Signals. Infra
Error types

Invalid request

HTTP 422 · `validation` — what it means and what to do about it.

HTTP 422 · type: https://docs.signals.ai/errors/validation

The request did not match the endpoint's schema — a missing required parameter, an unknown field, or a value outside its allowed range.

What to do

Unknown fields are rejected rather than ignored, so a typo in a parameter name lands here. Validate against the endpoint schema (or the tool's inputSchema) and fix the request; do not retry it unchanged.

The response shape

Every error is RFC 9457 application/problem+json and carries a request_id, which is also returned as the X-Request-Id header on every response, success or failure. Quote it when contacting support.

{
  "type": "https://docs.signals.ai/errors/validation",
  "title": "Invalid request",
  "status": 422,
  "detail": "…",
  "request_id": "req_9f2c…",
  "instance": "/v1/…"
}

See all error types for the full catalog.

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