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 connecting coding agent tools to Claude, Cursor, VS Code, or another MCP client. The project is written in Python.

VERIFIED ACTIVE

LAST COMMIT 2026-08-25 · ★ 5,649 · #4 OF 194 MAINTAINED CODING AGENT · VERIFIED 2026-08-25

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

v0.51.15 · 2026-08-24

Hardening pass · No new surface in this patch - it closes the ways the engine could quietly stall, lie, or break outside a POSIX shell. · Nothing hangs forever. Every subprocess wait is now bounded (#2239), transient…

v0.51.14 · 2026-08-21

Make acceptance-criteria verification monotonic (#2187) · Close transformed retry contract encodings (#2218) · Recognize option-bearing uv test runs (#2212) · Negotiate host subagent dispatch through MCP · Keep one…

v0.51.13 · 2026-08-19

Reverts · Revert feat(verify): make AC verification monotonic (#2187), restoring the v0.51.11 behavior.

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 194 actively-maintained coding agent servers as of 2026-08-25.
release cadence: 10+ releases in the last 90 days (latest 2026-08-24)
registry: io.github.Q00/ouroboros (active, first published 2026-08-14)
packages: pypi:ouroboros-ai

06 · Ouroboros FAQ

What is Ouroboros?

Is Ouroboros still maintained?

Yes - as of 2026-08-25, its last commit was 2026-08-25 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.

Pairs well with

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

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

More coding agent MCP servers · Agentmap · Reachpad MCP · Raven · Tyrekick · Filesift

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