
 
diff --git a/packages/twenty-apps/community/github-connector/src/modules/github/pull-request/logic-functions/fetch-prs.logic-function.ts b/packages/twenty-apps/community/github-connector/src/modules/github/pull-request/logic-functions/fetch-prs.logic-function.ts
index 0d80f96e4e..e3d7d6777d 100644
--- a/packages/twenty-apps/community/github-connector/src/modules/github/pull-request/logic-functions/fetch-prs.logic-function.ts
+++ b/packages/twenty-apps/community/github-connector/src/modules/github/pull-request/logic-functions/fetch-prs.logic-function.ts
@@ -1,4 +1,5 @@
-import { defineLogicFunction, type RoutePayload } from 'twenty-sdk/define';
+import { defineLogicFunction } from 'twenty-sdk/define';
+import { type RoutePayload } from 'twenty-sdk/logic-function';
 import {
   fetchPullRequests,
   type GqlPullRequest,
@@ -51,7 +52,13 @@ const handler = async (event: RoutePayload<FetchPrsPayload>) => {
 
   if (prs.length === 0) {
     console.log(`[fetch-prs] empty page for ${tag}`);
-    return { prCount: 0, reviewCount: 0, totalCount, hasMore: false, endCursor: null };
+    return {
+      prCount: 0,
+      reviewCount: 0,
+      totalCount,
+      hasMore: false,
+      endCursor: null,
+    };
   }
 
   const allUsers = prs.flatMap((pr) => [
diff --git a/packages/twenty-apps/examples/hello-world/.oxlintrc.json b/packages/twenty-apps/examples/hello-world/.oxlintrc.json
index 87c62c5183..369b9cfd76 100644
--- a/packages/twenty-apps/examples/hello-world/.oxlintrc.json
+++ b/packages/twenty-apps/examples/hello-world/.oxlintrc.json
@@ -15,5 +15,23 @@
       }
     ],
     "typescript/no-explicit-any": "off"
-  }
+  },
+  "overrides": [
+    {
+      "files": ["**/*.logic-function.ts", "**/logic-functions/**/*.ts"],
+      "rules": {
+        "no-restricted-imports": [
+          "error",
+          {
+            "patterns": [
+              {
+                "group": ["twenty-shared", "twenty-shared/*"],
+                "message": "Logic functions must not import from twenty-shared directly. Import runtime types and helpers from `twenty-sdk/logic-function` instead so the logic-function bundle stays minimal."
+              }
+            ]
+          }
+        ]
+      }
+    }
+  ]
 }
diff --git a/packages/twenty-apps/examples/hello-world/src/logic-functions/post-install.ts b/packages/twenty-apps/examples/hello-world/src/logic-functions/post-install.ts
index e7a6b79a39..6ccefdccfa 100644
--- a/packages/twenty-apps/examples/hello-world/src/logic-functions/post-install.ts
+++ b/packages/twenty-apps/examples/hello-world/src/logic-functions/post-install.ts
@@ -1,6 +1,7 @@
-import { definePostInstallLogicFunction, type InstallLogicFunctionPayload } from 'twenty-sdk/define';
+import { definePostInstallLogicFunction } from 'twenty-sdk/define';
+import { type InstallPayload } from 'twenty-sdk/logic-function';
 
-const handler = async (payload: InstallLogicFunctionPayload): Promise<void> => {
+const handler = async (payload: InstallPayload): Promise<void> => {
   console.log(
     'Post install logic function executed successfully!',
     payload.previousVersion,
diff --git a/packages/twenty-apps/examples/hello-world/src/logic-functions/pre-install.ts b/packages/twenty-apps/examples/hello-world/src/logic-functions/pre-install.ts
index a6ae0f1dca..58a92a9d81 100644
--- a/packages/twenty-apps/examples/hello-world/src/logic-functions/pre-install.ts
+++ b/packages/twenty-apps/examples/hello-world/src/logic-functions/pre-install.ts
@@ -1,7 +1,11 @@
-import { definePreInstallLogicFunction, type InstallLogicFunctionPayload } from 'twenty-sdk/define';
+import { definePreInstallLogicFunction } from 'twenty-sdk/define';
+import { type InstallPayload } from 'twenty-sdk/logic-function';
 
-const handler = async (payload: InstallLogicFunctionPayload): Promise<void> => {
-  console.log('Pre install logic function executed successfully!', payload.previousVersion);
+const handler = async (payload: InstallPayload): Promise<void> => {
+  console.log(
+    'Pre install logic function executed successfully!',
+    payload.previousVersion,
+  );
 };
 
