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Requirements

  • Python 3.11 or higher
  • pip or uv
uv is the fastest Python package manager. It installs LangSight as a global tool so langsight is available everywhere: 
# Install uv if you don't have it
curl -LsSf https://astral.sh/uv/install.sh | sh

# Install LangSight
uv tool install langsight

# Verify
langsight --version

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Install with pip

pip install langsight
langsight --version

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Install from source

git clone https://github.com/sumankalyan123/langsight
cd langsight
uv sync
uv run langsight --version

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Verify installation

langsight --help

Usage: langsight [OPTIONS] COMMAND [ARGS]...

  LangSight — MCP observability and security platform.

Commands:
  costs          Show MCP tool call cost attribution.
  init           Auto-discover MCP servers and generate .langsight.yaml.
  investigate    Investigate MCP failures and attribute root causes.
  mcp-health     Check the health of all configured MCP servers.
  monitor        Continuously monitor MCP servers and alert on state changes.
  security-scan  Scan MCP servers for security vulnerabilities.
  serve          Start the LangSight REST API server.

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Platform support

PlatformStatus
macOS (arm64, x86_64)✅ Supported
Linux (x86_64, arm64)✅ Supported
Windows (WSL2)✅ Supported
Windows (native)⚠️ Untested

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Upgrading

# uv
uv tool upgrade langsight

# pip
pip install --upgrade langsight

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Uninstalling

# uv
uv tool uninstall langsight

# pip
pip uninstall langsight