This file is byte-identical to the first copy the registry indexed, one of 4 indexed copies. Same content hash, so the same checks give both the same grade.
blast-radius from cursor/plugins is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
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', 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.
…
The line at the top of this page pins the label git:20261016.182f2ce, 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.
GET https://markdownregistry.com/api/v1/artifacts/art_pzmwf5nocyjci2sz
GET https://markdownregistry.com/api/v1/resolve?ref=cursor/plugins/blast-radius
GET https://markdownregistry.com/api/v1/blob/2e10745b97f5862323dcda3b29ca60d56b5c3c98e37020085d26b48efbe0a436
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.
cursor/plugins · advisor/skills/advisor/SKILL.md · Advisor mode. Consult a stronger (or different) model at key checkpoints: before major decisions, when stuck on an…
cursor/plugins · agent-compatibility/skills/check-agent-compatibility/SKILL.md · Run the full repository compatibility pass: scanner score, startup path, validation loop, and docs reliability.
cursor/plugins · cli-for-agent/skills/cli-for-agents/SKILL.md · Designs or reviews CLIs so coding agents can run them reliably: non-interactive flags, layered --help with examples…
cursor/plugins · create-plugin/skills/create-plugin-scaffold/SKILL.md · Create a new Cursor plugin scaffold with a valid manifest, component directories, and marketplace wiring. Use when…
cursor/plugins · create-plugin/skills/review-plugin-submission/SKILL.md · Audit a Cursor plugin for marketplace readiness. Use when validating manifests, component metadata, discovery paths…
cursor/plugins · cursor-sdk/skills/cursor-sdk/SKILL.md · Guide users building apps, scripts, CI pipelines, or automations on top of the Cursor TypeScript SDK (`@cursor/sdk`)…
cursor/plugins · cursor-team-kit/skills/control-cli/SKILL.md · Build or adapt a local harness to drive, inspect, and profile an interactive CLI or TUI without external services. Use…
cursor/plugins · cursor-team-kit/skills/control-ui/SKILL.md · Build or adapt a local browser/CDP harness to drive and inspect a web, IDE, or Electron UI. Use for local UI…
cursor/plugins · pstack/skills/blast-radius/SKILL.md · Find what a change could break somewhere else before it ships, beyond the diff, and prove the one fact it's safe…
michael-denyer/pstack-claude · plugins/pstack/skills/blast-radius/SKILL.md · Find what a change could break somewhere else before it ships, beyond the diff, and prove the one fact it's safe…
backnotprop/pstack · skills/blast-radius/SKILL.md · Find what a change could break somewhere else before it ships, beyond the diff, and prove the one fact it's safe…
pedrohcgs/claude-code-my-workflow · .claude/skills/blast-radius/SKILL.md · Before and after changing anything shared — a function's return value, a signature, a schema, a label set, a config…
pixeltable/pixeltable · .claude/skills/blast-radius/SKILL.md · Find what a change could break somewhere else before it ships, beyond the diff, and prove the one fact it's safe…
athola/claude-night-market · plugins/pensive/skills/blast-radius/SKILL.md · Analyzes code change impact with risk scoring and affected-node mapping. Use before merging to understand what a change…
parcha-ai/parcha-skills · blast-radius/skills/blast-radius/SKILL.md · Find what a change could break somewhere else before it ships, beyond the diff, and prove the one fact it's safe…
outlinedriven/outline-driven-development · .devin/skills/blast-radius/SKILL.md · Use when asked to determine what a change could break before it ships. Not for remote, credential, publish, deploy, or…
