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GUIDES
Errors
Errors are RFC 7807 problem documents with stable machine-readable fields.
{
"type": "https://debt.hlhunt.org/problems/message-blocked",
"title": "Message blocked",
"status": 422,
"detail": "Message blocked by compliance rules",
"reason": "do_not_contact",
"request_id": "req_…"
}Every response carries an X-Request-Id (echoed from your request or generated) — include it when contacting support. Common statuses: 400/422 validation, 401 bad key, 403 missing scope, 404 not found (including anything belonging to another workspace), 409 conflicts, 429 rate limited.