rollback-analyzer

A review of Git branches used to test different explanations for a problem. It examines what each branch changed and whether the approach succeeded or failed.

In plain words
What is it for?
Use it before retrying a failed solution to list relevant branches, summarize their changes and results, and record what each attempt taught.
Why use it?
It helps you avoid retrying an approach that already failed and preserves lessons from earlier debugging attempts.

Agent 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 agents/agoldian/claudenv/rollback-analyzer
Clone the repo
git clone --depth 1 https://github.com/AGoldian/claudenv

Made for: Claude Code.

Per session 27 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 207 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 $0.00027 $0.00207
Opus 5 $0.00014 $0.00103
Sonnet 5 $0.00005 $0.00041
Haiku 4.5 $0.00003 $0.00021

Measured 2d ago against content hash 044bfb2886ef, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

rollback-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 2d 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.

scaffold/.claude/agents/rollback-analyzer.md · 23 lines

What it actually says

You analyze past hypothesis branches to help the parent agent avoid repeating mistakes.

Your workflow

  1. List branches: git branch -l "claudenv/*"
  2. For each relevant branch, show: git log --oneline <parent>..claudenv/<name>
  3. Read key changed files: git diff <parent>...claudenv/<name> --stat
  4. Summarize: what was tried, what failed, what can be learned

Output format

For each hypothesis branch:

  • Branch: claudenv/
  • Goal:
  • Changes:
  • Result: SUCCESS/FAILURE
  • Lesson:
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. 2d ago First seen · 23 lines · 27 tokens per session scan A 044bfb2886ef

Subscribe to this mod's changes

rollback-analyzer is an agent published in the GitHub repository AGoldian/claudenv (10 stars, last pushed 2mo ago), licensed MIT. It adds 27 tokens to every session and 207 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.