Lean Ctx
lean-ctx-bin · by yvgude
Hybrid Context Optimizer — Shell Hook + MCP Server. Reduces LLM token consumption by 89-99%. Single Rust binary, zero dependencies.
No known CVEs
MIT license
Actively maintained
Last commit 11d ago
Works with most clients
Transport: stdio, sse, http
15 tools · ~1.0k tok
Grade B · 0.5% of 200K ctx
MCPpedia last refreshed this data
Lean Ctx is an MCP server that hybrid Context Optimizer — Shell Hook + MCP Server. Reduces LLM token consumption by 89-99%. Single Rust binary, zero dependencies. Its tool list has not been published yet over stdio, sse and http, requires no API key, and scores 91/100 on MCPpedia's security, maintenance and efficiency rubric.
Step 1
Install in your client
Config is the same across clients — only the file and path differ.
CD
Supported in Claude Desktopstdio, sse, http · Node 18+
Paste into ~/Library/Application Support/Claude/claude_desktop_config.json
{
"mcpServers": {
"lean-ctx": {
"command": "lean-ctx"
}
}
}Are you the author?
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[](https://mcppedia.org/s/lean-ctx)
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What Lean Ctx does
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Test This Server
This server supports HTTP transport. Be the first to test it — help the community know if it works.
Scored, not listed
Why this score
Five weighted categories — click any category to see the underlying evidence.
Score breakdown
91/100across 5 weighted dimensions
0255075100
30
20
16
15
10
−9
Security
Maintenance
Efficiency
Documentation
Compatibility
Categoriesclick a row to see evidence
Security
OSV.devNo known CVEs.
Checked lean-ctx-bin against OSV.dev.
Inventory
Tools (15)
Click any tool to inspect its schema.
~1.0k tokens total
Community
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Frequently Asked Questions
- Is Lean Ctx safe to use?
- Lean Ctx has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under MIT.
- How do I install Lean Ctx?
- Lean Ctx supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
- What can Lean Ctx do?
- Lean Ctx provides 15 tools: ctx_read, ctx_map, ctx_delta, ctx_git, ctx_ls and 10 more. See the full tools list on the server page for descriptions and parameters.
- What AI clients work with Lean Ctx?
- Lean Ctx is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.
- Is Lean Ctx actively maintained?
- Lean Ctx is actively maintained — last commit was 11 days ago. It has 3,655 GitHub stars.
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