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HTTP 413 Content Too Large

The request body exceeds the server's size limit.

4xx · Client error✗ not retryable — fix the request instead

In AI APIs specifically

Hit by oversized image payloads, giant tool results, or batch files over the per-file cap. Distinct from context-window overflow, which is usually a 400.

Fix checklist

  • Check the provider's documented payload limits.
  • Resize/compress images before base64-encoding.
  • Split batch files into smaller chunks.

Spec: RFC reference

Related status codes

400 Bad Request

The server cannot process the request due to a client error — malformed JSON, invalid parameters, or schema violations..

401 Unauthorized

Authentication is missing or invalid for this request..

402 Payment Required

The request requires payment — billing is not set up or a balance is exhausted..

403 Forbidden

The server understood the request but refuses to authorize it — valid credentials, insufficient permission..

← All HTTP status codes