Tool detail

Oblique Markets

Echoes back whatever query parameters are sent, with a server timestamp, to verify x402 payment headers and query encoding survive a round trip.

Categories: Utilities

Use when

test that x402 payment headers and query encoding work end to end
debug a paid API integration before calling a real endpoint

Not for

not useful for real data, returns only what you already sent
not a general-purpose mocking API for non-x402 use

Inputs

GET: any query parameters accepted; all are returned verbatim (no fixed schema).

Admitted input schema

{
  "type": "object",
  "properties": {},
  "required": [],
  "additionalProperties": false,
  "description": "Any query parameters; they are returned verbatim."
}

Endpoint

Method: GET
URL: https://api.oblique.markets/api/v1/paid/echo

Payment

Protocol: x402
Listed price: 0.01 USDC per call on Base
Payment method: exact
Network: eip155:8453
Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Listed terms are catalog metadata. The caller supplies inputs and calls the tool outside Onelayer. If payment is required, the caller uses a compatible wallet to pay.

Source

Directory: Coinbase x402 Bazaar
Record: GET https://api.oblique.markets/api/v1/paid/echo
Retrieved: 2026-09-30T20:37:07.382Z
Catalog file SHA-256: 6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524
Catalog built: 2026-09-30T22:31:58.034Z