Ouroboros MCP Server

It gets smarter on its own. We just hold the line. Skip the prompt engineering. The agent runs, fails, and gets smarter every generation. The grading command and expected result never make it into the success contract we hand it. It runs locally over stdio via the published package.

People who work with agent os, llm orchestration and agentic ai and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in Python.

VERIFIED ACTIVE

LAST COMMIT 2026-09-15 · ★ 6,016 · #4 OF 229 MAINTAINED CODING AGENT · VERIFIED 2026-09-18

MIT · Python servers · how we verify → /methodology

01 · Install Ouroboros

Claude Code

claude mcp add q00-ouroboros -- uvx ouroboros-ai

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "q00-ouroboros": {
      "command": "uvx",
      "args": [
        "ouroboros-ai"
      ]
    }
  }
}

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 MIT - declared in the repository

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

registry namespace io.github.Q00 is GitHub-verified and matches the repo owner

03 · What Ouroboros can do

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

Latest releases

v0.54.4 · 2026-09-13

stabilize semantic AC keys for set artifacts · avoid PowerShell error for Microsoft Store Python alias · classify completed command test claims as evidence-form mismatches · preserve Windows mechanical command…

v0.54.3 · 2026-09-10

Highlights · Run failures are named, not unknown (#2387). 42% of failed run · outcomes on 0.54.x reached telemetry as unknown with no failure_cause, · because three paths never went through the failure-cause…

v0.54.2 · 2026-09-09

Highlights · Verifier false-rejection stack (#2376, #2377, #2378). Three independent · ways the evidence gate rejected work that had actually been done, now closed: · transcript-proven functional checks of sibling…

04 · Who maintains Ouroboros

Ouroboros is maintained by q00. It's the only MCP server we track from this author; the repo dates to Jan 2026.

05 · Facts

repository
github.com/q00/ouroboros
category
coding agent - ranked #4 of 229 actively-maintained coding agent servers as of 2026-09-18.
release cadence
10+ releases in the last 90 days (latest 2026-09-13)
registry
io.github.Q00/ouroboros (active, first published 2026-08-14)
packages
pypi:ouroboros-ai

06 · Ouroboros FAQ

What is Ouroboros?

It gets smarter on its own. We just hold the line. Skip the prompt engineering. The agent runs, fails, and gets smarter every generation. The grading command and expected result never make it into the success contract we hand it. It runs locally over stdio via the published package.

Is Ouroboros still maintained?

Yes - as of 2026-09-18, its last commit was 2026-09-15 and it shipped 10+ releases in the last 90 days. We re-verify nightly.

How do I install Ouroboros?

Run `uvx ouroboros-ai`. You can also paste the ready-made client config above.

Does Ouroboros 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 Ouroboros

Alternatives to Ouroboros

Maintained coding agent servers if Ouroboros isn't the fit.

  1. Serena A powerful toolkit for coding, providing semantic retrieval and editing capabilities. ★ 29,556 · 2026-09-17
  2. Desktop Commander MCP server for terminal commands, file operations, and process management ★ 9,633 · 2026-09-17
  3. Socraticode MCP server for enterprise local codebase indexing, semantic search, and code dependency graphs. ★ 3,312 · 2026-09-17
  4. Omnara Deploy durable AI agents with Omnara, an open-source managed-agent platform. ★ 2,858 · 2026-09-18
  5. Docs Search and read Empryo's documentation. Read-only, no auth, no local access. ★ 1,246 · 2026-09-17
  6. Magic Cloud Generate secured CRUD APIs over your database, run SQL, manage files, tasks and a headless browser ★ 1,193 · 2026-09-18

Pairs well with

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

  1. Context7 → documentation companion documentation · ★ 62,152
  2. GitLab MCP → documentation companion documentation · ★ 1,984
  3. Xcode Build MCP → developer tools companion developer tools · ★ 6,397
  4. Sentry MCP → developer tools companion developer tools · ★ 855
  5. Server Filesystem → filesystem companion filesystem · ★ 39,038
  6. Pdf MCP → filesystem companion filesystem · ★ 135

head to head · Serena vs Ouroboros · Ouroboros vs Desktop Commander · Ouroboros vs LLM Sandbox

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