AGENTS.mdB

AGENTS.md from trailofbits/skills is an AGENTS.md file: the standing instructions coding agents read in that repo.

Install it, pinned
mdr add trailofbits/skills/AGENTS.md@git:20260916.123037e

Pins git:20260916.123037e in mdr.lock. Pin the fingerprint instead.

Audit grade
B, 13 of 14 checks passed
Kind
AGENTS.md file
Repository
trailofbits/skills
Path
AGENTS.md
Versions recorded
5
Latest version
git:20260916.123037e, committed Sep 16, 2026
First version recorded
Aug 24, 2026
Size
20,606 bytes
Repository stars
7,698
License
CC-BY-SA-4.0

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Contributing Skills

## Resources

**Official Anthropic documentation (always check these first):**

- [Claude Code Plugins](https://code.claude.com/docs/en/plugins)
- [Agent Skills](https://code.claude.com/docs/en/skills)
- [Best Practices](https://code.claude.com/docs/en/skills#best-practices)
- [Skill Authoring Best Practices](https://platform.claude.com/docs/en/agents-and-tools/agent-skills/best-practices) — progressive disclosure, degrees of freedom, workflow checklists
- [The Complete Guide to Building Skills](https://resources.anthropic.com/hubfs/The-Complete-Guide-to-Building-Skill-for-Claude.pdf) ([text](https://gist.github.com/liskl/269ae33835ab4bfdd6140f0beb909873)) — evaluation-driven development, iterative testing

**Reference skills** - learn by example at different complexity levels:

| Complexity | Skill | What It Demonstrates |
|------------|-------|---------------------|
| **Basic** | [git-cleanup](plugins/git-cleanup/) | Single self-contained SKILL.md, `allowed-tools` scoping |
| **Intermediate** | [constant-time-analysis](plugins/constant-time-analysis/) | Python package, references/, language-specific docs |
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add trailofbits/skills/AGENTS.md@sha256:78f5a80f6f25b7ea

The line at the top of this page pins the label git:20260916.123037e, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_smqvw2x26an6bo56.svg)](https://markdownregistry.com/a/art_smqvw2x26an6bo56)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 5 versions of this file, between Aug 24, 2026 and Sep 16, 2026, about one every 6 days.

versioncommittedcommitsizeaudit
git:20260916.123037e latest2026-09-16 123037e 20,606 BB view · diff
git:20260915.a6d1b232026-09-15 a6d1b23 20,636 BB view · diff
git:20260914.979a3f92026-09-14 979a3f9 19,876 BB view · diff
git:20260826.4b1b74b2026-08-26 4b1b74b 19,711 BB view · diff
git:20260824.9e7054e2026-08-24 9e7054e 19,082 BB view

Audit of the latest version

B  13 of 14 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • fail: No script tag (matched: <script)
  • pass: Size between 200 bytes and 200 KB (20606 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address

Starting a new one? Use a template for AGENTS.md on mdpantry, which passes every one of these checks and says what to change in it.

Source

GitHub

trailofbits/skills · 7,698 stars · license CC-BY-SA-4.0 · pushed 2026-10-22 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_smqvw2x26an6bo56
GET https://markdownregistry.com/api/v1/resolve?ref=trailofbits/skills/AGENTS.md
GET https://markdownregistry.com/api/v1/blob/78f5a80f6f25b7eafa632ab0e31354620e0efdfca287202a99f4a610e23dead6

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: how to write a good AGENTS.md · AGENTS.md vs CLAUDE.md · which agent file does what.

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