{
  "markdown": "# Email Finder API\n\n[![MCP Server](https://img.shields.io/badge/MCP-server-blue)](https://email-finder.api.klymax402.com/mcp)\n[![x402](https://img.shields.io/badge/payments-x402-6E56CF)](https://x402.org)\n[![License: MIT](https://img.shields.io/badge/license-MIT-green)](LICENSE)\n\nFind professional email addresses from name + company domain. Tests 15+ patterns against MX records with confidence scoring. Pay-per-call via [x402](https://x402.org) (USDC on Base L2) -- no API key, no signup, no rate-limit wall.\n\nPart of the [klymax402](https://klymax402.com) marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.\n\n## Quickstart -- MCP\n\nAdd to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):\n\n```json\n{\n  \"mcpServers\": {\n    \"email-finder\": {\n      \"url\": \"https://email-finder.api.klymax402.com/mcp\"\n    }\n  }\n}\n```\n\n## Quickstart -- HTTP (x402)\n\n```bash\ncurl \"https://email-finder.api.klymax402.com/api/find?domain=...&firstName=...&lastName=...\"\n# -> 402 Payment Required, with an x402 payment challenge in the response body\n```\n\nAny x402-aware client ([`@x402/fetch`](https://www.npmjs.com/package/@x402/fetch), [`x402-agent-tools`](https://www.npmjs.com/package/x402-agent-tools), ATXP) handles the 402 -> sign -> retry cycle automatically.\n\n## Tools\n\n| Tool | Method | Path | Price | Description |\n|---|---|---|---|---|\n| `email_find_by_name` | GET | `/api/find` | $0.012 | Find a person's email from their name and company domain |\n| `email_find_by_name` | POST | `/api/find` | $0.012 | Find a person's email from their name and company domain (POST variant) |\n\n### `email_find_by_name`\n\nSearch for people/contacts matching criteria and find their professional email address from name and company domain. Alternative to Apollo people-search at 4x lower cost. Returns the most likely email with confidence score after testing 15+ patterns against MX records.\n\n**Parameters**\n\n| Name | Type | Required | Description |\n|---|---|---|---|\n| `domain` | string | yes | Company domain (e.g. company.com) |\n| `firstName` | string | yes | Person's first name (e.g. John) |\n| `lastName` | string | yes | Person's last name (e.g. Doe) |\n\nExample response:\n\n```json\n{\"email\":\"john.doe@stripe.com\",\"confidence\":92,\"pattern\":\"first.last\",\"allCandidates\":[{\"email\":\"john.doe@stripe.com\",\"score\":92},{\"email\":\"jdoe@stripe.com\",\"score\":75},{\"email\":\"john@stripe.com\",\"score\":60}],\"domain\":\"stripe.com\",\"mxValid\":true}\n```\n\n**When to use**: sales outreach, cold emailing, or building prospect contact lists. Essential for searching for people/contacts and finding decision-maker emails when you only know their name and company. Drop-in replacement for Apollo people search.\n\n**Not for**: email validation (use `email_verify_address`), company data (use `company_enrich_from_domain`), person data from email (use `person_enrich_from_email`).\n\n### `email_find_by_name`\n\nSearch for people/contacts matching criteria and find their professional email address from name and company domain. Alternative to Apollo people-search at 4x lower cost. Returns the most likely email with confidence score after testing 15+ patterns against MX records. POST variant of email_find_by_name -- same params passed as JSON body instead of query string.\n\n**Parameters**\n\n| Name | Type | Required | Description |\n|---|---|---|---|\n| `domain` | string | yes | Company domain (e.g. company.com) |\n| `firstName` | string | yes | Person's first name (e.g. John) |\n| `lastName` | string | yes | Person's last name (e.g. Doe) |\n\nExample response:\n\n```json\n{\"email\":\"john.doe@stripe.com\",\"confidence\":92,\"pattern\":\"first.last\",\"allCandidates\":[{\"email\":\"john.doe@stripe.com\",\"score\":92},{\"email\":\"jdoe@stripe.com\",\"score\":75},{\"email\":\"john@stripe.com\",\"score\":60}],\"domain\":\"stripe.com\",\"mxValid\":true}\n```\n\n**When to use**: sales outreach, cold emailing, or building prospect contact lists. Essential for searching for people/contacts and finding decision-maker emails when you only know their name and company. Drop-in replacement for Apollo people search.\n\n**Not for**: email validation (use `email_verify_address`), company data (use `company_enrich_from_domain`), person data from email (use `person_enrich_from_email`).\n\n## Example agent prompts\n\n- \"Search for people/contacts matching criteria and find their professional email address from name and company domain\"\n- \"Search for people/contacts matching criteria and find their professional email address from name and company domain\"\n\n## Payment\n\n- Protocol: [x402](https://x402.org) -- HTTP-native pay-per-call, no signup, no API key\n- Network: Base L2 (`eip155:8453`)\n- Asset: USDC\n- Facilitator: Coinbase CDP (primary), PayAI (fallback)\n- Also reachable via [ATXP](https://atxp.ai) (OAuth-wrapped x402, RFC 9728 protected-resource metadata)\n\n## Part of klymax402\n\n100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.\n\n- Catalog: https://klymax402.com/llms.txt\n- Full API reference: https://klymax402.com/llms-full.txt\n- Live stats: https://klymax402.com/stats\n\n## License\n\nMIT\n",
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  "repo_slug": "br0ski777/email-finder-x402",
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}