Authorization callback catcher

Use this page as a `redirect_uri` when testing authorize flows against an IdP. It captures query, fragment, and forwarded form-post responses.

Flow verdict

Basic conformance signals from the most recent callback response.

Response captured

Callback source

query

Stored flow context

not found

Callback Checks

Response integrity checks for the returned authorization response

1/4

Authorization response received
No callback parameters were detected yet.
State present
No state value was returned.
State matches launched flow
State comparison unavailable because no stored flow context or returned state was found.
OAuth error absent
No OAuth error parameter was returned.

{
  "query": {},
  "fragment": {}
}

This callback catcher captures authorization responses returned to oauth2.dev. It parses query and fragment parameters, highlights state mismatches, and surfaces authorization codes, access tokens, ID tokens, and error responses for conformance testing.