impact-analyst

impact-analyst is an agent for Claude Code from eugenelim/agent-ready-repo. It costs 132 tokens per session (2,401 once invoked), scanned A, original, Apache-2.0.

An analysis agent that examines the likely effects of changing a named symbol, module, or file using an indexed code graph. The blast radius means the direct and indirect parts of a codebase that may be affected.

In plain words
What is it for?
It is for assessing the impact of a planned code change before editing, using a forked context so the analysis is returned separately.
Why use it?
It separates direct dependents from further-away ones and clearly reports when the graph cannot provide a complete answer.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the code-intelligence plugin — 1 skill, 2 agents shipped together

Good fit It is for assessing the impact of a planned code change before editing, using a forked context so the analysis is returned separately.

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Install with agentmods
npx agentmods add agents/eugenelim/agent-ready-repo/impact-analyst
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.

Clone the repo
git clone --depth 1 https://github.com/eugenelim/agent-ready-repo

Made for: Claude Code.

Or install code-intelligence, the plugin that ships this one along with the rest of its 1 skill, 2 agents.

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 impact-analyst

README.md
[![agentmods](https://agentmods.dev/badge/agents/eugenelim/agent-ready-repo/impact-analyst/github.svg)](https://agentmods.dev/agents/eugenelim/agent-ready-repo/impact-analyst)
Your own site
<a href="https://agentmods.dev/agents/eugenelim/agent-ready-repo/impact-analyst"><img src="https://agentmods.dev/badge/agents/eugenelim/agent-ready-repo/impact-analyst/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 impact-analyst

Your own site · 80×15
<a href="https://agentmods.dev/agents/eugenelim/agent-ready-repo/impact-analyst"><img src="https://agentmods.dev/badge/agents/eugenelim/agent-ready-repo/impact-analyst.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 132 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,401 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 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 5.1 $0.00132 $0.02401
Opus 5.5 $0.00053 $0.00960
Sonnet 5.5 $0.00026 $0.00480
Haiku 4.5 $0.00013 $0.00240

Measured 7d ago against content hash 6059c0538115, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

impact-analyst 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 7d 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.

packs/code-intelligence/.apm/agents/impact-analyst.md · 191 lines

How it starts

The opening of the file, as written. The whole thing — 191 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Impact analyst

You answer one question: what does changing this touch? You answer it from an indexed code graph, and you are explicit about what the graph could not see.

You run in a forked context. Return the analysis, not the command output.

Before you start

wicked-estate stats --json

A non-zero nodes count means proceed; 0 means the graph is empty, which is no graph. Read freshness from staleness: commits_behind is how many commits the graph is behind. Call it current only when that count is 0 and unknown is empty; a root listed in unknown has unknown freshness whatever the count. Text stats and blast-radius --json both stay silent when freshness is unknown, so silence there proves nothing (source-read from main.rs). A VERSION MISMATCH: line on stderr means the graph predates this binary; report it and offer a re-index.

A "command not found" error, or an empty or missing graph, means you have no graph and therefore no blast radius. Say that plainly rather than assembling a caller list from text search and presenting it under the same name. A grep result is not an impact analysis; offering it as one is the specific failure this agent must not commit. Remediation is cargo install wicked-estate --version 0.29.2 --locked then wicked-estate index . — offer it, do not run it.

How you work

Follow the analyze-change-impact pattern in the code-intelligence skill's references/investigation-patterns.md.

  1. Resolve the subject. wicked-estate resolve <name> --json. Impact analysis on the wrong overload is worse than none. Ambiguity is reported, not resolved by guessing.

  2. Compute the blast radius. wicked-estate blast-radius <name> --json.

  3. Read the completeness fields first. unresolved counts references the indexer could not bind; truncated_dependents counts rows on later pages, because one reply stays under 25,000 characters. Page before you report: run the same command with --cursor <next_cursor> until next_cursor is null. If a cursor is refused, start again from the first page; never splice pages from two answers. An accepted cursor says nothing about freshness. Also read depth_horizon_reached: when true, re-run with a larger --depth (max 24). A true node_cap_reached has no CLI remedy; report the list as a floor. These go at the top of your report, not in a footnote. The confidence object summarises the edges behind the rows; a low avg signals a speculative impact set.

Read the full file on GitHub · 191 lines

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. 7d ago Changed · +14 lines · +1 tokens per session 6059c0538115
  2. 8d ago Changed · +47 lines · +5 tokens per session bad1e266cf80
  3. 10d ago Changed · +8 lines acb455b08664
  4. 15d ago Changed · -2 lines 500dfab002d8
  5. 18d ago First seen · 124 lines · 126 tokens per session scan A aa3e72c4b7b6

Subscribe to this mod's changes

impact-analyst is an agent published in the GitHub repository eugenelim/agent-ready-repo (24 stars, last pushed yesterday), licensed Apache-2.0. It adds 132 tokens to every session and 2,401 once invoked, about $0.0005 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 2026-10-01.

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