# Services from app.heinrichstech.com on Zero

> app.heinrichstech.com serves 23 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/app.heinrichstech.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/app.heinrichstech.com/health.json

## Services

- [BitBooth Echo Endpoint (x402)](https://www.zero.xyz/c/bitbooth-echo-endpoint-x402-626e0bfa/llms.txt): $0.001/call via x402, rated 5.0/5 (1 review). Accepts an optional message string, charges $0.001 USDC via x402 micropayment, and returns a JSON echo of the input — a reference implementation of the x402 payment + CDP Facilitator + Bazaar discovery loop.
- [BitBooth Regex Test](https://www.zero.xyz/c/bitbooth-regex-test-3ea5f62d/llms.txt): $0.005/call via x402. Safely compiles and runs a JavaScript regex against a text corpus, returning structured matches with capture groups, indices, and lengths, with ReDoS protection via a hard CPU deadline.
- [BitBooth Webhook Signature Verify](https://www.zero.xyz/c/bitbooth-webhook-signature-verify-347520d5/llms.txt): $0.005/call via x402. Verifies a webhook signature against the provider's canonical HMAC scheme for Stripe, GitHub, Vercel, CDP, Slack, or generic HMAC-SHA256
- [BitBooth JSON Repair](https://www.zero.xyz/c/bitbooth-json-repair-d6640ed0/llms.txt): $0.005/call via x402. Fixes malformed JSON strings (trailing commas, single quotes, unquoted keys, missing brackets) and optionally validates against a JSON Schema, paying 0.001 USDC per call with no API key required.
- [BitBooth Web Diff](https://www.zero.xyz/c/bitbooth-web-diff-28a74a13/llms.txt): $0.08/call via x402. Renders a URL with full Playwright JS execution and returns a markdown snapshot plus a structured diff against a previously captured markdown snapshot, enabling change detection across any web page.
- [BitBooth SSL Info](https://www.zero.xyz/c/bitbooth-ssl-info-29460287/llms.txt): $0.002/call via x402. Returns detailed SSL/TLS certificate information for a given hostname and port, including validity, expiry, issuer, SANs, fingerprint, and cipher details.
- [BitBooth Whois](https://www.zero.xyz/c/bitbooth-whois-91e4e4f2/llms.txt): $0.01/call via x402. Returns parsed WHOIS record for any domain, including registrar, dates, name servers, status flags, and raw whois text, for 0.005 USDC per query.
- [BitBooth Render-Pro: Playwright JS Rendering + Readability Extraction](https://www.zero.xyz/c/bitbooth-render-pro-playwright-js-rendering-readability-extraction-b6354877/llms.txt): $0.01/call via x402. Renders any URL using full Playwright browser execution and extracts clean markdown via Readability, enabling crawling of SPAs and JavaScript-heavy sites
- [BitBooth Wallet Doctor](https://www.zero.xyz/c/bitbooth-wallet-doctor-48ab2f1f/llms.txt): $0.005/call via x402. Diagnoses an EVM wallet's readiness on Base mainnet by checking native ETH gas balance and USDC payment balance, returning structured health flags and recommendations.
- [BitBooth Contract Honeypot Check](https://www.zero.xyz/c/bitbooth-contract-honeypot-check-83c469e0/llms.txt): $0.001/call via x402. Analyzes any Base mainnet ERC-20 token contract for honeypot characteristics, returning a yes/no signal, 0-100 risk score, and per-signal severity breakdown for a 0.001 USDC fee.
- [BitBooth JWT Verify](https://www.zero.xyz/c/bitbooth-jwt-verify-e716997f/llms.txt): $0.005/call via x402. Verifies a JWT signature and canonical claims (iss, aud, exp, nbf) against a caller-supplied public key or shared secret, supporting HS256/384/512 and RS256/384/512 algorithms
