harness:impact-analysis

harness:impact-analysis is a command for Claude Code from Intense-Visions/harness-engineering. It costs 21 tokens per session (250 once invoked), scanned A, original, MIT.

A code-change analysis tool that traces which files may be affected when you edit a file. It uses a graph of project relationships to map possible consequences.

In plain words
What is it for?
Use it to inspect changed files, find related code, rank possible risks, and produce an impact report.
Why use it?
It reduces the guesswork involved in answering “what might this change break?” and highlights risky areas before you modify them.

Command for Claude Code

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.

agentmods
npx agentmods add commands/intense-visions/harness-engineering/impact-analysis
Clone the repo
git clone --depth 1 https://github.com/Intense-Visions/harness-engineering

Made for: Claude Code.

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 harness:impact-analysis

README.md
[![agentmods](https://agentmods.dev/badge/commands/intense-visions/harness-engineering/impact-analysis.svg)](https://agentmods.dev/commands/intense-visions/harness-engineering/impact-analysis)
Your own site
<a href="https://agentmods.dev/commands/intense-visions/harness-engineering/impact-analysis"><img src="https://agentmods.dev/badge/commands/intense-visions/harness-engineering/impact-analysis.svg" alt="Measured on agentmods" height="20"></a>
Per session 21 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 250 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original 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 $0.00021 $0.00250
Opus 5 $0.00010 $0.00125
Sonnet 5 $0.00004 $0.00050
Haiku 4.5 $0.00002 $0.00025

Measured 3d ago against content hash a0d0535983cc, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

harness:impact-analysis 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 3d 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.

.claude-plugin/commands/impact-analysis.md · 39 lines

What it actually says

Phases:

  • identify: Identify changed files from diff or input
  • analyze: Query graph for impact of each changed file
  • assess: Rank findings by risk and generate report

<execution_context> @agents/skills/claude-code/harness-impact-analysis/SKILL.md @agents/skills/claude-code/harness-impact-analysis/skill.yaml </execution_context>

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. 3d ago First seen · 39 lines · 21 tokens per session scan A a0d0535983cc

Subscribe to this mod's changes

harness:impact-analysis is a command published in the GitHub repository Intense-Visions/harness-engineering (19 stars, last pushed 3d ago), licensed MIT. It adds 21 tokens to every session and 250 once invoked, about $0.0001 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 2026-08-30.