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v0.1.0 — First Public Release

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@lennney lennney released this 31 Jul 20:33

mcp-slim-guard v0.1.0

The control plane between AI agents and MCP servers.

Reclaim ~83% of MCP tool-schema context without changing your existing servers — and verify the result yourself.

Key Features

  • 5-level schema compression — off/light/normal/extreme/maximum, plus lazy loading
  • Security pipeline — glob-based allow/deny → SSRF protection → injection detection (17 patterns) → rate limiting (Token Bucket) → audit logging
  • STDIO + HTTP transport — works with Claude Code, Cursor, Codex, and any MCP client
  • SIGHUP hot reload — zero-downtime config changes
  • Audit logging — Pino JSON output with file rotation and gzip compression
  • Request caching — TTL+LRU memory cache for read-only tool calls
  • Schema stats in CLI — transparent character count + estimated token count
  • Benchmark suite — 4 modules: tokens, schema, latency, accuracy

Quick Start

npm install -g mcp-slim-guard
mcp-slim-guard init
mcp-slim-guard validate
mcp-slim-guard start

Stats

  • 402 tests, 20 test files
  • 5 production dependencies
  • Node.js ≥ 18
  • MIT License