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 skills add moeru-ai/auv --skill rust-refactor-helpergit clone --depth 1 https://github.com/moeru-ai/auvWrote 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/skills/moeru-ai/auv/rust-refactor-helper)<a href="https://agentmods.dev/skills/moeru-ai/auv/rust-refactor-helper"><img src="https://agentmods.dev/badge/skills/moeru-ai/auv/rust-refactor-helper.svg" alt="Measured on agentmods" 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 | $0.00045 | $0.01629 |
| Opus 5 | $0.00023 | $0.00814 |
| Sonnet 5 | $0.00009 | $0.00326 |
| Haiku 4.5 | $0.00005 | $0.00163 |
Grade C, and why
rust-refactor-helper scanned grade C with 1 finding 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 7d 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.
Hidden instructionshighPrompt injection
Directives inside HTML comments, invisible characters or bidirectional overrides are read by the model and not by the person reviewing the file.
```rust let file = File::open(&path)?; let mut contents = String::new(); file.read_to_string(&mut contents)?; let config: Config = toml::from_str(&contents)?; validate_config(&config)?; ``` ### Analysis **Inputs:** pat How it starts
The opening of the file, as written. The whole thing — 274 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Rust Refactor Helper
Perform safe refactoring with comprehensive impact analysis.
Usage
/rust-refactor-helper <action> <target> [--dry-run]
Actions:
rename <old> <new>- Rename symbolextract-fn <selection>- Extract to functioninline <fn>- Inline functionmove <symbol> <dest>- Move to module
Examples:
/rust-refactor-helper rename parse_config load_config/rust-refactor-helper extract-fn src/main.rs:20-35/rust-refactor-helper move UserService src/services/
LSP Operations Used
Pre-Refactor Analysis
# Find all references before renaming
LSP(
operation: "findReferences",
filePath: "src/lib.rs",
line: 25,
character: 8
)
# Get symbol info
LSP(
operation: "hover",
filePath: "src/lib.rs",
line: 25,
character: 8
)
# Check call hierarchy for move operations
LSP(
operation: "incomingCalls",
filePath: "src/lib.rs",
line: 25,
character: 8
)
Refactoring Workflows
1. Rename Symbol
User: "Rename parse_config to load_config"
│
▼
[1] Find symbol definition
LSP(goToDefinition)
│
▼
[2] Find ALL references
LSP(findReferences)
│
▼
[3] Categorize by file
│
▼
[4] Check for conflicts
- Is 'load_config' already used?
- Are there macro-generated uses?
│
▼
[5] Show impact analysis (--dry-run)
│
▼
[6] Apply changes with Edit tool
Output:
## Rename: parse_config → load_config
### Impact Analysis
**Definition:** src/config.rs:25
**References found:** 8
| File | Line | Context | Change |
|------|------|---------|--------|
| src/config.rs | 25 | `pub fn parse_config(` | Definition |
| src/config.rs | 45 | `parse_config(path)?` | Call |
| src/main.rs | 12 | `config::parse_config` | Import |
| src/main.rs | 30 | `let cfg = parse_config(` | Call |
| src/lib.rs | 8 | `pub use config::parse_config` | Re-export |
| tests/config_test.rs | 15 | `parse_config("test.toml")` | Test |
| tests/config_test.rs | 25 | `parse_config("")` | Test |
| docs/api.md | 42 | `parse_config` | Documentation |
### Potential Issues
⚠️ **Documentation reference:** docs/api.md:42 may need manual update
⚠️ **Re-export:** src/lib.rs:8 - public API change
### Proceed?
- [x] --dry-run (preview only)
- [ ] Apply 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.
- 7d ago First seen · 274 lines · 45 tokens per session scan C acda4e50e8bf
rust-refactor-helper is a skill published in the GitHub repository moeru-ai/auv (25 stars, last pushed 4d ago), licensed Apache-2.0. It adds 45 tokens to every session and 1,629 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it C with 1 finding (hidden instructions). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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