Live external x402 seller fixture for Switchboard payment flows

[AmitabhainArunachala]

Hi — this repo is directly in the wallet-equipped agent / x402 path, so I wanted to offer a tiny live external seller endpoint your agents can use as a real payment fixture.

Revenue Dojo API is live on Base mainnet x402 with no signup/API key:

• Base URL: https://x402.167-172-95-184.nip.io
• Discovery: https://x402.167-172-95-184.nip.io/.well-known/x402
• OpenAPI: https://x402.167-172-95-184.nip.io/openapi.json
• Agent docs: https://x402.167-172-95-184.nip.io/llms.txt
• Free preview: https://x402.167-172-95-184.nip.io/demo
• Quickstart: https://x402.167-172-95-184.nip.io/quickstart

Smallest paid call:

curl -i https://x402.167-172-95-184.nip.io/price
# returns HTTP 402 with USDC/Base x402 payment requirements

Paid routes include /price, /price/{coin}, /portfolio, /opportunities/latest, /audit/x402, /receipt/verify, /mcp/call, /briefing/morning, /research/{topic}. Facilitator is Coinbase CDP x402; settlement asset is USDC on Base mainnet.

Why I’m opening this: agent payment stacks need real external sellers to test wallet policy, payment authorization, receipt handling, and post-payment content retrieval. This endpoint is deliberately cheap ($0.01 minimum) and has both human-readable docs and machine-readable OpenAPI/discovery metadata.

If useful, I can open a small PR adding it as an example/fixture/listing in whatever format this repo prefers.

Full buyer-agent quickstart gist: https://gist.github.com/AmitabhainArunachala/c4d1c3d2fb74bb9246546a66b94000fd

[jmthomasofficial]

If you're building an x402 buyer and want a working paid endpoint to test against:

JMT has 35 live x402 tools on Base, including cited SEC EDGAR company lookup and RDAP domain intelligence.
Real output before paying: https://jmt-x402-proxy.jmthomasofficial.workers.dev/samples

No API key or signup is required. Happy to be a test endpoint for the integration described here.