Card snapshot
411data.io
·
2026-07-07 20:26:07 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."
}
}