How do I install the source mcp server?

Use a recorded configuration for your client, replace example credential values and paths, and verify the documented runtime. Restart or reconnect the client, then inspect the available tools.

What credentials does it need?

It reads `SOURCE_MAP_PARSER_RESOURCE_CACHE_MAX_SIZE`, `SOURCE_MAP_PARSER_CONTEXT_OFFSET_LINE` from the environment. Store these in your client's env block or a secrets manager — never commit them to a repository — and grant the narrowest scope that still covers your use case.

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Source MCP Server

Parse JavaScript error stack traces back to original source code using source maps

Local serverstdioTypeScript

What is the Source MCP Server?

Parse JavaScript error stack traces back to original source code using source maps

The short version

This project implements a WebAssembly-based Source Map parser that can map JavaScript error stack traces back to source code and extract relevant context information. Developers can easily map JavaScript error stack traces back to source code for quick problem identification and resolution. This documentation aims to help developers better understand and use this tool.

More MCP options

Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.

Maintainer setup documentation.

Recorded tools

Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.

Tool	What it does
operating_guide	Get usage instructions for the MCP service. Provides information on how to use the MCP service through chat interaction.
parse_stack	Parse stack information by providing stack traces and Source Map addresses.
lookup_context	Look up original source code context for a specific line and column position in compiled/minified code.
unpack_sources	Extract all source files and their content from a source map.

How to install the Source MCP Server

{
  "mcpServers": {
    "source-map-parser": {
      "command": "npx",
      "args": ["-y", "source-map-parser-mcp"],
      "env": {
        "SOURCE_MAP_PARSER_RESOURCE_CACHE_MAX_SIZE": "your-value",
        "SOURCE_MAP_PARSER_CONTEXT_OFFSET_LINE": "your-value"
      }
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Configuration

Variable	Description	Required
SOURCE_MAP_PARSER_RESOURCE_CACHE_MAX_SIZE	Configuration value read at startup.	Optional
SOURCE_MAP_PARSER_CONTEXT_OFFSET_LINE	Configuration value read at startup.	Optional

Example prompts to try

“Use Source to operating guide.”
“Use Source to parse stack.”
“Use Source to lookup context.”

Frequently asked questions

Parse JavaScript error stack traces back to original source code using source maps Confirm the tools offered by your installed version in the connected client. Tool availability and permissions depend on the server and account configuration.