blast-radius is agent-read markdown (skill) from pedrohcgs/claude-code-my-workflow: Before and after changing anything shared — a function's return value, a signature, a schema, a label set, a config default, a constant, a file format — find every consumer and actually run them. Catches the change that looks purely additive but silently breaks a contract in a file you never opened. Use when editing shared code, adding a field/column/return element, renaming, changing units or defaults, or touching a pipeline that produces reported numbers..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified before it reaches your agent: the main file against the SHA-256 recorded here, the others against the git hashes of its source commit. The deterministic audit below grades the latest version, and the same checks always give the same file the same grade.
What the file says
# Know the blast radius before you change it
The dangerous change is not the risky-looking one. It is the one that **looks purely additive** — adding a returned value, a column, an option — and quietly violates a contract three files away that nobody re-read. Compilation and type checks will not catch a positional or length contract; you get either a crash far from the edit, or worse, silently wrong output.
**Rule: if you change a shared interface, run its consumers. Reading them is not running them.**
## 1. Enumerate consumers before editing
Grep for every call site, import, and downstream reference — including tests, notebooks, scripts, docs, and anything that regenerates reported results. Note which ones produce numbers that appear in a paper, dashboard, or release: those are the ones where silent breakage is most costly.
If a consumer lives in another repo, another language, or a generated artifact, write it down now; you will not remember at verification time.
…
Pin to a label to follow the author's releases, or to a sha256 for exact bytes. Either way the resolved hash is written to mdr.lock, and mdr install fetches those bytes again and checks them, so it installs them exactly or fails.
GET https://markdownregistry.com/api/v1/artifacts/art_yijbrik2nlcozscc
GET https://markdownregistry.com/api/v1/resolve?ref=pedrohcgs/claude-code-my-workflow/blast-radius
GET https://markdownregistry.com/api/v1/blob/b4c9f1693f5bda9379f120d3b45afa0636eeb259ed91bac0e50e6bf528924f3b
Your agent 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.
pedrohcgs/claude-code-my-workflow · .claude/skills/adjudicate-review/SKILL.md · Turn an incoming set of findings — from an AI reviewer, a referee report, a code review, a linter, or a second model —…
pedrohcgs/claude-code-my-workflow · .claude/skills/audit-reproducibility/SKILL.md · Enforce the replication-protocol.md rule by cross-checking numeric claims in a manuscript against the actual R / Stata…
pedrohcgs/claude-code-my-workflow · .claude/skills/capture-environment/SKILL.md · Snapshot the computational environment for a replication package — detects the analysis stack (R / Stata / Python) and…
pedrohcgs/claude-code-my-workflow · .claude/skills/challenge/SKILL.md · Stress-test a finding against the choices you did not make. Enumerates the discrete forks a competent analyst could…
pedrohcgs/claude-code-my-workflow · .claude/skills/checkpoint/SKILL.md · Save a structured state snapshot before stopping or handing off. Captures the active plan, recent decisions, file…
pedrohcgs/claude-code-my-workflow · .claude/skills/coauthor-brief/SKILL.md · Generate a co-author / collaborator handoff brief for a multi-author, multi-machine project — summarizing what changed…
pedrohcgs/claude-code-my-workflow · .claude/skills/commit/SKILL.md · Stage, commit, push, open a PR, and merge to main. Use ONLY on explicit commit intent — user says "commit", "ship it"…
pedrohcgs/claude-code-my-workflow · .claude/skills/compile-latex/SKILL.md · Compile a Beamer LaTeX slide deck with XeLaTeX (3 passes + bibtex). Use when user says "compile", "build the slides"…
pedrohcgs/claude-code-my-workflow · .claude/skills/compress-session/SKILL.md · Distill the current conversation into a structured note (decisions made, open questions, file pointers with line…
pedrohcgs/claude-code-my-workflow · .claude/skills/context-status/SKILL.md · Show current context status and session health.
Use to check how much context has been used, whether auto-compact…
pedrohcgs/claude-code-my-workflow · .claude/skills/create-lecture/SKILL.md · Create a new Beamer lecture `.tex` from source papers and materials, with notation consistency checks and the project's…
pedrohcgs/claude-code-my-workflow · .claude/skills/credible-claims/SKILL.md · Research-brief + claim-record discipline for delegated or AI-assisted research work. Use when starting any substantive…
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…
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…
j-star-films-studios/vibecode-protocol-suite · assets/.agent/skills/code-intelligence/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…
ulises-jeremias/agent-toolkit · plugins/agent-toolkit-complete/.github/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…
