Known limitations

Everything on this page is a real, current constraint. A documented gap is honesty; an undocumented one is a bug you found on your own.

REST API (/v1) is not live yet
This section documents Klaarin’s finalized public REST contract. Nothing under /rest is callable today — it will go live alongside the backend build. Watch this page for the announcement.
OAuth tokens expire after 30 days
There is no refresh grant. Reconnecting requires the user to re-approve on the consent screen. MCP connections and custom clients are equally affected.
Rate limits, once REST is live
REST calls will be limited to 300 requests per 15 minutes per API key, with X-RateLimit-* response headers and a 429 when exceeded — matching the limiter already protecting OAuth token and registration calls today. Not enforced yet, since the API itself isn’t live.
Claude is the only documented agent platform
Other agent walkthroughs are pending a reliable integration path. Any MCP-capable client can connect via the protocol docs today.

View example

Expired-token error

{
  "jsonrpc": "2.0",
  "id": 4,
  "error": {
    "code": -32001,
    "message": "Access token expired. Re-authorize the connection."
  }
}

REST API (/v1) is not live yet