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Agents Md

SentryOfficialPublished by Sentry

  • Skill
  • Content generator
  • Software development
  • Apache-2.0
  • No issues found

From the author

Creates and maintains concise AGENTS.md and CLAUDE.md project instruction files. Use when asked to create AGENTS.md, update AGENTS.md, maintain agent docs, set up CLAUDE.md, document repository agent conventions, or keep coding-agent instructions minimal and reference-backed.
— the description by Sentry

AutoGineer summary

Written by AutoGineer from the skill’s own files, not by the author

This skill provides a structured approach to creating and maintaining AGENTS.md and CLAUDE.md files. It focuses on keeping agent instructions minimal, actionable, and reference-backed to ensure coding agents operate efficiently within a repository. By prioritizing existing documentation and using standardized tables for commands and references, it prevents instruction bloat and ensures consistency across project subdirectories.

What it does

  • Generates concise AGENTS.md files for repository-wide agent configuration.
  • Creates symlinks for CLAUDE.md to maintain a single source of truth.
  • Structures agent instructions using tables for commands and external references.
  • Enforces a strict limit of 100 lines to ensure instructions remain readable.
  • Promotes referencing existing project documentation instead of duplicating content.
  • Standardizes commit attribution requirements for AI-generated code.

When to use it

  • When setting up a new repository that requires specific instructions for coding agents.
  • When existing agent instructions have become bloated or outdated.
  • When you need to define project-specific commands for testing, linting, or building.
  • When you want to ensure agents follow specific repository conventions or security policies.

Advantages

  • Reduces agent hallucination by providing clear, file-scoped command references.
  • Prevents instruction drift by using symlinks for multi-agent compatibility.
  • Improves agent performance by keeping context windows focused on essential rules.
  • Maintains a clean repository structure by avoiding redundant documentation.

Usage examples

“Create an AGENTS.md file for this project.”
The agent inspects the repository structure, identifies the package manager and key commands, and generates a concise AGENTS.md file with tables for commands and references.
“Update our AGENTS.md to include the new linting command.”
The agent updates the existing commands table in AGENTS.md with the specific linting command while maintaining the established formatting and line limits.

Install

  1. Download the skill as a ZIP:

    https://mp-staging.autogineer.com/agent-skills/getsentry/agents-md/download
  2. Unzip it into the cross-client skills folder of your project:

    mkdir -p .agents/skills && unzip agents-md.zip -d .agents/skills

Documentation by Sentry

Maintaining AGENTS.md

Goal: concise, actionable agent instructions. Target under 60 lines; never exceed 100.

Workflow

  1. Inspect before writing:

    • package manager: lock files and manifests

    • commands: package.json, Makefile, task runners, CI workflows

    • docs/specs/policies: README.md, CONTRIBUTING.md, docs/, specs/, policies/, SECURITY.md, .github/

    • conventions: current code patterns, test layout, generated files, legacy areas to avoid

  2. Choose scope:

    • root AGENTS.md: repo-wide defaults

    • nested AGENTS.md: only when a subtree has different commands or rules

    • closest instruction file wins; keep narrower files shorter than root files

  3. Write the smallest useful file.

  4. Verify exact paths and commands exist.

File Setup

  • Create AGENTS.md at the repository root.

  • If a Claude-compatible entrypoint is required, symlink CLAUDE.md to AGENTS.md.

  • Do not maintain divergent AGENTS.md and CLAUDE.md copies.

Default Sections

Use only sections that add non-obvious value.

# Agent Instructions

## Package Manager
- Use **pnpm**: `pnpm install`

## Commands
| Task | Command |
|------|---------|
| Test file | `pnpm vitest run path/to/file.test.ts` |
| Lint file | `pnpm eslint path/to/file.ts` |

## External References
| Need | File |
|------|------|
| Setup | `CONTRIBUTING.md` |
| Architecture | `docs/architecture.md` |
| Security policy | `SECURITY.md` |

## Key Conventions
- Generated files: update with `pnpm generate`; do not edit by hand.

## Commit Attribution
AI commits MUST include:
```
Co-Authored-By: (the agent's name and attribution byline)
```

Writing Rules

  • Use headings, bullets, and tables; avoid paragraphs.

  • Use repo-relative paths; avoid vague references like "see docs".

  • Reference existing docs/specs/policies instead of copying them.

  • List exact external files for setup, architecture, API specs, security, release, and policy docs when they exist.

  • Prefer file-scoped test/lint/typecheck commands; include full builds only when no narrower command exists.

  • Put commands in tables when there is more than one.

  • Keep one rule per bullet.

  • Keep rationale out unless it prevents a likely mistake.

  • Do not restate linter, formatter, or typechecker config.

  • Do not list installed skills or plugins.

  • Do not include generic quality slogans.

External Reference Rules

Good:

## External References
| Need | File |
|------|------|
| API contract | `docs/api.md` |
| Release process | `docs/releasing.md` |

Anti-Patterns

  • welcome text, intros, conclusions, or pleasantries

  • long prose explaining why instructions matter

  • duplicated content from README.md, CONTRIBUTING.md, or policy docs

  • project-wide commands when file-scoped commands are available

  • nested AGENTS.md files that repeat root instructions

Files

LICENSE

                                 Apache License
                           Version 2.0, January 2004
                        http://www.apache.org/licenses/

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   END OF TERMS AND CONDITIONS

   Copyright 2025 Functional Software, Inc. dba Sentry

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.

Requirements and compatibility

Works with: Claude Code, Claude apps, OpenAI Codex, GitHub Copilot, Cursor, Gemini CLI, Kiro, OpenCode, Goose, Amp, Roo Code, JetBrains Junie, Factory Droid, Devin (ex-Windsurf), Mistral Vibe, OpenHands, Letta

“Works with” means the tool reads the open Agent Skills format; a skill written for one tool may use features others lack.

Needs: Needs Node.js

Security

No issues found by our static scan· No issues found

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Attribution and licence

Published by
Sentry
Publisher
Sentry (Official)
Source
getsentry/skills · skills/agents-md · commit e94f222
Licence
Apache License 2.0 (redistribution allowed)
  • LICENSE (added by AutoGineer from LICENSE)
  • ATTRIBUTION.md (written by AutoGineer)
Synced

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Download ZIP

The ZIP holds the skill’s files, its licence files and an ATTRIBUTION.md. Download agents-md.zip