Félix Malfait
a505ed3245
## Rationale When message pruning can't fit the conversation into the model's context window, `chat-execution.service.ts` throws a **raw `Error`**. `mapErrorToStreamError` classifies it as generic `STREAM_EXECUTION_FAILED`, so the client renders a standard failure with a **Retry button that deterministically fails again** — the conversation doesn't get shorter by retrying. Users loop on Retry against a permanently-failing thread. ## Why this is the root cause, not a symptom patch The failure is *terminal for the thread by construction*, and the error channel already distinguishes terminal-vs-retryable via typed `AiExceptionCode`s — this failure just never got one. Adding `CONTEXT_WINDOW_EXCEEDED` (typed exception → `UserInputError` mapping instead of a 500 → both error surfaces render the start-a-new-thread message without `onRetry`) puts it on the same rails as `API_KEY_NOT_CONFIGURED` and the other special-cased codes. Both frontend error surfaces route through `AiChatErrorRenderer`, so one case covers the in-message and under-list renderings. The deeper endgame (auto-summarize/compact older turns so threads never brick) is a multi-week feature — and this typed error remains necessary even then, as its terminal fallback. ## User impact Instead of an opaque error and a Retry that never works, users hitting the context limit get told exactly what happened and what to do (start a new thread), and monitoring stops counting a user-condition as a server error. ## Test plan - [ ] CI green - [ ] Manual: fill a thread past the model limit → typed message, no Retry on either error surface https://claude.ai/code/session_01Lyi6zTema2FMVVh8MD6c38 --- _Generated by [Claude Code](https://claude.ai/code/session_01Lyi6zTema2FMVVh8MD6c38)_ <!-- This is an auto-generated description by cubic. --> <a href="https://cubic.dev/pr/twentyhq/twenty/pull/22488?utm_source=github" target="_blank" rel="noopener noreferrer" data-no-image-dialog="true"><picture><source media="(prefers-color-scheme: dark)" srcset="https://www.cubic.dev/buttons/review-in-cubic-dark.svg"><source media="(prefers-color-scheme: light)" srcset="https://www.cubic.dev/buttons/review-in-cubic-light.svg"><img alt="Review in cubic" src="https://www.cubic.dev/buttons/review-in-cubic-dark.svg"></picture></a> <!-- End of auto-generated description by cubic. -->
The #1 Open-Source CRM
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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 app:publish --private
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
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NestJS, with BullMQ, 
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React, with Jotai, Linaria and Lingui
Thanks
Thanks to these amazing services that we use and recommend for code review (Greptile), catching bugs (Sentry) and translating (Crowdin).
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