23 Services from app.heinrichstech.com

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.

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.

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.

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.

Verifies a webhook signature against the provider's canonical HMAC scheme for Stripe, GitHub, Vercel, CDP, Slack, or generic HMAC-SHA256

Returns detailed SSL/TLS certificate information for a given hostname and port, including validity, expiry, issuer, SANs, fingerprint, and cipher details.

Returns parsed WHOIS record for any domain, including registrar, dates, name servers, status flags, and raw whois text, for 0.005 USDC per query.

Renders any URL using full Playwright browser execution and extracts clean markdown via Readability, enabling crawling of SPAs and JavaScript-heavy sites

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.

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.

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

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.

Returns the ERC-20 token balance of a wallet address for any token contract on Ethereum or Base mainnet, with decimals applied.

Resolves DNS records (A, AAAA, MX, TXT, NS, CNAME, SOA, SRV, CAA) for any public hostname via a paid x402 micro-transaction API

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.

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

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.

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

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

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.

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.

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.

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.