477 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.
Check URL health: HTTP status code, redirect chain, SSL certificate validity and expiry date, content type, and response time. HTTP and SSL inspection. Sub-second. x402-native.
Preflight and monitoring for x402/HTTP APIs: free structural audit of any x402 402 challenge (accepts[], scheme, network, asset, amount, payTo), plus paid live probe (/check), headers, TLS, uptime history and a public mo...
API/URL health check: up or down, HTTP status, latency, and whether the endpoint is a valid x402 paid endpoint.
Check an x402 endpoint BEFORE paying it. Makes one unpaid request (never sends money), decodes the 402 terms, and verifies: the asset is a real USD stablecoin on that network, the price in USD vs your max_price_usd cap (...
Turn a public web page into an LLM-ready document: clean markdown with nav/cookie/script boilerplate removed, parsed JSON-LD, OpenGraph, heading outline, tables, link graph, word and token counts, and embedding-ready chu...
Base Latest Block: current Base mainnet block number, timestamp, base fee and gas used. $0.001 per call.
Liveness/latency pre-flight for a URL: is it up, HTTP status and class, response latency in ms, whether it redirects (and where), content-type and server.
Fresh operational audit of any public agent or paid API: reachability, latency, HTTP status, x402 challenge, price/network/payTo, OpenAPI, agent card and MCP manifest. Returns a 0-100 score, verdict and issues. Try GET /...
SWARM Site Check - Website uptime and link check in one call: is a URL up, its HTTP status, final URL after redirects, response time and TLS/certificate errors. Use when an agent monitors sites on a schedule, verifies a...
Recurring webpage monitor for prices, inventory, availability, documentation, policies and competitors. Returns changed/unchanged state, current hash, metadata and HTTP/security context plus a ready next request. Designe...
x402 directory and uptime monitoring: find the most reliable, cheapest or fastest Base x402 endpoint for your keywords before you pay, with measured uptime (7/30 days), latency, price consistency and a market price summa...
Check any public URL: status code, latency, final URL after redirects, and response headers. The uptime primitive for agent monitors.
HTTP ping: up or down, status and timings (DNS, TCP, TLS, TTFB): One live request to a URL with no redirect following: up or down (and why: DNS, timeout, refused, TLS), status, Location, timings in ms for DNS, TCP connec...
Request an https URL and report whether it is reachable, its status, every redirect hop with timings, key and security headers (HSTS, CSP and others), and the TLS certificate with its issuer, the names it covers and the...
Semantically similar endpoints that currently out-score a given one on the trust score. Each carries score, grade, similarity, advertised price, and endpoint page; same-host siblings and avoid-flagged endpoints are exclu...
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.
Base transaction explained from the chain: success or reverted, block and time, from, to, ETH value, method selector, gas used and fee, contract created, and every ERC-20 transfer decoded with token symbol and amount. In...
Check an x402 seller before you pay it. Probes the endpoint now, checks that its payment can actually succeed (token EIP-712 domain, payTo), and adds its 30-day uptime from our monitor of paid Bazaar listings, how many d...
Find the best x402 API for a task. Describe what you need (for example "remove the background from a photo") and get the matching sellers from the CDP Bazaar ranked by relevance, how many distinct buyers paid them in 30...
x402 APIs that were up before but failed our latest check, most paid first.
URL uptime and website health check for AI agents. Verify reachability, exact HTTP status, latency, content type, and safe redirect chain before following a link, citing a source, or calling an API. Deterministic, SSRF-s...
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.
Audit an x402 endpoint: fetch a public paid endpoint unpaid, validate its 402 challenge (x402Version, accepts fields, resource match, GET/POST parity, CORS exposure, latency) and return an up/down verdict plus a scored c...
DNS records for a domain over DNS-over-HTTPS: A, AAAA, CNAME, MX, TXT, NS, SOA, CAA, SRV, PTR or HTTPS, with TTLs and DNSSEC validation flag.