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Development & Coding
MCP Builder skill
Guides creation of high-quality MCP (Model Context Protocol) servers for integrating external APIs and services with LLMs. Covers both Python (FastMCP) and TypeScript (MCP SDK) implementations. Includes patterns for tool definitions, resource management, and authentication flows.
Why it matters
MCP is the standard protocol for connecting AI agents to external services. This skill lets agents build their own integrations on demand. Official Anthropic skill with 25k+ installations.
How to install MCP Builder
- With the skills CLI. One command copies the skill into your project:
npx skills add anthropics/skills --skill mcp-builder - In Claude Code, by hand. Copy the
mcp-builderfolder from the repository into.claude/skills/in your project, or into~/.claude/skills/to use it everywhere. - In AGNT. Download AGNT free, then add the skill folder from Skills → Import. It runs with the model you choose, next to your agents, workflows and memory.
Source and maintenance
| Repository | anthropics/skills |
| Skill folder | mcp-builder |
| GitHub stars (13 November 2026) | 194,032 |
| Last commit | 6 Nov 2026 |
| Category | Development & Coding |
| Ranked | #4 in The 100 Best AI Agent Skills in 2027 |
Checked against GitHub on 13 November 2026.
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