jsr-mcp

A Deno monorepo containing packages for JSR (JavaScript Registry) access:

• [@wyattjoh/jsr](packages/jsr) - Core library for JSR API access
• [@wyattjoh/jsr-mcp](packages/jsr-mcp) - Model Context Protocol (MCP) server for LLM integration

• Search packages across the JSR registry
• Get package details, versions, and dependencies
• Manage scopes and package publishing
• Handle member invitations and permissions
• Access registry statistics and metadata
• Full authentication support for write operations

• Deno 2.x or later
• Network access to JSR API
• JSR API token for authenticated operations (optional)

Core library for accessing JSR API:

deno add @wyattjoh/jsr

import { getPackage, searchPackages } from "@wyattjoh/jsr";

const results = await searchPackages({ query: "react" });
const pkg = await getPackage("deno", "std");

See full documentation

MCP server for LLM integration:

# Run directly from JSR
deno run --allow-net --allow-env jsr:@wyattjoh/jsr-mcp

# Or install globally
deno install --global --allow-net --allow-env -n jsr-mcp jsr:@wyattjoh/jsr-mcp

For Claude Desktop app integration, add this to your claude_desktop_config.json:

{
  "mcpServers": {
    "jsr": {
      "command": "deno",
      "args": [
        "run",
        "--allow-net",
        "--allow-env",
        "jsr:@wyattjoh/jsr-mcp"
      ],
      "env": {
        "JSR_API_TOKEN": "your-api-token-here"
      }
    }
  }
}

1. Clone this repository
2. Install dependencies:

   deno cache packages/*/mod.ts

1. Run the server:

   deno run --allow-net --allow-env packages/jsr-mcp/mod.ts

The MCP server provides 40 tools for comprehensive JSR access:

• jsr_search_packages - Search for packages
• **jsr_get