blast-radius

blast-radius is a skill for Codex from anotherben/claude-harness. It costs 80 tokens per session (9,328 once invoked), scanned A, original, no licence file.

A project-based analysis of the downstream effects of a code change, pull request, file, symbol, or bug fix. It traces related callers, tests, routes, SQL, configuration, security boundaries, integrations, and similar bugs.

In plain words
What is it for?
Use it to assess the impact of code changes and investigate dependencies across application code, tests, databases, configuration, authentication, and external services.
Why use it?
It helps reveal what else may be affected before code is edited, reviewed, committed, or merged. This reduces the chance of missing dependent behaviour.

Skill for Codex

Written for Codex: agents/openai.yaml present.

Good fit Use it to assess the impact of code changes and investigate dependencies across application code, tests, databases, configuration, authentication, and external services.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/anotherben/claude-harness/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 anotherben/claude-harness --skill blast-radius
Clone the repo
git clone --depth 1 https://github.com/anotherben/claude-harness

Made for: Codex.

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/anotherben/claude-harness/blast-radius.svg)](https://agentmods.dev/skills/anotherben/claude-harness/blast-radius)
Your own site
<a href="https://agentmods.dev/skills/anotherben/claude-harness/blast-radius"><img src="https://agentmods.dev/badge/skills/anotherben/claude-harness/blast-radius.svg" alt="Measured on agentmods" height="20"></a>
Per session 80 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 9,328 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 $0.00080 $0.09328
Opus 5 $0.00040 $0.04664
Sonnet 5 $0.00016 $0.01866
Haiku 4.5 $0.00008 $0.00933

Measured 8d ago against content hash 1ad48d8c3caa, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, 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 8d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/derive_verdict.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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 · 594 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. 8d ago First seen · 594 lines · 80 tokens per session scan A 1ad48d8c3caa

Subscribe to this mod's changes

blast-radius is a skill published in the GitHub repository anotherben/claude-harness (7 stars, last pushed 1mo ago), with no licence file. It adds 80 tokens to every session and 9,328 once invoked, about $0.0004 per session on Opus 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 2026-08-31.