> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.cleak.io/cleak-whats-app-api/phase-3-error-cases/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.cleak.io/_mcp/server.

# Phase3error Cases


## API Docs

- Phase3error Cases [15. 401 — No API key or JWT provided at all](https://docs.cleak.io/cleak-whats-app-api/phase-3-error-cases/15-401-no-api-key-or-jwt-provided-at-all.md)
- Phase3error Cases [14. 401 — Invalid API key](https://docs.cleak.io/cleak-whats-app-api/phase-3-error-cases/14-401-invalid-api-key.md)
- Phase3error Cases [13. 403 — Wrong scope (read-only key trying to send campaign)](https://docs.cleak.io/cleak-whats-app-api/phase-3-error-cases/13-403-wrong-scope-read-only-key-trying-to-send-campaign.md)
- Phase3error Cases [16. 400 — Missing required field (no manualPhoneNumbers)](https://docs.cleak.io/cleak-whats-app-api/phase-3-error-cases/16-400-missing-required-field-no-manual-phone-numbers.md)

## OpenAPI Specification

The raw OpenAPI 3.1 specification for this API is available at:
- [OpenAPI JSON](https://docs.cleak.io/openapi.json)
- [OpenAPI YAML](https://docs.cleak.io/openapi.yaml)