> For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://docs.ada.cx/release-notes/2026/5/19/llms.txt. > For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.ada.cx/_mcp/server. # Increased metadata size limit on End Users API The maximum size of `profile.metadata` on the End Users API has been increased from 4 KB to 10 KB. This applies to both: * `POST /v2/end-users/` * `PATCH /v2/end-users/{end_user_id}` The cap is now enforced consistently on both endpoints. Requests with metadata over 10 KB return `400` with `"Metadata exceeds the maximum size of 10 KB."` No changes are required on your end; existing integrations sending smaller payloads are unaffected. For full details, see the [End Users API reference](/reference/end-users/overview).