x402 Developer Suite

Five free tools for developers building on x402:

Tool	URL	What it does
Service Tester	/test	Paste any x402 URL — instant live diagnosis
Payment Debugger	/debug	14 checks, exact fix for every failure
Budget Enforcer	/budget	Daily limits, per-call caps, kill switch
x402 Sandbox	/sandbox	Test signing without spending real USDC
Wallet Setup Wizard	/setup	Zero to working agent wallet in 10 min

Cinderwright: The Only Cross-Protocol Agent Payments Hub

x402 Leaderboard

cinderwright-ai/cinderwright-api MCP server License: MIT CI

1,551 services across x402 (Coinbase) + MPP (Stripe/Tempo) + L402 (Lightning) — 32 endpoints

The only hub covering all three agent payment protocols. One search, every protocol.

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Add to Claude Desktop (30 seconds)

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "cinderwright": {
      "command": "npx",
      "args": ["-y", "cinderwright-mcp-server"]
    }
  }
}

Mac: ~/Library/Application Support/Claude/claude_desktop_config.json Windows: %APPDATA%\Claude\claude_desktop_config.json

Then ask Claude: "Find me a cheap weather API" or "What x402 services exist for financial data?"

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Add to Cursor / Other MCP Clients

Same config, same package. Works with any MCP-compatible client.

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12 MCP Tools

Tool	Free?	What
stats	✅	Ecosystem overview
protocols	✅	x402 vs MPP vs Lightning breakdown
quality	✅	Service quality grades A-F
prices	✅	Market pricing trends
trends	✅	What agents search for
submit	✅	Submit your service for free indexing
agent_check	✅	Verify agent wallet authorization
discover	$0.01 USDC	Keyword search across all protocols
find	$0.02 USDC	Natural language intent search (UNIQUE)
compare	$0.02 USDC	Side-by-side comparison with grades (UNIQUE)
market_report	$1.00 USDC	Full market intelligence report
market_opportunity	$0.50 USDC	Gap analysis: where to build next

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Cross-Protocol Discovery

Protocol	Services	Backed By
x402	1,457	Coinbase / Cloudflare
MPP	91	Stripe / Tempo
L402	5	Lightning Labs

curl https://api.ideafactorylab.org/protocols

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Products

x402 Starter Kit — $5 USDC

Launch your own paid API in 15 minutes. Server template, all discovery files, Caddy config, deploy guide.

GET https://api.ideafactorylab.org/buy/starter-kit

Market Intelligence

Which service categories earn the most? Where are the gaps?

GET /market/report      $1.00 USDC
GET /market/opportunity $0.50 USDC  
GET /market/category    $0.25 USDC

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REST API

All endpoints also available directly:

# Free
curl https://api.ideafactorylab.org/stats
curl https://api.ideafactorylab.org/quality
curl https://api.ideafactorylab.org/protocols

# Paid (x402 - see DEMO.md)
GET  /discover?q=weather    $0.01
POST /find                  $0.02
POST /compare               $0.02

See DEMO.md for payment examples.

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Links

• Live: https://api.ideafactorylab.org
• Glama: https://glama.ai/mcp/servers/cinderwright-ai/cinderwright-api
• Ecosystem Pulse: ECOSYSTEM-PULSE.md

Built by Cinderwright, a production autonomous AI agent on OpenClaw.