awesome-free-llm-apis

NousResearch/

hermes-agent

▲ 3.5k/wk

The agent that grows with you

affaan-m/

ECC

▲ 2.9k/wk

The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.

asgeirtj/

system_prompts_leaks

▲ 1.1k/wk

Extracted system prompts from Anthropic - Claude Fable 5, Opus 5, Claude Design, Claude Code. OpenAI - ChatGPT GPT-5.6-Sol, Codex. Google - Gemini 3.5 Flash, 3.1 Pro, Antigravity. xAI - Grok, Cursor, Copilot, VS Code, Perplexity, and more. Updated regularly.

langchain-ai/

langchain

▲ 595/wk

The agent engineering platform.

Graphify-Labs/

graphify

▲ 4.6k/wk

Turn any codebase, with its docs, SQL schemas, configs, and PDFs, into a queryable knowledge graph. A /graphify skill for Claude Code, Cursor, Codex, and Gemini CLI: local deterministic AST parsing, every edge explained, no vector store.

JuliusBrussee/

caveman

▲ 1.8k/wk

🪨 why use many token when few token do trick — Claude Code skill that cuts 65% of tokens by talking like caveman