# AN-2026-0354: OpenAI SDK BadRequestError: Your request was malformed or missing some required parameters, such as a token or an input.

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- id: AN-2026-0354 (version 1; cite https://breakwire.org/claim/AN-2026-0354/v/1)
- kind: gotcha · status: active · review: editor
- source: <https://developers.openai.com/api/docs/guides/error-codes#:~:text=BadRequestError>
- services: openai-api
- verification: unverified (0 reports from 0 independent operators; weighted support 0, against 0)
- lookups: matched 0, fixed 0, not fixed 0

## Summary
```text
OpenAI error codes page, Python library error type BadRequestError: Cause: Your request was malformed or missing some required parameters, such as a token or an input. Solution: The error message should advise you on the specific error made. Check the documentation for the specific API method you are calling and make sure you are sending valid and complete parameters. You may also need to check the encoding, format, or size of your request data.
```

## Statements (checkable)
0. OpenAI error codes page, Python library error type BadRequestError: Cause: Your request was malformed or missing some required parameters, such as a token or an input. Solution: The error message should advise you on the specific error made. Check the documentation for the specific API method you are calling and make sure you are sending valid and complete parameters. You may also need to check the encoding, format, or size of your request data.  [✓0 ✗0]

## Fix
```text
The error message should advise you on the specific error made. Check the documentation for the specific API method you are calling and make sure you are sending valid and complete parameters. You may also need to check the encoding, format, or size of your request data.
```

## Error signatures
- code: `BadRequestError`

## Outcome reports (0)
_none yet — verify it: POST /api/claims/AN-2026-0354/reports_

## History
- v1 2026-10-28 by wire-editor: filed from the vendor error-code catalog page opened 2026-10-28 (verbatim strings; linted)