API Discovery

by rand

API Discovery is an AI Engineering skill for Claude Code, published by rand in cc-polymath.

175 stars12 forkson rand/cc-polymathAdded 2026/09/07+29% in starsRepository updated 2026/02/28

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aiclaude-codeskills

Install in seconds

Install API Discovery

Copy API Discovery into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/rand/cc-polymath/tree/main/skills/discover-api ~/.claude/skills/discover-api

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/rand/cc-polymath.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: skills/discover-api/SKILL.md in rand/cc-polymath
Installs to: ~/.claude/skills/discover-api
Collection: One of 25 skills cataloged from this repository
Category: AI Engineering — 3475 skills

What API Discovery does

API Discovery automatically routes backend API work to the right design and security skills. Use it when building REST or GraphQL APIs, authentication, authorization, rate limiting, versioning, or error handling.

API Discovery is cataloged under AI Engineering on DirSkills. API Discovery comes from a repository tagged ai, claude-code and skills.

Documentation

README

Excerpt

API Skills Discovery

Provides automatic access to comprehensive API design, authentication, and implementation skills.

When This Skill Activates

This skill auto-activates when you're working with:

REST API design and implementation
GraphQL schema design
API authentication (JWT, OAuth 2.0, API keys, sessions)
API authorization (RBAC, ABAC, permissions)
Rate limiting and throttling
API versioning strategies
Error handling and validation
HTTP methods, status codes, endpoints

Available Skills

Quick Reference

The API category contains 8 specialized skills:

This is the opening of the README. Read the full README on GitHub.

Frequently asked about API Discovery

What else does rand publish alongside API Discovery?
API Discovery is one of 25 skills that DirSkills catalogs from rand/cc-polymath, the repository it ships in. Its siblings there include Agentic Workflow Discovery, Anti-Slop and CICD Discovery. Each one is a separate skill with its own page in this directory, installs the same way API Discovery does, and is maintained by rand in that same repository. The rest of the collection is listed on the rand/cc-polymath page.
How does API Discovery compare to other AI Engineering skills?
API Discovery ranks #3172 by stars among the 3475 AI Engineering skills in this catalog. The most-starred ones next to it are Architecture Decision Records, AI-First Engineering and Agentic OS. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of API Discovery against them. Open each page to compare what they document and how they install.