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.