{"slug":"api-oblique-markets-api-v1-paid-echo-17ad5c","title":"Use when an agent is checking that its x402 payment headers and query encoding s","host":"api.oblique.markets","method":"GET","resource":"https://api.oblique.markets/api/v1/paid/echo","category":"other","description":"Use when an agent is checking that its x402 payment headers and query encoding survive a paid round trip. Returns The query parameters you sent, echoed back with a server timestamp. $0.01.","price_listed":0.01,"price_asked":0.01,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":21,"reported_calls_30d":15,"reported_payers_30d":9,"networks":["eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"description":"Any query parameters; they are returned verbatim.","properties":{},"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"echo":{"properties":{"hello":{"type":"string"},"n":{"type":"string"}},"type":"object"},"message":{"type":"string"},"timestamp":{"type":"string"}},"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-09-24","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.01,"price_match":true,"latency_ms":21,"error":null}],"description_full":"Use when an agent is checking that its x402 payment headers and query encoding survive a paid round trip. Returns The query parameters you sent, echoed back with a server timestamp. $0.01.","last_updated":"2026-09-22T06:01:56.518Z","schemes":["exact"]}