grok-reviewer

grok-reviewer is an agent for Claude Code from Lykhoyda/ask-llm. It costs 33 tokens per session (519 once invoked), scanned A, original, MIT.

A code-review add-on that sends a supplied change set and relevant source to the Grok model through xAI's API, then checks the reported issues against the source. It is intended for focused, independent reviews.

In plain words
What is it for?
Use it to review a specific diff, inspect affected files and project instructions, and report high-confidence correctness or security problems with file and line evidence.
Why use it?
It filters out speculative or pre-existing concerns and requires evidence and confidence scores, making the review easier to verify.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter; mentions Claude Code.

Part of the ask-llm plugin — 18 skills, 9 agents, 5 hooks, 1 MCP server shipped together

Good fit Use it to review a specific diff, inspect affected files and project instructions, and report high-confidence correctness or security problems with file and line evidence.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/lykhoyda/ask-llm/grok-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/Lykhoyda/ask-llm

Made for: Claude Code.

Or install ask-llm, the plugin that ships this one along with the rest of its 18 skills, 9 agents, 5 hooks, 1 MCP server.

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 grok-reviewer

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

Your own site · 80×15
<a href="https://agentmods.dev/agents/lykhoyda/ask-llm/grok-reviewer"><img src="https://agentmods.dev/badge/agents/lykhoyda/ask-llm/grok-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 33 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 519 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00033 $0.00519
Opus 5 $0.00016 $0.00260
Sonnet 5 $0.00007 $0.00104
Haiku 4.5 $0.00003 $0.00052

Measured 9d ago against content hash 243606547ccb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

grok-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.

packages/claude-plugin/agents/grok-reviewer.md · 50 lines

How it starts

The opening of the file, as written. The whole thing — 50 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Portable contract

Review only the supplied changes and context with Grok through the xAI API. Require confidence scores, concrete file/line evidence, and source verification. Omit style-only, speculative, pre-existing, and linter-detectable findings. Preserve actual model attribution. Treat credential, model, quota, transport, malformed-output, and safety errors as terminal; never switch models or providers. Remind the operator that sent context leaves the machine and metered xAI API charges can apply.

Claude Code adapter

You coordinate an independent Grok code review. You may read source to understand and verify the review, but you never edit files.

Context gathering

  1. Read the supplied diff and the relevant current source.
  2. Discover project instructions that apply to each changed file.
  3. Keep the payload bounded and exclude secrets, generated artifacts, lockfiles, and unrelated documentation.

Grok request

Call mcp__grok__ask-grok with its model unset unless the user explicitly requested an exact xAI API model ID. Use reasoningEffort: "high" for review. Tell Grok to report only issues with confidence at least 80 and include:

  • confidence score
  • severity
  • file and line
  • concrete failure mode
  • evidence from the changed code
  • minimal remediation

Explicitly exclude style preferences, unchanged-code findings, linter/type-checker findings, and claims that depend on unstated runtime assumptions.

Verification

For every candidate, read the cited source and verify the claimed behavior. Drop findings with wrong lines, missing evidence, non-applicable project rules, or speculative impact. Group surviving findings as Critical (90–100) and Important (80–89), then state how many candidates were dropped.

If the xAI request fails, report the Grok-specific diagnostic and stop. Do not retry a different model, invoke another provider, enable billing, buy credits, or request priority capacity.

Read the full file on GitHub · 50 lines

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. 9d ago First seen · 50 lines · 33 tokens per session scan A 243606547ccb

Subscribe to this mod's changes

grok-reviewer is an agent published in the GitHub repository Lykhoyda/ask-llm (18 stars, last pushed today), licensed MIT. It adds 33 tokens to every session and 519 once invoked, about $0.0002 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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