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Osiris MCP Server

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local only

Osiris runs on your own machine — the client starts it, so there is no endpoint to ping. Last commit 2 Nov 2026.

Cache-aware context engine for AI agents: server-side payload filtering, honest context ledger.

—
Installs / week
npm · osiris-mcp
1
Stars
0 open issues
2 Nov 2026
Last commit
2 releases in 90 days
MIT
License
Python

Nothing serious here today

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

Three servers free · no card

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.

run in your terminal
claude mcp add osiris -- npx -y osiris-mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "osiris": {
      "command": "npx",
      "args": [
        "-y",
        "osiris-mcp"
      ]
    }
  }
}
~/.codex/config.toml
[mcp_servers.osiris]
command = "npx"
args = ["-y", "osiris-mcp"]
.cursor/mcp.json
{
  "mcpServers": {
    "osiris": {
      "command": "npx",
      "args": [
        "-y",
        "osiris-mcp"
      ]
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "osiris": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "osiris-mcp"
      ]
    }
  }
}

Optional settings from the registry entry, left out of the block above: OSIRIS_HOME (Repertoire d'etat OSIRIS : base SQLite, rapports, caches. Defaut ~/.osiris), OSIRIS_ROOTS (Racines autorisees pour la lecture de fichiers, separees par ';'. Vide = aucune lecture de fichier), OSIRIS_CACHE_TTL_S (TTL du cache en secondes), OSIRIS_PRUNE_THRESHOLD_TOKENS (Seuil de prune en tokens), OSIRIS_DISPATCH_ONLY (1 = n'expose que l'outil osiris.call (table d'outils stable pour le prefix cache)).

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Osiris — questions

Answers built from our own checks of this server.

Why is there no uptime for Osiris?
Osiris 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 osiris-mcp.
How do I connect Osiris?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls osiris-mcp straight from npm; nothing to host, nothing to sign up for.
Is Osiris open source?
Yes — it is published under the MIT licence, written in Python and 1 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.