# io.github.Dave-London/cargo (npm · @paretools/cargo)

Structured Rust cargo operations (build, test, clippy) as typed JSON.

- Trust score: 79/100 (medium)
- Change this week: −13
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- npm · `@paretools/cargo`: 79/100 (this document), [markdown](https://verifymcp.io/servers/dave-london-cargo/paretools-cargo.md), [page](https://verifymcp.io/servers/dave-london-cargo/paretools-cargo)

## Channel facts

- Registry: `npm`
- Package: `@paretools/cargo`
- Version: `0.7.1`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Supply Chain Security**: 87/100
  - No malware found by supply-chain analysis.
  - Only part of the dependency tree could be resolved (95 of 99), so this covers what we could see, not the whole tree.
  - No install/post-install scripts declared.
  - Only part of the dependency tree could be resolved (95 of 99), so this covers what we could see, not the whole tree.
- **Provenance & Transparency**: 97/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to Dave-London/Pare).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 4 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 77/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 1153 tokens (~104/item across 11 items; 11 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 23/100
  - Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add dave-london-cargo -- npx -y @paretools/cargo
```

### Codex

```bash
codex mcp add dave-london-cargo -- npx -y @paretools/cargo
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "dave-london-cargo": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@paretools/cargo"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add dave-london-cargo --command npx --arg -y --arg @paretools/cargo
```

### Hermes

```yaml
mcp_servers:
  dave-london-cargo:
    command: "npx"
    args: ["-y", "@paretools/cargo"]
```

### Other

```json
{
  "mcpServers": {
    "dave-london-cargo": {
      "command": "npx",
      "args": [
        "-y",
        "@paretools/cargo"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-03 (score 79, +3)

- [functional improvement] Stability: unverified → 0.23

### 2026-08-02 (score 76, +40)

- [security improvement] Known CVEs: unverified → partial
- [security improvement] Install scripts: unverified → pass
- [security improvement] Provenance: unverified → pass
- [security improvement] Malware scan: unverified → pass
- [security] The attested source repository moved: Dave-London/Pare
- [functional improvement] Maintenance: unverified → pass
- [functional improvement] Dependency health: unverified → partial
- [functional improvement] License: unverified → pass
- [functional] Licence: MIT

### 2026-08-01 (score 36, +31)

- [security] Stability: Stability not yet verified: not enough scan history yet (needs a 30-day window).
- [functional improvement] MCP protocol: unverified → pass
- [functional improvement] Tool coverage: unverified → 100

### 2026-07-31 (score 5, −35)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 40, −52)

- [security regression] Provenance: pass → unverified
- [security regression] Known CVEs: partial → unverified
- [security regression] Malware scan: pass → unverified
- [security regression] Install scripts: pass → unverified
- [security] The attested source repository moved: Dave-London/Pare
- [functional regression] License: pass → unverified
- [functional regression] Dependency health: partial → unverified
- [functional regression] Maintenance: pass → unverified
- [functional] Licence: MIT

### 2026-07-27 (score 92, +35)

- [security improvement] GHSA-frvp-7c67-39w9 no longer affects this package
- [security improvement] Known CVEs: fail → partial
- [functional improvement] Tool coverage: unverified → 100
- [functional] First check of Tool coverage: 100
- [functional] First check of Tool coverage: 100
- [functional] First check of Schema quality: pass
- [functional] First check of Schema quality: excellent
- [functional] First check of Schema quality: fail

### 2026-07-26 (score 57)

First indexed and scored.

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

## MCP tools (11)

### `build` (~87 tokens)

Cargo Build

Runs cargo build and returns structured diagnostics (file, line, code, severity, message). Use instead of running `cargo build` in the terminal.

Input parameters:

- `compact` (boolean): Auto-compact when structured output exceeds raw CLI tokens. Set false to always get full schema.
- `path` (string): Project root path (default: cwd)
- `release` (boolean): Build in release mode

Output parameters:

- `diagnostics` (array)
- `errors` (number)
- `success` (boolean)
- `total` (number)
- `warnings` (number)

### `test` (~87 tokens)

Cargo Test

Runs cargo test and returns structured test results (name, status, pass/fail counts). Use instead of running `cargo test` in the terminal.

Input parameters:

- `compact` (boolean): Auto-compact when structured output exceeds raw CLI tokens. Set false to always get full schema.
- `filter` (string): Test name filter pattern
- `path` (string): Project root path (default: cwd)

Output parameters:

- `failed` (number)
- `ignored` (number)
- `passed` (number)
- `success` (boolean)
- `tests` (array)
- `total` (number)

### `clippy` (~70 tokens)

Cargo Clippy

Runs cargo clippy and returns structured lint diagnostics. Use instead of running `cargo clippy` in the terminal.

Input parameters:

- `compact` (boolean): Auto-compact when structured output exceeds raw CLI tokens. Set false to always get full schema.
- `path` (string): Project root path (default: cwd)

Output parameters:

- `diagnostics` (array)
- `errors` (number)
- `total` (number)
- `warnings` (number)

### `run` (~114 tokens)

Cargo Run

Runs a cargo binary and returns structured output (exit code, stdout, stderr). Use instead of running `cargo run` in the terminal.

