Klavis Strata MCP Router

Content

Klavis Strata is an open-source MCP router that sits between Claude and a set of configured MCP servers. Instead of exposing every downstream tool at once, it provides a smaller set of discovery, inspection, execution, documentation search, and authentication helper tools.

The open-source implementation lives under open-strata in the Klavis repository and is published as the strata-mcp Python package. It can run in stdio mode for local MCP clients or in HTTP/SSE mode for deployments that need a network transport.

Source Review

• https://github.com/Klavis-AI/klavis
• https://github.com/Klavis-AI/klavis/blob/main/README.md
• https://github.com/Klavis-AI/klavis/blob/main/open-strata/README.md
• https://github.com/Klavis-AI/klavis/blob/main/open-strata/pyproject.toml
• https://github.com/Klavis-AI/klavis/blob/main/open-strata/src/strata/server.py
• https://github.com/Klavis-AI/klavis/blob/main/open-strata/src/strata/tools.py
• https://github.com/Klavis-AI/klavis/blob/main/open-strata/src/strata/config.py
• https://github.com/Klavis-AI/klavis/blob/main/open-strata/src/strata/cli.py
• https://github.com/Klavis-AI/klavis/blob/main/MCP_SERVER_GUIDE.md
• https://github.com/Klavis-AI/klavis/blob/main/LICENSE
• https://pypi.org/pypi/strata-mcp/json
• https://www.klavis.ai/docs/concepts/strata
• https://www.klavis.ai/docs/mcp-server/overview

These sources were reviewed on 2026-06-05. Prefer the live repository, open-strata README, package metadata, router source files, PyPI metadata, and Klavis docs for current install commands, router modes, tool names, supported transports, and hosted-service boundaries.

Features

• Discover available actions across configured downstream MCP servers.
• Retrieve detailed tool schema and parameter information before execution.
• Execute a selected action on a selected downstream server.
• Search server documentation by keyword.
• Handle authentication failure flows for configured servers.
• Add, list, enable, disable, and remove downstream MCP server configurations through the strata CLI.
• Run as a stdio MCP server for local clients.
• Run as an HTTP/SSE router when a network transport is required.
• Watch the configuration file and sync enabled server connections while running.

Installation

Install the open-source router package:

pipx install strata-mcp

Add trusted downstream MCP servers with the Strata CLI. For example, a stdio server can be registered by name:

strata add --type stdio playwright npx @playwright/mcp@latest

Then configure Claude to launch Strata:

{
  "mcpServers": {
    "strata": {
      "command": "strata"
    }
  }
}

For HTTP or SSE downstream servers, use private endpoint placeholders and secret-managed headers rather than committing real bearer tokens or URLs into project files.

Use Cases

• Keep Claude's visible tool list smaller when a project uses many MCP servers.
• Discover which downstream server action is relevant before executing it.
• Route several trusted stdio and HTTP MCP servers behind one local MCP entry.
• Search tool documentation before calling a risky or unfamiliar action.
• Temporarily disable servers that should not be available in a given project.
• Experiment with progressive tool discovery for agent workflows.

Safety and Privacy

Strata concentrates access to many downstream tools. That is useful for context management, but it also means one MCP server entry can route to high-impact actions across files, browsers, SaaS APIs, databases, developer tools, and other systems. Audit each downstream server independently and keep the enabled set as small as the task allows.

The open-source source code stores server configuration in a local JSON file and supports headers and environment variables for downstream servers. Treat this configuration as sensitive. The HTTP/SSE router mode should be deployed behind appropriate network controls because it can expose access to every enabled server action.

Duplicate Check

No Klavis-AI/klavis, strata-mcp, Klavis Strata, or matching source URL was found in content/mcp.