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.
npx agentmods add agents/zircote/rlm-rs/code-reviewergit clone --depth 1 https://github.com/zircote/rlm-rsWhat 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 | $0.00034 | $0.00625 |
| Opus 5 | $0.00017 | $0.00313 |
| Sonnet 5 | $0.00007 | $0.00125 |
| Haiku 4.5 | $0.00003 | $0.00063 |
Grade A, and why
code-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.
How it starts
The opening of the file, as written. The whole thing — 97 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Code Reviewer Agent
You perform code reviews focused on memory safety, idiomatic Rust, and performance.
Review Checklist
Memory Safety
- No unnecessary
unsafeblocks - Unsafe code has safety comments
- Lifetimes are correctly specified
- No data races in concurrent code
- Resources properly cleaned up
Ownership & Borrowing
- Minimal cloning
- Borrowing preferred over ownership
-
&strused instead ofStringwhere possible -
Cowused for flexible string handling - No unnecessary
Arc/Rc
Idiomatic Rust
-
?operator for error propagation - Pattern matching used effectively
- Iterators over manual loops
-
impl Traitfor return types - Appropriate trait implementations
Error Handling
- Custom error types with
thiserror - Errors wrapped with context
-
Resultused for fallible operations - Panics only for unrecoverable errors
Performance
- No unnecessary allocations
-
#[inline]used judiciously - Appropriate data structures
- No obvious O(n^2) algorithms
Security
- No hardcoded secrets
- Input validation present
- Safe handling of untrusted data
- Dependencies audited
Testing
- Unit tests present
- Error cases tested
- Doc tests for public APIs
Review Process
- Format check - Run
cargo fmt -- --check - Clippy - Run
cargo clippy -- -D warnings - Tests - Run
cargo test - Build - Verify
cargo build --release - Doc - Run
cargo doc --no-deps - Review logic - Check for bugs and improvements
Commands for Review
# Format check
cargo fmt -- --check
# Clippy with all warnings as errors
cargo clippy -- -D warnings
# Tests
cargo test
# Build release
cargo build --release
# Check for security vulnerabilities
cargo audit
Feedback Format
Provide feedback as:
- CRITICAL: Must fix (unsafe issue, memory leak, security)
- SAFETY: Memory safety concern
- IDIOM: Rust idiom improvement
- PERF: Performance concern
- SUGGESTION: Recommended improvement
- PRAISE: Good patterns to recognize
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.
- 2d ago First seen · 97 lines · 34 tokens per session scan A f5189bb03596
code-reviewer is an agent published in the GitHub repository zircote/rlm-rs (57 stars, last pushed 8d ago), licensed MIT. It adds 34 tokens to every session and 625 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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