Algorand Developers Face Discovery and Attribution Issues with X402 Endpoints

The Algorand (ALGO) blockchain's facilitator leaderboards and Bazaar have been plagued by an issue affecting developers who use x402 endpoints to power machine-payable APIs. These endpoints, which utilize HTTP 402 Payment Required to settle payments programmatically, are critical for AI agents, APIs, and machine-to-machine commerce.

The root of the problem typically falls into one of two categories: discovery issues or attribution gaps. Discovery problems prevent endpoints from being cataloged in the Bazaar, while attribution issues mean settled payments don't count toward the Global x402 Challenge leaderboard.

To resolve these issues, developers must first ensure their endpoint is discoverable by adding a discovery extension via declareDiscoveryExtension. They can check if their endpoint is indexed by querying the discovery API and verifying that it contains their domain. If not, they can add the minimal configuration of declareDiscoveryExtension({}) to their endpoint's route configuration.

Once an endpoint is discoverable, developers must also ensure proper attribution by including the specific tag 'x402-global-challenge' in the route's configuration. This will enable their payments to be attributed to the challenge and count toward the leaderboard rankings.