# Trail

Trail is an infinite canvas for learning & exploring ideas, powered by LLMs.

- Humans can use the hosted browser app or connect Trail to an MCP-compatible AI agent.
- Agents can install and open Trail through the local MCP server:

```bash
claude mcp add trail -- npx -y trail-mcp
codex mcp add trail -- npx -y trail-mcp
```

- Human path: https://withtrail.app/
- About and demos: https://withtrail.app/about/
- Claude Code and Codex bridge: npx -y trail-bridge --app-url https://withtrail.app
- Browser models: use OpenRouter or an OpenAI-compatible local endpoint such as Ollama.
- Agent path: use the MCP command above from Claude Code or an MCP-compatible coding agent.
- MCP install: https://www.npmjs.com/package/trail-mcp