- [BitBooth Tx Explain](https://www.zero.xyz/c/bitbooth-tx-explain-f1c34bcf/llms.txt): $0.005/call via x402. Decodes a Base-family EVM transaction hash into a human-readable narrative plus structured signals (4-byte selector, ERC-20 Transfer event logs), explicitly flagging reverted transactions
- [BitBooth Prompt Injection Scan](https://www.zero.xyz/c/bitbooth-prompt-injection-scan-929fcc99/llms.txt): $0.005/call via x402. Detects prompt-injection patterns in a text blob before it reaches an LLM, returning severity-tagged findings for threats like system-instruction overrides, jailbreak personas, tool/exec injection, credential exfiltration, and hidden-unicode payloads.
- [BitBooth Sitemap](https://www.zero.xyz/c/bitbooth-sitemap-aee3c4c1/llms.txt): $0.01/call via x402. Fetches and flattens a website's full URL inventory by following robots.txt, sitemap.xml, and sitemapindex chains, returning a deduplicated list of up to 5000 URLs with metadata
- [BitBooth Agent Credit Score](https://www.zero.xyz/c/bitbooth-agent-credit-score-c186b76d/llms.txt): $0.005/call via x402. Returns a 0-100 trustworthiness score plus raw on-chain signals for an EVM wallet address, derived from its public x402 settlement history on Base mainnet
- [BitBooth Wallet Risk Report](https://www.zero.xyz/c/bitbooth-wallet-risk-report-e5363a9d/llms.txt): $0.25/call via x402. Pays 0.25 USDC to submit an EVM wallet address and receive a multi-section risk assessment covering gas/USDC hygiene, x402 settlement history, and an overall risk grade with recommendations.
- [ERC-20 Token Balance Lookup (Ethereum/Base)](https://www.zero.xyz/c/erc-20-token-balance-lookup-ethereum-base-f67adc57/llms.txt): $0.003/call via x402. Returns the ERC-20 token balance of a wallet address for any token contract on Ethereum or Base mainnet, with decimals applied.
- [BitBooth DNS Lookup](https://www.zero.xyz/c/bitbooth-dns-lookup-f1683e7f/llms.txt): $0.01/call via x402. Resolves DNS records (A, AAAA, MX, TXT, NS, CNAME, SOA, SRV, CAA) for any public hostname via a paid x402 micro-transaction API
- [BitBooth Faker](https://www.zero.xyz/c/bitbooth-faker-cf046db1/llms.txt): $0.005/call via x402. Generates structured synthetic/fake data records on demand using a template schema, powered by @faker-js/faker, for seeding test databases, forms, and mock examples.
- [BitBooth x402 Discover](https://www.zero.xyz/c/bitbooth-x402-discover-ba6349bd/llms.txt): $0.005/call via x402. Crawls a target URL to discover all x402-paid endpoints — via direct 402 challenges, HTML meta/link/anchor tags, and bazaar.json catalogs — and returns a normalized discovery report.
- [BitBooth PII Redact](https://www.zero.xyz/c/bitbooth-pii-redact-e556bc04/llms.txt): $0.008/call via x402. Strips emails, phone numbers, SSNs, credit card numbers, IPv4 addresses, and hex secrets from a text blob before it is sent to an LLM, using deterministic regex-based redaction.
- [BitBooth Approval Safety](https://www.zero.xyz/c/bitbooth-approval-safety-8cba3567/llms.txt): $0.05/call via x402. Performs a heuristic risk assessment of an ERC-20 approve(spender, amount) call before signing, flagging unlimited approvals, fresh contracts, EOA spenders, copycat tokens, and known-malicious addresses.
- [BitBooth Portfolio Scan](https://www.zero.xyz/c/bitbooth-portfolio-scan-738179ba/llms.txt): $0.012/call via x402. Returns per-address native ETH and USDC holdings on Base mainnet for up to 5 EVM addresses, plus a totals rollup, for $0.005 USDC per call.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)