OpenSDR

MCP server · by arif-js

Developer Tools npm v1.0.1

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

View source ↗ Generate config for multiple servers More servers

Install

Run one of the commands below, then pick your client in the next section.

npm
npx -y opensdr-mcp

Setup by client

Pick your client — the config below is generated for this server (local stdio).

claude_desktop_config.json

{
  "mcpServers": {
    "opensdr-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "opensdr-mcp"
      ],
      "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>"
      }
    }
  }
}

Format verified against the official Claude Desktop docs ↗.

terminal

claude mcp add --env APOLLO_API_KEY=<YOUR_APOLLO_API_KEY> --env HUNTER_API_KEY=<YOUR_HUNTER_API_KEY> --env EXA_API_KEY=<YOUR_EXA_API_KEY> --env TAVILY_API_KEY=<YOUR_TAVILY_API_KEY> --env INSTANTLY_API_KEY=<YOUR_INSTANTLY_API_KEY> --env HUBSPOT_ACCESS_TOKEN=<YOUR_HUBSPOT_ACCESS_TOKEN> opensdr-mcp -- npx -y opensdr-mcp

Format verified against the official Claude Code docs ↗.

.cursor/mcp.json

{
  "mcpServers": {
    "opensdr-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "opensdr-mcp"
      ],
      "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>"
      }
    }
  }
}

Format verified against the official Cursor docs ↗.

.vscode/mcp.json

{
  "servers": {
    "opensdr-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "opensdr-mcp"
      ],
      "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>"
      }
    }
  }
}

Format verified against the official VS Code docs ↗.

mcp_config.json

{
  "mcpServers": {
    "opensdr-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "opensdr-mcp"
      ],
      "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>"
      }
    }
  }
}

Format verified against the official Windsurf docs ↗.

Environment variables

Defined in the server's official registry manifest. Required secrets are shown as <YOUR_…> placeholders in the configs above.

APOLLO_API_KEY secret — Apollo API key for people/company search and enrichment (optional)
HUNTER_API_KEY secret — Hunter API key for email finding and verification (optional)
EXA_API_KEY secret — Exa API key for buying signals and account research (optional)
TAVILY_API_KEY secret — Tavily API key, an alternative to Exa for signals and research (optional)
INSTANTLY_API_KEY secret — Instantly API v2 key for draft campaigns and lead enrollment (optional)
HUBSPOT_ACCESS_TOKEN secret — HubSpot private-app token for contact sync (optional)
OPENSDR_READ_ONLY — Set to 1 to disable every tool that writes to an external service
OPENSDR_MAX_CREDITS_PER_CALL — Hard cap on estimated paid provider credits per tool call

About this server

Distributed as npm, listed under Developer Tools. Review our MCP security guide before granting access to real data.

Frequently asked questions

How do I install OpenSDR?

Run the install command shown above, then paste the config for your client (Claude Desktop, Claude Code, Cursor, VS Code or Windsurf) into its MCP settings and restart the client.

Is OpenSDR free to use?

The MCP server itself is free to install. The source is public on https://github.com/arif-js/opensdr-mcp. Any third-party service it calls may require its own API key and account.

Which clients support OpenSDR?

Any MCP-compatible client can use it, including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf and custom agents.

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