Quietforge x402 Tools: MCP server (Other) in 2026

Free tools: x402 endpoint directory + probe, on-chain x402 demand signal, sudoku, API pricing.

Verified working on 2026-10-27 Rank 50 of 102 in Other. Source: MCP Registry record, checked 2026-10-27.

Key facts

Type	MCP server, remote (streamable HTTP)
Category	Other
Endpoint	https://qf-api.quietforge-studio.workers.dev/mcp
Registry name	io.github.quietforgestudio/x402-tools
Version (registry)	1.3.0
Published in registry	2026-10-07
Registry record updated	2026-10-07
Repository	https://github.com/quietforgestudio/qf-mcp-server
Website	https://quietforge-studio.pages.dev/docs-api/
Authentication	None needed for initialize and tools/list (checked anonymously)
Latest check	Up on 2026-10-27, 470 ms to initialize
Tools listed	7
Checks passed	1 of 1 daily checks
Last verified working	2026-10-27
Source	https://registry.modelcontextprotocol.io/v0/servers/io.github.quietforgestudio%2Fx402-tools/versions/latest (pulled 2026-10-27)

Tools (7)

x402_search, x402_service, x402_index_stats, x402_demand, x402_probe, sudoku_puzzle, quietforge_pricing

Verification history

One probe a day: initialize, then tools/list, nothing else. Last 1 checks: 10-27 up

Install

Claude Code

claude mcp add --transport http x402-tools https://qf-api.quietforge-studio.workers.dev/mcp

Claude (claude.ai, Desktop)

Settings > Connectors > Add custom connector. Name: Quietforge x402 Tools. URL: https://qf-api.quietforge-studio.workers.dev/mcp

Cursor

{
  "mcpServers": {
    "x402-tools": {
      "url": "https://qf-api.quietforge-studio.workers.dev/mcp"
    }
  }
}

Save as ~/.cursor/mcp.json (all projects) or .cursor/mcp.json (this project).

ChatGPT

Settings > Connectors > Advanced > Developer mode, then Create. Name: Quietforge x402 Tools. MCP server URL: https://qf-api.quietforge-studio.workers.dev/mcp. Authentication: No authentication.

Custom connectors need a plan with Developer mode; menu names change between releases.

Hermes Agent

mcp_servers:
  x402-tools:
    url: "https://qf-api.quietforge-studio.workers.dev/mcp"

Add to ~/.hermes/config.yaml, then run /reload-mcp.

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