anvien-impact-analysis SKILL.md skillA
anvien-impact-analysis from tamnguyendinh/anvien is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add tamnguyendinh/anvien/anvien-impact-analysis@git:20260529.973b8f5Pins git:20260529.973b8f5 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- tamnguyendinh/anvien
- Path
anvien-claude-plugin/skills/anvien-impact-analysis/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260529.973b8f5, committed May 29, 2026
- Size
- 2,824 bytes
- Repository stars
- 12
- License
- MIT
Use when the user wants to know what will break if they change something, or needs safety analysis before editing code. Examples: "Is it safe to change X?", "What depends on this?", "What will break?".
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
# Impact Analysis with Anvien
## When to Use
- "Is it safe to change this function?"
- "What will break if I modify X?"
- "Show me the blast radius"
- "Who uses this code?"
- Before making non-trivial code changes
- Before committing — to understand what your changes affect
## Workflow
```
1. impact({target: "X", direction: "upstream"}) → What depends on this
2. READ anvien://repo/{name}/processes → Check affected execution flows
3. detect_changes() → Map current git changes to affected flows
4. Assess risk and report to user
```
> If "Index is stale" → run `anvien analyze` in terminal.
## Checklist
```
- [ ] impact({target, direction: "upstream"}) to find dependents
- [ ] Review d=1 items first (these WILL BREAK)
- [ ] Check high-confidence (>0.8) dependencies
- [ ] READ processes to check affected execution flows
- [ ] detect_changes() for pre-commit check
- [ ] Assess risk level and report to user
```
## Understanding Output
| Depth | Risk Level | Meaning |
| ----- | ---------------- | ------------------------ |
| d=1 | **WILL BREAK** | Direct callers/importers |
…Read the whole file at its exact version.
How to install
mdr add tamnguyendinh/anvien/anvien-impact-analysis@sha256:d4cae0ac3d914c9eThe line at the top of this page pins the label git:20260529.973b8f5, 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_eacmoijxl42u4bdy)
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Versions
The registry has recorded 1 version of this file, committed on May 29, 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 (2824 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
tamnguyendinh/anvien · 12 stars · license MIT · pushed 2026-10-25 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_eacmoijxl42u4bdy GET https://markdownregistry.com/api/v1/resolve?ref=tamnguyendinh/anvien/anvien-impact-analysis GET https://markdownregistry.com/api/v1/blob/d4cae0ac3d914c9ea2fdfcc2d202fc310baaba3f7e22e62811b19e58a5c8bf31
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.