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Meet Agentbriefer

Agentbriefer is a command-line tool that gives AI coding agents a consistent, project-specific operating brief. You describe how work should be approached once in agentbriefer.yaml; Agentbriefer turns that configuration into the instruction files Claude Code, AGENTS.md-compatible tools, Cursor, and GitHub Copilot already understand.

agentbriefer.yaml
        ↓
Agentbriefer renderer + installed skills
        ↓
CLAUDE.md · AGENTS.md · Cursor rules · Copilot instructions

The problem it solves​

AI agents can be productive and still behave inconsistently. One session may make a focused change; another may add dependencies, refactor unrelated code, or continue beyond the requested scope. Repeating the same expectations in every prompt is tedious, easy to forget, and difficult to share with a team.

Agentbriefer makes those expectations explicit and reviewable:

  • how much architecture the agent should introduce;
  • when dependencies require an explanation or approval;
  • how security-sensitive changes should be treated;
  • how much testing is expected;
  • how detailed explanations should be;
  • when the agent must stop and ask;
  • which focused skills apply to the project.

When Agentbriefer is useful​

  • One developer, several tools: keep Claude Code, Cursor, and Copilot aligned.
  • A shared repository: review agent policy like any other project configuration.
  • Security-sensitive work: make conservative auth, secret, permission, and validation behavior explicit.
  • A mixed-experience team: choose learning-focused or concise explanations without rewriting prompts.
  • Repeated project setup: reuse developer profiles and named skill sets.
  • Existing handwritten guidance: use sync to preserve content outside Agentbriefer's managed block.

What it is not​

Agentbriefer does not run an autonomous agent, execute prompts, create pull requests, store cloud memory, or replace your coding assistant. It prepares the repository-level context those assistants consume.

The shortest mental model 💡

Agentbriefer is a compiler for agent instructions: YAML and bundled skills go in; tool-specific Markdown and rules files come out.

Continue​

Start with Installation, follow the Quick start, or read How it works for the full data flow.