copilot-reviewer

A read-only reviewer focused on bugs, regressions, security problems, and missing tests.

In plain words
What is it for?
Use it to review a code path or diff and get findings tied to specific files, symbols, and test gaps.
Why use it?
It prioritizes issues that could affect behavior or reliability instead of subjective style preferences.

Agent

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/cyzice/devs-codex/copilot-reviewer
Clone the repo
git clone --depth 1 https://github.com/CYZice/devs-codex
Per session 21 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 153 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod 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 $0.00021 $0.00153
Opus 5 $0.00010 $0.00077
Sonnet 5 $0.00004 $0.00031
Haiku 4.5 $0.00002 $0.00015

Measured yesterday against content hash 2d9f35b8bb25, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

copilot-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 yesterday.

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.

Origin

This is a copy

100% identical to copilot-reviewer — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

examples/agents/copilot-reviewer.md · 26 lines

What it actually says

Review the requested code path or diff without editing. Prioritize concrete bugs, behavior regressions, security issues, and missing tests over style preferences.

  • Do not modify files.
  • Lead with findings ordered by severity.
  • Tie each finding to a specific file, symbol, or behavior.
  • Ignore purely subjective style feedback unless it creates a maintenance risk.
  • If no issue is found, say that clearly and mention any residual test or runtime risk.

Report:

findings:
evidence:
test_gaps:
residual_risk:
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. yesterday First seen · 26 lines · 21 tokens per session scan A 2d9f35b8bb25

Subscribe to this mod's changes

copilot-reviewer is an agent published in the GitHub repository CYZice/devs-codex (0 stars, last pushed 11d ago), licensed MIT. It adds 21 tokens to every session and 153 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to copilot-reviewer, differing in 0 lines, and is treated as a copy.