OpenSDR

io.github.arif-js/opensdr-mcp

Open-source AI SDR: B2B prospecting, email enrichment, buying signals and safe outreach staging.

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Connect this server

Add this to your MCP client config — claude_desktop_config.json (Claude Desktop) or .cursor/mcp.json (Cursor).Suits: Claude Desktop · Cursor.

{
  "mcpServers": {
    "opensdr-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "opensdr-mcp@1.0.1"
      ],
      "env": {
        "APOLLO_API_KEY": "<your APOLLO_API_KEY>",
        "HUNTER_API_KEY": "<your HUNTER_API_KEY>",
        "EXA_API_KEY": "<your EXA_API_KEY>",
        "TAVILY_API_KEY": "<your TAVILY_API_KEY>",
        "INSTANTLY_API_KEY": "<your INSTANTLY_API_KEY>",
        "HUBSPOT_ACCESS_TOKEN": "<your HUBSPOT_ACCESS_TOKEN>",
        "OPENSDR_READ_ONLY": "0",
        "OPENSDR_MAX_CREDITS_PER_CALL": "25"
      }
    }
  }
}
Environment variables
  • APOLLO_API_KEYsecretApollo API key for people/company search and enrichment (optional)
  • HUNTER_API_KEYsecretHunter API key for email finding and verification (optional)
  • EXA_API_KEYsecretExa API key for buying signals and account research (optional)
  • TAVILY_API_KEYsecretTavily API key, an alternative to Exa for signals and research (optional)
  • INSTANTLY_API_KEYsecretInstantly API v2 key for draft campaigns and lead enrollment (optional)
  • HUBSPOT_ACCESS_TOKENsecretHubSpot private-app token for contact sync (optional)
  • OPENSDR_READ_ONLYSet to 1 to disable every tool that writes to an external service
  • OPENSDR_MAX_CREDITS_PER_CALLHard cap on estimated paid provider credits per tool call

A starting point — check the repository for exact arguments and setup. Restart your client after editing the config.

Category
Developer Tools
Version
1.0.1
Registry
active
Published
10/15/2026

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OpenSDR — listed on Serverdex

HTML — for your website

<a href="https://serverdex.io/server/io-github-arif-js-opensdr-mcp?utm_source=badge"><img src="https://serverdex.io/brand/badge.svg" alt="OpenSDR — listed on Serverdex" width="123" height="40" loading="lazy"></a>

Recommended. A dofollow link from your own domain is the one that counts for search engines, and it's the link we check for a free listing.

Markdown — for your README

[![OpenSDR — listed on Serverdex](https://serverdex.io/brand/badge.svg)](https://serverdex.io/server/io-github-arif-js-opensdr-mcp?utm_source=badge)

Nice for visibility, but GitHub marks README links nofollow, so it doesn't pass authority. Use the HTML badge on your site as well.