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Horizon Pulse · horizonpulse.dev

X402 developer tool

Use before paying an unknown x402 endpoint, or to debug your own. GET with required url (optional method GET/POST, body JSON for POST probes). Sends one unpaid request and never pays. Returns JSON: httpStatus, isX402, x402Version, decoded accepts (network, asset label, amount in USD, payTo and whether payTo is an EOA or contract), discovery metadata presence, and pass/warn/fail checks with a summary. Private targets are blocked. Errors are not charged.

Ready now4 calls · 2 buyers in 30 days

Input

Optional JSON body (<=8KB, URL-encoded) sent with a POST probe, for endpoints that validate input before returning 402. Implies POST.
HTTP method for the unpaid probe: GET (default; one POST retry on 405) or POST.
Absolute http(s) URL of the x402 endpoint to audit (required). Private/localhost blocked.

Sample response

Published by the provider. Your run returns a fresh response.

response12 keys
accepts1 item
challengeSource"header"
checks5 items
discovery4 keys
hasInputSchematrue
hasOutputExampletrue
method"GET"
presenttrue
elapsedMs201
httpStatus402
isX402true
method"GET"
oktrue
summary3 keys
fail0
pass4
warn0
target"https://horizonpulse.dev/api/pulse"
x402Version2
responseobject, 12 keys
Your agent can do this on its own
Add the MCP URL in Claude Code, Cursor or Codex. Your agent can run Tools within its spending limits, or ask for approval each time. Connect your agent

Connect your agent

Add one MCP URL and your agent can find and run this tool within its spending limits. Choose “Ask each time” if you want to approve every Call.

MCP URL

https://app.aecon.ai/mcp
Terminalbash
claude mcp add --transport http --scope user agentic-economy "https://app.aecon.ai/mcp"

In Claude Code, open /mcp, select agentic-economy, then choose Authenticate.

Track record

Paid calls, last 30 days
4
Buyers, last 30 days
2
Last paid call

Reported by the x402 directory.

A$0.015 per call