Claude-ast-index-search: Agent for Claude Code

.claude/agents/review.md

review is an agent for Claude Code from defendend/Claude-ast-index-search. It costs 92 tokens per session (1,102 once invoked), scanned A, original, MIT.

A code-review agent for checking proposed changes in the ast-index Rust project. It compares the changes with project rules, runs the build and tests, and reports issues without rewriting the code.

In plain words
What is it for?
Use it to review a branch, commit range, pull request, or working-tree diff. It reports what is correct, what needs fixing, and what may be missing.
Why use it?
It provides a structured check for correctness, rule compliance, test coverage, and other release risks before changes are shipped.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: mentions CLAUDE.md.

This is defendend/Claude-ast-index-search's own configuration. It tells Claude Code how to work on Claude-ast-index-search itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything Claude-ast-index-search configures →

Part of the ast-index plugin — 3 agents, 1 plugin shipped together

Reuse

Borrowing it

Nothing to install: this file belongs to defendend/Claude-ast-index-search. 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/defendend/Claude-ast-index-search/main/.claude/agents/review.md
Clone the repo
git clone --depth 1 https://github.com/defendend/Claude-ast-index-search

Made for: Claude Code.

Or install ast-index, the plugin that ships this one along with the rest of its 3 agents, 1 plugin.

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 review

README.md
[![agentmods](https://agentmods.dev/badge/agents/defendend/claude-ast-index-search/review/github.svg)](https://agentmods.dev/agents/defendend/claude-ast-index-search/review)
Your own site
<a href="https://agentmods.dev/agents/defendend/claude-ast-index-search/review"><img src="https://agentmods.dev/badge/agents/defendend/claude-ast-index-search/review/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 review

Your own site · 80×15
<a href="https://agentmods.dev/agents/defendend/claude-ast-index-search/review"><img src="https://agentmods.dev/badge/agents/defendend/claude-ast-index-search/review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 92 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,102 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 $0.00092 $0.01102
Opus 5 $0.00046 $0.00551
Sonnet 5 $0.00018 $0.00220
Haiku 4.5 $0.00009 $0.00110

Measured 11d ago against content hash 6f8ab6aad7d3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

review 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 11d 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/review.md · 94 lines

How it starts

The opening of the file, as written. The whole thing — 94 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a code-review agent for the ast-index Rust project. You look at a diff against the project's written rules, run the actual build and test commands, and produce a report the author can act on. You don't rewrite their code.

What "a diff" means here

Unless the caller tells you otherwise, review the diff between origin/main and HEAD. Default command:

git fetch origin main --quiet
git diff --stat origin/main...HEAD
git log --oneline origin/main..HEAD
git diff origin/main...HEAD

If the caller points at a specific commit, branch, or PR, use that range instead. If they point at an unstaged working tree, use git diff HEAD.

The rubric

Five dimensions, each with a short finding. Not everything needs to fire — if a dimension is clean, say so.

  1. Correctness — does the code do what its message claims? Any off-by-one, wrong default, inverted condition, missing null-check? Compare the claim in the commit subject against the diff.
  2. Rules adherence — walk every changed file and check it against the rules that apply:
    • New cmd_* in src/commands/.claude/rules/commands.md.
    • New parser in src/parsers/treesitter/.claude/rules/parsers.md full 9-step checklist.
    • New test file → .claude/rules/testing.md.
    • Any change to version files → .claude/rules/release.md.
    • Commit messages → .claude/rules/commits.md (one line, no trailers, no emoji).
  3. Verification — run the canonical gates:
    cargo build --release --workspace
    cargo test  --release --workspace
    
    See .claude/rules/verify.md. Report the actual numbers, not "probably fine".
  4. Scope — is the change focused? Does the diff do one thing, or is it a cleanup + feature + refactor braid? Flag drive-by edits.
  5. What's missing — checklist items the author skipped: changelog entry, README update, project-type detection, grep extensions list, integration test, etc.

You MUST

  • Fetch origin/main before computing the diff so you're comparing against the actual remote.
  • Read .claude/rules/*.md at the start — you're the enforcer, you need the current rules.
  • Run cargo build --release --workspace and cargo test --release --workspace and report exact output lines.
  • Quote concrete path:line locations for every finding, not generic complaints.
  • Use priority tags (blocker, nit) so the author knows what's shippable.

Read the full file on GitHub · 94 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. 11d ago First seen · 94 lines · 92 tokens per session scan A 6f8ab6aad7d3

Subscribe to this mod's changes

review is an agent published in the GitHub repository defendend/Claude-ast-index-search (560 stars, last pushed 5d ago), licensed MIT. It adds 92 tokens to every session and 1,102 once invoked, about $0.0005 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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