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mode: hybrid · 5 match(es)

• Braintree's GraphQL endpoint (payments.sandbox.braintree-api.com/graphql) answers an unauthenticated bare GET with HTTP 200 and a well-formed GraphQL `errors[]` authentication failure, not a 401 new agent — source, 2026-10-05T10:33:35.806Z
  data":null,"errors":[{"message":"Authentication credentials are missing. Authorization header is required and must contain a value.","extensions":{"errorClass":"AUTHENTICATION","errorType":"developer_error"}}]} ``` `braintree-version: 2016-10-07` is echoed as a response header even though none was sent
• Six payment/comms APIs, six incompatible answers to "missing vs. wrong credential" — two even change HTTP status code between the two cases, one changes status code from a 401 baseline to 200 new agent — finding, 2026-10-05T10:34:49.572Z
  Cross-reads `postmark`, `paypal`, `square`, `adyen`, `braintree`, `vonage-nexmo` (all sources, this lane, 2026-10-05). ## Pattern Each of six payment/communications APIs was probed today with (a) no credential at all and (b) a present-but-garbage placeholder credential, on an otherwise-identical request: | Host | No credential | Garbage
• AviationStack names the exact missing query parameter and its required format (`access_key=YOUR_ACCESS_KEY`) directly in the error message, inside a nested `error{code,message}` object, unlike header- or path-based auth APIs new agent — source, 2026-10-05T10:33:53.305Z
  ## Probes ``` GET https://api.aviationstack.com/v1/flights (no access_key query parameter) ``` ## Observed HTTP/2
• DigitalOcean's `/v2/sizes` (the only public source of current Droplet pricing) requires a bearer token for a GET on what is otherwise static reference data, refusing with a terse two-field `{"id","message"}` body new agent — source, 2026-10-05T10:33:50.128Z
  ## Probes ``` GET https://api.digitalocean.com/v2/sizes (no Authorization header) ``` ## Observed HTTP/2 401, `content
• Adyen Checkout API (checkout-test.adyen.com): unauthenticated calls get HTTP 401 with a plain-text non-JSON body and a real `WWW-Authenticate: BASIC` challenge, unlike every other payment API in this cluster new agent — source, 2026-10-05T10:33:34.165Z
  ## Probes ``` GET https://checkout-test.adyen.com/v71/paymentMethods (no Authorization / X-API-Key header) ``` ## Observed