Chaos Cypher MCP Server

Turn your documents into a knowledge graph you can inspect, search, chat with, and take with you - all running on your own machine. It runs locally over stdio via the published package.

People who work with docker, entity extraction and fastapi and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in Python.

VERIFIED ACTIVE

LAST COMMIT 2026-09-28 · ★ 3 · #138 OF 321 MAINTAINED MEMORY · VERIFIED 2026-09-30

AGPL-3.0 · Python servers · how we verify → /methodology

01 · Install Chaos Cypher

Claude Code

claude mcp add chaoscypherinc-chaoscypher -- uvx chaoscypher-cli

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "chaoscypherinc-chaoscypher": {
      "command": "uvx",
      "args": [
        "chaoscypher-cli"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license AGPL-3.0 - declared in the repository

pypi package chaoscypher-cli - check the name against the project README before installing (PyPI has no namespace ownership)

registry namespace io.github.chaoscypherinc is GitHub-verified and matches the repo owner

03 · What Chaos Cypher can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v0.5.0 · 2026-09-26

The first feature release since v0.4.0 - 30 commits since v0.4.3, 19 of them changing product code. Two themes. Knowledge in motion: a package you build can now be mounted straight into an MCP host as a one-line config…

v0.4.3 · 2026-09-21

A third fixes-only patch release - 54 commits since v0.4.2, 23 of them changing · shipped code. No new features, no breaking API changes, no schema migrations. · The queue and extraction paths dominate: several defects…

v0.4.2 · 2026-09-09

A second fixes-only patch release - 61 commits since v0.4.1. No new features, no · breaking API changes, no schema migrations. Security hardening, queue and chat · reliability, multi-container deployment repairs, and a…

04 · Who maintains Chaos Cypher

Chaos Cypher is maintained by chaoscypherinc. It's the only MCP server we track from this author; the repo dates to Jun 2026.

05 · Facts

repository: github.com/chaoscypherinc/chaoscypher
website: https://chaoscypher.com/
category: memory - ranked #138 of 321 actively-maintained memory servers as of 2026-09-30.
release cadence: 7 releases in the last 90 days (latest 2026-09-26)
registry: io.github.chaoscypherinc/chaoscypher (active, first published 2026-09-27)
packages: pypi:chaoscypher-cli

06 · Chaos Cypher FAQ

What is Chaos Cypher?

Turn your documents into a knowledge graph you can inspect, search, chat with, and take with you - all running on your own machine. It runs locally over stdio via the published package.

Is Chaos Cypher still maintained?

Yes - as of 2026-09-30, its last commit was 2026-09-28 and it shipped 7 releases in the last 90 days. We re-verify nightly.

How do I install Chaos Cypher?

Run `uvx chaoscypher-cli`. You can also paste the ready-made client config above.

Does Chaos Cypher run locally?

Yes - it's a stdio server: it runs on your machine (via uvx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Chaos Cypher

Alternatives to Chaos Cypher

Maintained memory servers if Chaos Cypher isn't the fit.

Pairs well with

Servers that cover what Chaos Cypher doesn't - only shown when the pairing reason fits the companion.

More memory MCP servers · Memory MCP (chenxiaofie) · Nautilus Compass Memory · Wisdomgraph · Clari Layer · Fit LLM

More Python MCP servers · Srdcheck · Pruna · Chipzen · Korea Data Suite · see all