noctua

noctua is an MCP server for Claude Code, Codex, Cursor, Gemini CLI, OpenCode from geneontology/noctua-mcp. Its token cost is not measured, scanned A, original, BSD-3-Clause.

A local MCP server for controlling Noctua editing in Barista, a separate editing system. It requires four environment variables to connect.

In plain words
What is it for?
Connecting to the specified Barista development namespace through Noctua. The input does not describe the editing operations the server provides.
Why use it?
It can give a coding agent access to Barista editing operations without manually configuring each request.

MCP server for Claude CodeCodexCursorGemini CLIOpenCode

Written for no agent in particular: it speaks MCP, so any client can run it. Also seen: listed in a Claude config.

Good fit Connecting to the specified Barista development namespace through Noctua. The input does not describe the editing operations the server provides.

Compare 6 mcp servers from other repositories ↓
Install with agentmods
npx agentmods add mcp/geneontology/noctua-mcp/noctua
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/geneontology/noctua-mcp

Made for: Claude Code, Codex, Cursor, Gemini CLI, OpenCode.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for noctua

README.md
[![agentmods](https://agentmods.dev/badge/mcp/geneontology/noctua-mcp/noctua/github.svg)](https://agentmods.dev/mcp/geneontology/noctua-mcp/noctua)
Your own site
<a href="https://agentmods.dev/mcp/geneontology/noctua-mcp/noctua"><img src="https://agentmods.dev/badge/mcp/geneontology/noctua-mcp/noctua/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for noctua

Your own site · 80×15
<a href="https://agentmods.dev/mcp/geneontology/noctua-mcp/noctua"><img src="https://agentmods.dev/badge/mcp/geneontology/noctua-mcp/noctua.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

noctua scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.mcp.json · 15 lines

What it actually says

{
  "noctua": {
    "command": "uv",
    "args": [
      "run",
      "noctua-mcp"
    ],
    "env": {
      "BARISTA_TOKEN": "${BARISTA_TOKEN}",
      "BARISTA_BASE": "http://barista-dev.berkeleybop.org",
      "BARISTA_NAMESPACE": "minerva_public_dev",
      "BARISTA_PROVIDED_BY": "http://geneontology.org"
    }
  }
}
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 10d ago First seen · 15 lines scan A 6d2525395be0

Subscribe to this mod's changes

noctua is an MCP server published in the GitHub repository geneontology/noctua-mcp (0 stars, last pushed 10mo ago), licensed BSD-3-Clause. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.