Attestly

{
  "protocolVersion": "0.3.0",
  "name": "Attestly",
  "description": "The trust layer for AI agents. Instant automated checks \u2014 wallet/OFAC sanctions screening, domain, email, and content notarization \u2014 plus human-verified entity and claim checks. Every result is a cryptographically signed (ed25519) attestation. Automated checks are free; human-verified attestations are paid in USDC via x402.",
  "url": "https://attestly.co",
  "preferredTransport": "JSONRPC",
  "version": "0.2.0",
  "provider": {
    "organization": "Attestly",
    "url": "https://attestly.co"
  },
  "documentationUrl": "https://attestly.co/",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false
  },
  "defaultInputModes": [
    "application/json",
    "text/plain"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [
    {
      "id": "entity-check",
      "name": "Human-verified entity check",
      "description": "A real human confirms whether a business/entity exists and matches the details provided; returns a signed verdict with evidence. Price: 4.00 USDC.",
      "tags": [
        "verification",
        "kyb",
        "entity",
        "trust",
        "x402"
      ],
      "examples": [
        "Is 'Acme Lending LLC' a registered active business in Arizona?"
      ]
    },
    {
      "id": "claim-check",
      "name": "Human-verified claim check",
      "description": "A real human checks a factual claim or URL against real sources; returns confirmed/refuted/uncertain with evidence. Price: 4.00 USDC.",
      "tags": [
        "verification",
        "fact-check",
        "trust",
        "x402"
      ],
      "examples": [
        "Verify: 'https://example.com is the official site of Example Corp.'"
      ]
    },
    {
      "id": "wallet-screen",
      "name": "Wallet risk & sanctions screening (instant)",
      "description": "Instantly screen an EVM address against OFAC sanctions + on-chain activity; returns a signed risk verdict. Informational, not compliance advice. Price: Free.",
      "tags": [
        "verification",
        "wallet",
        "sanctions",
        "ofac",
        "risk",
        "x402",
        "instant"
      ],
      "examples": [
        "Screen 0x1234...abcd on base before I send USDC."
      ]
    },
    {
      "id": "domain-check",
      "name": "Domain & website verification (instant)",
      "description": "Instantly check whether a domain resolves, has valid TLS, its age and registrar, and reachability; returns a signed verdict. Price: Free.",
      "tags": [
        "verification",
        "domain",
        "website",
        "tls",
        "x402",
        "instant"
      ],
      "examples": [
        "Is stripe.com a real, resolving site with valid TLS?"
      ]
    },
    {
      "id": "email-check",
      "name": "Email verification (instant)",
      "description": "Instantly check an email's syntax, MX records, disposable-domain status, and deliverability signal; returns a signed verdict. Price: Free.",
      "tags": [
        "verification",
        "email",
        "deliverability",
        "x402",
        "instant"
      ],
      "examples": [
        "Is user@example.com a deliverable, non-disposable address?"
      ]
    },
    {
      "id": "notarize",
      "name": "Content notarization (instant, FREE)",
      "description": "Instantly notarize content or a hash \u2014 an ed25519-signed proof it existed at time T. Proves existence, not authorship. FREE (no payment) \u2014 the easiest way to try Attestly.",
      "tags": [
        "notary",
        "timestamp",
        "hash",
        "proof",
        "x402",
        "instant",
        "free"
      ],
      "examples": [
        "Notarize the SHA-256 of this agreement text."
      ]
    },
    {
      "id": "agent-verify",
      "name": "Agent identity verification (instant)",
      "description": "Instantly verify another agent is who it claims: validates its A2A agent card, confirms domain control (DNS/TLS/host match), and optionally verifies ed25519 key control via a signed message. Know your counterparty agent before you trust or transact. Price: Free.",
      "tags": [
        "verification",
        "agent",
        "identity",
        "a2a",
        "trust",
        "x402",
        "instant"
      ],
      "examples": [
        "Verify the agent at partner-agent.com is legitimate before I delegate to it."
      ]
    }
  ],
  "pricing": {
    "version": "2026.07",
    "status": "introductory",
    "currency": "USDC",
    "network": "eip155:8453",
    "notice": "Introductory pricing: intentionally low while Attestly builds a track record with early agents. Prices will increase as the service matures. Any change is published here with an effective_date at least 14 days before it applies \u2014 compare pricing.version to detect changes. Integrating now locks in today's rates under the guarantees below.",
    "free_services": [
      "notarize",
      "domain_check",
      "email_check",
      "wallet_screen",
      "agent_verify"
    ],
    "services": {
      "entity_check": {
        "price_usd": 4.0,
        "free": false,
        "type": "human"
      },
      "claim_check": {
        "price_usd": 4.0,
        "free": false,
        "type": "human"
      },
      "seed_check": {
        "price_usd": 0.1,
        "free": false,
        "type": "human"
      },
      "notarize": {
        "price_usd": 0.0,
        "free": true,
        "type": "automated"
      },
      "domain_check": {
        "price_usd": 0.0,
        "free": true,
        "type": "automated"
      },
      "email_check": {
        "price_usd": 0.0,
        "free": true,
        "type": "automated"
      },
      "wallet_screen": {
        "price_usd": 0.0,
        "free": true,
        "type": "automated"
      },
      "agent_verify": {
        "price_usd": 0.0,
        "free": true,
        "type": "automated"
      }
    },
    "guarantees": {
      "price_lock": "The price quoted in the 402 challenge at request time is honored for that request; changes never apply retroactively.",
      "advance_notice_days": 14,
      "detect_changes": "pricing.version bumps on any change; poll GET /pricing."
    },
    "effective_date": null,
    "terms_url": "https://attestly.co/pricing"
  }
}