comparison-report-generator

comparison-report-generator is an agent for Claude Code from konveyor-ecosystem/playpen-pf-mig-skills. It costs 19 tokens per session (544 once invoked), scanned A, original, Apache-2.0.

A report generator that compares two versions of a codebase and turns the comparison data into an HTML report with plain-language notes. It focuses its explanations on important API, behavior, and structural changes.

In plain words
What is it for?
Use it to review modified, added, and removed files and document the most important migration changes.
Why use it?
It makes a raw file comparison easier to understand by explaining what significant changes mean in the context of a migration and whether they appear intentional.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: mentions Claude Code; mentions Gemini CLI.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is python3 scripts/generate_comparison_report.py <workspace>.

Good fit Use it to review modified, added, and removed files and document the most important migration changes.

Compare 6 agents from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/konveyor-ecosystem/playpen-pf-mig-skills
agentmods
npx agentmods add agents/konveyor-ecosystem/playpen-pf-mig-skills/comparison-report-generator

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 comparison-report-generator

README.md
[![agentmods](https://agentmods.dev/badge/agents/konveyor-ecosystem/playpen-pf-mig-skills/comparison-report-generator/github.svg)](https://agentmods.dev/agents/konveyor-ecosystem/playpen-pf-mig-skills/comparison-report-generator)
Your own site
<a href="https://agentmods.dev/agents/konveyor-ecosystem/playpen-pf-mig-skills/comparison-report-generator"><img src="https://agentmods.dev/badge/agents/konveyor-ecosystem/playpen-pf-mig-skills/comparison-report-generator/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 comparison-report-generator

Your own site · 80×15
<a href="https://agentmods.dev/agents/konveyor-ecosystem/playpen-pf-mig-skills/comparison-report-generator"><img src="https://agentmods.dev/badge/agents/konveyor-ecosystem/playpen-pf-mig-skills/comparison-report-generator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 19 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 544 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 $0.00019 $0.00544
Opus 5 $0.00010 $0.00272
Sonnet 5 $0.00004 $0.00109
Haiku 4.5 $0.00002 $0.00054

Measured 12d ago against content hash da9cc634c159, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

comparison-report-generator 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 12d 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.

agents/comparison-report-generator.md · 80 lines

What it actually says

Comparison Report Generator

Enrich comparison data with migration-context annotations and generate the final HTML report.

Inputs

  • Workspace directory: path containing comparison-data.json
  • Label A: human-readable label for reference A
  • Label B: human-readable label for reference B

Process

1. Read Comparison Data

Read <workspace>/comparison-data.json. Understand the overall shape:

  • How many files were modified, added, removed
  • What change categories are present
  • What errors occurred (if any)

2. Annotate Significant Changes

For the top ~20 most significant changes (prioritize by: api_changes first, then semantic, then structural, then additive/subtractive — skip cosmetic), do the following:

  1. Read the source files from both directories (paths are in metadata.repo_a.path and metadata.repo_b.path)
  2. Read the text_diff for the file from comparison-data.json
  3. Write a concise natural-language annotation (1-3 sentences) describing what changed in migration context. Focus on:
    • What API was changed and why it matters
    • What behavior changed
    • Whether the change looks intentional or accidental
    • How it compares between the two references

Add each annotation to the annotations array in comparison-data.json:

{
  "path": "src/App.tsx",
  "text": "Changed PageSection variant from 'light' to 'default' — this is the PF6 equivalent of the deprecated 'light' variant."
}

3. Write Updated Data

Write the updated comparison-data.json with the annotations added.

4. Generate HTML Report

Run:

python3 scripts/generate_comparison_report.py <workspace>

This produces <workspace>/comparison-report.html.

5. Verify Report

Confirm that comparison-report.html exists and is non-empty.

Output

Return the path to comparison-report.html:

Report generated: <workspace>/comparison-report.html
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. 12d ago First seen · 80 lines · 19 tokens per session scan A da9cc634c159

Subscribe to this mod's changes

comparison-report-generator is an agent published in the GitHub repository konveyor-ecosystem/playpen-pf-mig-skills (2 stars, last pushed 4mo ago), licensed Apache-2.0. It adds 19 tokens to every session and 544 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 2026-08-31.

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