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mcp-x402 — MCP server for agents with autonomous USDC/RLUSD payments

by Timwal78 · remote · no sign-in to list tools · v2.3.0 · published by GitHub user Timwal78

85+ pay-per-call MCP tools: trading, federal grants/contracts, SEC, FTD. x402 USDC/RLUSD. No keys.

Read only
CompareRegistry entry

3 tools: 3 only read.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http x402 https://mcp-x402.onrender.com/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

3 tools

Only reads 3Claude Code: allow
  • sml_discoverFind the x402 Gateway contract and where to inspect fresh payment requirements.No findings

    Why it is in this group

    • The description's first verb is "find": a word for reading.
    Description, as the server wrote it
    Find the x402 Gateway contract and where to inspect fresh payment requirements. FREE.

    Annotations the server declares

    • title: Discover SML x402 Gateway
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • sml_statusCheck the public x402 Gateway identity and canonical payment rail.No findings

    Why it is in this group

    • The name "sml_status" says "status": a word for reading.
    Description, as the server wrote it
    Check the public x402 Gateway identity and canonical payment rail. FREE.

    Annotations the server declares

    • title: Inspect SML Gateway Status
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • x402_contractInspect the canonical x402 payment contract.No findings

    Why it is in this group

    • The description's first verb is "inspect": a word for reading.
    Description, as the server wrote it
    Inspect the canonical x402 payment contract. Returns network, USDC asset, payTo, headers, and the rule for resolving fresh target requirements. FREE.

    Annotations the server declares

    • title: Inspect x402 Contract
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 2.3.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http x402 https://mcp-x402.onrender.com/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__x402__sml_discover",
      "mcp__x402__sml_status",
      "mcp__x402__x402_contract"
    ],
    "ask": [],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as x402. Review it before you use it.