What is stax-reviewer?

A read-only code reviewer for stax changes, checking the implementation against its plan, acceptance criteria, tests, documentation, and failure cases.

Use it to inspect a diff and its supporting artifacts, classify findings by severity, and write a pass-or-fail review report with evidence.

It provides an independent check before release without changing files or Git and pull-request state.

How cesarferreira/stax configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to cesarferreira/stax. 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/cesarferreira/stax/main/.claude/agents/stax-reviewer.md

Clone the repo

git clone --depth 1 https://github.com/cesarferreira/stax

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.

README.md

[![agentmods](https://agentmods.dev/badge/agents/cesarferreira/stax/stax-reviewer/github.svg)](https://agentmods.dev/agents/cesarferreira/stax/stax-reviewer)

Your own site

<a href="https://agentmods.dev/agents/cesarferreira/stax/stax-reviewer"><img src="https://agentmods.dev/badge/agents/cesarferreira/stax/stax-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.

Your own site · 80×15

<a href="https://agentmods.dev/agents/cesarferreira/stax/stax-reviewer"><img src="https://agentmods.dev/badge/agents/cesarferreira/stax/stax-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 15 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 244 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.

Model	Per session	Once invoked
Fable 5.1	$0.00015	$0.00244
Opus 5.5	$0.00006	$0.00098
Sonnet 5.5	$0.00003	$0.00049
Haiku 4.5	$0.00002	$0.00024

Measured 21d ago against content hash 1c8685235972, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

stax-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 21d 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.

.claude/agents/stax-reviewer.md · 28 lines

What it actually says

Role

You are the read-only review gate. Read repository instructions, the approved plan, current diff, tests, docs, and _workspace/<run_id>/implementation-pass-N.md. Do not edit files, run mutating commands, or change git/PR state.

Review Contract

Evaluate plan and acceptance-criteria conformance, correctness and failure handling, stax conventions, happy/error/edge coverage, documentation impact, risk classification, and unintended scope. Inspect actual code rather than trusting implementation claims.

Write _workspace/<run_id>/review-pass-N.md for the supplied pass N (0..2) with:

VERDICT: PASS | FAIL

FINDINGS:
- [critical|high|medium|low] path:line — problem, impact, and concrete correction

NOTES:
- verified strengths or "none"

Rank findings by severity. PASS requires no correctness, plan-conformance, test, or required-doc findings; purely optional suggestions belong in notes and must not trigger repair. Cite file and line evidence for every finding.

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.

21d ago First seen · 28 lines · 15 tokens per session scan A 1c8685235972

Subscribe to this mod's changes

stax-reviewer is an agent published in the GitHub repository cesarferreira/stax (133 stars, last pushed 2d ago), licensed MIT. It adds 15 tokens to every session and 244 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 2026-10-17.

Code review Git and workflow graphite prs stack stacked stacks

stax-reviewer next to 6 agents from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
stax-reviewercesarferreira/stax	Agent	133	2d ago	MIT	A	15	Claude Code
component-improverdavila7/claude-code-templates	Agent	33k	yesterday	MIT	A	39	Claude Code
release-validatorrlajous/claude-code-commands	Agent	30	3d ago	MIT	A	25	Claude Code
FlowSubmitNWatchPRjpoley/flowspec	Agent	50	28d ago	Apache-2.0	A	30	Claude Code
consistency-and-historyncoevoet/claude-review-all	Agent	45	4d ago	MIT	A	34	Claude Code
pr-creatoraxiomantic/spellbook	Agent	11	2d ago	MIT	A	75	Claude Code
fe-git-operatorsh5623/fe-rail	Agent	1	14d ago	MIT	A	83	Claude Code

stax: Agent for Claude Code