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Grube82/README.md

Hi — I'm the builder behind Crypto ETF Sentinel

I build x402-monetized data oracles and agentic API feeds: live infrastructure that AI agents and applications discover and pay for per request.

Crypto ETF Sentinel — US spot crypto ETF regulatory intelligence, delivered as a Telegram bot, an x402-paywalled data API, and a Stripe subscription terminal. Live, indexed in the x402 ecosystem, and taking real on-chain payments.

→ https://cryptoetfsentinel.com

Open source

  • x402-paid-api-starter — a clean FastAPI starter for charging per API call with x402: dual-chain (Base + Solana), testnet→mainnet, receive-only, with discovery and a settlement ledger.

  • x402-doctor — lint for your x402 endpoint: a read-only CLI that diagnoses the 402 challenge, spec compliance, browser/agent UX, caching and discovery.

  • x402-mock-server — a fake x402 endpoint for testing payment clients (pytest fixture + CLI), with failure injection and no real crypto.

Together: build with the starter → verify with the doctor → test your client with the mock.

Available for work — x402 / agentic payment integrations, API monetization, and data feeds. If you need an API turned into something agents can find and pay for, that's my lane.

Reach me

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  1. x402-paid-api-starter x402-paid-api-starter Public

    FastAPI starter for charging per API call with x402 — dual-chain (Base + Solana), testnet→mainnet, receive-only, with discovery and a settlement ledger.

    Python 1

  2. x402-doctor x402-doctor Public

    Lint for your x402 endpoint — diagnose the 402 challenge, spec compliance, browser/agent UX, caching and discovery. Read-only, no keys, no spend.

    Python 1

  3. x402-mock-server x402-mock-server Public

    A fake x402 endpoint for testing payment clients — spec-faithful 402 challenges, no crypto/wallet/funds. pytest fixture + context manager + standalone CLI, with failure injection.

    Python 1