Advanced11 min

Building Your Own Coding Agent

Build a custom coding agent with Deep Agents: sandbox execution, project-specific skills, edit-verify loops, and ACP exposure for IDE integration.

Quick Reference

→Deep Agents + DaytonaSandbox: safe code editing and execution in isolated environments
→Built-in tools: ls, read_file, write_file, edit_file, glob, grep, execute — all you need for coding
→Skills system: load project conventions, coding standards, and architecture patterns on demand
→Edit-verify loop: agent edits code → runs tests → fixes failures → repeats until green
→ACP exposure: integrate your custom coding agent into Zed, VS Code, JetBrains, Neovim
→Memory: AGENTS.md persists project context and coding decisions across sessions

Basic Setup

Custom coding agent with sandbox and skills

The Edit-Verify Loop

The agent's core workflow is an edit-verify loop: make a change, run tests, check the result. If tests fail, read the error, fix the code, and re-run. This is the same workflow a human developer follows — the agent just does it faster.

Project-Specific Skills

skills/project-conventions/SKILL.md

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