 export default definePreInstallLogicFunction({
diff --git a/packages/twenty-apps/examples/postcard/.oxlintrc.json b/packages/twenty-apps/examples/postcard/.oxlintrc.json
index 87c62c5183..369b9cfd76 100644
--- a/packages/twenty-apps/examples/postcard/.oxlintrc.json
+++ b/packages/twenty-apps/examples/postcard/.oxlintrc.json
@@ -15,5 +15,23 @@
       }
     ],
     "typescript/no-explicit-any": "off"
-  }
+  },
+  "overrides": [
+    {
+      "files": ["**/*.logic-function.ts", "**/logic-functions/**/*.ts"],
+      "rules": {
+        "no-restricted-imports": [
+          "error",
+          {
+            "patterns": [
+              {
+                "group": ["twenty-shared", "twenty-shared/*"],
+                "message": "Logic functions must not import from twenty-shared directly. Import runtime types and helpers from `twenty-sdk/logic-function` instead so the logic-function bundle stays minimal."
+              }
+            ]
+          }
+        ]
+      }
+    }
+  ]
 }
diff --git a/packages/twenty-apps/internal/exa/src/logic-functions/schemas/exa-web-search-input.schema.ts b/packages/twenty-apps/internal/exa/src/logic-functions/schemas/exa-web-search-input.schema.ts
index dcd8b1ea58..c587302765 100644
--- a/packages/twenty-apps/internal/exa/src/logic-functions/schemas/exa-web-search-input.schema.ts
+++ b/packages/twenty-apps/internal/exa/src/logic-functions/schemas/exa-web-search-input.schema.ts
@@ -1,4 +1,4 @@
-import { type InputJsonSchema } from 'twenty-shared/logic-function';
+import { type InputJsonSchema } from 'twenty-sdk/logic-function';
 
 import { DEFAULT_NUM_RESULTS } from '../constants/default-num-results.constant';
 import { EXA_CATEGORIES } from '../constants/exa-categories.constant';
diff --git a/packages/twenty-apps/internal/self-hosting/src/logic-functions/telemetryWebhook.function.ts b/packages/twenty-apps/internal/self-hosting/src/logic-functions/telemetryWebhook.function.ts
index 453679dfc5..2df303be07 100644
--- a/packages/twenty-apps/internal/self-hosting/src/logic-functions/telemetryWebhook.function.ts
+++ b/packages/twenty-apps/internal/self-hosting/src/logic-functions/telemetryWebhook.function.ts
@@ -1,4 +1,5 @@
-import { defineLogicFunction, type RoutePayload } from 'twenty-sdk/define';
+import { defineLogicFunction } from 'twenty-sdk/define';
+import { type RoutePayload } from 'twenty-sdk/logic-function';
 import { CoreApiClient } from 'twenty-client-sdk/core';
 import { type TelemetryEvent } from 'src/logic-functions/types/telemetry-event.type';
 
diff --git a/packages/twenty-apps/internal/twenty-for-twenty/src/modules/resend/sync/logic-functions/on-resend-contact-created.ts b/packages/twenty-apps/internal/twenty-for-twenty/src/modules/resend/sync/logic-functions/on-resend-contact-created.ts
index ee55dc6d09..14aafbb3ff 100644
--- a/packages/twenty-apps/internal/twenty-for-twenty/src/modules/resend/sync/logic-functions/on-resend-contact-created.ts
+++ b/packages/twenty-apps/internal/twenty-for-twenty/src/modules/resend/sync/logic-functions/on-resend-contact-created.ts
@@ -1,6 +1,10 @@
 import { isNonEmptyString } from '@sniptt/guards';
 import { CoreApiClient } from 'twenty-client-sdk/core';
-import { defineLogicFunction, type DatabaseEventPayload, type ObjectRecordCreateEvent } from 'twenty-sdk/define';
+import { defineLogicFunction } from 'twenty-sdk/define';
+import {
+  type DatabaseEventPayload,
+  type ObjectRecordCreateEvent,
+} from 'twenty-sdk/logic-function';
 import { isDefined } from '@utils/is-defined';
 
 import { ON_RESEND_CONTACT_CREATED_LOGIC_FUNCTION_UNIVERSAL_IDENTIFIER } from '@modules/resend/constants/universal-identifiers';
@@ -18,7 +22,10 @@ const handler = async (
   const { after } = event.properties;
 
   if (isNonEmptyString(after.resendId)) {
-    return { skipped: true, reason: 'record already has resendId (inbound sync)' };
+    return {
+      skipped: true,
+      reason: 'record already has resendId (inbound sync)',
+    };
   }
 
   const email = after.email?.primaryEmail;
@@ -63,11 +70,17 @@ const handler = async (
     },
   });
 
-  return { synced: true, resendId: data.id, twentyId: event.recordId, personId };
+  return {
+    synced: true,
+    resendId: data.id,
+    twentyId: event.recordId,
+    personId,
+  };
 };
 
 export default defineLogicFunction({
-  universalIdentifier: ON_RESEND_CONTACT_CREATED_LOGIC_FUNCTION_UNIVERSAL_IDENTIFIER,
+  universalIdentifier:
+    ON_RESEND_CONTACT_CREATED_LOGIC_FUNCTION_UNIVERSAL_IDENTIFIER,
   name: 'on-resend-contact-created',
   description:
     'Creates a contact in Resend when a new resendContact record is created in Twenty',
diff --git a/packages/twenty-apps/internal/twenty-for-twenty/src/modules/resend/sync/logic-functions/on-resend-contact-destroyed.ts b/packages/twenty-apps/internal/twenty-for-twenty/src/modules/resend/sync/logic-functions/on-resend-contact-destroyed.ts
index f46bb10412..c0f422d23f 100644
--- a/packages/twenty-apps/internal/twenty-for-twenty/src/modules/resend/sync/logic-functions/on-resend-contact-destroyed.ts
+++ b/packages/twenty-apps/internal/twenty-for-twenty/src/modules/resend/sync/logic-functions/on-resend-contact-destroyed.ts
@@ -1,5 +1,9 @@
 import { isNonEmptyString } from '@sniptt/guards';
-import { defineLogicFunction, type DatabaseEventPayload, type ObjectRecordDestroyEvent } from 'twenty-sdk/define';
+import { defineLogicFunction } from 'twenty-sdk/define';
+import {
+  type DatabaseEventPayload,
+  type ObjectRecordDestroyEvent,
+} from 'twenty-sdk/logic-function';
 import { isDefined } from '@utils/is-defined';
 
