The builder’s field kit
Find your next freebie.
APIs, agent skills, prompts and practical guides. Search a name or the job you want to do.
- APIs
VoiceStudio
A local voice studio for cloning, designing, dubbing, dictating, transcribing and narrating on your own machine.
- Agents
Use a local AI gateway with Claude Desktop
A step-by-step desktop guide to connecting OmniRoute or FreeLLMAPI, adding a provider and testing your first Code request.
- APIs
Public APIs
A community catalogue of public APIs, with the category lists, auth flags and provider links you can study on this page.
- Prompts
OpenAI prompting guide
Official guidance for structuring instructions, adding context and getting more reliable results from GPT models.
- Prompts
OpenAI Cookbook
Practical examples for prompts, tool use, agents, structured output, evaluation and production AI workflows.
- Skills
Claude Agent Skills
Anthropic’s official public repository of reusable skills, examples and patterns for teaching an agent specialized workflows.
- Prompts
Claude prompting practices
Official Claude guidance covering clear instructions, examples, output formats, tool use and agentic systems.
- Agents
MCP server examples
Reference implementations showing how AI applications can connect to tools, services and useful data sources.
- Skills
Find Skills
A Vercel skill that searches the open skills ecosystem when you ask how to do something that might already be packaged.
- Skills
Productivity skills
Matt Pocock’s workflow skills for stress-testing a plan, handing work to another agent, teaching, and writing docs agents can follow.
- Skills · Agents · Prompts
Everything Claude Code
A Claude Code plugin that keeps agents, skills, and slash-command prompts in separate folders so you can install only the part you need.