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agentlint
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Lint & secure your AI agent config

Paste a CLAUDE.md, subagent, slash command, settings.json or .mcp.json — agentcheck catches the real-world misconfigurations and security problems before they bite. Also scans cross-tool instruction files: AGENTS.md, Cursor, Copilot, Windsurf & Cline.

Every red finding means agentcheck caught a real problem — that's the tool working. A valid config shows a green ✓ No problems found.

Validate a config

Paste it below. Rules, secret scanning and permission checks, all in your browser.

Start below

Install building blocks

198 vetted skills, MCP servers & tools — copy, download, or npx @bacnguyenne/agentcheck add.

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Explore the ecosystem

138 GitHub repos grouped into collections — coding, office, writing, research & more.

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Try an example:

The broken examples are intentional — each red finding is agentcheck catching a real problem.

Results

Results appear here. Paste a config and press Validate.