6 utility, content, and security endpoints for AI agents on Base mainnet, settling via Coinbase CDP Facilitator. Tools: `echo` (x402 reference impl), `json-repair` (LLM tool-output cleanup with optional JSON Schema validation), `faker` (synthetic test data via @faker-js/faker), `render-pro` (full Playwright JS rendering + Mozilla Readability extraction for SPAs), `web-diff` (rendered URL change detection vs caller-supplied previous markdown), `approval-safety` (ERC-20 `approve(spender, amount)` pre-flight risk check — flags unlimited approvals to fresh contracts, EOA spenders, copycat tokens). $0.001 USDC per call for utility tier, $0.05 for premium tier. No API keys, no subscriptions. Self-hosted discovery at [bazaar.json](https://app.heinrichstech.com/bazaar.json). ([GitHub](https://github.com/Drock91/bitbooth-gateway))
Quality grade
How grading works- ✗ Answers a real HTTP 402 challenge
- ✗ Publishes a /.well-known/x402 descriptor
- ✗ Payment address on record
- ✗ Settlement network declared
- ✗ Price declared
How to call
curl -sS -i -X GET https://app.heinrichstech.com/bazaar.json # expect HTTP 402 Payment Required (price advertised in the 402 response)
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