 import { ON_RESEND_CONTACT_DESTROYED_LOGIC_FUNCTION_UNIVERSAL_IDENTIFIER } from '@modules/resend/constants/universal-identifiers';
@@ -39,7 +43,8 @@ const handler = async (
 };
 
 export default defineLogicFunction({
-  universalIdentifier: ON_RESEND_CONTACT_DESTROYED_LOGIC_FUNCTION_UNIVERSAL_IDENTIFIER,
+  universalIdentifier:
+    ON_RESEND_CONTACT_DESTROYED_LOGIC_FUNCTION_UNIVERSAL_IDENTIFIER,
   name: 'on-resend-contact-destroyed',
   description:
     'Removes a contact from Resend when a resendContact record is permanently destroyed in Twenty',
diff --git a/packages/twenty-apps/internal/twenty-for-twenty/src/modules/resend/sync/logic-functions/on-resend-contact-updated.ts b/packages/twenty-apps/internal/twenty-for-twenty/src/modules/resend/sync/logic-functions/on-resend-contact-updated.ts
index b0efd26fc7..f881453c21 100644
--- a/packages/twenty-apps/internal/twenty-for-twenty/src/modules/resend/sync/logic-functions/on-resend-contact-updated.ts
+++ b/packages/twenty-apps/internal/twenty-for-twenty/src/modules/resend/sync/logic-functions/on-resend-contact-updated.ts
@@ -1,6 +1,10 @@
 import { isNonEmptyString } from '@sniptt/guards';
 import { CoreApiClient } from 'twenty-client-sdk/core';
-import { defineLogicFunction, type DatabaseEventPayload, type ObjectRecordUpdateEvent } from 'twenty-sdk/define';
+import { defineLogicFunction } from 'twenty-sdk/define';
+import {
+  type DatabaseEventPayload,
+  type ObjectRecordUpdateEvent,
+} from 'twenty-sdk/logic-function';
 import { isDefined } from '@utils/is-defined';
 
 import { ON_RESEND_CONTACT_UPDATED_LOGIC_FUNCTION_UNIVERSAL_IDENTIFIER } from '@modules/resend/constants/universal-identifiers';
@@ -106,7 +110,8 @@ const handler = async (
 };
 
 export default defineLogicFunction({
-  universalIdentifier: ON_RESEND_CONTACT_UPDATED_LOGIC_FUNCTION_UNIVERSAL_IDENTIFIER,
+  universalIdentifier:
+    ON_RESEND_CONTACT_UPDATED_LOGIC_FUNCTION_UNIVERSAL_IDENTIFIER,
   name: 'on-resend-contact-updated',
   description:
     'Pushes contact field changes to Resend when a resendContact record is updated in Twenty',
diff --git a/packages/twenty-apps/internal/twenty-for-twenty/src/modules/resend/sync/logic-functions/on-resend-segment-created.ts b/packages/twenty-apps/internal/twenty-for-twenty/src/modules/resend/sync/logic-functions/on-resend-segment-created.ts
index 0c7cbb62b6..2e841b4c12 100644
--- a/packages/twenty-apps/internal/twenty-for-twenty/src/modules/resend/sync/logic-functions/on-resend-segment-created.ts
+++ b/packages/twenty-apps/internal/twenty-for-twenty/src/modules/resend/sync/logic-functions/on-resend-segment-created.ts
@@ -1,6 +1,10 @@
 import { isNonEmptyString } from '@sniptt/guards';
 import { CoreApiClient } from 'twenty-client-sdk/core';
-import { defineLogicFunction, type DatabaseEventPayload, type ObjectRecordCreateEvent } from 'twenty-sdk/define';
+import { defineLogicFunction } from 'twenty-sdk/define';
+import {
+  type DatabaseEventPayload,
+  type ObjectRecordCreateEvent,
+} from 'twenty-sdk/logic-function';
 
 import { ON_RESEND_SEGMENT_CREATED_LOGIC_FUNCTION_UNIVERSAL_IDENTIFIER } from '@modules/resend/constants/universal-identifiers';
 import type { ResendSegmentRecord } from '@modules/resend/shared/types/resend-segment-record';
@@ -17,7 +21,10 @@ const handler = async (
   const { after } = event.properties;
 
   if (isNonEmptyString(after.resendId)) {
-    return { skipped: true, reason: 'record already has resendId (inbound sync)' };
+    return {
+      skipped: true,
+      reason: 'record already has resendId (inbound sync)',
+    };
   }
 
