invalid_key

​

The shape

{
  "error": {
    "type": "authentication",
    "code": "invalid_key",
    "message": "No API key matches this token.",
    "doc_url": "https://docs.fiveninelabs.com/errors/invalid_key",
    "request_id": "req_7wq20a"
  }
}

​

How to fix

• Send the key as Authorization: Bearer fn_live_… (or fn_test_…). No other auth scheme is accepted.
• Check for truncation or whitespace — keys are shown once at mint; if yours is lost, mint a new one at platform.fiveninelabs.com (minting is dashboard-only).
• Confirm which environment your process actually loaded: a fn_test_ key where you expected fn_live_ authenticates fine but never spends — an unknown-key 401 usually means the env var is empty or stale.
• Prove the fix with the $0 identity call: GET /v1/me.

​

Reproduce it

curl https://api.fiveninelabs.com/v1/me \
  -H "Authorization: Bearer fn_live_not_a_real_key"