blast-radius SKILL.md skillA

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

Install it, pinned
mdr add korallis/agent-stack/blast-radius@git:20260930.ce1c74b

Pins git:20260930.ce1c74b in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
korallis/agent-stack
Path
skills/blast-radius/SKILL.md
Versions recorded
1
Latest version
git:20260930.ce1c74b, committed Sep 30, 2026
Size
3,368 bytes
Repository stars
35
License
Apache-2.0

Before review sign-off and before merge, find what a diff could break OUTSIDE the edited files, and prove the one fact that makes it safe by running real code or a query. Use for "what could this break", for any PR touching shared code, SQL, migrations, env or jobs, and for small diffs you don't trust. The result goes in the PR.

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

Listing callers is not the job; `rg` does that in a second. The job is the breakage a search won't show you.

## When

- The reviewer runs it before signing off a PR that touches shared code, SQL or queries, migrations, env or config,
  background jobs, a public API or a data format.
- The integrator checks that the PR carries it before the merge gate. For risky-tier PRs it is required.

## Steps

1. **Read the change.** The diff, the symbols it adds, changes and deletes, and what the code now does differently,
   including what the diff doesn't spell out.
2. **Find the one fact it is safe because of.** Most risky-looking changes are safe because of one fact, like "this
   migration only adds a nullable column" or "this helper is only called from the admin page". If that fact holds, most
   risks go away at once. Spend your time here.
3. **Look where search stops.** A database column read by another service or a report. JSON that a client or a stored
   job parses. An env var another deploy target sets differently. A cron job or queue consumer that runs later. A
   library's pinned version or local patch. Code three calls downstream.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add korallis/agent-stack/blast-radius@sha256:6a741b8e09c478ac

The line at the top of this page pins the label git:20260930.ce1c74b, 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_7o4zfies6ix4xnn6.svg)](https://markdownregistry.com/a/art_7o4zfies6ix4xnn6)

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

Versions

The registry has recorded 1 version of this file, committed on Sep 30, 2026.

versioncommittedcommitsizeaudit
git:20260930.ce1c74b latest2026-09-30 ce1c74b 3,368 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 (3368 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

korallis/agent-stack · 35 stars · license Apache-2.0 · pushed 2026-10-05 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_7o4zfies6ix4xnn6
GET https://markdownregistry.com/api/v1/resolve?ref=korallis/agent-stack/blast-radius
GET https://markdownregistry.com/api/v1/blob/6a741b8e09c478ac48752cc5bf5b9505a01deda0f15b98fdbd3308a1122358ec

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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