CODINGAGENTS.md
The open directory for everything coding agents.
agents.md guides agents. codingagents.md helps humans pick the right one.
agents.md guides agents. codingagents.md helps humans pick the right one.
AGENTS WE COVER
23 Coding Agents AdaL CLI · Claude Code · Codex · Cursor · Copilot · Gemini CLI · Antigravity · Windsurf · Devin · Amp · Cline · OpenCode · Pi · Hermes · OpenClaw · Droid · Kiro · Goose · Kilo · Qoder · Trae · Freebuff · Roo
5+ Config Formats AGENTS.md · CLAUDE.md · .cursorrules · copilot-instructions.md · SKILL.md
3 Protocols MCP (Model Context Protocol) · ACP (Agent Client Protocol) · @skills (AtSkills)
8+ Agent SDKs AdaL SDK · LangGraph · OpenAI Agents SDK · CrewAI · Microsoft Agent Framework · Pydantic AI · Smolagents · Strands Agents
Guides Getting started, choosing an agent, multi-agent setups
Where to find skills
Section titled “Where to find skills”Agents need procedures, not just tools. A skill is a SKILL.md file that teaches an agent how your team does a thing — and most agents have no registry of their own, so you bring your own.
@skills is the universal standard and hub for agents to manage skills. It works by path rather than by install, so any agent that reads files is already a client.
Browse 60,000+ skills atskills.one — the open catalogue, free to read and copy
What is @skills? The protocol explained, with a 45-second video
How the protocol works Reference, save, or auto-trigger — and how it compares to MCP
Add it to your agent Level 0 needs one file. Level 1 splices one string.
Models powering the agents
Section titled “Models powering the agents”The current frontier for coding, newest first. Full rankings and benchmarks →
| Model | Provider | Released | Context | Price /1M in-out | Best For |
|---|---|---|---|---|---|
| Gemini 3.7 Flash | 2026-08-13 | 1M | $1.50 / $7.50 | Coding and agentic work at Flash speed | |
| Claude Opus 5 | Anthropic | 2026-07-24 | 1M | $5 / $25 | Complex agentic coding |
| GPT-5.6 Sol | OpenAI | 2026-07-09 | 922K | $5 / $30 | Frontier, hardest professional work |
| GPT-5.6 Terra | OpenAI | 2026-07-09 | 922K | $2.50 / $15 | Balanced everyday work |
| GPT-5.6 Luna | OpenAI | 2026-07-09 | 922K | $1 / $6 | High-volume, cost-sensitive |
| Claude Sonnet 5 | Anthropic | 2026-06-30 | 1M | $3 / $15 | Most capable Sonnet — coding and agents |
| Claude Fable 5 | Anthropic | 2026 | 1M | $10 / $50 | Frontier knowledge work |
| Kimi K3 | Moonshot | 2026 | 917K | $3 / $15 | Frontier coding, deep reasoning |
| GLM-5.2 | Z.ai | 2026 | 1M | $1.40 / $4.40 | Long-horizon coding |
| Grok 4.6 | xAI | 2026 | 500K | $2 / $6 | Agentic coding |
| MiniMax M3 | MiniMax | 2026 | 1M | $0.30 / $1.20 | Browser use, cheap agentic work |
| DeepSeek V4 Pro | DeepSeek | 2026 | 616K | $0.44 / $0.87 | Frontier reasoning on a budget |
Stay updated
Section titled “Stay updated”Get weekly updates on the coding agent ecosystem — new agents, format changes, benchmarks.