blast-radius

blast-radius is a skill for Claude Code from shipshitdev/skills. It costs 40 tokens per session (826 once invoked), scanned A, original, no licence file.

A code-change analysis that identifies other parts of a project a small change might affect, then checks those risks against the actual code.

In plain words
What is it for?
Use it before or after a small diff when you want to know what could break and evidence from the code.
Why use it?
It reduces the chance of overlooking an indirect break caused by a change that looks local.

Skill for Claude Code

Written for Claude Code: when-to-use in frontmatter.

Good fit Use it before or after a small diff when you want to know what could break and evidence from the code.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/shipshitdev/skills/blast-radius
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add shipshitdev/skills --skill blast-radius
Clone the repo
git clone --depth 1 https://github.com/shipshitdev/skills

Made for: Claude Code.

Its marketplace also offers this one on its own, as the plugin blast-radius — /plugin install blast-radius after adding the marketplace above.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for blast-radius

README.md
[![agentmods](https://agentmods.dev/badge/skills/shipshitdev/skills/blast-radius/github.svg)](https://agentmods.dev/skills/shipshitdev/skills/blast-radius)
Your own site
<a href="https://agentmods.dev/skills/shipshitdev/skills/blast-radius"><img src="https://agentmods.dev/badge/skills/shipshitdev/skills/blast-radius/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for blast-radius

Your own site · 80×15
<a href="https://agentmods.dev/skills/shipshitdev/skills/blast-radius"><img src="https://agentmods.dev/badge/skills/shipshitdev/skills/blast-radius.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 826 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00040 $0.00826
Opus 5.5 $0.00016 $0.00330
Sonnet 5.5 $0.00008 $0.00165
Haiku 4.5 $0.00004 $0.00083

Measured 9d ago against content hash 8cc6bb808f8f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

blast-radius scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/blast-radius/SKILL.md · 102 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago Changed 8cc6bb808f8f
  2. 10d ago Changed eb93b5b5b708
  3. 11d ago Changed 335a0f88dd0e
  4. 13d ago First seen · 102 lines · 40 tokens per session scan A 0a5c420a5a42

Subscribe to this mod's changes

blast-radius is a skill published in the GitHub repository shipshitdev/skills (38 stars, last pushed 6d ago), with no licence file. It adds 40 tokens to every session and 826 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-04.

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