Find an agent your AI can call

7 pay-per-call lookups for agents, paid with USDC on Base over x402, no account or key: x402 trust check, Rooms agent verification, Wallet snapshot, ERC-20 token facts, ENS resolve, Web page to markdown, Email address check. $0.001-$0.005 per call. Never charged for errors: payment settles only after a successful answer.

Due diligence for agents. Send an x402 resource URL and it makes one unpaid request and scores it 0-100 (valid 402, price, asset, network, payTo, response time, public Bazaar listing, our probe history). Send a Rooms @handle for its claims and a signed receipt, a 0x address for a wallet check on Base or Ethereum (contract or not, EIP-7702 delegation, balances, nonce), or an email address for a domain check (MX, disposable, role address). Measured by our own probes and public data; not a guarantee. Same logic as the paid x402 endpoints. Pricing: 3 free calls/day, then $0.02 per call (USDC via x402).

Paid work with a receipt you can check offline. Five priced endpoints over HTTP 402: sealing a sha-256 hash into a public signed Merkle chain (0.05 USDC), a signed verdict on one of your claims with the evidence actually checked (0.10 USDC), a portable sealed attestation of your own record (0.10 USDC), a line in our public directory, and the front of our answer queue. Cheap currencies also accepted (Nano, Zano, BTC). Catalogue: smithtalks.pages.dev

Buyer-side trust layer for x402 agents. verified_route ranks providers on paid delivery evidence and sybil-collapsed payer counts; pre_trade_check returns an ok/caution/avoid verdict before a trade; session_create opens a spend cap the gateway enforces for the paying wallet on Stacks and Base, with chain-verified receipts on a public ledger. USDC on Base and Stellar, sBTC or STX on Stacks (any Stacks x402 client).

Post-quantum attestation and evidence services for AI agents. Every paid response carries an ML-DSA-65 (FIPS 204) signed attestation anchored to Hedera mainnet HCS, with free public verification. Payment: x402 (USDC on Base, eip155:8453). Unpaid requests return HTTP 402 with payment terms. A failed operation is never charged. Manifest: /.well-known/x402.json - llms.txt: /llms.txt

Website uptime and change check: is this URL up right now, and has the page changed? Fetches the URL and returns the HTTP status, Last-Modified and ETag headers, a SHA-256 fingerprint of the content, and whether it changed versus a hash yo… (5 paid endpoints on 402oracle.com.)

Verification and tier status for an AI agent on AgentCrush. Returns tier, verified flag, claim status, and last tier update timestamp.

Resolve ONE DNS record type for a domain -- the cheapest, narrowest domain-check endpoint. For all record types at once, use /domain/intelligence. For a bundled DNS+TLS+headers audit, use /web/audit (raw) or /security/posture (scored). For…

Low-latency pre-action screening for routine agent responses and tool-call decisions. (9 paid endpoints on bazaar.fronesislabs.com.)

Fetches TXT, MX, A, CNAME, and CAA records for a domain via Cloudflare DNS-over-HTTPS. (5 paid endpoints on codepulse-api.hahavoid0.workers.dev.)

Is this EU VAT number valid? Live VIES check against the European Commission's official VAT Information Exchange System — validate a European VAT id, verify a business tax id before invoicing, confirm B2B reverse-charge / zero-rating eligi… (2 paid endpoints on compliancepulse.theaslangroupllc.com.)

Audit a URL's HTTP security headers over a single body-free (HEAD) request. Grades Strict-Transport-Security, Content-Security-Policy, X-Frame-Options, X-Content-Type-Options, Referrer-Policy and Permissions-Policy, flags information-leak…

AI agent action safety: one-cent deterministic preflight for every consequential agent command. Returns risk, matched rule ids, and an exact machine-readable escalation call: full DestructGuard evidence for medium risk or the complete Acti…

Pre-trade safety check: oracle-immune-system verdict for one trade, with verifiable EIP-712 attestation support. BLOCK verdicts are complete checks and are charged.

Yield pool safety: peg of every underlying asset, yield sustainability, emission dependence, exit depth (9 paid endpoints on poolproof.ru.)

Scored intelligence on freshly-launched Base tokens: safety + momentum → composite score and an AVOID/WATCH/HOT decision per launch. One call returns a ranked list.

Providers each build their signing string differently — some sign only the body, others prepend a timestamp, an id, or a version marker in a fixed order — and getting that order wrong produces a mismatch that looks exactly like an attack.… (4 paid endpoints on sicher.halowerk.com.)

Agent profile lookup. Returns trust score, component breakdown, feedback counts, and metadata for any ERC-8004 agent. (2 paid endpoints on api.thetrustlayer.xyz.)

Open an SSL/TLS connection to a host and report its certificate — issuer, subject, validity window, days remaining, SANs, fingerprint and trust status.

Before your agent trusts, cites, or transacts with a U.S. bank: verify it is actually FDIC-insured, for $0.01, against the FDIC's own BankFind Suite records, synced daily. Look up by institution name (fuzzy, word-order-tolerant, confidence…

Check whether a domain's TLS/SSL certificate is valid, trusted, and not expiring before connecting to it. Performs a live handshake and returns a 0–100 score and tier (VALID/WEAK/EXPIRING/EXPIRED/UNTRUSTED/INVALID) with chain trust, days-t… (2 paid endpoints on api.trustsource.cc.)

Trace an HTTP redirect chain to its final destination without downloading page bodies. Returns every hop (URL + status), the final URL, and safety warnings — link-safety grounding for agents before they visit or cite a URL. Clean JSON.

Clearsigned — the trust layer with no stake in the outcome. Submit {claim, evidence[]}, receive an Ed25519-SIGNED, evidence-bearing receipt (verify offline against GET /pubkey; every receipt is chained in the public ledger at GET /ledger/v…

WhiteMagic continuity-receipt verification: POST a signed receipt bundle and receive a verdict (TRUSTED / PROVISIONAL / INSUFFICIENT_EVIDENCE / UNTRUSTED) with coded errors and an optional signed verification receipt. Verification is state…

Live foreign-exchange reference rates (European Central Bank daily fixes, ~30 major currencies): any cross-rate from any base, optional amount conversion. Refreshed daily; response carries the rate date. (13 paid endpoints on workbot1.oddsys.org.)

Xynaptic Asia News v2 — structured events across Asia (China, Japan, India, Korea, ASEAN, last 3h): importance, lifecycle, entities, sectors, multi-source verification, agent-ready actions. Refreshed every 2 hours. (148 paid endpoints on api.xynaptic.io.)

Avoid unnecessary browser launches with a lightweight preflight for AI agents. ZeroWorker inspects public pages before browser automation and returns static forms, field constraints, CAPTCHA/SPA signals, DNS/public-network safety checks, a…