io.github.claudeisgod/wren-presign-check

up checked 2026-11-11T06:39:45.579Z

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Publisher-provided title

Wren Pre-sign Check

Publisher-provided description

Check a tx, EIP-712 payload, text or Base token before your agent signs. Paid per call over x402.

Summary by lookupd

Screens transactions, EIP-712 payloads, untrusted text and Base tokens for risks before an agent signs or acts, paid per call.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http wren-presign-check https://wren-presign-check.wrenonbase.workers.dev/mcp

Codex, remote (streamable-http)

codex mcp add wren-presign-check --url https://wren-presign-check.wrenonbase.workers.dev/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "wren-presign-check": {
      "url": "https://wren-presign-check.wrenonbase.workers.dev/mcp"
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (4 tools)

Publisher-provided text

• presign_check Call before your agent signs anything. Send tx fields (to, data, value, chainId), or typedData (an eth_signTypedData_v4 payload), or untrusted text, with an opt
• screen_text Call before your agent acts on untrusted text (a reply, DM, web page, tool output or memory). Returns safe, suspicious or malicious with the matched patterns, a
• token_facts Call before your agent approves, receives or sends a Base ERC-20. Returns code size, EIP-7702 delegation, name, symbol, decimals, supply, proxy and upgrade admi
• presign_demo Free. Runs one fixed example (an unlimited approval, setApprovalForAll, a never-expiring permit, an EIP-7702 delegation, an injected memo or a normal x402 payme

Details

• Version: 1.4.0
• Transports: streamable-http
• Uptime (7 days): 100%
• Median latency: 218 ms
• First indexed: 2026-11-01T09:24:38.799Z
• Last seen in registry: 2026-11-01T09:24:38.799Z
• Website: https://wren-presign-check.wrenonbase.workers.dev/

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• 62141 servers
• Last crawl: 2026-11-11T18:39:04.612Z
• API base: https://api.lookupd.com
• MCP URL: https://api.lookupd.com/mcp