blast-radius SKILL.md skillA

blast-radius from jeongjaesoon/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add jeongjaesoon/agent-skills/blast-radius@git:20261017.8ef3dac

Pins git:20261017.8ef3dac in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
jeongjaesoon/agent-skills
Path
skills/blast-radius/SKILL.md
Versions recorded
5
Latest version
git:20261017.8ef3dac, committed Oct 17, 2026
First version recorded
Sep 23, 2026
Size
3,840 bytes
Repository stars
3
License
MIT

Find what a change could break somewhere else before it ships, beyond the diff, and prove the one fact it's safe because of by running real code instead of writing it up. Use for 'blast radius of X', 'what could this break', "이거 바꾸면 뭐가 깨져", "영향 범위 봐줘", or reviewing a small diff you don't trust.

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

# Blast radius

Find what a change breaks somewhere else, before it ships. Use for "blast radius of X", "what could this break", or reviewing a small diff you don't trust yet.

Companion to `how` and `why`. `how` tells you what the code does. `why` tells you why it's shaped that way. Blast radius tells you what it breaks somewhere else.

Listing the callers is not the job. The agent can grep those in a second. The job is the breakage grep won't show you.

## Don't trust your own writeup

A blast-radius writeup that sounds right is worthless. It reads as convincing whether or not it's true. So don't hand back the writeup. Find the one or two facts the whole thing depends on and prove them by running code.

### How sure are you

For each fact the change's safety depends on, get it as far down this list as is cheap, and say where it stopped.

1. You said so. Worthless on its own.
2. You pointed at the line. A real `file:line`, or the library's own source.
3. You showed the bad case can't happen. You walked the failure step by step and it doesn't reach.
4. You ran it. A script or test that calls the real code and fails loud if you're wrong.
5. You reproduced it in the running app.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add jeongjaesoon/agent-skills/blast-radius@sha256:8d423355da922752

The line at the top of this page pins the label git:20261017.8ef3dac, 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_73pioot2txh4z6qr.svg)](https://markdownregistry.com/a/art_73pioot2txh4z6qr)

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

Versions

The registry has recorded 5 versions of this file, between Sep 23, 2026 and Oct 17, 2026, about one every 6 days.

versioncommittedcommitsizeaudit
git:20261017.8ef3dac latest2026-10-17 8ef3dac 3,840 BA view · diff
git:20260925.e15f2cb2026-09-25 e15f2cb 3,898 BA view · diff
git:20260924.ca7e47c2026-09-24 ca7e47c 3,836 BA view · diff
git:20260924.c957fda2026-09-24 c957fda 3,695 BA view · diff
git:20260923.dc614b02026-09-23 dc614b0 3,817 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (3840 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

GitHub

jeongjaesoon/agent-skills · 3 stars · license MIT · pushed 2026-11-04 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_73pioot2txh4z6qr
GET https://markdownregistry.com/api/v1/resolve?ref=jeongjaesoon/agent-skills/blast-radius
GET https://markdownregistry.com/api/v1/blob/8d423355da92275246739caac2423858c919d1c54bff122b9328708525b94fa5

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.

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