cargo-rustc

cargo-rustc is a command for coding agents from olorehq/olore. It costs 0 tokens per session (6,465 once invoked), scanned A, original, MIT.

A Cargo command that compiles a Rust package while passing extra options to the Rust compiler. Cargo is Rust's build and dependency tool.

In plain words
What is it for?
Use it to compile one Rust library or executable with custom rustc options, selecting a target with flags such as --lib or --bin when needed.
Why use it?
It allows compiler-specific flags for the selected package target without applying those arguments to its dependencies.

Command

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 commands/olorehq/olore/cargo-rustc
Clone the repo
git clone --depth 1 https://github.com/olorehq/olore

Wrote 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.

agentmods badge for cargo-rustc

README.md
[![agentmods](https://agentmods.dev/badge/commands/olorehq/olore/cargo-rustc.svg)](https://agentmods.dev/commands/olorehq/olore/cargo-rustc)
Your own site
<a href="https://agentmods.dev/commands/olorehq/olore/cargo-rustc"><img src="https://agentmods.dev/badge/commands/olorehq/olore/cargo-rustc.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 6,465 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00000 $0.06465
Opus 5 $0.00000 $0.03232
Sonnet 5 $0.00000 $0.01293
Haiku 4.5 $0.00000 $0.00647

Measured 4d ago against content hash c09b3e4ceb5d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

cargo-rustc scanned grade A 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 4d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

See the <a href="cargo-fetch.html">cargo-fetch(1)</a> command to download dependencies before going
vault/packages/cargo/latest/contents/commands/cargo-rustc.md · 468 lines

How it starts

The opening of the file, as written. The whole thing — 468 lines — stays where its author put it; the contents beside it link to each section on GitHub.

cargo-rustc(1)

NAME

cargo-rustc --- Compile the current package, and pass extra options to the compiler

SYNOPSIS

cargo rustc [options] [-- args]

DESCRIPTION

The specified target for the current package (or package specified by -p if provided) will be compiled along with all of its dependencies. The specified args will all be passed to the final compiler invocation, not any of the dependencies. Note that the compiler will still unconditionally receive arguments such as -L, --extern, and --crate-type, and the specified args will simply be added to the compiler invocation.

See https://doc.rust-lang.org/rustc/index.html for documentation on rustc flags.

This command requires that only one target is being compiled when additional arguments are provided. If more than one target is available for the current package the filters of --lib, --bin, etc, must be used to select which target is compiled.

To pass flags to all compiler processes spawned by Cargo, use the RUSTFLAGS environment variable or the build.rustflags config value.

OPTIONS

Package Selection

By default, the package in the current working directory is selected. The -p flag can be used to choose a different package in a workspace.

Target Selection

When no target selection options are given, cargo rustc will build all binary and library targets of the selected package.

Binary targets are automatically built if there is an integration test or benchmark being selected to build. This allows an integration test to execute the binary to exercise and test its behavior. The CARGO_BIN_EXE_<name> environment variable is set when the integration test is built and run so that it can use the env macro or the var function to locate the executable.

Read the full file on GitHub · 468 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. 4d ago First seen · 468 lines · 0 tokens per session scan A c09b3e4ceb5d

Subscribe to this mod's changes

cargo-rustc is a command published in the GitHub repository olorehq/olore (103 stars, last pushed today), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 6,465 tokens. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.