JSR MCP

JSR MCP

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

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

Features

• 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

Requirements

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

Packages

@wyattjoh/jsr

Core library for accessing JSR API:

See full documentation

@wyattjoh/jsr-mcp

MCP server for LLM integration:

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

Option 2: From Source

1. Clone this repository
2. Install dependencies:
   deno cache packages/*/mod.ts
3. Run the server:
   deno run --allow-net --allow-env packages/jsr-mcp/mod.ts

Available Tools

The MCP server provides 40 tools for comprehensive JSR access:

Package Operations

• jsr_search_packages - Search for packages
• jsr_get_package - Get package details
• jsr_get_package_version - Get specific version details
• jsr_list_package_versions - List all versions
• jsr_get_package_metadata - Get package metadata
• jsr_get_package_dependencies - Get dependencies
• jsr_get_package_score - Get package quality score
• jsr_get_package_dependents - Find dependent packages
• jsr_create_package - Create new package (requires auth)
• jsr_update_package - Update package (requires auth)
• jsr_delete_package - Delete package (requires auth)

Package Version Management

• jsr_create_package_version - Upload new version (requires auth)
• jsr_update_package_version - Update version, e.g., yank (requires auth)

Scope Management

• jsr_get_scope - Get scope details
• jsr_list_scope_packages - List packages in a scope
• jsr_create_scope - Create new scope (requires auth)
• jsr_update_scope - Update scope settings (requires auth)
• jsr_delete_scope - Delete scope (requires auth)

Member Management

• jsr_list_scope_members - List scope members
• jsr_add_scope_member - Invite member (requires auth)
• jsr_update_scope_member - Update member role (requires auth)
• jsr_remove_scope_member - Remove member (requires auth)
• jsr_list_scope_invites - List pending invites
• jsr_delete_scope_invite - Delete scope invite (requires auth)
• jsr_accept_scope_invite - Accept invite (requires auth)
• jsr_decline_scope_invite - Decline invite (requires auth)

User Operations

• jsr_get_current_user - Get authenticated user
• jsr_get_current_user_scopes - Get user's scopes
• jsr_get_current_user_scope_member - Get user's membership in a scope
• jsr_get_current_user_invites - Get user's pending invites
• jsr_get_user - Get user details
• jsr_get_user_scopes - Get user's scopes

Registry Operations

• jsr_list_packages - List all registry packages
• jsr_get_stats - Get registry statistics

Authorization (OAuth)

• jsr_create_authorization - Start authorization flow (requires auth)
• jsr_get_authorization_details - Get authorization details
• jsr_approve_authorization - Approve authorization (requires auth)
• jsr_deny_authorization - Deny authorization (requires auth)
• jsr_exchange_authorization - Exchange code for token (requires auth)

Publishing

• jsr_get_publishing_task - Get publishing task status

Example Usage

Security Notes

• Read operations do not require authentication
• Write operations require a valid JSR API token
• The server only accesses the JSR API endpoints
• No local file system access beyond reading environment variables

Development

This is a Deno workspace monorepo. All commands run from the root affect all packages.

Working on Individual Packages

License

MIT