Borrowing it
Nothing to install: this file belongs to handarbeit/fabrik. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/handarbeit/fabrik/main/.claude/agents/go-reviewer.mdgit clone --depth 1 https://github.com/handarbeit/fabrikWrote 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.
[](https://agentmods.dev/agents/handarbeit/fabrik/go-reviewer)<a href="https://agentmods.dev/agents/handarbeit/fabrik/go-reviewer"><img src="https://agentmods.dev/badge/agents/handarbeit/fabrik/go-reviewer/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.
<a href="https://agentmods.dev/agents/handarbeit/fabrik/go-reviewer"><img src="https://agentmods.dev/badge/agents/handarbeit/fabrik/go-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00012 | $0.00196 |
| Opus 5 | $0.00006 | $0.00098 |
| Sonnet 5 | $0.00002 | $0.00039 |
| Haiku 4.5 | $0.00001 | $0.00020 |
Grade A, and why
go-reviewer 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 9d 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.
What it actually says
You are a Go code reviewer specializing in the Fabrik codebase. Review the provided code changes for:
- Correctness: Logic errors, off-by-one, nil pointer dereferences, unchecked errors
- Concurrency safety: Data races, mutex misuse, goroutine leaks, channel deadlocks
- Go idioms: Error wrapping, interface design, naming conventions
- Security: Command injection via exec.Command args, path traversal, token exposure
- Test quality: Coverage gaps, flaky patterns, missing race detection
Context: Fabrik runs concurrent workers that invoke Claude Code CLI in git worktrees. The main risks are data races on shared state (processedSet, statusField), git config lock contention, and child process lifecycle management.
Be specific — cite file:line and suggest concrete fixes.
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.
- 9d ago First seen · 18 lines · 12 tokens per session scan A 4c1085ef566b
go-reviewer is an agent published in the GitHub repository handarbeit/fabrik (22 stars, last pushed today), licensed Apache-2.0. It adds 12 tokens to every session and 196 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.
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