MCP 服务器

x402 Crypto Price Tracker

Enables agents to pay per call in USDC for live crypto prices and revenue intelligence via HTTP 402, with no API keys required.

README

x402 Crypto Price Tracker — Revenue Swarm Paid API

Agent-payable crypto market data and revenue intelligence over HTTP 402 / x402. No API keys. Agents pay per call in USDC on Base. Free preview available.

Live Demo

Base URL: https://x402.167-172-95-184.nip.io

Free Endpoints

Endpoint	Description
`GET /`	Landing page with live prices, curl examples, and try button
`GET /demo`	Free live preview (BTC/ETH, truncated)
`GET /health`	Service health + upstream status
`GET /mcp/tools`	Free MCP tool catalog (4 tools)
`GET /.well-known/x402`	x402 discovery manifest
`GET /x402.json`	Machine-readable service manifest
`GET /openapi.json`	OpenAPI 3.0.3 spec with x-payment-info extensions

Paid Endpoints (HTTP 402 → USDC payment → 200)

Endpoint	Price	Description
`GET /price`	$0.01	BTC + ETH prices with 24h change and market cap
`GET /price/{coin}`	$0.02	Price for any of 16 supported coins (btc, eth, sol, bnb, xrp, ada, doge, avax, dot, matic, link, near, sui, apt, arb, op)
`GET /portfolio`	$0.05	Multi-coin portfolio snapshot (BTC, ETH, SOL, BNB, XRP)
`GET /opportunities/latest`	$0.03	Curated buyer-agent revenue opportunity feed
`GET /audit/x402`	$1.00	One-dollar x402 launch audit with concrete fixes
`POST /receipt/verify`	$0.05	Classify A2A/ECB/agent-work receipts into R0-R5 proof tiers
`POST /mcp/call`	$0.05	Paid MCP-style tool call gateway (4 revenue tools)

MCP Tools

Tool	Description
`scan_revenue_surfaces`	Rank current agent monetization surfaces with immediate actions
`audit_x402_endpoint`	Audit an x402 endpoint for discovery, robots, manifest, and paid-route readiness
`find_bountybook_jobs`	Find BountyBook jobs likely to pass oracle verification
`find_dealwork_low_competition`	Find low-competition DealWork opportunities and bid recommendations

Quick Start

# 1. Try the free demo
curl https://x402.167-172-95-184.nip.io/demo

# 2. Hit a paid endpoint (returns HTTP 402 with payment requirements)
curl -i https://x402.167-172-95-184.nip.io/price/btc

# 3. Browse the MCP tool catalog
curl https://x402.167-172-95-184.nip.io/mcp/tools

# 4. Call a paid MCP tool (returns 402)
curl -X POST https://x402.167-172-95-184.nip.io/mcp/call \
  -H "Content-Type: application/json" \
  -d '{"tool":"scan_revenue_surfaces","input":{"focus":"x402"}}'

Self-Host

git clone https://github.com/AmitabhainArunachala/x402-crypto-price-tracker.git
cd x402-crypto-price-tracker

python3 -m venv .venv && source .venv/bin/activate
pip install -r requirements.txt

# Configure
export PAY_TO_ADDRESS="0xYourWalletAddress"
export X402_NETWORK="base-sepolia"  # or "base" for mainnet
export X402_PUBLIC_URL="https://your-domain.com"

# Run
uvicorn server:app --host 0.0.0.0 --port 8080

Architecture

Framework: FastAPI + uvicorn
Payment protocol: x402 v2 (HTTP 402 + EIP-3009 USDC TransferWithAuthorization)
Facilitator: Coinbase x402 facilitator (https://x402.org/facilitator)
Network: Base Sepolia (testnet) / Base Mainnet
Data source: CoinGecko free API (no API key needed)
Discovery: Bazaar extension on all 402 responses, .well-known/x402, OpenAPI 3.0.3