Build Extension Builder | Agent Skills Atlas

About this skill

Build Claude cognitive extensions with quality methodology. Composes with plugin-dev and agent-sdk-dev. Use when: creating skills/hooks/agents/commands/MCP/plugins, need quality validation, building for the 1337 marketplace.

Quick start

Copy the install prompt. Use the green button above this README.
Send it to your agent. Paste it into your coding agent’s chat and send.
Review the setup. Your agent checks the skill’s instructions, requirements, and installation scope.

Installation guide →

Review, license & listing details

Review the source before using this skill

This is an imported listing. We haven’t certified its safety, license, or compatibility. Skills may include executable scripts.

Automated security scan: Partial

Only SKILL.md was scanned. Supporting files and scripts were not checked. No safety grade has been assigned.

0 potential findings · Scanned 11/4/2026 · Scanner 0.2.1

Content SHA-256: 708cb31e3f23f76f25eefa03cfdea7e330a457d1552d33e611fcccd45dc113f6

About scan coverage and limitations

Original listing metadata

Original name

build-extension-builder

Original description

About this listing

Category: Developer tools
Reported license: MIT
Listing language (estimated): English
Review status: Not individually reviewed
Agent compatibility: Atlas installation supports Claude Code, Codex, and Cursor. Skill-specific dependencies and features are checked during setup.