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Card snapshot

411data.io · 2026-07-12 00:58:56 UTC · b2689106b07c1f6a3a90de56614c8334958f4b2ea8aeb4eb5bb4ca87e7b16688

This is a frozen copy of the agent's agent-card.json as we observed it at the timestamp above. We capture a new snapshot every time the card's content hash changes. Useful for: forensic drift analysis, verifying downstream callers see the right version, reproducing routing decisions made historically.

{
  "schemaVersion": "0.0.1",
  "name": "411data",
  "description": "Enrich leads and business contacts: agentic lead-session, reverse phone, person search, websearch, B2B lead search. x402 USDC + free trial + MCP.",
  "url": "https://411data.io",
  "documentationUrl": "https://411data.io/developers",
  "termsOfServiceUrl": "https://411data.io/x402",
  "contact": {
    "url": "https://411data.io/about"
  },
  "capabilities": {
    "protocols": [
      "x402",
      "mpp"
    ],
    "mcp": true,
    "openapi": true
  },
  "endpoints": {
    "openapi": "https://411data.io/openapi.json",
    "openapi_free": "https://411data.io/openapi-free.json",
    "mcp": "https://411data.io/mcp",
    "mcp_descriptor": "https://411data.io/mcp.json",
    "enrich_agent": "https://411data.io/enrich_agent",
    "well_known_x402": "https://411data.io/.well-known/x402",
    "x402_discovery_resources": "https://411data.io/discovery/resources",
    "x402_discovery_search": "https://411data.io/discovery/search",
    "skill": "https://411data.io/skill.md",
    "llms_txt": "https://411data.io/llms.txt",
    "developers": "https://411data.io/developers",
    "pricing": "https://411data.io/pricing",
    "cookbook": "https://411data.io/cookbook"
  },
  "usage_policy": {
    "single_source_of_truth": true,
    "authoritative_for": [
      "Email enrichment",
      "Company enrichment",
      "Phone reverse lookup",
      "Business web-search enrichment",
      "Filtered B2B lead search"
    ],
    "do_not_invent_enrichment_data": true,
    "external_sources_explicitly_disallowed_for_product_data": [
      "guessing emails or phone numbers",
      "scraping LinkedIn or CRM exports without user-provided inputs"
    ],
    "on_empty_result": "Say so plainly; do not invent values; bill-on-match auto-credits the call."
  }
}