SkillDex
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Claude CodeOther skillCodingactive

MCP Builder

A Claude Skill for designing and implementing MCP servers with clear tool names, schemas, transports, and evaluation coverage.

Overview

Use this reference when building an MCP server and deciding how to map an external API or service into useful tools for LLM clients.

What this Skill can do

  • Frames MCP server planning around API coverage, workflow tools, and context management.
  • Covers TypeScript and Python implementation paths.
  • Includes review, test, and evaluation expectations for MCP quality.

Best use cases

  • Planning MCP tools for an external API.
  • Implementing typed MCP server infrastructure.
  • Creating evaluations for realistic MCP tasks.

Not suitable for

  • Adding broad API wrappers without task-oriented tool descriptions.
  • Skipping authentication, transport, or pagination design.
  • Claiming an MCP server works without inspector or build verification.

Inputs

  • External API documentation, target language, and transport constraints.
  • Candidate tool names, input schemas, and expected outputs.
  • Evaluation questions or representative user tasks.

Outputs

  • MCP server design and implementation plan.
  • Tool schema and response-format guidance.
  • Testing and evaluation checklist.

Compatibility

Tools: Claude Code

Environments: Claude Code or compatible Skill runtime, TypeScript or Python MCP server workspace

  • Requires a concrete service/API target and an MCP client context.
  • Testing depends on local build tools and MCP Inspector or equivalent verification.

SkillDex catalogs the reference and does not run MCP servers.

Evidence summary

implementedVerified 2026-07-02

  • Source directoryrepo

    Public source directory and Apache-2.0 license file were checked for this catalog entry.

Related projects

Related projects are derived from project records for navigation and portfolio context. They do not replace evidence artifacts, prove shipment, or prove that this Skill was used in a project.

  • Project evidence status: prototypeProject record updated: 2026-07-02
    MemoryBridge MCP

    Portfolio project record for a local-first memory bridge concept around MCP-style retrieval and continuity.

    Open project record
  • Project evidence status: prototypeProject record updated: 2026-07-02
    RepoLens RAG

    Portfolio project record for repository-focused retrieval and codebase explanation workflows.

    Open project record

Safe example prompts

Plan an MCP server

Use the MCP Builder reference to plan a TypeScript MCP server for this external service before implementation.

Review tools

Use the MCP Builder reference to review whether these tool names, schemas, and outputs are agent-friendly.

Installation / usage

Reference the upstream public Skill directory.

  1. 1Open the GitHub source directory for the Skill.
  2. 2Review the MCP planning, implementation, and evaluation sections before building a server.

Source metadata

Author
anthropics
Repository
https://github.com/anthropics/skills
Directory
https://github.com/anthropics/skills/tree/main/skills/mcp-builder
License
Apache-2.0
Indexed
2026-07-02
Reviewed
2026-07-02