   const name = after.name;
@@ -48,7 +55,8 @@ const handler = async (
 };
 
 export default defineLogicFunction({
-  universalIdentifier: ON_RESEND_SEGMENT_CREATED_LOGIC_FUNCTION_UNIVERSAL_IDENTIFIER,
+  universalIdentifier:
+    ON_RESEND_SEGMENT_CREATED_LOGIC_FUNCTION_UNIVERSAL_IDENTIFIER,
   name: 'on-resend-segment-created',
   description:
     'Creates a segment in Resend when a new resendSegment record is created in Twenty',
diff --git a/packages/twenty-apps/internal/twenty-for-twenty/src/modules/resend/sync/logic-functions/on-resend-segment-destroyed.ts b/packages/twenty-apps/internal/twenty-for-twenty/src/modules/resend/sync/logic-functions/on-resend-segment-destroyed.ts
index 2e76516337..27eee82de6 100644
--- a/packages/twenty-apps/internal/twenty-for-twenty/src/modules/resend/sync/logic-functions/on-resend-segment-destroyed.ts
+++ b/packages/twenty-apps/internal/twenty-for-twenty/src/modules/resend/sync/logic-functions/on-resend-segment-destroyed.ts
@@ -1,5 +1,9 @@
 import { isNonEmptyString } from '@sniptt/guards';
-import { defineLogicFunction, type DatabaseEventPayload, type ObjectRecordDestroyEvent } from 'twenty-sdk/define';
+import { defineLogicFunction } from 'twenty-sdk/define';
+import {
+  type DatabaseEventPayload,
+  type ObjectRecordDestroyEvent,
+} from 'twenty-sdk/logic-function';
 import { isDefined } from '@utils/is-defined';
 
 import { ON_RESEND_SEGMENT_DESTROYED_LOGIC_FUNCTION_UNIVERSAL_IDENTIFIER } from '@modules/resend/constants/universal-identifiers';
@@ -39,7 +43,8 @@ const handler = async (
 };
 
