BitBooth: POST /v1/cdp/echo

BitBooth echo endpoint — pays a tiny USDC fee, returns a JSON echo. Reference implementation of the x402 + CDP Facilitator + Bazaar discovery loop.

https://app.heinrichstech.com/v1/cdp/echo

USE THIS RESOURCE

Start with a quote-only recipe. Payment signing stays in your project.

CODE

AI CODING TOOLS

quote-check.ts

const response = await fetch("https://app.heinrichstech.com/v1/cdp/echo", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
  "type": "http",
  "method": "POST",
  "bodyType": "json",
  "bodyFieldNames": [
    "message"
  ],
  "pathParamNames": [],
  "queryParamNames": []
}),
});

console.log(response.status);
console.log(Object.fromEntries(response.headers));
console.log((await response.text()).slice(0, 1000));

// A valid 402 is a quote, not a completed paid call.

Review the provider input schema before running this non-read-only method. No payment code is included.

JSON ↗developer docs →

STATUS HISTORY

JSON RSS

Exact route checked2026-07-10 15:05 UTC
not safely testable · potentially-mutating-method:POST
Origin reachable2026-07-10 15:03 UTC
HEAD https://app.heinrichstech.com/ returned 403.
Observed in cdp-bazaar2026-07-10 13:31 UTC
The registry record was observed and retained with provenance.

EVIDENCE

cdp-bazaarobserved 2026-07-10 · https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources

origin checkHEAD https://app.heinrichstech.com/ → 403 on 2026-07-10

route quotenot invoked automatically · potentially-mutating-method:POST · 2026-07-10

Each record has an exact-route quote outcome. Unresolved templates and potentially mutating methods are labeled instead of being invoked without provider-specific test input. A quote is still separate from a settled paid call.

PAYMENT OPTIONS

eip155:8453exact1000 atomic · 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

xrpl:0exact1000 atomic · XRP

xrpl:0exact0.001000 atomic · 524C555344000000000000000000000000000000

xrpl:0exact0.001000 atomic · 5553444300000000000000000000000000000000

stellar:pubnetexact1000 atomic · XLM

stellar:pubnetexact1000 atomic · USDC

eip155:8453onchain100000000000000 atomic · 0x88Fb150BDc53A65fe94Dea0c9BA0a6dAf8C6e196

eip155:1440000onchain400000000000000 atomic · XRP