beyond-the-sink SKILL.md skillA
beyond-the-sink from annatchijova/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add annatchijova/skills/beyond-the-sink@git:20260821.38a2b1dPins git:20260821.38a2b1d in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- annatchijova/skills
- Path
beyond-the-sink/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260821.38a2b1d, committed Aug 21, 2026
- Size
- 6,667 bytes
- Repository stars
- 9
- License
- a license file GitHub does not identify
Look past the obvious layer of an investigation — past sink-grep keyword lists, past the exhausted question family, past the single implementation where a bug class was first found. Use whenever a hunt is anchored on dangerous-function greps (eval, subprocess, open), when the scanner's output is being treated as the map, when a confirmed bug could exist in sibling implementations or languages, when second opinions or other models hand over leads, or when the user says "no obvious vulns…
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
# Beyond the Sink Scanner-shaped searches find scanner-shaped bugs. If the search is a grep for dangerous functions, every auditor before you ran the same grep — the bugs that survive are not there. Looking further is not a vague exhortation; it is three concrete moves: change what you search *for*, change the *question family*, and change the *implementation*. Composes with the library: - **attack-surface-triage** — the inventory this skill searches beyond - **invariant-hunting** — the question family to pivot into - **forensic-persistence** — the discipline that decides when to pivot - **audit-before-patch** — the verification every borrowed lead passes through --- ## Part 1 — Search for resolution, not for sinks A dangerous function is a *place*. What matters is the *path* that reaches it carrying attacker-influenced authority. Instead of grepping for sinks: ``` subprocess requests open eval ``` grep for the machinery that decides *what gets resolved, dispatched, and trusted*: ``` resolve lookup dispatch invoke registry identity principal owner tenant scope namespace permission authorize allowed capability approve claim grant token session ``` …
Read the whole file at its exact version.
How to install
mdr add annatchijova/skills/beyond-the-sink@sha256:b34753bf700588ceThe line at the top of this page pins the label git:20260821.38a2b1d, 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_ndsecbwwhmycba6g)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Aug 21, 2026.
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 (6667 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
annatchijova/skills · 9 stars · license a license file GitHub does not identify · pushed 2026-11-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ndsecbwwhmycba6g GET https://markdownregistry.com/api/v1/resolve?ref=annatchijova/skills/beyond-the-sink GET https://markdownregistry.com/api/v1/blob/b34753bf700588ce52cd62f487cfeaebc0668b2ec452b31233b558bad113e246
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.