 export default defineLogicFunction({
-  universalIdentifier: ON_RESEND_SEGMENT_DESTROYED_LOGIC_FUNCTION_UNIVERSAL_IDENTIFIER,
+  universalIdentifier:
+    ON_RESEND_SEGMENT_DESTROYED_LOGIC_FUNCTION_UNIVERSAL_IDENTIFIER,
   name: 'on-resend-segment-destroyed',
   description:
     'Removes a segment from Resend when a resendSegment record is permanently destroyed in Twenty',
diff --git a/packages/twenty-sdk/package.json b/packages/twenty-sdk/package.json
index d6e9653870..319191d372 100644
--- a/packages/twenty-sdk/package.json
+++ b/packages/twenty-sdk/package.json
@@ -37,6 +37,11 @@
       "import": "./dist/front-component/index.mjs",
       "require": "./dist/front-component/index.cjs"
     },
+    "./logic-function": {
+      "types": "./dist/logic-function/index.d.ts",
+      "import": "./dist/logic-function/index.mjs",
+      "require": "./dist/logic-function/index.cjs"
+    },
     "./ui": {
       "types": "./dist/ui/index.d.ts",
       "import": "./dist/ui/index.mjs",
@@ -111,6 +116,9 @@
       "front-component": [
         "dist/front-component/index.d.ts"
       ],
+      "logic-function": [
+        "dist/logic-function/index.d.ts"
+      ],
       "cli": [
         "dist/cli/operations/index.d.ts"
       ],
diff --git a/packages/twenty-sdk/project.json b/packages/twenty-sdk/project.json
index 4fa38db83f..6606d4f235 100644
--- a/packages/twenty-sdk/project.json
+++ b/packages/twenty-sdk/project.json
@@ -14,9 +14,9 @@
       "options": {
         "cwd": "{projectRoot}",
         "commands": [
-          "npx rimraf dist && npx vite build -c vite.config.node.ts && npx vite build -c vite.config.define.ts && npx vite build -c vite.config.billing.ts && npx vite build -c vite.config.front-component.ts && npx vite build -c vite.config.browser.ts",
+          "npx rimraf dist && npx vite build -c vite.config.node.ts && npx vite build -c vite.config.define.ts && npx vite build -c vite.config.billing.ts && npx vite build -c vite.config.front-component.ts && npx vite build -c vite.config.logic-function.ts && npx vite build -c vite.config.browser.ts",
           "tsgo -p tsconfig.lib.json --declaration --emitDeclarationOnly --noEmit false --outDir dist --rootDir src && npx tsc-alias -p tsconfig.lib.json --outDir dist",
-          "npx rimraf 'dist/sdk' 'dist/define/**/*.d.ts' 'dist/define/**/*.d.ts.map' 'dist/billing/**/*.d.ts' 'dist/billing/**/*.d.ts.map' 'dist/front-component/**/*.d.ts' 'dist/front-component/**/*.d.ts.map' && npx rollup -c rollup.config.sdk-dts.mjs"
+          "npx rimraf 'dist/sdk' 'dist/define/**/*.d.ts' 'dist/define/**/*.d.ts.map' 'dist/billing/**/*.d.ts' 'dist/billing/**/*.d.ts.map' 'dist/front-component/**/*.d.ts' 'dist/front-component/**/*.d.ts.map' 'dist/logic-function/**/*.d.ts' 'dist/logic-function/**/*.d.ts.map' && npx rollup -c rollup.config.sdk-dts.mjs"
         ],
         "parallel": false
       }
@@ -26,7 +26,7 @@
       "dependsOn": ["^build"],
       "options": {
         "cwd": "packages/twenty-sdk",
-        "command": "npx rimraf dist && npx vite build -c vite.config.node.ts && npx vite build -c vite.config.define.ts && npx vite build -c vite.config.billing.ts && npx vite build -c vite.config.front-component.ts && npx vite build -c vite.config.browser.ts && tsgo -p tsconfig.lib.json --declaration --emitDeclarationOnly --noEmit false --outDir dist --rootDir src && npx tsc-alias -p tsconfig.lib.json --outDir dist && npx rimraf 'dist/sdk' 'dist/define/**/*.d.ts' 'dist/define/**/*.d.ts.map' 'dist/billing/**/*.d.ts' 'dist/billing/**/*.d.ts.map' 'dist/front-component/**/*.d.ts' 'dist/front-component/**/*.d.ts.map' && npx rollup -c rollup.config.sdk-dts.mjs && npx vite build -c vite.config.node.ts --watch & npx vite build -c vite.config.define.ts --watch & npx vite build -c vite.config.billing.ts --watch & npx vite build -c vite.config.front-component.ts --watch & npx vite build -c vite.config.browser.ts --watch"
+        "command": "npx rimraf dist && npx vite build -c vite.config.node.ts && npx vite build -c vite.config.define.ts && npx vite build -c vite.config.billing.ts && npx vite build -c vite.config.front-component.ts && npx vite build -c vite.config.logic-function.ts && npx vite build -c vite.config.browser.ts && tsgo -p tsconfig.lib.json --declaration --emitDeclarationOnly --noEmit false --outDir dist --rootDir src && npx tsc-alias -p tsconfig.lib.json --outDir dist && npx rimraf 'dist/sdk' 'dist/define/**/*.d.ts' 'dist/define/**/*.d.ts.map' 'dist/billing/**/*.d.ts' 'dist/billing/**/*.d.ts.map' 'dist/front-component/**/*.d.ts' 'dist/front-component/**/*.d.ts.map' 'dist/logic-function/**/*.d.ts' 'dist/logic-function/**/*.d.ts.map' && npx rollup -c rollup.config.sdk-dts.mjs && npx vite build -c vite.config.node.ts --watch & npx vite build -c vite.config.define.ts --watch & npx vite build -c vite.config.billing.ts --watch & npx vite build -c vite.config.front-component.ts --watch & npx vite build -c vite.config.logic-function.ts --watch & npx vite build -c vite.config.browser.ts --watch"
       }
     },
     "start": {
@@ -93,11 +93,12 @@
