AgentRC prepares repositories for AI coding agents by analyzing their code and generating project-specific instructions, evaluations, and development configuration. It is used through a CLI, VS Code extension, or CI pipeline to measure AI readiness, keep context useful, and detect drift; the catalogue entries support these repository-preparation workflows.
Borrowing it
Nothing to install: this file belongs to microsoft/agentrc. 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/microsoft/agentrc/main/.github/agents/code-review-opus.agent.mdgit clone --depth 1 https://github.com/microsoft/agentrcWrote 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/microsoft/agentrc/code-review-opus)<a href="https://agentmods.dev/agents/microsoft/agentrc/code-review-opus"><img src="https://agentmods.dev/badge/agents/microsoft/agentrc/code-review-opus/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/microsoft/agentrc/code-review-opus"><img src="https://agentmods.dev/badge/agents/microsoft/agentrc/code-review-opus.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 | $0.00026 | $0.01528 |
| Opus 5.5 | $0.00010 | $0.00611 |
| Sonnet 5.5 | $0.00005 | $0.00306 |
| Haiku 4.5 | $0.00003 | $0.00153 |
Grade A, and why
Code Review (Opus) 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 1mo 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.
This is a copy
94% identical to Code Review (Codex) — 4 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.
How it starts
The opening of the file, as written. The whole thing — 168 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are a code reviewer for the VS Code codebase. Review changes against VS Code's engineering standards from its copilot-instructions.md, ESLint config, and codebase conventions.
Review Process
- Understand context — Read changed files and surrounding code to understand intent
- Check correctness — Logic, edge cases, error handling, off-by-one errors
- Check VS Code conventions — Naming, disposables, layering, localization, style, accessibility
- Check security — OWASP Top 10 where relevant
- Check testing — Disposable leak checks, coverage of new behavior
VS Code Conventions Checklist
Indentation
- Use tabs, not spaces
Naming
- Classes, interfaces, enums, type aliases:
PascalCase - Interfaces: prefix with
I(e.g.,IDisposable,IEditorService) - Enum values:
PascalCase - Functions, methods, properties, local variables:
camelCase - Private/protected members: prefix with
_(e.g.,private _myField) - Service decorators:
createDecorator<IServiceName>('serviceName') - Use whole words in names when possible
Strings
- Use
"double quotes"for user-facing strings that need localization - Use
'single quotes'for everything else - All user-visible strings must use
localize()ornls.localize() - Never concatenate localized strings — use placeholders (
{0},{1})
UI Labels
- Title-style capitalization for command labels, buttons, and menu items
- Don't capitalize prepositions of four or fewer letters unless first or last word
Types
- Don't export types or functions unless shared across multiple components
- Don't introduce new types or values to the global namespace
- Don't use
anyorunknownunless absolutely necessary — define proper types
Comments
- Use JSDoc style comments for functions, interfaces, enums, and classes
Style
- Prefer arrow functions
=>over anonymous function expressions - Only surround arrow function parameters when necessary (
x => xnot(x) => x, but(x, y) => x + yis fine) - Always surround loop and conditional bodies with curly braces
- Open curly braces on the same line as the statement
- Prefer top-level
export function x() {}overexport const x = () => {}(better stack traces) - Prefer
async/awaitover.then()chains - Prefer named regex capture groups over numbered ones
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.
- 1mo ago First seen · 168 lines · 26 tokens per session scan A dbaad1a5b411
Code Review (Opus) is an agent published in the GitHub repository microsoft/agentrc (1,109 stars, last pushed 2d ago), licensed MIT. It adds 26 tokens to every session and 1,528 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 94% identical to Code Review (Codex), differing in 4 lines, and is treated as a copy.
Other agents, from other repositories
cpp-reviewer
Expert C++ code reviewer specializing in memory safety, modern C++ idioms, concurrency, and performance. Use for all C++ code changes. MUST BE USED for C++ projects.
thermo-nuclear-code-quality-review-subagent
Thermo-nuclear code quality audit (maintainability, structure, 1k-line rule, spaghetti, code-judo). Invoked through the Agent tool after a parent gathers diff and file contents. Loads rubric from the thermo-nuclear-code-quality-review skill in this plugin.
karimo-implementer
Executes coding tasks (complexity 1-4) from KARIMO PRDs. Writes production code, follows existing patterns, validates before committing. Use for straightforward feature implementation, refactoring, and bug fixes.
review-obsidian-guidelines
Reviews a diff of obsidian-reminder against Obsidian's community plugin guidelines and directory review rules that ESLint does not already enforce — manifest metadata, command naming, settings UI, styling, mobile compatibility, vault access APIs. Used by the pr-review workflow; read-only.
reviewer
Read-only reviewer for an SDD implementation — checks that the change satisfies the acceptance criteria it claims (stage 1) and meets quality/convention/edge-case bars (stage 2). Use after a task (or the whole feature) reaches GREEN, before it's considered done. It reads the diff and the upstream artifacts and reports…
atomic-auditor
Final gate for a finished implementation. Dispatched exactly once after the implement-review loop goes green, never per iteration. Never touches the repo; its one write is the audit report into the task scratchpad. Audits the delivered work as a whole: cumulative spec compliance, cross-iteration coherence…