Input parameters:

- `args` (array): Arguments to pass to the binary (after --)
- `compact` (boolean): Auto-compact when structured output exceeds raw CLI tokens. Set false to always get full schema.
- `package` (string): Package to run in a workspace
- `path` (string): Project root path (default: cwd)
- `release` (boolean): Run in release mode

Output parameters:

- `exitCode` (number)
- `stderr` (string)
- `stdout` (string)
- `success` (boolean)

### `add` (~180 tokens)

Cargo Add

Adds dependencies to a Rust project and returns structured output. Use instead of running `cargo add` in the terminal. WARNING: Adding crates downloads and compiles third-party code which may include build scripts (build.rs). Only add trusted crates. Use dryRun to preview changes before committing.

Input parameters:

- `compact` (boolean): Auto-compact when structured output exceeds raw CLI tokens. Set false to always get full schema.
- `dev` (boolean): Add as dev dependency (--dev)
- `dryRun` (boolean): Preview what would be added without modifying Cargo.toml (--dry-run)
- `features` (array): Features to enable (e.g. ["derive", "full"])
- `packages` (array, required): Packages to add (e.g. ["serde", "tokio@1.0"])
- `path` (string): Project root path (default: cwd)

Output parameters:

- `added` (array)
- `success` (boolean)
- `total` (number)

### `remove` (~93 tokens)

Cargo Remove

Removes dependencies from a Rust project and returns structured output. Use instead of running `cargo remove` in the terminal.

Input parameters:

- `compact` (boolean): Auto-compact when structured output exceeds raw CLI tokens. Set false to always get full schema.
- `dev` (boolean): Remove from dev dependencies (--dev)
- `packages` (array, required): Package names to remove
- `path` (string): Project root path (default: cwd)

Output parameters:

- `removed` (array)
- `success` (boolean)
- `total` (number)

### `fmt` (~82 tokens)

Cargo Fmt

Checks or fixes Rust formatting and returns structured output. Use instead of running `cargo fmt` in the terminal.

Input parameters:

- `check` (boolean): Check only without modifying files (--check)
- `compact` (boolean): Auto-compact when structured output exceeds raw CLI tokens. Set false to always get full schema.
- `path` (string): Project root path (default: cwd)

Output parameters:

- `files` (array)
- `filesChanged` (number)
- `success` (boolean)

### `doc` (~99 tokens)

Cargo Doc

Generates Rust documentation and returns structured output with warning count. Use instead of running `cargo doc` in the terminal.

Input parameters:

- `compact` (boolean): Auto-compact when structured output exceeds raw CLI tokens. Set false to always get full schema.
- `noDeps` (boolean): Skip building documentation for dependencies (--no-deps)
- `open` (boolean): Open docs in browser after generating
- `path` (string): Project root path (default: cwd)

Output parameters:

- `success` (boolean)
- `warnings` (number)

### `check` (~93 tokens)

Cargo Check

Runs cargo check (type check without full build) and returns structured diagnostics. Faster than build for error checking. Use instead of running `cargo check` in the terminal.

Input parameters:

- `compact` (boolean): Auto-compact when structured output exceeds raw CLI tokens. Set false to always get full schema.
- `package` (string): Package to check in a workspace
- `path` (string): Project root path (default: cwd)

Output parameters:

- `diagnostics` (array)
- `errors` (number)
- `success` (boolean)
- `total` (number)
- `warnings` (number)

### `update` (~95 tokens)

Cargo Update

Updates dependencies in the lock file. Optionally updates a single package. Use instead of running `cargo update` in the terminal.

Input parameters:

- `compact` (boolean): Auto-compact when structured output exceeds raw CLI tokens. Set false to always get full schema.
- `package` (string): Specific package to update (e.g. 'serde'). Omit to update all.
- `path` (string): Project root path (default: cwd)

Output parameters:

- `output` (string)
- `success` (boolean)

### `tree` (~97 tokens)

Cargo Tree

Displays the dependency tree for a Rust project. Use instead of running `cargo tree` in the terminal.

Input parameters:

- `compact` (boolean): Auto-compact when structured output exceeds raw CLI tokens. Set false to always get full schema.
- `depth` (number): Maximum depth of the dependency tree to display
- `package` (string): Focus on a specific package in the tree
- `path` (string): Project root path (default: cwd)

Output parameters:

- `packages` (number)
- `tree` (string)

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/dave-london-cargo/paretools-cargo#diagnostics

## Score history

- 2026-08-03: 79
- 2026-08-02: 76
- 2026-08-01: 36
- 2026-07-31: 5
- 2026-07-30: 40
- 2026-07-28: 92
- 2026-07-27: 92
- 2026-07-26: 57

## Links

- npm package: https://www.npmjs.com/package/@paretools/cargo
- Socket report: https://socket.dev/npm/package/@paretools/cargo
- Repository: https://github.com/Dave-London/Pare
- Changelog RSS feed: https://verifymcp.io/servers/dave-london-cargo/paretools-cargo/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/dave-london-cargo/paretools-cargo/changelog.json
- HTML version of this page: https://verifymcp.io/servers/dave-london-cargo/paretools-cargo