This skill should be used when the user asks to "add MCP server", "integrate MCP", "configure MCP in plugin", "use .mcp.json", "set up Model Context Protocol", "connect external service", mentions "${CLAUDE_PLUGIN_ROOT} with MCP", or discusses MCP server types (SSE, stdio, HTTP, WebSocket). Provides comprehensive guidance for integrating Model Context Protocol servers into Claude Code plugins for external tool and service integration.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# MCP Integration for Claude Code Plugins
## Overview
Model Context Protocol (MCP) enables Claude Code plugins to integrate with external services and APIs by providing structured tool access. Use MCP integration to expose external service capabilities as tools within Claude Code.
**Key capabilities:**
- Connect to external services (databases, APIs, file systems)
- Provide 10+ related tools from a single service
- Handle OAuth and complex authentication flows
- Bundle MCP servers with plugins for automatic setup
## MCP Server Configuration Methods
Plugins can bundle MCP servers in two ways:
### Method 1: Dedicated .mcp.json (Recommended)
Create `.mcp.json` at plugin root:
```json
{
"database-tools": {
"command": "${CLAUDE_PLUGIN_ROOT}/servers/db-server",
"args": ["--config", "${CLAUDE_PLUGIN_ROOT}/config.json"],
"env": {
"DB_URL": "${DB_URL}"
}
}
}
```
**Benefits:**
- Clear separation of concerns
- Easier to maintain
- Better for multiple servers
### Method 2: Inline in plugin.json
Add `mcpServers` field to plugin.json:
```json
{
"name": "my-plugin",
"version": "1.0.0",
"mcpServers": {
"plugin-api": {
…
The line at the top of this page pins the label v0.1.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
GET https://markdownregistry.com/api/v1/artifacts/art_pvl5qkcadgemgygc
GET https://markdownregistry.com/api/v1/resolve?ref=nota-america/forgecat-agent-profiles/mcp-integration
GET https://markdownregistry.com/api/v1/blob/2bcc3b5e93924d7632218f494890f6e6f75a9248138bc97070bc62aea942dd49
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nota-america/forgecat-agent-profiles · profiles/addyosmani/agent-skills/for-claude/.claude/skills/code-simplification/SKILL.md · Simplifies code for clarity. Use when refactoring code for clarity
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nota-america/forgecat-agent-profiles · profiles/addyosmani/agent-skills/for-claude/.claude/skills/context-engineering/SKILL.md · Optimizes agent context setup. Use when starting a new session,
nota-america/forgecat-agent-profiles · profiles/addyosmani/agent-skills/for-claude/.claude/skills/deprecation-and-migration/SKILL.md · Manages deprecation and migration. Use when removing old systems,
nota-america/forgecat-agent-profiles · profiles/addyosmani/agent-skills/for-claude/.claude/skills/documentation-and-adrs/SKILL.md · Records decisions and documentation. Use when you need to document
nota-america/forgecat-agent-profiles · profiles/addyosmani/agent-skills/for-claude/.claude/skills/doubt-driven-development/SKILL.md · Subjects every non-trivial decision to a fresh-context adversarial
anthropics/claude-plugins-official · plugins/plugin-dev/skills/mcp-integration/SKILL.md · This skill should be used when the user asks to "add MCP server", "integrate MCP", "configure MCP in plugin", "use…
nota-america/forgecat-agent-profiles · profiles/anthropics/claude-plugins-official/anthropics_claude-plugins-official_plugin-dev/for-claude/.claude/skills/mcp-integration/SKILL.md · This skill should be used when the user asks to "add MCP server",
nota-america/forgecat-agent-profiles · profiles/anthropics/claude-plugins-official/anthropics_claude-plugins-official_plugin-dev/for-codex/.agents/skills/mcp-integration/SKILL.md · This skill should be used when the user asks to "add MCP server",
nota-america/forgecat-agent-profiles · profiles/anthropics/claude-plugins-official/anthropics_claude-plugins-official_plugin-dev/for-cursor/.cursor/skills/mcp-integration/SKILL.md · This skill should be used when the user asks to "add MCP server",
sivan757/dsh-agent-plugins-market · plugins/plugin-dev/skills/mcp-integration/SKILL.md · This skill should be used when the user asks to "add MCP server", "integrate MCP", "configure MCP in plugin", "use…