Revenue Dojo Price API — live x402 pay-per-call crypto price feed for tunnel routing demos

[AmitabhainArunachala]

What

A live x402-gated crypto price API that returns real BTC/ETH/SOL/BNB/XRP market data for $0.01–$1.00 USDC per call on Base mainnet. 9 paid endpoints, all settled on-chain via Coinbase CDP facilitator.

Why this is useful for portal-tunnel users

portal-tunnel publishes localhost services to the agentic web with x402 payments. Developers testing tunnel routing need real upstream x402 endpoints to route to — not mock servers. This API is a production-grade x402 service that:

• Returns proper HTTP 402 with payment-required header on unpaid requests
• Settles USDC payments on Base mainnet via Coinbase CDP facilitator (x402scan-indexed)
• Provides .well-known/x402 discovery manifest and /openapi.json spec
• Exposes /llms.txt for agent-discoverable documentation

Endpoints

Endpoint	Cost	Description
GET /price	$0.01 USDC	BTC & ETH full payload (price, 24h change, market cap, volume)
GET /price/{coin}	$0.02 USDC	Single coin (btc, eth, sol, bnb, xrp, ada, doge, avax, dot, matic, link, near, sui, apt, arb, op)
GET /portfolio	$0.05 USDC	Multi-coin portfolio snapshot
GET /opportunities/latest	$0.03 USDC	Curated agent-business revenue opportunity feed
GET /audit/x402	$1.00 USDC	x402 launch audit for service owners
POST /receipt/verify	$0.05 USDC	Classify agent-work receipts into R0-R5 proof tiers
POST /mcp/call	$0.05 USDC	Paid MCP-style tool execution gateway

Quickstart

# 1. Probe without payment → get 402
curl -i https://x402.167-172-95-184.nip.io/price

# 2. Pay with x402 SDK (Python)
pip install x402 httpx eth-account
export PRIVATE_KEY=0x...  # Base mainnet wallet with USDC
python3 -c 

[gosunuts]

Awesome works. Could you provide use cases or integration scenarios? You are also welcome to submit a PR directly.