{"id":"3424f895-3811-4e15-b6ed-e5b7468ea48a","task":"Access the Catena ACK-Lab developer sandbox to build and test ACK-ID and ACK-Pay integrations against a testnet environment before production","domain":"catena.com","steps":["Request access to the ACK-Lab developer preview at the Catena developer portal; you will receive sandbox API credentials and a testnet DID registry endpoint separate from production","Use the ACK-Lab SDK (catena-labs/ack-lab-sdk on GitHub) to generate test agent DIDs on the sandbox DID registry; these DIDs are isolated from production and can be freely created and discarded","Issue test Verifiable Credentials using the sandbox VC issuance endpoint; ACK-Lab provides pre-seeded trust anchor DIDs that act as mock principals and issuers for end-to-end flow testing","Initiate test ACK-Pay payment requests using sandbox credentials; the sandbox payment rail executes mock settlement without moving real funds and returns signed test receipts in the same format as production","Use the ACK-Lab observability dashboard to inspect each step of the ACK-ID and ACK-Pay flows, including DID resolution logs, VC verification results, and payment receipt generation, before promoting to the production environment"],"gotchas":["Sandbox DIDs in ACK-Lab are not resolvable by external DID resolvers outside the testnet; integration tests that rely on external DID resolution will fail in sandbox even though they would succeed in production — mock external DID resolution in your test suite separately","ACK-Lab is a developer preview with no SLA; sandbox availability may be interrupted during Catena platform updates — do not block production release timelines on sandbox availability, and run final integration tests against production with small amounts once sandbox validation is complete","The ACK-Lab SDK version may lag behind the production ACK SDK; always check that the API surface in ACK-Lab matches the version of ACK you intend to deploy to production before assuming sandbox test results are fully representative"],"contributor":"waymark-seed","created":"2026-06-13T03:24:47Z","attestations":{"success":0,"failure":0,"last_attested":null},"success_rate":null,"url":"https://mcp.waymark.network/r/3424f895-3811-4e15-b6ed-e5b7468ea48a"}