auv: Skill for Claude Code

.agents/skills/rust-symbol-analyzer/SKILL.md

rust-symbol-analyzer is a skill for Claude Code from moeru-ai/auv. It costs 51 tokens per session (1,430 once invoked), scanned A, original, Apache-2.0.

A Rust project-structure guide that uses LSP, the language tools that understand source code, to list symbols such as structs, traits, functions, and modules.

In plain words
What is it for?
Use it to inspect a whole Rust project or a file, or to list a particular kind of symbol.
Why use it?
It gives a quick view of how Rust files and projects are organized without reading every line of code.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: installed under .agents/ (shared by several agents).

This is moeru-ai/auv's own configuration. It tells Claude Code how to work on auv 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 auv configures →

Reuse

Borrowing it

Nothing to install: this file belongs to moeru-ai/auv. 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/moeru-ai/auv/main/.agents/skills/rust-symbol-analyzer/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/moeru-ai/auv

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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Per session 51 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,430 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00051 $0.01430
Opus 5.5 $0.00020 $0.00572
Sonnet 5.5 $0.00010 $0.00286
Haiku 4.5 $0.00005 $0.00143

Measured 2mo ago against content hash 1be1ac481eef, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

rust-symbol-analyzer 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 2mo 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.

.agents/skills/rust-symbol-analyzer/SKILL.md · 223 lines

How it starts

The opening of the file, as written. The whole thing — 223 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Rust Symbol Analyzer

Analyze project structure by examining symbols across your Rust codebase.

Usage

/rust-symbol-analyzer [file.rs] [--type struct|trait|fn|mod]

Examples:

  • /rust-symbol-analyzer - Analyze entire project
  • /rust-symbol-analyzer src/lib.rs - Analyze single file
  • /rust-symbol-analyzer --type trait - List all traits in project

LSP Operations

1. Document Symbols (Single File)

Get all symbols in a file with their hierarchy.

LSP(
  operation: "documentSymbol",
  filePath: "src/lib.rs",
  line: 1,
  character: 1
)

Returns: Nested structure of modules, structs, functions, etc.

2. Workspace Symbols (Entire Project)

Search for symbols across the workspace.

LSP(
  operation: "workspaceSymbol",
  filePath: "src/lib.rs",
  line: 1,
  character: 1
)

Note: Query is implicit in the operation context.

Workflow

User: "What's the structure of this project?"
    │
    ▼
[1] Find all Rust files
    Glob("**/*.rs")
    │
    ▼
[2] Get symbols from each key file
    LSP(documentSymbol) for lib.rs, main.rs
    │
    ▼
[3] Categorize by type
    │
    ▼
[4] Generate structure visualization

Output Format

Project Overview

## Project Structure: my-project

### Modules
├── src/
│   ├── lib.rs (root)
│   ├── config/
│   │   ├── mod.rs
│   │   └── parser.rs
│   ├── handlers/
│   │   ├── mod.rs
│   │   ├── auth.rs
│   │   └── api.rs
│   └── models/
│       ├── mod.rs
│       ├── user.rs
│       └── order.rs
└── tests/
    └── integration.rs

By Symbol Type

## Symbols by Type

### Structs (12)
| Name | Location | Fields | Derives |
|------|----------|--------|---------|
| Config | src/config.rs:10 | 5 | Debug, Clone |
| User | src/models/user.rs:8 | 4 | Debug, Serialize |
| Order | src/models/order.rs:15 | 6 | Debug, Serialize |
| ... | | | |

### Traits (4)
| Name | Location | Methods | Implementors |
|------|----------|---------|--------------|
| Handler | src/handlers/mod.rs:5 | 3 | AuthHandler, ApiHandler |
| Repository | src/db/mod.rs:12 | 5 | UserRepo, OrderRepo |
| ... | | | |

### Functions (25)
| Name | Location | Visibility | Async |
|------|----------|------------|-------|
| main | src/main.rs:10 | pub | yes |
| parse_config | src/config.rs:45 | pub | no |
| ... | | | |

### Enums (6)
| Name | Location | Variants |
|------|----------|----------|
| Error | src/error.rs:5 | 8 |
| Status | src/models/order.rs:5 | 4 |
| ... | | |

Read the full file on GitHub · 223 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. 2mo ago First seen · 223 lines · 51 tokens per session scan A 1be1ac481eef

Subscribe to this mod's changes

rust-symbol-analyzer is a skill published in the GitHub repository moeru-ai/auv (203 stars, last pushed 2d ago), licensed Apache-2.0. It adds 51 tokens to every session and 1,430 once invoked, about $0.0002 per session on Opus 5.5. 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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