✦ 5 agents · checked against official docs Oct 16, 2026
Every AI coding agent, side by side
Where each agent keeps its MCP config, which instruction files it reads, and how many SaaS tools we have verified in it. Pick one to see setup steps and the tools that work best.
| Agent | MCP config | Rules files | Skills | Used by* | Tools verified |
|---|---|---|---|---|---|
| C Claude Code | .mcp.json (project, shared)~/.claude.json (user / local scope) |
CLAUDE.md.claude/rules/*.md |
.claude/skills/, ~/.claude/skills/ | 65.5% | 93 / 95 |
| X OpenAI Codex | ~/.codex/config.toml (user).codex/config.toml (project, trusted projects only) |
AGENTS.md |
.codex/skills/ | 29.5% | In progress |
| ▲ Cursor | .cursor/mcp.json (project)~/.cursor/mcp.json (global) |
.cursor/rules/*.mdcAGENTS.md.cursorrules (legacy) |
.cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/ | 25.5% | In progress |
| G GitHub Copilot | .vscode/mcp.json (workspace)User-profile mcp.json (MCP: Open User Configuration) |
.github/copilot-instructions.md.github/instructions/*.instructions.mdAGENTS.md |
— | 58.7% | In progress |
| A Google Antigravity | ~/.gemini/config/mcp_config.json (global).agents/mcp_config.json (workspace) |
GEMINI.mdAGENTS.md |
— | 16% | In progress |
*Share of developers who used it, Stack Overflow Developer Survey 2026. Config paths from each vendor’s docs; see each agent page for sources. How we rate
⚙️
MCP config generator
Pick a server and your agents. Get the exact JSON, TOML or CLI command for each one, with the right keys.
🔁
Rules-file converter
Write your project rules once. Get AGENTS.md, CLAUDE.md, a Cursor .mdc rule and copilot-instructions.md.