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## Summary
Lets a Twenty application add **view fields (columns) to an existing
view it does not own** — including standard views like the People index
view — without redeclaring/owning that view. This mirrors the existing,
working pattern by which an app adds a custom field to a standard object
via `defineField` + `objectUniversalIdentifier`.
The asymmetry being removed was purely in the manifest schema:
`ViewFieldManifest` only existed *nested* inside
`ViewManifest.fields[]`, so adding a view field forced declaring a
`ViewManifest` — which the sync treats as a view the app creates and
owns, and rejects when the UID is a standard view's. Validation,
persistence, the FK aggregator machinery, and uninstall cleanup were
already generic and cross-app-safe, so no engine changes were needed.
### Changes
- **twenty-shared:** new top-level `StandaloneViewFieldManifest`
(`ViewFieldManifest & { viewUniversalIdentifier }`),
`Manifest.viewFields`, and a `SyncableEntity.ViewField` member.
- **twenty-sdk:** `defineViewField` (validates `universalIdentifier` +
`viewUniversalIdentifier` + `fieldMetadataUniversalIdentifier`), CLI
manifest assembly of a top-level `viewFields` list, and `dev:add
viewField` scaffolding.
- **twenty-server:** one top-level loop over `manifest.viewFields` that
reuses the existing `fromViewFieldManifestToUniversalFlatViewField`
converter (already parameterized by `viewUniversalIdentifier`). No
validator/persistence/aggregator changes.
### Notes for maintainers
- Confirm the `Manifest.viewFields` optionality convention — implemented
as a **required** array to mirror `fields`/`views`.
- Two different apps adding a column for the same field to the same view
conflicts on the existing unique `(fieldMetadataId, viewId)` partial
index; the existing `flat-view-field-validator` duplicate check surfaces
this as a structured validation error.
- `dev:add viewField` scaffolding is included (was optional in the
plan).
## Test Plan
- [x] `twenty-shared` typecheck
- [x] `twenty-sdk` 364 unit tests + `buildManifest` assembly test
(rich-app fixture) + typecheck + prettier
- [x] `twenty-server` typecheck + `lint:diff-with-main`
- [x] **Server integration suite**
`successful-manifest-update-view-field.integration-spec.ts` (4/4):
- standalone view field attaches to the standard `allPeople` view
without recreating it (sync succeeds, no
`INVALID_VIEW_DATA`/`ENTITY_ALREADY_EXISTS`)
- uninstall removes the contributed column while the standard view + its
columns remain intact
- duplicate `(view, field)` rejected with `METADATA_VALIDATION_FAILED`
- unknown target view rejected
- [x] Sibling `successful-manifest-update-field.integration-spec.ts`
still green (no harness regression)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
A CLI and SDK to develop, build, and publish applications that extend Twenty CRM.
Quick start
The recommended way to start is with create-twenty-app:
npx create-twenty-app@latest my-twenty-app
cd my-twenty-app
yarn twenty dev
Documentation
Full documentation is available at docs.twenty.com/developers/extend/apps:
- Getting Started — scaffolding, local server, authentication, dev mode
- Building Apps — entity definitions, API clients, testing, CLI reference
- Publishing — deploy, npm publish, marketplace
Manual installation
If you are adding twenty-sdk to an existing project instead of using create-twenty-app:
yarn add twenty-sdk twenty-client-sdk
Then add a twenty script to your package.json:
{
"scripts": {
"twenty": "twenty"
}
}
Run yarn twenty help to see all available commands.
Configuration
The CLI stores credentials per remote in ~/.twenty/config.json. Run yarn twenty remote:add to configure a remote, or yarn twenty remote:list to see existing ones.
Troubleshooting
- Auth errors: run
yarn twenty remote:addto re-authenticate. - Typings out of date: restart
yarn twenty devto refresh the client and types. - Not seeing changes in dev: make sure dev mode is running (
yarn twenty dev).
Contributing
Development setup
git clone https://github.com/twentyhq/twenty.git
cd twenty
yarn install
Development mode
npx nx run twenty-sdk:dev
Production build
npx nx run twenty-sdk:build
Running the CLI locally
npx nx run twenty-sdk:start -- <command>