io.github.robertoyanguas-ops/x402-audit-mcp
x402-audit-mcp
Audits any URL for HTTP 402 x402 V2 compliance, PAYMENT-REQUIRED headers, Bazaar schema, and MCP.
alive probed 2026-10-15 · HTTP 200
2tools
296tokens in Claude Opus 5.5
324tokens in Claude Code
0.1 %of a 200k context window
150o200k_base estimate
258 msto initialize
48 msto list tools
- Endpoint
- https://x402-audit-72343955726.us-central1.run.app/mcp/x402-audit (streamable-http)
- Host
- x402-audit-72343955726.us-central1.run.app
- Protocol
- 2025-03-26
- Reports itself as
- x402-audit-mcp 1.0.0
- Capabilities
- prompts, resources, tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-14. Counted again when the tool definitions change. Method.
- Registry
- active, updated 2026-10-13 · registry entry
- Reachable
- 3 of the last 3 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| audit_x402_and_a2a_endpoint | 106 | 71 % |
| get_agent_wallet_status | 44 | 29 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-15 11:07 | alive | 296 ms | 2 | 296 | 150 |
| 2026-10-14 19:20 | alive | 3.9 s | 2 | 296 | 150 |
| 2026-10-13 11:26 | alive | 258 ms | 2 | 283 | 145 |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.robertoyanguas-ops/x402-audit-mcp)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.