       "inputs": ["{projectRoot}/src/sdk/**/*"],
       "outputs": [
         "{projectRoot}/dist/define",
-        "{projectRoot}/dist/front-component"
+        "{projectRoot}/dist/front-component",
+        "{projectRoot}/dist/logic-function"
       ],
       "options": {
         "cwd": "{projectRoot}",
-        "command": "npx vite build -c vite.config.define.ts && npx vite build -c vite.config.front-component.ts && npx rollup -c rollup.config.sdk-dts.mjs"
+        "command": "npx vite build -c vite.config.define.ts && npx vite build -c vite.config.front-component.ts && npx vite build -c vite.config.logic-function.ts && npx rollup -c rollup.config.sdk-dts.mjs"
       }
     }
   }
diff --git a/packages/twenty-sdk/rollup.config.sdk-dts.mjs b/packages/twenty-sdk/rollup.config.sdk-dts.mjs
index e1bdfd5d3b..666d6d9fd0 100644
--- a/packages/twenty-sdk/rollup.config.sdk-dts.mjs
+++ b/packages/twenty-sdk/rollup.config.sdk-dts.mjs
@@ -36,4 +36,10 @@ export default [
     external,
     plugins,
   },
+  {
+    input: 'src/sdk/logic-function/index.ts',
+    output: { file: 'dist/logic-function/index.d.ts', format: 'es' },
+    external,
+    plugins,
+  },
 ];
diff --git a/packages/twenty-sdk/src/cli/utilities/build/common/build-application.ts b/packages/twenty-sdk/src/cli/utilities/build/common/build-application.ts
index 5b453c6d99..cd38cda79f 100644
--- a/packages/twenty-sdk/src/cli/utilities/build/common/build-application.ts
+++ b/packages/twenty-sdk/src/cli/utilities/build/common/build-application.ts
@@ -12,6 +12,7 @@ import { esbuildOneShotBuild } from '@/cli/utilities/build/common/esbuild-one-sh
 import { LOGIC_FUNCTION_EXTERNAL_MODULES } from '@/cli/utilities/build/common/esbuild-watcher';
 import { getBaseFrontComponentBuildOptions } from '@/cli/utilities/build/common/front-component-build/utils/get-base-front-component-build-options';
 import { getFrontComponentBuildPlugins } from '@/cli/utilities/build/common/front-component-build/utils/get-front-component-build-plugins';
+import { createStubTwentySdkDefinePlugin } from '@/cli/utilities/build/common/plugins/stub-twenty-sdk-define.plugin';
 import { type OnFileBuiltCallback } from '@/cli/utilities/build/common/restartable-watcher-interface';
 import { type EntityFilePaths } from '@/cli/utilities/build/manifest/manifest-extract-config';
 import {
@@ -79,6 +80,7 @@ export const buildApplication = async (
       metafile: true,
       logLevel: 'silent',
       banner: NODE_ESM_CJS_BANNER,
+      plugins: [createStubTwentySdkDefinePlugin()],
     },
     onFileBuilt: collectFileBuilt,
   });
@@ -95,7 +97,10 @@ export const buildApplication = async (
       sourcemap: true,
       metafile: true,
       logLevel: 'silent',
-      plugins: [...getFrontComponentBuildPlugins()],
+      plugins: [
+        ...getFrontComponentBuildPlugins(),
+        createStubTwentySdkDefinePlugin(),
+      ],
     },
     onFileBuilt: collectFileBuilt,
   });
diff --git a/packages/twenty-sdk/src/cli/utilities/build/common/esbuild-watcher.ts b/packages/twenty-sdk/src/cli/utilities/build/common/esbuild-watcher.ts
index 32831c8d3f..c3666f3eae 100644
--- a/packages/twenty-sdk/src/cli/utilities/build/common/esbuild-watcher.ts
+++ b/packages/twenty-sdk/src/cli/utilities/build/common/esbuild-watcher.ts
@@ -2,6 +2,7 @@ import { cleanupRemovedFiles } from '@/cli/utilities/build/common/cleanup-remove
 import { processEsbuildResult } from '@/cli/utilities/build/common/esbuild-result-processor';
 import { FRONT_COMPONENT_EXTERNAL_MODULES } from '@/cli/utilities/build/common/front-component-build/constants/front-component-external-modules';
 import { getFrontComponentBuildPlugins } from '@/cli/utilities/build/common/front-component-build/utils/get-front-component-build-plugins';
+import { createStubTwentySdkDefinePlugin } from '@/cli/utilities/build/common/plugins/stub-twenty-sdk-define.plugin';
 import {
   type OnBuildErrorCallback,
   type OnFileBuiltCallback,
@@ -202,6 +203,7 @@ export const createLogicFunctionsWatcher = (
       platform: 'node',
       extraPlugins: [
         createTypecheckPlugin(options.appPath, options.shouldSkipTypecheck),
+        createStubTwentySdkDefinePlugin(),
       ],
       banner: NODE_ESM_CJS_BANNER,
     },
@@ -219,6 +221,7 @@ export const createFrontComponentsWatcher = (
       extraPlugins: [
         createTypecheckPlugin(options.appPath, options.shouldSkipTypecheck),
         ...getFrontComponentBuildPlugins(),
+        createStubTwentySdkDefinePlugin(),
       ],
     },
   });
diff --git a/packages/twenty-sdk/src/cli/utilities/build/common/plugins/__tests__/__snapshots__/stub-twenty-sdk-define.plugin.spec.ts.snap b/packages/twenty-sdk/src/cli/utilities/build/common/plugins/__tests__/__snapshots__/stub-twenty-sdk-define.plugin.spec.ts.snap
new file mode 100644
index 0000000000..c860e4176b
--- /dev/null
+++ b/packages/twenty-sdk/src/cli/utilities/build/common/plugins/__tests__/__snapshots__/stub-twenty-sdk-define.plugin.spec.ts.snap
@@ -0,0 +1,49 @@
+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
+
