Ossian MCP Server

by dockndevaiio.github.dockndevai/ossian-mcpv0.2.2

RAG over your own documents with cited passages, plus durable agent memory ranked by relevance, importance and recency; read-only by default.

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Active27d ago

Install Ossian MCP server

claude mcp add ossian -e OSSIAN_API_KEY='<ossian-api-key>' -- npx -y ossian-mcp

{
  "mcpServers": {
    "ossian": {
      "command": "npx",
      "args": [
        "-y",
        "ossian-mcp"
      ],
      "env": {
        "OSSIAN_API_KEY": "<ossian-api-key>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "ossian": {
      "command": "npx",
      "args": [
        "-y",
        "ossian-mcp"
      ],
      "env": {
        "OSSIAN_API_KEY": "<ossian-api-key>"
      }
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "ossian": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "ossian-mcp"
      ],
      "env": {
        "OSSIAN_API_KEY": "<ossian-api-key>"
      }
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "ossian": {
      "command": "npx",
      "args": [
        "-y",
        "ossian-mcp"
      ],
      "env": {
        "OSSIAN_API_KEY": "<ossian-api-key>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Configuration

Variable	Required	Secret	Description
OSSIAN_URL	—	—	Base URL of the Ossian installation (e.g. http://localhost:8081).
OSSIAN_API_KEY	yes	yes	Ossian API key (osk_…). Scope it to the narrowest role/namespace that works.
OSSIAN_AGENT_ID	—	—	Separates one agent's memories from another's. Defaults to 'mcp'.
OSSIAN_MODE	—	—	Access mode: read-only \| read-write \| admin. Starts read-only; writes need read-write.

Freshness

Active — last maintenance signal 27d ago. The newest of the signals below sets the band.

Last commit (default branch)
2026-09-12 · 27d ago · GitHub
Latest release
2026-09-12 · 27d ago · GitHub · v0.2.2
Package published
no data · npm/PyPI
Registry entry updated
2026-09-12 · 27d ago · official registry · v0.2.2

FAQ

›How do I install the Ossian MCP server in Claude Code?

Run: claude mcp add ossian -e OSSIAN_API_KEY='<ossian-api-key>' -- npx -y ossian-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Ossian require an API key?

Yes. It expects OSSIAN_API_KEY, of which 1 is a secret.

›Can I use Ossian as a remote (hosted) MCP server?

No hosted endpoint is published; it runs locally over stdio.

›Is Ossian in the official MCP registry?

Yes, as io.github.dockndevai/ossian-mcp.