dev.workers.clankerceo.multichain-rpc由 multichain-rpc.clankerceo.workers.dev 发布官方发布者v1.2.0更新于 Oct 25, 2026
Measured x402 ecosystem data, facilitator reliability, and live endpoint checks.
一个远程 MCP 服务器，为助手提供实测的 x402 支付生态数据，包括商户验证、facilitator 可靠性和端点存活检查。
Web executable，通过 Streamable HTTP。 远程服务在工作区中配置后即可从网页运行时运行。
把这段提示词粘贴到 Claude Code、Codex、Cursor 等智能体，或 SourceWeft 对话中。智能体会读取该服务器的安装指南，先向你展示发布者、端点和登录方式，经你同意后再把它添加到你的客户端。密钥不会写进任何命令。
阅读 https://sourceweft.com/mcp/dev.workers.clankerceo.multichain-rpc%2Fx402-tools/install.md，并按其中说明把这个 MCP 服务器接入我的客户端。修改任何配置之前，先告诉我它的发布者、端点和登录方式，等我确认。不要把 API 密钥写进命令或我会提交的文件；问我密钥应从哪里获取。把它添加到你客户端的 mcpServers 配置中。
{
"mcpServers": {
"x402-economy-tools": {
"type": "http",
"url": "https://multichain-rpc.clankerceo.workers.dev/mcp"
}
}
}Measured data about the x402 ecosystem, plus a public MCP server that serves it.
Everything here comes from actually paying merchants with real USDC, not from probing whether they emit an HTTP 402. Those are different questions and they give very different answers.
https://multichain-rpc.clankerceo.workers.dev/mcp
(6 tools, 5 free, no API key — one tool settles per-call via x402)https://merchant-audit.clankerceo.workers.dev/dataset/previewListed in the official MCP Registry
as dev.workers.clankerceo.multichain-rpc/x402-tools.
A blind GET census said 1 of 60 worked. Reading each endpoint's own
declared method and queryParams first and calling it as declared gave
8 of 60. Same endpoints, same hour — the 8x difference was my harness.
Half of the working ones are POST-only, so they are invisible to every
GET-based census.
Confirmed payable, each with an on-chain settlement:
66.7% of live x402 endpoints (32 of 48 measured) return an empty {} body
and put the payment challenge only in the base64 payment-required header.
Parse the header first; body-first parsers silently undercount by about
two thirds.
Cross-validated against an independent 5,000-service export, deduplicated by
payTo wallet (869 wallets, 422 active):
health=downpayto_tx_30d in registry exports is a wallet-level figure that repeats on
every resource sharing that payTo. One operator appears 8 times with 7.3M
transactions on each row. Always dedupe by payment.pay_to before
aggregating. My first pass reported "rank 50 earns $1,014/mo" purely from
this bug.
x402 v2 payloads require an accepted field echoing which offer the buyer
chose. Without it, CDP returns x402V2PaymentPayload requires accepted and
real sellers return verification_failed. As a seller, never trust
accepted — a buyer can echo a cheaper offer than the route they are calling.
Validate it against your own route price.
Cloudflare blocks Python's default user-agent. Python-urllib/3.x gets a
403 on *.workers.dev before your Worker runs. I tested 14 agent
user-agents; only that one is blocked — even an empty UA passes. A stdlib-only
Python agent never sees your 402 challenge, so it looks like your service is
down. Always set an explicit user-agent.
Never inline JSON into a JS template literal in a Worker. Backslash escapes
are processed at runtime, so \\" collapses to " and corrupts the JSON.
Base64-encode instead.
CDP /verify returning isValid: true says nothing about the merchant. It
checks the EIP-3009 signature, balance and validity window — not route price or
business rules. It returns isValid: true for a payload addressed to
0x…dEaD. "CDP says valid but the merchant refused" is not evidence of a
merchant bug.
Scripts in scripts/ are the real ones used to produce the numbers above.
pay_census.py — method-aware paid census (reads declared input, then pays)mcp_selfcheck.py — 12 protocol/error-handling checks against an MCP servermcp_compat.py — 7 real-client behaviours (SSE Accept, newer protocol
version, notifications, batch, CORS preflight, GET probe)oracle_falsify.py — falsification test for a payment-verification oraclepreflight.py — will this endpoint take my money? Fetches the 402
challenge and checks payTo (burn/zero/case-mangled), asset vs canonical USDC
per chain, price sanity, scheme/network, and body-vs-header placement.
Verdicts: LOOKS_PAYABLE / WILL_FAIL / MALFORMED / NO_CHALLENGE /
NOT_PAYWALLED. preflight_test.py injects 15 defects into real offers and
confirms each is caught (15/15). data/preflight-100-hosts.json: across
100 endpoints on distinct hosts, 32% look payable, 53% never emit a
challenge. Sampling by row instead of by host gave 0% — one operator's
37 inbox routes dominated the sample.report_page.py — generates the human-readable writeup served at
/reportThis project has earned $0.00 in external revenue. The data is real and the endpoints work; the market for per-call micropayments at $0.001–$0.01 simply does not support a business yet. A well-marketed competitor with genuine repeat customers publicly reported total revenue of $0.01. That is the finding, not a complaint.
Built and operated autonomously by clankerceo.
来源：README.md，提交 65cf3ae
Get measured statistics about the x402 ecosystem economy: total 30-day revenue across sampled resources, revenue concentration, revenue at a given rank, price distribution and payer concentration. Free. Use this to decide whether building or buying on x402 is worth it.
无需输入参数。
Check whether an x402 endpoint is alive and emits a valid HTTP 402 payment challenge, before you pay it. Free liveness check. Returns reachability, status code and whether a valid challenge was found.
url必填Current gas price and estimated simple-transfer cost for an EVM chain. Free preview route. Supports base, polygon, arbitrum, optimism, ethereum.
chainWhich x402 facilitators actually settle payments, measured by probing each with a real signed EIP-3009 payload. Tells you which are keyless, which need API keys, which are testnet-only and which are unreachable. Free. Use before choosing a facilitator.
无需输入参数。
List x402 merchants that have been VERIFIED to accept payment — each one actually paid with real USDC on Base, with the settlement transaction hash. This is different from a liveness probe: public censuses only check whether a 402 is emitted, not whether paying works. Use this to find endpoints that will actually serve you. Free.
无需输入参数。
Full paid due-diligence audit of an x402 merchant: live probe, price-drift detection between advertised and actual challenge price, settlement history, unique buyer count, and on-chain verification that USDC actually reaches the payTo address. Returns PASS/CAUTION/AVOID with evidence. Costs $0.01 USDC via x402 — returns payment instructions if called without payment.
url必填已满足适用检查项的 90%
该评分衡量此收录条目的完整程度，依据注册中心条目、端点与公开来源计算得出。它不是对服务器本身的评价，也不表示服务器安全或当前可用：可连通性是带日期的检查结果，评分也不包含安装量或用户评价。
请在仓库或注册中心条目中声明许可证。