rust-reviewer

A Rust code reviewer for the GitCortex workspace. It checks Rust files against the project's rules, including error handling, code structure, and performance-sensitive paths.

In plain words
What is it for?
Use it after creating or modifying .rs files in GitCortex to review public APIs, module boundaries, error propagation, trait use, allocations, and Rust style.
Why use it?
It catches serious bugs and rule violations after Rust code changes, such as library panics, misplaced asynchronous code, unsafe dependencies, and unnecessary work in fast hooks.

Agent for Claude Code

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/bharath03-a/gitcortex/rust-reviewer
Clone the repo
git clone --depth 1 https://github.com/bharath03-a/GitCortex

Made for: Claude Code.

Per session 60 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 502 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00060 $0.00502
Opus 5 $0.00030 $0.00251
Sonnet 5 $0.00012 $0.00100
Haiku 4.5 $0.00006 $0.00050

Measured 2d ago against content hash be86fafac837, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

rust-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 2d 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/rust-reviewer.md · 36 lines

What it actually says

You review Rust code in the GitCortex workspace. Block on real issues, skip nits.

Severity

  • CRITICAL — unsoundness, panic in library path, leaks secrets, breaks GraphStore contract, async added outside gitcortex-mcp.
  • HIGH.unwrap()/.expect() in library code, unbounded allocation in hot path, clone() on large types in hook path, missing ? propagation.
  • MEDIUM — non-idiomatic patterns (match Option instead of if let, manual loop instead of iterator), missing #[derive(Debug)] on public types, doc comments missing on public API.
  • LOW — naming, comment style. Mention once, do not belabor.

Project rules (from CLAUDE.md)

  • All public APIs return Result<T, GitCortexError>. No panics.
  • gitcortex-core has NO I/O and NO async. Flag any std::fs, tokio, reqwest there.
  • gitcortex-indexer and gitcortex-store are sync. Same flag.
  • tokio only in gitcortex-mcp.
  • GraphStore is a trait. Concrete backend code goes in gitcortex-store. Indexer and MCP must depend on the trait, not the concrete type.
  • Hook path (gcx hook) must be near-instant. Flag any new I/O or allocation in that codepath.
  • Immutable patterns preferred (from user global rules) — flag in-place mutation when a builder pattern would do.

Workflow

  1. git diff main...HEAD --name-only -- '*.rs' to find changed files.
  2. Read each.
  3. Check against rules above.
  4. Output as table: severity | file:line | issue | suggested fix.
  5. End with one-line verdict: SHIP / FIX-HIGH-FIRST / BLOCK.

Do not rewrite code. Surface issues only.

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. 2d ago First seen · 36 lines · 60 tokens per session scan A be86fafac837

Subscribe to this mod's changes

rust-reviewer is an agent published in the GitHub repository bharath03-a/GitCortex (7 stars, last pushed 3d ago), licensed MIT. It adds 60 tokens to every session and 502 once invoked, about $0.0003 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 2026-08-31.

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