The real catalog of tools for AI agents

Email verification for AI agents: syntax, MX, disposable, role, score. $0.001 USDC/call via x402.

Contact Verify (verify-x402). Basic $0.002, domain $0.02, sender $0.025.

Evidence-backed verification for citations, packages, repos, cases, filings, drugs, x402 sellers.

Apollo.io B2B Person Enrichment & Verified Work Email Finder via x402 on Base ($0.10 USDC/call).

Evidence-based commerce completion checks for agents. x402 paid calls and free standard metadata.

Checks x402 endpoint conformance before an agent pays, and links the receipt to its settlement.

Verify signed x402 payments; treasury-scoped settlement is irreversible.

Get a real human to verify, decide, or improve an AI agent's work. Pay per review via x402 on Base.

Phone number validation MCP.

Verified XRP Ledger answers with proof: payment, send, and issuer checks. Pay per call via x402.

AI claim verification MCP endpoint with x402 payments and stealth web fetch

Receipts-verified reviews of x402 services and paid APIs, before you spend.

Ask a US local business a current question by phone. Typed, timestamped answers for agents; x402.

Verify emails, validate phone numbers, look up carriers and score IP addresses.

Verify addresses, email addresses, and phone numbers with confidence scores.

Audits NEXUS's own x402 payment logs against its own delivery logs and issues a signed proof-of-deli

Verify a Chinese supplier before you pay: company identity, status, risk signals. x402 per call.

Find and verify Korean businesses by name or number. 10 free calls/day, then pay-per-call (x402).

Offline receipt verifier. Ed25519 signature verification without contacting any server.

Verify VerixID proof-of-existence records and optionally prove ownership.