## Summary Two `generateText` call sites were unbilled — identified during the 2026-04-26 incident audit: - **Thread title generation** (`AgentTitleGenerationService.generateThreadTitle`) — fires once per new chat thread; low-volume but completeness matters. - **Tool-call repair** (`repairToolCall` util, used inside `experimental_repairToolCall` callbacks) — can fire `MAX_STEPS` times per agent turn if a model gets stuck producing malformed tool calls. ## What changed - `AgentTitleGenerationService` — inject `AiBillingService`, expand `generateThreadTitle` signature to accept `workspaceId` and `userWorkspaceId`, bill in a `finally` block with `UsageOperationType.AI_CHAT_TOKEN`. Restructured so the no-default-model short-circuit happens before the `try`, avoiding a fake billing call. - `repair-tool-call.util.ts` — added an optional `billingContext` arg containing `aiBillingService`, `modelId`, `workspaceId`, `userWorkspaceId`, `operationType`. Wraps the `generateText` call in `try/finally`; bills in finally with the operation type provided by the caller. Optional so existing callers keep compiling. - `chat-execution.service.ts` — threads `billingContext` (`AI_CHAT_TOKEN`) into the repair callback. - `agent-chat.service.ts` — passes `workspaceId` and `thread.userWorkspaceId` to `generateThreadTitle`. - `agent-async-executor.service.ts` — TODO comment marking that the repair callback should thread billing once `executeAgent` accepts `workspaceId` (depends on the executeAgent-finally PR). ## Follow-up After the executeAgent-finally PR lands, `workspaceId` is in scope at the `experimental_repairToolCall` callback in `agent-async-executor.service.ts:198`. Thread `billingContext` through to fire repair-call billing for workflow agents too, and remove the TODO. Tiny follow-up. ## Test plan - [ ] Create a new chat thread; verify a `usageEvent` row is written for the title generation call. - [ ] Send a chat message that triggers tool-call repair (e.g. force a malformed tool call); verify a `usageEvent` row for the repair sub-call. ## Notes for review - `billingContext` arg made **optional** to allow incremental rollout — the executeAgent-finally PR plus a small follow-up will close the agent-async-executor side. 🤖 Generated with [Claude Code](https://claude.com/claude-code) --------- Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Why Twenty
Twenty gives technical teams the building blocks for a custom CRM that meets complex business needs and quickly adapts as the business evolves. Twenty is the CRM you build, ship, and version like the rest of your stack.
Learn more about why we built Twenty
Installation
Cloud
The fastest way to get started. Sign up at twenty.com and spin up a workspace in under a minute, with no infrastructure to manage and always up to date.
Build an app
Scaffold a new app with the Twenty CLI:
npx create-twenty-app my-app
Define objects, fields, and views as code:
import { defineObject, FieldType } from 'twenty-sdk/define';
export default defineObject({
nameSingular: 'deal',
namePlural: 'deals',
labelSingular: 'Deal',
labelPlural: 'Deals',
fields: [
{ name: 'name', label: 'Name', type: FieldType.TEXT },
{ name: 'amount', label: 'Amount', type: FieldType.CURRENCY },
{ name: 'closeDate', label: 'Close Date', type: FieldType.DATE_TIME },
],
});
Then ship it to your workspace:
npx twenty deploy
See the app development guide for objects, views, agents, and logic functions.
Self-hosting
Run Twenty on your own infrastructure with Docker Compose, or contribute locally via the local setup guide.
Everything you need
Twenty gives you the building blocks of a modern CRM (objects, views, workflows, and agents) and lets you extend them as code. Here's a tour of what's in the box.
Want to go deeper? Read the User Guide for product walkthroughs, or the
Documentation for developer reference.
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Stack
TypeScript
Nx
NestJS, with BullMQ,
PostgreSQL,
Redis
React, with Jotai, Linaria and Lingui
Thanks
Thanks to these amazing services that we use and recommend for UI testing (Chromatic), code review (Greptile), catching bugs (Sentry) and translating (Crowdin).
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