OpenTrain

io.github.OpenTrain-AI/opentrain

Hire human data labelers, RLHF annotators, and evaluators from your coding agent.

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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": {
    "opentrain": {
      "command": "npx",
      "args": [
        "-y",
        "@opentrain-ai/mcp@0.2.2"
      ],
      "env": {
        "OPENTRAIN_PERSONAL_API_TOKEN": "<your OPENTRAIN_PERSONAL_API_TOKEN>",
        "OPENTRAIN_API_BASE_URL": "https://app.opentrain.ai"
      }
    }
  }
}
Environment variables
  • OPENTRAIN_PERSONAL_API_TOKENsecretOpenTrain personal API token (ot_pat_...). Optional: if absent, the server can register an anonymous agent account at runtime for a human to claim.
  • OPENTRAIN_API_BASE_URLOpenTrain API base URL. Defaults to https://app.opentrain.ai.

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

Category
Developer Tools
Version
0.2.2
Registry
active
Published
6/15/2026

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Add the badge to your site

Show visitors that OpenTrain is listed here — it’s also the link we check for a free listing.

OpenTrain — listed on Serverdex

HTML — for your website

<a href="https://serverdex.io/server/io-github-opentrain-ai-opentrain?utm_source=badge"><img src="https://serverdex.io/brand/badge.svg" alt="OpenTrain — 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

[![OpenTrain — listed on Serverdex](https://serverdex.io/brand/badge.svg)](https://serverdex.io/server/io-github-opentrain-ai-opentrain?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.