# Langbase AI integration on Definable

> Langbase is a serverless AI developer platform that enables developers to build, collaborate, and deploy AI agents and applications with composable AI infrastructure.

## What this connects

Langbase is a serverless AI developer platform that enables developers to build, collaborate, and deploy AI agents and applications with composable AI infrastructure.

Vendor: https://langbase.com/

## Tools available

**20** tools available. First 12:

- `LANGBASE_APPEND_THREAD_MESSAGES` — Append Thread Messages — Tool to add new messages to an existing conversation thread. Use when continuing a chat session or adding context to a thread.
- `LANGBASE_CHECK_HEALTH` — Check API Health — Tool to check the health status of the Langbase API service. Use when you need to verify API availability.
- `LANGBASE_CHUNKER_SPLIT_CONTENT` — Split Content into Chunks — Tool to split content into smaller chunks. Use when processing large text segments to fit downstream limits.
- `LANGBASE_CREATE_THREAD` — Create Thread — Tool to create a new conversation thread. Use when starting a fresh chat session or grouping messages into a distinct thread.
- `LANGBASE_DELETE_THREAD` — Delete Thread — Tool to delete a thread that is no longer needed to manage conversation history. Use when you need to permanently remove a thread by its ID.
- `LANGBASE_DELETE_THREAD_MESSAGE` — Delete Thread Message — Tool to delete a specific message from a conversation thread. Use when you need to remove a message from a thread by its ID.
- `LANGBASE_DOCUMENT_LIST` — List Documents in Memory — Tool to list documents in a specific memory. Use when you need to fetch document metadata (and optionally vectors) from a memory after confirming its name. Supports pagination via limit and startAfter parameters.
- `LANGBASE_GET_PIPE` — Get Pipe Details — Tool to retrieve details of a specific pipe by owner and name. Use when you need to fetch configuration and settings of a particular pipe.
- `LANGBASE_GET_THREAD` — Get Thread Details — Tool to retrieve details of a specific conversation thread. Use when you need the full thread details by its ID after confirming its existence.
- `LANGBASE_LIST_MODELS` — List Available Models — Tool to get available AI models supported by Langbase. Use to discover text and image generation models from various providers.
- `LANGBASE_LIST_THREAD_MESSAGES` — List Thread Messages — Tool to list all messages in a conversation thread. Use after obtaining the thread ID to fetch its messages.
- `LANGBASE_LIST_TRACES` — List Execution Traces — Tool to get execution traces for debugging and monitoring pipe runs. Use when you need to retrieve trace logs for a specific primitive.

## Auth

Auth schemes: `API_KEY`.

## How agents use Langbase

Inside a Definable workflow, Langbase is one of the tools the **Distributor specialist** can call. Example coordination patterns:

- **Researcher → Langbase** — the Researcher (GPT-5.5) pulls context from Langbase (records, threads, documents), synthesises findings, and briefs the rest of the team.
- **Writer → Distributor → Langbase** — the Writer (Claude Opus 4.7) drafts copy in brand voice, the Verifier passes it, then the Distributor writes the result into Langbase (create record, post message, draft email).
- **Designer / Engineer → Distributor → Langbase** — the Designer ships an asset or the Engineer ships a code change, the Distributor delivers it via Langbase (attach file, open PR comment, post status).

The Verifier checks every Langbase call. On rate limit, schema drift, or auth refresh it self-heals and retries — the workflow completes without manual intervention.

## Categories

- ai agents — https://definable.ai/apps/category/ai-agents/
- developer tools — https://definable.ai/apps/category/developer-tools/

## Related

- HTML page: https://definable.ai/apps/langbase/
- Same category (ai agents): https://definable.ai/apps/category/ai-agents/
- All integrations: https://definable.ai/apps/
- Workflow (multi-agent loop): https://definable.ai/workflow/
- Apps llms.txt index: https://definable.ai/llms-apps.txt