
Mcp Builder
Guide your agent through scaffolding, wiring, and shipping a custom MCP server that exposes tools to Claude Code or Cursor.
Overview
MCP Builder is an agent skill for the Build phase that helps a solo builder create and wire a Model Context Protocol server so coding agents can call custom tools.
Install
npx skills add https://github.com/sickn33/antigravity-awesome-skills --skill mcp-builderWhat is this skill?
- End-to-end MCP server authoring workflow for agent ecosystems
- Apache-2.0 licensed skill package from antigravity-awesome-skills collection
- Targets builders extending Claude/Cursor with custom tools and resources
- Pairs with agent-first products that need first-party integrations
- Skill slug mcp-builder signals generator-style MCP scaffolding guidance
Adoption & trust: 584 installs on skills.sh; 40.1k GitHub stars; 2/3 security scanners passed (skills.sh audits).
What problem does it solve?
You have domain logic or APIs your agent should use repeatedly, but no MCP server structure or tool manifests to register them with Claude Code or Cursor.
Who is it for?
Indie builders shipping agent-native products who need first-party MCP tools beyond generic web fetch.
Skip if: Builders who only need a single REST call without persistent agent tooling, or teams forbidding custom MCP servers for compliance reasons.
When should I use this skill?
When you need to create or extend a Model Context Protocol server so your coding agent can call custom tools.
What do I get? / Deliverables
You get a scaffolded MCP server project with tool definitions your agent can iterate on and connect to local or hosted MCP clients.
- MCP server project skeleton
- Tool manifest definitions
- Client connection instructions
Recommended Skills
Journey fit
MCP servers are built during the product/agent integration phase, not as a launch or growth tactic—Build is the natural primary shelf. Agent-tooling subphase fits Model Context Protocol servers that extend what your coding agent can call at runtime.
How it compares
Skill-guided MCP authoring, not a hosted MCP marketplace or prebuilt integration server you only configure.
Common Questions / FAQ
Who is mcp-builder for?
Solo and indie developers building agent workflows who want to expose custom capabilities to Claude Code, Cursor, Codex, or other MCP-compatible clients.
When should I use mcp-builder?
During Build → agent-tooling when you are ready to package internal APIs, scripts, or data access as MCP tools for your coding agent.
Is mcp-builder safe to install?
MCP servers often need network, filesystem, and secrets access when implemented; review the Security Audits panel on this Prism page and audit generated server code before production use.
SKILL.md
READMESKILL.md - Mcp Builder
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