A local scanner for code produced by AI that checks for hidden Unicode characters, Trojan Source attacks, and supply-chain threats. Trojan Source attacks use misleading text direction or characters to make code appear different from what it does.

Use it to inspect AI-generated code before accepting or running it.

It helps reveal security risks that may be invisible during a normal code review, including deceptive source text and potentially unsafe dependencies.

codesafer — MCP server by goldmembrane

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.

agentmods

npx agentmods add mcp/goldmembrane/cleaner-code/codesafer

Clone the repo

git clone --depth 1 https://github.com/goldmembrane/cleaner-code

Made for: Claude Code, Codex, Cursor.

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. Scan, not verified.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

codesafer 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 yesterday.

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.

server.json · 10 lines

What it actually says

{
  "codesafer": {
    "command": "npx",
    "args": [
      "-y",
      "cleaner-code"
    ],
    "env": {}
  }
}

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.

yesterday First seen · 10 lines scan A 76f67a5f55a3

Subscribe to this mod's changes

codesafer is an MCP server published in the GitHub repository goldmembrane/cleaner-code (1 stars, last pushed 4mo ago), licensed MIT. 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.

Security ai-security code-analysis codebert glassworm homoglyph mcp

codesafer

Getting it into your agent

Grade A, and why

Nothing flagged

What it actually says

What this file has done since we first saw it

Other mcp servers, from other repositories

web-fetcher

shellward

koma-gate-mcp

assay-mcp-server

bug-bounty-intelligence-mcp

aptu-coder