{"demo":true,"source":"fred/sample","series_id":"GDP","observations":[{"date":"2024-01-01","value":"sample"},{"date":"2023-01-01","value":"sample"}],"note":"Playground sample — configure FRED_API_KEY server-side for live observations.","extensions":{"bond402":{"bond_id":"bnd_7bcebd225b6f56e0","result":"pass","check_id":"ok.v1","reason":"2xx json in time","directory":"https://acp-402.scriptmasterlabs.com/x402/mesh","next":{"mesh":"https://acp-402.scriptmasterlabs.com/x402/mesh"}}}}