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PennyRail Transaction Router MCP Server

by clay-swartz Your server? Claim it
not responding

PennyRail Transaction Router is listed as active in the registry but did not answer our last check. It exposes 2 tools. Last commit 5 Oct 2026.

Find and quote agent capabilities, then pay only the selected x402 execution URL.

Uptime history 69 days of history · worst day 0%
69 days agonow
0.0%
Uptime 24h
0 of 91 checks
2
Tools
read from the server
45 ms
Response time
average over 24h
0
Stars
last commit 5 Oct 2026

PennyRail Transaction Router does not always answer

Over the last week it answered 0.0% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 8 min ago.

run in your terminal
claude mcp add pennyrail --transport http https://pennyrail.vercel.app/api/mcp
Settings → Connectors → Add custom connector, then paste this address
https://pennyrail.vercel.app/api/mcp
~/.codex/config.toml
[mcp_servers.pennyrail]
url = "https://pennyrail.vercel.app/api/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "pennyrail": {
      "url": "https://pennyrail.vercel.app/api/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "pennyrail": {
      "type": "http",
      "url": "https://pennyrail.vercel.app/api/mcp"
    }
  }
}

Available tools 2

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

pennyrail
pennyrail_find
Free natural-language discovery across PennyRail's live paid capability portfolio. Returns ranked products, exact prices, input hints, and x402 execute URLs.
pennyrail_quote
Free exact quote for a PennyRail product. Returns the x402 paid execution URL, exact USD price, tier, and sample input. No payment is made by this tool.

Endpoints

URLTransportStateLatencyChecked
https://pennyrail.vercel.app/api/mcp streamable-http answering 45 ms 8 min ago

Alternatives to PennyRail Transaction Router

same job, measured the same way
SCRIPTMASTERLABS — GhostKey MCP
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Remote MCP for compliant pay-per-use agent capabilities with x402 execution.

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Flow — Base quotes & contract safety for agents
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Best-execution quotes and contract safety checks on Base for AI agents, paid per call via x402.

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QuoAPI
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Discover and execute authorized API capabilities through QuoAPI policy, routing and billing.

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Hosannaith MCP
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Check x402 endpoint reliability on Algorand before an agent routes a payment there.

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Heimdall
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Scan an MCP server or agent config for injection, exfiltration, and risky capabilities.

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Relay — agent service discovery
by chatgpt-orellise-relay-agent-services

Discover agent services, compare sourced capabilities and inspect connection evidence. No execution.

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AgentKit x402 MCP server
by workers-zenith-ops-agentkit-x402

Remote MCP tools for pay-per-call email, domain, SEO and Swedish data utilities (x402).

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PennyRail Transaction Router — questions

Answers built from our own checks of this server.

What can PennyRail Transaction Router do?
It exposes 2 tools, read directly from the server on our last check. Among them: pennyrail_find, pennyrail_quote. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is PennyRail Transaction Router working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 91 checks got a reply (0.0%), average response time 45 ms. The bar chart above shows every period we have measured.
The registry lists PennyRail Transaction Router as active — why does it not respond?
The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.
How do I connect PennyRail Transaction Router?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does PennyRail Transaction Router need an API key?
No. PennyRail Transaction Router completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 2 of them are readable on this page. This is what we observed, not what the docs claim.
Is PennyRail Transaction Router open source?
We cannot say either way: written in TypeScript and 0 stars on GitHub, but we could not determine the licence, and without one the code is not open source by default.