+exports[`stub-twenty-sdk-define plugin > matches the recorded export partition 1`] = `
+{
+  "any": [
+    "AggregateOperations",
+    "DateDisplayFormat",
+    "FieldMetadataSettingsOnClickAction",
+    "FieldType",
+    "HTTPMethod",
+    "NavigationMenuItemType",
+    "NumberDataType",
+    "ObjectRecordGroupByDateGranularity",
+    "OnDeleteAction",
+    "PageLayoutTabLayoutMode",
+    "PermissionFlag",
+    "RelationType",
+    "STANDARD_OBJECT",
+    "STANDARD_OBJECT_UNIVERSAL_IDENTIFIERS",
+    "ViewFilterGroupLogicalOperator",
+    "ViewFilterOperand",
+    "ViewKey",
+    "ViewOpenRecordIn",
+    "ViewSortDirection",
+    "ViewType",
+    "ViewVisibility",
+    "generateDefaultFieldUniversalIdentifier",
+    "getPublicAssetUrl",
+    "validateFields",
+  ],
+  "factories": [
+    "createValidationResult",
+    "defineAgent",
+    "defineApplication",
+    "defineField",
+    "defineFrontComponent",
+    "defineLogicFunction",
+    "defineNavigationMenuItem",
+    "defineObject",
+    "definePageLayout",
+    "definePageLayoutTab",
+    "definePostInstallLogicFunction",
+    "definePreInstallLogicFunction",
+    "defineRole",
+    "defineSkill",
+    "defineView",
+  ],
+}
+`;
diff --git a/packages/twenty-sdk/src/cli/utilities/build/common/plugins/__tests__/stub-twenty-sdk-define.plugin.spec.ts b/packages/twenty-sdk/src/cli/utilities/build/common/plugins/__tests__/stub-twenty-sdk-define.plugin.spec.ts
new file mode 100644
index 0000000000..f6f299e1dc
--- /dev/null
+++ b/packages/twenty-sdk/src/cli/utilities/build/common/plugins/__tests__/stub-twenty-sdk-define.plugin.spec.ts
@@ -0,0 +1,42 @@
+import * as twentySdkDefine from '@/sdk/define';
+import {
+  TWENTY_SDK_DEFINE_STUBBED_EXPORTS,
+  isDefineFactoryExportName,
+} from '@/cli/utilities/build/common/plugins/stub-twenty-sdk-define.plugin';
+
+describe('stub-twenty-sdk-define plugin', () => {
+  const realExports = Object.keys(twentySdkDefine).sort();
+  const stubbedExports = [
+    ...TWENTY_SDK_DEFINE_STUBBED_EXPORTS.factories,
+    ...TWENTY_SDK_DEFINE_STUBBED_EXPORTS.any,
+  ].sort();
+
+  it('classifies every twenty-sdk/define value-export', () => {
+    expect(stubbedExports).toEqual(realExports);
+  });
+
+  it('classifies all defineX exports (and createValidationResult) as factories', () => {
+    const expectedFactories = realExports
+      .filter(isDefineFactoryExportName)
+      .sort();
+
+    expect([...TWENTY_SDK_DEFINE_STUBBED_EXPORTS.factories].sort()).toEqual(
+      expectedFactories,
+    );
+  });
+
+  it('every factory is callable in the real module (would-be misclassification guard)', () => {
+    for (const name of TWENTY_SDK_DEFINE_STUBBED_EXPORTS.factories) {
+      const actual = (twentySdkDefine as unknown as Record<string, unknown>)[
+        name
+      ];
+      expect(typeof actual).toBe('function');
+    }
+  });
+
+  // Snapshot to surface new exports in PR review. Update with
+  // `npx vitest -u` when intentional.
+  it('matches the recorded export partition', () => {
+    expect(TWENTY_SDK_DEFINE_STUBBED_EXPORTS).toMatchSnapshot();
+  });
+});
diff --git a/packages/twenty-sdk/src/cli/utilities/build/common/plugins/stub-twenty-sdk-define.plugin.ts b/packages/twenty-sdk/src/cli/utilities/build/common/plugins/stub-twenty-sdk-define.plugin.ts
new file mode 100644
index 0000000000..8893d51fd1
--- /dev/null
+++ b/packages/twenty-sdk/src/cli/utilities/build/common/plugins/stub-twenty-sdk-define.plugin.ts
@@ -0,0 +1,90 @@
+import type * as esbuild from 'esbuild';
+
+import * as twentySdkDefine from '@/sdk/define';
+
+// Everything in twenty-sdk/define is build-time metadata for the manifest
+// extractor and is dead code in the user-app bundle. Stubbing it drops zod,
+// twenty-shared and ~1MB per logic-function bundle.
+//
+// Exports are derived from `Object.keys(twentySdkDefine)` so new ones land
+// in the stub automatically; the unit test snapshots the partition.
+// Factories must keep the `(config) => ({ config, ... })` shape so the
+// manifest extractor can still read `.config`; anything else can be a Proxy.
+export const isDefineFactoryExportName = (name: string): boolean =>
+  /^define[A-Z]/.test(name) || name === 'createValidationResult';
+
+const partitionDefineExports = (
+  mod: Record<string, unknown>,
+): { factories: readonly string[]; any: readonly string[] } => {
+  const factories: string[] = [];
+  const any: string[] = [];
+
+  for (const name of Object.keys(mod).sort()) {
+    if (isDefineFactoryExportName(name)) {
+      factories.push(name);
+    } else {
+      any.push(name);
+    }
+  }
+
+  return { factories, any };
+};
+
+export const TWENTY_SDK_DEFINE_STUBBED_EXPORTS = partitionDefineExports(
+  twentySdkDefine as unknown as Record<string, unknown>,
+);
+
+const VIRTUAL_NAMESPACE = 'twenty-sdk-define-stub';
+const STUB_RESOLVED_PATH = '__twenty-sdk-define-stub__';
+
+const STUB_PRELUDE = `
+// Auto-generated stub for twenty-sdk/define injected by the SDK CLI build.
+// Real implementations would pull in zod, twenty-shared and ~1MB of code; at
