172 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.
Live health of every supported chain in one call: chain id, block height and how stale the head is. Use it to pick a chain that is actually responding. Via eth_getBlockByNumber.
BotsRated (beta): full measurement history for one seller host: every receipt with timestamp, status, latency, hashes, signatures and tx links. Free sample: /v1/sample/report. First 10 calls per client per UTC day are fr...
Convert one bounded fiat amount using the latest successfully fetched European Central Bank daily foreign-exchange reference table. Forest returns the ECB observation date and deterministic cross-rates through EUR. Fresh...
x402 test endpoint on Base mainnet. Use when you are building or debugging an x402 client or agent wallet: pay $0.001 USDC and get back what actually settled (network, asset, atomic amount, payTo, payer and transaction h...
TLS/SSL certificate check: issuer, expiry, days left, SANs, trust, protocol — Genesis402 / UnyKorn Operator Network
HTTP Latency Check API. Measure HTTP response latency for a URL from the Cloudflare Worker edge. Returns status code, latency, redirect, content type and edge location metadata. Useful for uptime checks, API diagnostics...
Heartbeat endpoint billed via a batch-settlement payment channel. Independently monitored by x402-list.com: 100% uptime since Oct 27, 2026, 14/14 x402 compliance checks (as of Oct 31, 2026). Evidence: https://x402-list.c...
One answer with every tip topic (Solana slot/height, Solana priority-fee percentiles, on-chain SOL/USD, Base gas and Ethereum gas), each with its seq, observedAt and age. Served from the shared hub: each topic refreshes...
Seller reputation by payTo address: how many endpoints it serves, how many are live, price range, clone-farm and quote-only flags, and on-chain activity on Base (settlements and unique payers over 30 days, last settlemen...
Encode text or a URL as a QR code: PNG (base64 and a data URL) or SVG, with the size and error correction level you choose.
Live x402 seller health check: fetches /.well-known/x402(.json) and the unpaid 402 challenge; reports reachable, TLS, schema OK, network, asset, payTo, price, latency. SSRF-safe, no chain reads.
urlwatch-batch - batch page change detection / website change monitoring: check whether up to 10 public URLs changed since the last check. $0.01 per call.
change-detect - check whether a web page changed since the last check (alias of urlwatch; accepts url|target|uri, returns changed/first_seen + hashes). $0.005 per call.
Detect page changes with urlwatch - page change detection / website change monitoring / webpage diff: check whether a public URL's readable content changed since the last check; returns changed/first_seen plus content ha...
Read recent in-memory FreshProof snapshots for a watch ID
Indonesian news headlines by topic (Google News ID edition). Topics: nasional, dunia, finance, techno, sport, hiburan, sains, kesehatan. Free 3-headline preview at /preview?topic=finance. Same API also serves /search, /b...
Parse and classify an IPv4/IPv6 address (private, loopback, CGNAT, documentation, ...). Canonical and expanded forms, integer and hex values, version, scope per the IANA special-purpose registries (private, loopback, lin...
Detect SEC filing additions and removals since Toll Road's last observed company snapshot.
Use this to be told when a Solana program you rely on changes hands or code, or when a new advisory hits your Cargo.lock: 30 days of hourly checks, signed webhook on each change. One payment.
Use this to be told when a contract you rely on (Base, Robinhood Chain) gets new code, a new owner or weaker upgrade rules, or when a new advisory hits your npm lockfile: 30 days of hourly checks, signed webhook on each...
Does a website use Sentry? Fetches the page (homepage for a bare domain) and matches Sentry's fingerprints in the HTML and response headers, returning yes/no with the evidence snippet and the category (monitoring). Techn...
Does a website use Datadog RUM? Fetches the page (homepage for a bare domain) and matches Datadog RUM's fingerprints in the HTML and response headers, returning yes/no with the evidence snippet and the category (monitori...
Does a website use New Relic? Fetches the page (homepage for a bare domain) and matches New Relic's fingerprints in the HTML and response headers, returning yes/no with the evidence snippet and the category (monitoring)....
Does a website use Bugsnag? Fetches the page (homepage for a bare domain) and matches Bugsnag's fingerprints in the HTML and response headers, returning yes/no with the evidence snippet and the category (monitoring). Tec...