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opencode-safechange: Agent for Claude Code

.opencode/agents/impact-analyzer.md

impact-analyzer is an agent for Claude Code, OpenCode from Apricooooot/opencode-safechange. It costs 17 tokens per session (342 once invoked), scanned A, original, MIT.

A read-only tool for mapping which parts of a code repository may be affected by a proposed change. It traces direct and indirect connections between files, code symbols, configuration, tests, and deployment settings.

In plain words
What is it for?
Use it to assess change risk, identify affected files, plan migrations, and find the repository's existing validation commands.
Why use it?
It helps reveal hidden dependencies and missing test coverage before code is changed. It also separates confirmed findings from likely or unknown ones.

Agent for Claude CodeOpenCode

Written for OpenCode and Claude Code: installed under .opencode/, but also a Claude Code subagent (agents/*.md). Also seen: mentions subagents.

This is Apricooooot/opencode-safechange's own configuration. It tells Claude Code and OpenCode how to work on opencode-safechange itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything opencode-safechange configures →

not rated 95repo 3mo ago A scan 17 tokens original MIT
View source ↗ Apricooooot/opencode-safechange
Reuse

Borrowing it

Nothing to install: this file belongs to Apricooooot/opencode-safechange. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/Apricooooot/opencode-safechange/main/.opencode/agents/impact-analyzer.md
Clone the repo
git clone --depth 1 https://github.com/Apricooooot/opencode-safechange

Made for: Claude Code, OpenCode.

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-analyzer

README.md
[![agentmods](https://agentmods.dev/badge/agents/apricooooot/opencode-safechange/impact-analyzer/github.svg)](https://agentmods.dev/agents/apricooooot/opencode-safechange/impact-analyzer)
Your own site
<a href="https://agentmods.dev/agents/apricooooot/opencode-safechange/impact-analyzer"><img src="https://agentmods.dev/badge/agents/apricooooot/opencode-safechange/impact-analyzer/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-analyzer

Your own site · 80×15
<a href="https://agentmods.dev/agents/apricooooot/opencode-safechange/impact-analyzer"><img src="https://agentmods.dev/badge/agents/apricooooot/opencode-safechange/impact-analyzer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 17 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 342 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 $0.00017 $0.00342
Opus 5.5 $0.00007 $0.00137
Sonnet 5.5 $0.00003 $0.00068
Haiku 4.5 $0.00002 $0.00034

Measured 2mo ago against content hash 0f63823d86dc, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

impact-analyzer 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 2mo 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.

.opencode/agents/impact-analyzer.md · 51 lines

What it actually says

You are the read-only Impact Analyzer.

Given a proposed change:

  1. Detect the languages, frameworks, package managers, build system, tests, CI, and deployment configuration.
  2. Locate the symbol, dependency, schema, or interface being changed.
  3. Use LSP references when available, then corroborate with grep and configuration inspection.
  4. Classify affected files as:
    • direct: imports, calls, implementations, declarations
    • indirect: adapters, serializers, generated types, tests, docs
    • operational: CI, deployment, migrations, environment/config
  5. Assign each finding a confidence: confirmed, likely, or unknown.
  6. Identify missing coverage and validation commands already defined by the repo.

Return a compact structured response:

  • Repository profile
  • Evidence table: file, symbol/line, impact, confidence, reason
  • Risk list: severity, likelihood, mitigation
  • Suggested migration order
  • Validation commands
  • Unknowns and assumptions

Do not modify files, install packages, or claim that a command ran unless you actually executed an allowed command.

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. 2mo ago First seen · 51 lines · 17 tokens per session scan A 0f63823d86dc

Subscribe to this mod's changes

impact-analyzer is an agent published in the GitHub repository Apricooooot/opencode-safechange (95 stars, last pushed 3mo ago), licensed MIT. It adds 17 tokens to every session and 342 once invoked, about $0.0001 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 2026-08-30.

Planning
Related

impact-analyzer compared with agents from other repositories

impact-analyzer next to 6 agents from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
impact-analyzerApricooooot/opencode-safechangeAgent953mo agoMITA17Claude Code, OpenCode
playwright-test-generatormicrosoft/playwrightAgent99ktodayApache-2.0A151Claude Code
.NET-Notebook-Migration-Agentmicrosoft/ai-agents-for-beginnersAgent79ktodayMITA33Claude Code
AVM Owner Triagegithub/awesome-copilotAgent41ktodayMITA61Claude Code
Ultimate Transparent Thinking Beast Modegithub/awesome-copilotAgent41ktodayMITA11Claude Code
code-revieweranthropics/claude-cookbooksAgent54k2d agoMITA52Claude Code
Pimcore Expertgithub/awesome-copilotAgent41ktodayMITA26Claude Code