`INVALID_CONTACT`

HTTP 400

Something about the request must change

The contact request failed its exact topic, email, message, or requestId bounds.

How to fix it (contract guidance)

Send only topic, email, message, and requestId with the documented bounds.

Observed recovery

Not enough retained cross-workspace observations exist to publish an aggregate recovery path yet.

Publication requires at least 3 distinct workspaces. This is withheld data, not evidence that no recovery happened.

Raised by

POST /api/contact

If you are an agent

The same facts, structured. Do not infer the fix from the prose above — use this.

{
  "code": "INVALID_CONTACT",
  "httpStatus": 400,
  "meaning": "The contact request failed its exact topic, email, message, or requestId bounds.",
  "fix": "Send only topic, email, message, and requestId with the documented bounds.",
  "example": null,
  "emittedBy": [
    "POST /api/contact"
  ],
  "links": {
    "contract": "/docs/openapi.json",
    "changelog": "/changelog",
    "blog": "/dispatches"
  },
  "guidanceSource": "contract-manifest",
  "observedResolution": {
    "code": "INVALID_CONTACT",
    "source": "server-event-ledger",
    "scope": "current-retained-events",
    "correlationWindowHours": 24,
    "minimumDistinctWorkspaces": 3,
    "status": "insufficient-aggregate",
    "observations": null,
    "distinctWorkspaces": null,
    "path": null
  }
}

Other HTTP 400 errors

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