Documentation retrieval
and chat APIs.

Use your documentation in a custom assistant, in-product help, or a workflow you control.

14 days free. No credit card required.

RAG API
Request · cURL
curl https://app.biel.ai/api/v2/projects/YOUR_PROJECT/chats/ \
  -H "Authorization: Api-Key YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "message": "What sources can I connect?"
  }'
Response excerpt
{
  "ai_message": {
    "message": "Connect websites, repositories, files, and other supported documentation sources.",
    "sources": [
      {
        "title": "Supported sources",
        "url": "https://docs.biel.ai/customization/sources"
      }
    ]
  }
}

Retrieve, answer, and refresh.

Retrieve context
Get ranked documentation results with source information for your own model or workflow.
Generate answers
Request source-linked answers with streaming or buffered responses. Continue a conversation with its chat UUID.
Manage sources
On Business or Enterprise, manage sources and trigger index refresh through the API.
Review and improve
Read analytics, inspect conversations, and record feedback using the relevant endpoints.

From source to your interface.

  1. Connect documentation

    Use the same supported sources as the Biel assistant.

    Source guide
  2. Create a scoped key

    Grant the permissions your application needs. Keep write-enabled keys server-side.

    API reference
  3. Build and test

    Render answers and source links in your own application.

    Explore the endpoints
TriliTech
“Super easy to get started, reads all our sites without trouble, and helps us learn what questions our users ask.”
Tim McMakin · Technical Writer at TriliTech
Read the customer story

Questions

Which plan includes the API?

Every plan includes chat, search, and document retrieval through the API. Business adds project and source management, including refresh and sync. Compare plans.

Can we use our own model?

You can retrieve documentation through the search API and pass it to your model. Bring-your-own-model options are available on Enterprise. Review API requirements.

Build with your documentation.

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