> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.ada.cx/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.ada.cx/_mcp/server.

# Platform API: daily rate limits removed on several endpoints, new rate limit headers

The Platform API no longer applies a daily request cap to these endpoint groups:

* End Users API (`/v2/end-users/`)
* Conversations API create, read, update, end, end-handoff, attachment, and
  messaging endpoints
* Knowledge API article endpoints (`/v2/knowledge/articles/`)

Per-minute and per-second limits stay the same for these endpoints. See the
[global rate limits](/reference/introduction/limits) and each API's own
reference page for the current values.

## New rate limit headers

The Platform API and the MCP server now return `X-RateLimit-Limit`,
`X-RateLimit-Remaining`, and `X-RateLimit-Reset` on every successful
authenticated response. A `429` response caused by rate limiting also returns
`Retry-After`. Use these headers to pace your requests and avoid hitting a
limit. See
[rate limit headers](/reference/introduction/limits#rate-limit-headers)
and
[working with rate limits](/reference/introduction/limits#working-with-rate-limits)
for details.

## MCP server limits

Since September 8, 2026, the MCP server has applied a budget per AI Agent.
An OAuth-authenticated request is budgeted per user instead of per Agent.
See the [MCP server row](/reference/introduction/limits#api-specific-rate-limits)
in the rate limits table for the current values. Today's change adds the
rate limit headers above to MCP responses. The MCP limits themselves do not
change.