audit-context-building SKILL.md skillA
audit-context-building from trailofbits/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add trailofbits/skills/audit-context-building@git:20260828.d1f1575Pins git:20260828.d1f1575 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- trailofbits/skills
- Path
plugins/audit-context-building/skills/audit-context-building/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260828.d1f1575, committed Aug 28, 2026
- First version recorded
- Jan 14, 2026
- Size
- 3,991 bytes
- Repository stars
- 7,698
- License
- CC-BY-SA-4.0
Understand a codebase before looking for bugs in it - what each function assumes, what it guarantees, and what it depends on elsewhere. Use when starting an audit, threat model, or architecture review on unfamiliar code, and before any vulnerability-hunting pass.
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
# Audit Context Building Build understanding, not verdicts. This runs before anyone hunts for bugs, and feeds that work. ## When to Use At the start of an audit, a threat model, or an architecture review, when the code is unfamiliar. Also when an earlier pass produced findings nobody could judge, because no one had mapped out how the system fits together. ## When NOT to Use Do not name vulnerabilities, suggest fixes, write proofs-of-concept, or rate severity. Those belong to the hunting phase, which runs next and with the whole picture in hand. When the code counts on something and nothing checks it, record that plainly and move on — whether it matters is decided later. Not worth the tokens on code you already understand. ## Do not analyze in this context The analysis is long, and this context needs to survive to use it. Dispatch it: - **A codebase, or more than one function** — run `/audit-context-building:audit-context <path>`. It orients, analyzes each function in its own subagent, and writes `audit-context/DOSSIER.md` plus one file per function under `audit-context/functions/`. Only compact records return here. …
Read the whole file at its exact version.
How to install
mdr add trailofbits/skills/audit-context-building@sha256:33fa693dc6e166cfThe line at the top of this page pins the label git:20260828.d1f1575, 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.
[](https://markdownregistry.com/a/art_d4tqgnno3z7j27bp)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Jan 14, 2026 and Aug 28, 2026, about one every 75 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260828.d1f1575 latest | 2026-08-28 | d1f1575 | 3,991 B | A | view · diff |
| git:20260805.ea7c60e | 2026-08-05 | ea7c60e | 3,982 B | A | view · diff |
| git:20260213.271c095 | 2026-02-13 | 271c095 | 9,804 B | A | view · diff |
| git:20260114.695119c | 2026-01-14 | 695119c | 9,563 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (3991 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
- pass: No script tag
Source
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_d4tqgnno3z7j27bp GET https://markdownregistry.com/api/v1/resolve?ref=trailofbits/skills/audit-context-building GET https://markdownregistry.com/api/v1/blob/33fa693dc6e166cfa4919e4373cb6578c009d296234c2ae7cb3cd4e79b443765
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: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
More from trailofbits/skills
Every file in trailofbits/skills