> This is the Markdown of a Backed Help Centre page, https://admin.backed.giving/help/news/2026/2026-11-09-developer-documentation.md. Every page is listed at https://admin.backed.giving/help/llms.txt.

## What's new

- **A developer site.** `https://backed.giving/developers` documents the whole Backed API: every
  read and write route with request and response examples, guides to signing in, paging, errors,
  idempotency keys, webhook signatures, Power BI and Tableau, the webhook `Event catalogue` and a
  `Changelog` of every API change with its date. It is public and needs no sign-in. See
  [Developer documentation](/integrations/developer-documentation).
- **An OpenAPI document.** The API is described in one OpenAPI 3.1 document, at your
  organisation's own address plus `/api/v2/openapi.json` and on the developer site. Developers can
  generate a client from it or import it into their API tools, and it needs no credential.
- **Pages for AI assistants.** The developer site publishes `llms.txt`, `llms-full.txt` and a
  Markdown copy of every page, so an AI assistant can read the documentation as it helps write an
  integration.
- **A link from `API Access`.** The `API Access` tab under `Settings > Profile and terms` now links
  to the developer site under `Developer documentation`. See [API access](/integrations/api-access).