SkillRisingofficial publisher

mcp-builder (Anthropic)

Skill : A reusable method: instructions, procedures, sometimes scripts or templates · requires claude-code

Official skill that helps design and code a clean MCP server.

Useful as soon as you want to connect a custom service to an agent.

Official site GitHub · 176,203 ★

Overall score

8.7 /10

Security: nothing to flag

Utility

7.0

Reliability

10.0

Security

10.0

Ease

1 click · Comfortable

What it does, concretely

Building an MCP (Model Context Protocol) server from scratch requires knowing the protocol conventions, the expected file structure, and implementation best practices. Without guidance, developers waste time reading documentation and fixing structural errors.

mcp-builder is an official Anthropic skill that installs inside Claude Code. Once active, it loads a SKILL.md file containing precise instructions that Claude follows to design and generate the full code of an MCP server, respecting protocol conventions.

This skill is aimed at developers who want to connect a custom service or tool to a Claude agent, without having to memorize all MCP specifications. It suits those already working in Claude Code who want to automate this scaffolding step.

It is not suited for non-technical users looking for a graphical interface, nor for those without access to Claude Code, as the skill works exclusively in that environment.

What it offers

·Dynamic loading of specialized instructions via a SKILL.md file to guide Claude in generating MCP servers.
·Generation of the file structure and code of an MCP server following protocol conventions.
·Direct installation from the Claude Code plugin marketplace with a single command.
·Available as open source under the Apache 2.0 license, freely readable and modifiable.
·Usable as a reference or starting point for creating custom skills.
·Compatible with the Claude Code plugin system, allowing activation or deactivation depending on project needs.

Our tips

First add the repository as a marketplace with /plugin marketplace add anthropics/skills, then install the skill separately: this avoids loading all skills at once.
Once the skill is installed, simply mention it in your message to Claude Code to activate it, without any special command.
Check the skill's SKILL.md file in the GitHub repository before using it: it contains the exact instructions Claude receives, which helps you formulate more precise requests.
Use the template folder in the repository as a starting point if you want to create your own custom MCP skill after understanding how mcp-builder works.
Test the generated MCP server in an isolated environment before integrating it into a production agent, as recommended by the repository disclaimer.

Watch out

Claude's actual behavior may differ from the skill's instructions: the repository explicitly states that the implementations obtained may not exactly match what the skill describes.
The skill works only in Claude Code; it cannot be used directly on Claude.ai or via the API without adaptation.

In practice

Price: Free
Commercial use: Commercial use: yes
Available on: claude-code
Host: claude-code
Licence: Apache-2.0
FR interface: No

Security and data

Rating: Security: nothing to flag
Your data: Data stays local
Maintenance: Active

Card verified on 14 September 2026 · added on 1 October 2025

How to install mcp-builder (Anthropic)

1. Open Claude Code in your development environment. 2. Add the official marketplace with the command: /plugin marketplace add anthropics/skills 3. Select "Browse and install plugins", then "anthropic-agent-skills", then "example-skills". 4. Click "Install now" to install the skill group including mcp-builder. 5. Verify the skill is loaded by mentioning mcp-builder in a message to Claude Code. 6. Precaution: do not deploy the generated MCP server to production without first testing it in an isolated environment.

/plugin install example-skills@anthropic-agent-skills

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