Mcp_tool_chainer

What is Mcp_tool_chainer?

An MCP (Model Context Protocol) server that chains calls to other MCP tools, allowing sequential tool execution with result passing to reduce token usage. It was designed to solve issue #215 of the MCP specification.

How to use Mcp_tool_chainer?

Install via npm (npm install -g @thirdstrandstudio/mcp-tool-chainer) or build from source. Add it as the last MCP server in your claude_desktop_config.json or mcp.json using npx -y @thirdstrandstudio/mcp-tool-chainer (or the built path). Then invoke the mcp_chain tool with a mcpPath array of tool calls, using CHAIN_RESULT to pass intermediate results.

Key features of Mcp_tool_chainer

• Chains multiple MCP tools together in sequence
• Passes results from one tool to another using CHAIN_RESULT placeholder
• Automatically discovers tools from configured MCP servers
• Minimal token usage compared to individual tool calls
• Provides three MCP tools: mcp_chain, chainable_tools, and discover_tools

Use cases of Mcp_tool_chainer

• Fetch a webpage and then extract specific content with XPath in a single call
• Build multi-step data processing pipelines without sending large intermediate results back to the LLM
• Simplify complex workflows that require sequential tool interactions
• Reduce latency by minimizing round-trips between the LLM and tools

FAQ from Mcp_tool_chainer

What is the purpose of Mcp_tool_chainer?

It chains calls to other MCP tools, passing results between them sequentially to reduce token usage and round-trips.

What are the prerequisites for using Mcp_tool_chainer?

Node.js v16 or later and npm or yarn.

How do I install Mcp_tool_chainer?

Install globally via npm install -g @thirdstrandstudio/mcp-tool-chainer or clone the repository and build from source with npm install && npm run build.

How do I configure Mcp_tool_chainer for use with Claude Desktop or Cursor?

Add an entry to your claude_desktop_config.json or mcp.json with command npx and args `["-