Aegis - AI Agent Governance MCP Server

The governance layer for AI agents. One API, 12 frameworks, every governance primitive. It runs locally over stdio via the published package.

People connecting AI & ML tools to Claude, Cursor, VS Code, or another MCP client. The project is written in Python.

VERIFIED ACTIVE

LAST COMMIT 2026-08-09 · ★ 15 · #35 OF 95 MAINTAINED AI & ML · VERIFIED 2026-08-25

MIT · Python servers · how we verify → /methodology

01 · Install Aegis - AI Agent Governance

Claude Code

claude mcp add acacian-aegis -- uvx agent-aegis

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "acacian-aegis": {
      "command": "uvx",
      "args": [
        "agent-aegis"
      ]
    }
  }
}

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 agent-aegis - check the name against the project README before installing (PyPI has no namespace ownership)

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

03 · What Aegis - AI Agent Governance can do

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

Latest releases

v1.0.0 · 2026-08-08

First stable release. · 1.0.0 adds no features. It states what the existing surface guarantees - and it ships only because that surface was verified to still work. · The API is now stable · API Stability is the binding…

v0.9.5 · 2026-04-27

What's New · MCP STDIO Injection Protection (NEW) · Full defense against the OX Security MCP STDIO vulnerability (2026-04-15) · 3-layer protection: content scanning, frame validation, unified guard · Detects JSON-RPC…

v0.9.4 · 2026-04-11

What's New · \aegis check drift\ CLI · Offline entropy-based drift detector for saved agent traces. Same signal that \auto_instrument()\ exposes at runtime, now runnable on any JSONL trace from LangSmith, OTel, or…

04 · Who maintains Aegis - AI Agent Governance

Aegis - AI Agent Governance is maintained by acacian. It's the only MCP server we track from this author; the repo dates to Mar 2026.

05 · Facts

repository: github.com/acacian/aegis
category: AI & ML - ranked #35 of 95 actively-maintained AI & ML servers as of 2026-08-25.
release cadence: 1 release in the last 90 days (latest 2026-08-08)
registry: io.github.Acacian/aegis (active, first published 2026-03-22 · 2 versions)
packages: pypi:agent-aegis

06 · Aegis - AI Agent Governance FAQ

What is Aegis - AI Agent Governance?

The governance layer for AI agents. One API, 12 frameworks, every governance primitive. It runs locally over stdio via the published package.

Is Aegis - AI Agent Governance still maintained?

Yes - as of 2026-08-25, its last commit was 2026-08-09 and it shipped 1 release in the last 90 days. We re-verify nightly.

How do I install Aegis - AI Agent Governance?

Run `uvx agent-aegis`. You can also paste the ready-made client config above.

Does Aegis - AI Agent Governance 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 Aegis - AI Agent Governance

Alternatives to Aegis - AI Agent Governance

Maintained AI & ML servers if Aegis - AI Agent Governance isn't the fit.

Pairs well with

Servers that cover what Aegis - AI Agent Governance doesn't - only shown when the pairing reason fits the companion.

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