+// runtime only \`default.config.handler\` is consumed, so tiny no-ops suffice.
+const __defineFactoryStub = (config) => ({
+  success: true,
+  config,
+  errors: [],
+});
+
+const __anyHandler = {
+  get(_target, prop) {
+    if (prop === '__esModule') return true;
+    if (prop === Symbol.toPrimitive) return () => '';
+    if (typeof prop === 'symbol') return undefined;
+    return new Proxy(() => undefined, __anyHandler);
+  },
+  apply() {
+    return new Proxy(() => undefined, __anyHandler);
+  },
+};
+const __anyStub = new Proxy(() => undefined, __anyHandler);
+`;
+
+const buildStubModuleSource = (): string => {
+  const exportLines: string[] = [];
+
+  for (const name of TWENTY_SDK_DEFINE_STUBBED_EXPORTS.factories) {
+    exportLines.push(`export const ${name} = __defineFactoryStub;`);
+  }
+  for (const name of TWENTY_SDK_DEFINE_STUBBED_EXPORTS.any) {
+    exportLines.push(`export const ${name} = __anyStub;`);
+  }
+
+  return `${STUB_PRELUDE}\n${exportLines.join('\n')}\n`;
+};
+
+export const createStubTwentySdkDefinePlugin = (): esbuild.Plugin => ({
+  name: 'twenty-sdk-define-stub',
+  setup(build) {
+    build.onResolve({ filter: /^twenty-sdk\/define$/ }, () => ({
+      path: STUB_RESOLVED_PATH,
+      namespace: VIRTUAL_NAMESPACE,
+    }));
+
+    build.onLoad({ filter: /.*/, namespace: VIRTUAL_NAMESPACE }, () => ({
+      contents: buildStubModuleSource(),
+      loader: 'js',
+    }));
+  },
+});
diff --git a/packages/twenty-sdk/src/sdk/logic-function/index.ts b/packages/twenty-sdk/src/sdk/logic-function/index.ts
new file mode 100644
index 0000000000..4b238575cc
--- /dev/null
+++ b/packages/twenty-sdk/src/sdk/logic-function/index.ts
@@ -0,0 +1,39 @@
+// Runtime-facing barrel for logic-function authors.
+//
+// Anything imported from this entry point is allowed to reach the Lambda
+// runtime. Today we only re-export type-only payload shapes; all of these
+// disappear at TS compile time so the compiled bundle is empty.
+//
+// `defineLogicFunction`, `definePostInstallLogicFunction`, etc. intentionally
+// stay in `twenty-sdk/define` — they are build-time metadata factories that
+// the SDK CLI stubs out before bundling. Logic-function source files keep
+// importing them from `twenty-sdk/define`, but should reach for *types* (and
+// future runtime helpers) here, never directly from `twenty-shared/*`.
+
+export type {
+  LogicFunctionConfig,
+  LogicFunctionHandler,
+} from '@/sdk/define/logic-functions/logic-function-config';
+
+export type {
+  InstallHandler,
+  InstallPayload,
+} from '@/sdk/define/logic-functions/install-payload-type';
+
+export type { CronPayload } from '@/sdk/define/logic-functions/triggers/cron-payload-type';
+
+export type {
+  DatabaseEventPayload,
+  ObjectRecordBaseEvent,
+  ObjectRecordCreateEvent,
+  ObjectRecordDeleteEvent,
+  ObjectRecordDestroyEvent,
+  ObjectRecordEvent,
+  ObjectRecordRestoreEvent,
+  ObjectRecordUpdateEvent,
+  ObjectRecordUpsertEvent,
+} from '@/sdk/define/logic-functions/triggers/database-event-payload-type';
+
+export type { RoutePayload } from '@/sdk/define/logic-functions/triggers/route-payload-type';
+
+export type { InputJsonSchema } from 'twenty-shared/logic-function';
diff --git a/packages/twenty-sdk/vite.config.logic-function.ts b/packages/twenty-sdk/vite.config.logic-function.ts
new file mode 100644
index 0000000000..2b7e023416
--- /dev/null
+++ b/packages/twenty-sdk/vite.config.logic-function.ts
@@ -0,0 +1,65 @@
+import path from 'path';
+import { type PackageJson } from 'type-fest';
+import { defineConfig } from 'vite';
+import tsconfigPaths from 'vite-tsconfig-paths';
+
+import packageJson from './package.json';
+
+export default defineConfig(() => {
+  return {
+    root: __dirname,
+    cacheDir: '../../node_modules/.vite/packages/twenty-sdk-logic-function',
+    resolve: {
+      alias: {
+        '@/': path.resolve(__dirname, 'src') + '/',
+      },
+    },
+    plugins: [
+      tsconfigPaths({
+        root: __dirname,
+      }),
+    ],
+    build: {
+      emptyOutDir: false,
+      outDir: 'dist/logic-function',
+      sourcemap: true,
+      lib: {
+        entry: 'src/sdk/logic-function/index.ts',
+        name: 'twenty-sdk-logic-function',
+        formats: ['es', 'cjs'],
+        fileName: (format) => `index.${format === 'es' ? 'mjs' : 'cjs'}`,
+      },
+      rollupOptions: {
+        external: (id: string) => {
+          if (/^node:/.test(id)) {
+            return true;
+          }
+
+          const builtins = [
+            'child_process',
+            'crypto',
+            'fs',
+            'fs/promises',
+            'module',
+            'os',
+            'path',
+            'stream',
+            'url',
+            'util',
+          ];
+
+          if (builtins.includes(id)) {
+            return true;
+          }
+
+          const deps = Object.keys(
+            (packageJson as PackageJson).dependencies || {},
+          );
+
+          return deps.some((dep) => id === dep || id.startsWith(dep + '/'));
+        },
+      },
+    },
+    logLevel: 'warn' as const,
+  };
+});