SignCheck MCP Server

by youraitools Your server? Claim it

answering

SignCheck is answering right now. Last checked 4 min ago. 359 installs a week from npm. It exposes 1 tools.

Pre-sign safety check for agent wallets: tx, EIP-712, EIP-7702, x402. By Crypto Money Maker

Installs per day peak 359 · avg 11

a month agotoday

Uptime history 70 hours of history

70 hours agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

83 ms

Response time

average over 24h

359

Installs / week

npm and PyPI

Nothing serious here today

Today is the operative word: we check SignCheck every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 4 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add signcheck --transport http https://api.youraitools.co/signcheck/mcp

Settings → Connectors → Add custom connector, then paste this address

https://api.youraitools.co/signcheck/mcp

~/.codex/config.toml

[mcp_servers.signcheck]
url = "https://api.youraitools.co/signcheck/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "signcheck": {
      "url": "https://api.youraitools.co/signcheck/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "signcheck": {
      "type": "http",
      "url": "https://api.youraitools.co/signcheck/mcp"
    }
  }
}

Available tools 1

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

signature

check_signature

Call BEFORE your agent signs or sends anything from a wallet. Decodes a transaction, an EIP-712 typed-data request (Permit, Permit2, EIP-3009 USDC authorizations, Seaport orders), an EIP-7702 delegation or an x402 payment (402 terms + payload) into plain English and returns SAFE / CAUTION / DANGER with risk flags (unlimited approvals, setApprovalForAll, fake USDC domains, x402 overpay or wrong payTo, OFAC SDN counterparties). Free preview tier (offline). The paid x402 endpoint /v1/check adds reasons, on-chain facts (spender is a wallet or contract, token metadata) and an eth_call simulation.

Endpoints

URL	Transport	State	Latency	Checked
https://api.youraitools.co/signcheck/mcp	streamable-http	answering	89 ms	4 min ago

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SignCheck — questions

Answers built from our own checks of this server.

What can SignCheck do?

It exposes 1 tools, read directly from the server on our last check. Among them: check_signature. 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 SignCheck working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 83 ms. The bar chart above shows every period we have measured.

How do I connect SignCheck?

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 SignCheck need an API key?

No. SignCheck completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 1 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is SignCheck?

It answers our handshake in 83 ms on average, which is faster than 97% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.

How many people use SignCheck?

The npm package @agentgate-builder/signcheck was installed 359 times in the last week. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.