Repo Agent Brief Skill

Use @builtbyecho/repo-agent-brief to orient an agent before it edits or reviews a repository. It finds high-signal context files, infers stack/commands, builds a compact repo map, and flags obvious secret/risky-instruction patterns.

Default workflow

From the repository root:

npx @builtbyecho/repo-agent-brief . > AGENT_BRIEF.md
sed -n '1,220p' AGENT_BRIEF.md

For in-progress branches:

npx @builtbyecho/repo-agent-brief . --diff origin/main > AGENT_HANDOFF.md
sed -n '1,260p' AGENT_HANDOFF.md

For machine-readable automation:

npx @builtbyecho/repo-agent-brief . --format json > agent-brief.json

For durable handoffs:

npx @builtbyecho/repo-agent-brief . --diff HEAD --bundle
sed -n '1,220p' .agent-brief/brief.md
sed -n '1,160p' .agent-brief/verification.md

When to use

• First pass in an unfamiliar repo.
• Before delegating to a coding agent.
• PR/branch handoff where changed files matter.
• Safety preflight before touching CI, migrations, deploy scripts, auth, or config.

Safety

• This is not a full secret scanner. Use Gitleaks/TruffleHog for full audits.
• If high-risk patterns are found, inspect before proceeding.
• Use --fail-on-high-risk in CI or strict agent workflows.
• Generated briefs may include snippets from repo context files; avoid posting publicly without review.

Useful commands

npx @builtbyecho/repo-agent-brief .
npx @builtbyecho/repo-agent-brief . --diff HEAD
npx @builtbyecho/repo-agent-brief . --diff HEAD --bundle
npx @builtbyecho/repo-agent-brief . --diff origin/main --fail-on-high-risk
npx @builtbyecho/repo-agent-brief . --no-snippets