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MCP Builder: Connect Claude to Your APIs Without Reading the Docs

15-45 minutes per integration · advanced

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Official Anthropic skill on GitHub

MCP Server Builder

Summary

You want Claude to talk to your company's API or internal database. But MCP documentation is dense, the setup is confusing, and you're not sure where to start.

Instead, describe what you want to connect. Claude builds a working MCP server with proper error handling and authentication, ready to deploy.

Stop wrestling with protocol specs. Start shipping integrations that work.

Describe, don't configure

Tell Claude what API or database you need. It handles the MCP boilerplate, auth patterns, and error handling.

Production-ready from day one

Every server includes proper logging, graceful failures, and security best practices. Not a tutorial—real code.

Connect anything

Databases, REST APIs, GraphQL endpoints, internal tools. If it has an interface, Claude can build the bridge.

Pros

  • Build working MCP servers without reading protocol documentation
  • Production-ready code with error handling, logging, and auth patterns
  • Connect Claude to any API, database, or internal tool
  • Skip weeks of integration work—describe what you need in minutes
  • Security best practices built in from the start
  • Official Anthropic skill that understands MCP inside and out

Cons

  • You still need API credentials and access—Claude builds the bridge, not the permissions
  • Complex OAuth flows may require manual configuration of redirect URIs
  • Generated servers are starting points—production deployments should include your security review

How to use

How to Use MCP Server Builder Skill

Skill command:
1

Install the Skill

Download the skill file directly, or install via the plugin marketplace. Skills auto-activate when relevant—no manual invocation needed.

Option 1: Direct Download
curl -o .claude/skills/mcp-builder.md https://raw.githubusercontent.com/anthropics/skills/main/skills/mcp-builder/SKILL.md
Option 2: Plugin Marketplace
/plugin marketplace add anthropics/skills
/plugin install example-skills@anthropic-agent-skills
2

Describe Your Integration

Tell Claude what you want to connect and what operations you need. Be specific about auth requirements.

Example Prompt
Build an MCP server that connects to our PostgreSQL database. Read-only queries for now. We use connection pooling and need to handle timeouts gracefully.
3

Review and Customize

Claude generates the server code with your specific requirements. Review the auth handling and add your credentials.

Example Prompt
Add rate limiting—max 100 requests per minute. Also add a tool that lists available tables.
4

Test Locally

Run the server locally and test each tool. Claude helps debug connection issues and validates responses.

Example Prompt
The connection is timing out. Help me debug—here's the error: [paste error]
5

Deploy and Connect

Deploy your server and configure Claude to use it. Your integration is live.

Example Prompt
How do I add this MCP server to my Claude Desktop config?

Prompts

Example Prompts

Real-world scenarios showing how to use MCP Server Builder effectively

Connect to a REST API

Your prompt

/mcp-builder Build an MCP server for our internal inventory API. Base URL is https://api.internal/v2. It uses API key auth in the header. I need tools for: list products, get product by SKU, check stock levels.

Expected outcome

Claude generates a complete MCP server with three tools, proper API key handling, request/response validation, and error handling for common HTTP failures.

Database read access

Your prompt

/mcp-builder I need Claude to query our analytics PostgreSQL database. Read-only access. Connection string is in DATABASE_URL env var. Should be able to run arbitrary SELECT queries and describe table schemas.

Expected outcome

Claude builds an MCP server with SQL query execution, schema introspection tools, connection pooling, query timeout protection, and guards against non-SELECT statements.

Third-party SaaS integration

Your prompt

/mcp-builder Create an MCP server for Stripe. I need to list customers, get payment history, and check subscription status. We have a restricted API key with read-only permissions.

Expected outcome

Claude generates a Stripe MCP server using the official SDK, with proper pagination handling, rate limit awareness, and typed responses for each operation.

Internal tool automation

Your prompt

/mcp-builder Our team uses a custom ticketing system with a GraphQL API. I want Claude to be able to create tickets, update status, and add comments. Auth is OAuth2 with refresh tokens.

Expected outcome

Claude builds an MCP server with GraphQL operations, OAuth2 token management including automatic refresh, and mutation tools for ticket CRUD operations.

Multi-service orchestration

Your prompt

/mcp-builder I need an MCP server that coordinates between our CRM (Salesforce) and support system (Zendesk). Should be able to look up a customer and see their support history in one call.

Expected outcome

Claude creates an MCP server with tools for both services and a combined lookup tool that fetches from both APIs and merges the results.

FAQ

Frequently Asked Questions

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