Aperion Shield MCP Server

aperion-shield is a tiny, local MCP guardrail that sits between your AI coding agent (Cursor, Claude Code, …) and the real MCP servers your agent talks to (postgres, github, shell, filesystem, …) - local stdio servers and, since v0.9, remote Streamable HTTP ones.

People who need coding agent tools inside Claude, Cursor, VS Code, or another MCP client. The project is written in Rust.

VERIFIED ACTIVE

LAST COMMIT 2026-08-14 · ★ 7 · #170 OF 194 MAINTAINED CODING AGENT · VERIFIED 2026-08-25

NOASSERTION · Rust servers · how we verify → /methodology

01 · Install Aperion Shield

before you install - you'll need

Set SHIELD_CLOAK_VALUE before connecting.

Docker

docker run -i --rm ghcr.io/aperionai/shield:shield-v1.0.1

Claude Desktop - add to config

{
  "mcpServers": {
    "aperionai-shield": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/aperionai/shield:shield-v1.0.1"
      ]
    }
  }
}

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 container (OCI image) - can be sandboxed away from your filesystem

license no standard license detected - usage rights unclear; check the repo before commercial use

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

03 · What Aperion Shield can do

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

Latest releases

shield-v1.4.0 · 2026-07-16

shield-v1.2.1 · 2026-07-03

shield-v1.2.0 · 2026-07-02

04 · Who maintains Aperion Shield

Aperion Shield is maintained by aperionai. It's the only MCP server we track from this author; the repo dates to May 2026.

05 · Facts

repository: github.com/aperionai/shield
website: https://docs.aperion.ai/aperion-shield.html
category: coding agent - ranked #170 of 194 actively-maintained coding agent servers as of 2026-08-25.
release cadence: 8 releases in the last 90 days (latest 2026-07-16)
registry: io.github.AperionAI/shield (active, first published 2026-06-10 · 2 versions)
packages: oci:ghcr.io/aperionai/shield:shield-v1.0.1

06 · Aperion Shield FAQ

What is Aperion Shield?

Is Aperion Shield still maintained?

Yes - as of 2026-08-25, its last commit was 2026-08-14 and it shipped 8 releases in the last 90 days. We re-verify nightly.

How do I install Aperion Shield?

Run `docker run -i --rm ghcr.io/aperionai/shield:shield-v1.0.1`. The README documents one environment variable (SHIELD_CLOAK_VALUE) to set first. Set SHIELD_CLOAK_VALUE before connecting. You can also paste the ready-made client config above.

07 · Alternatives to Aperion Shield

Alternatives to Aperion Shield

Maintained coding agent servers if Aperion Shield isn't the fit.

Pairs well with

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

More coding agent MCP servers · Rosetta MCP Server · Eu AI Act · Dvalincode · Agent Never Give Up · Roseline MCP

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