Show HN: GitAgent – An open standard that turns any Git repo into an AI agent

Who Should Read

Developers building AI agents on top of Git repositories, and teams thinking about how to encode agent behavior and persona in a version-controlled, auditable way.

Core Mechanics

• The pattern: three files in a Git repo define an AI agent's persistent behavior without any external configuration.
• SOUL.md: the agent's core values, personality, and behavioral constraints — who it is and how it should act.
• SKILL.md: the agent's capabilities and knowledge domains — what it knows how to do and what tools it has access to.
• AGENT.md: operational instructions — how it should handle specific situations, escalation patterns, and workflow-specific rules.
• Storing these in Git means agent behavior is version-controlled, reviewable via PRs, and co-evolves with the codebase it serves.
• This is simpler than framework-specific agent configuration and works with any agent runtime that can read the repo.

Evidence

• The author demonstrated the pattern on a real project, showing how the three files shaped agent behavior across different tasks.
• HN commenters noted this is essentially a structured version of system prompts, but the Git-native approach and the SOUL/SKILL/AGENT taxonomy add useful clarity.
• Some pointed out overlap with existing patterns like CLAUDE.md (used by Claude Code) — suggesting this is a convergent pattern in the ecosystem.
• Others raised the question of security: files like SOUL.md that define agent behavior are potential targets for prompt injection if an attacker can modify the repo.

How to Apply

• Create SOUL.md in your repo to encode the core values and constraints you want your AI agent to maintain — this prevents drift toward behaviors that seem helpful but violate your principles.
• Use SKILL.md to document what tools and APIs the agent has access to, and under what conditions it should use them — this reduces hallucinated tool calls.
• AGENT.md is the operational runbook — document edge cases, escalation paths, and workflow-specific rules the agent should follow.
• Treat PRs to these files with the same care as PRs to core application code — they define your agent's behavior and warrant review.

Terminology

Related Resources

• GitAgent Official Site
• Microsoft APM (Agent Package Manager)
• Sutskever Agent Example Repository