Ossian MCP Server

by dockndevai Your server? Claim it

local only

Ossian MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 39 installs a week from npm. Last commit 12 Oct 2026.

Ask your own documents with citations, plus durable memory for agents. Safe by default.

Installs per day peak 397 · avg 29 · +50% w/w

a month agotoday

Installs / week

npm · ossian-mcp

Stars

4 open issues

12 Oct 2026

Last commit

5 releases in 90 days

Apache-2.0

License

TypeScript

Nothing serious here today

Today is the operative word: we check Ossian MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add ossian-mcp -- npx -y ossian-mcp

~/Library/Application Support/Claude/claude_desktop_config.json

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

~/.codex/config.toml

[mcp_servers.ossian-mcp]
command = "npx"
args = ["-y", "ossian-mcp"]

.cursor/mcp.json

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

.vscode/mcp.json

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

This one needs environment variables set before it will start: OSSIAN_URL (Base URL of the Ossian installation (e.g. http://localhost:8081).), OSSIAN_API_KEY (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.). The author declared them in the registry entry; get the values from the project itself.

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Ossian MCP — questions

Answers built from our own checks of this server.

Why is there no uptime for Ossian MCP?

Ossian MCP runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package ossian-mcp was installed 39 times last week.

How do I connect Ossian MCP?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls ossian-mcp straight from npm; nothing to host, nothing to sign up for.

How many people use Ossian MCP?

The npm package ossian-mcp was installed 39 times in the last week. Week over week that is +50%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Ossian MCP open source?

Yes — it is published under the Apache-2.0 licence, written in TypeScript, 2 stars on GitHub and 4 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.