compatibility-reviewer

compatibility-reviewer is an agent for Claude Code from ZacheryGlass/.claude. It costs 515 tokens per session (4,670 once invoked), scanned A, original, no licence file.

A compatibility reviewer for changes to public interfaces, contracts, and data formats that other parts of a system use.

In plain words
What is it for?
Use it when changing environment variables, APIs, saved state formats, command-line options, or exported code definitions.
Why use it?
It helps find breaking changes before other code, tools, or users depend on them.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

Good fit Use it when changing environment variables, APIs, saved state formats, command-line options, or exported code definitions.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/zacheryglass/.claude/compatibility-reviewer
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.

Clone the repo
git clone --depth 1 https://github.com/ZacheryGlass/.claude

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 compatibility-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/zacheryglass/.claude/compatibility-reviewer/github.svg)](https://agentmods.dev/agents/zacheryglass/.claude/compatibility-reviewer)
Your own site
<a href="https://agentmods.dev/agents/zacheryglass/.claude/compatibility-reviewer"><img src="https://agentmods.dev/badge/agents/zacheryglass/.claude/compatibility-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.

agentmods 80×15 button for compatibility-reviewer

Your own site · 80×15
<a href="https://agentmods.dev/agents/zacheryglass/.claude/compatibility-reviewer"><img src="https://agentmods.dev/badge/agents/zacheryglass/.claude/compatibility-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 515 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 4,670 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00515 $0.04670
Opus 5 $0.00258 $0.02335
Sonnet 5 $0.00103 $0.00934
Haiku 4.5 $0.00052 $0.00467

Measured 13d ago against content hash d68499943628, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

compatibility-reviewer scanned grade A with 1 finding 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 13d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- For HTTP changes, check both the server handler AND all client code (React fetch calls, Python scripts, curl examples in docs).
agents/compatibility-reviewer.md · 260 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 13d ago First seen · 260 lines · 515 tokens per session scan A d68499943628

Subscribe to this mod's changes

compatibility-reviewer is an agent published in the GitHub repository ZacheryGlass/.claude (599 stars, last pushed 2mo ago), with no licence file. It adds 515 tokens to every session and 4,670 once invoked, about $0.0026 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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