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 commands/actionbook/actionbook/crate-infogit clone --depth 1 https://github.com/actionbook/actionbookWrote 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/commands/actionbook/actionbook/crate-info)<a href="https://agentmods.dev/commands/actionbook/actionbook/crate-info"><img src="https://agentmods.dev/badge/commands/actionbook/actionbook/crate-info.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 | $0.00000 | $0.00220 |
| Opus 5 | $0.00000 | $0.00110 |
| Sonnet 5 | $0.00000 | $0.00044 |
| Haiku 4.5 | $0.00000 | $0.00022 |
Grade A, and why
crate-info 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 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.
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.
What it actually says
/rust-learner:crate-info
Get information about a Rust crate including latest version, features, and changelog.
Usage
/rust-learner:crate-info <crate> [version]
Parameters
crate(required): Crate name (e.g.,tokio,serde,axum)version(optional): Specific version to look up
Examples
/rust-learner:crate-info tokio # Latest tokio info
/rust-learner:crate-info axum 0.7 # axum 0.7 features
/rust-learner:crate-info serde # serde latest features
Workflow
- Use
search_actions("lib.rs crate")to get action ID - Use
get_action_by_id()to get page selectors - Use
agent-browserto open https://lib.rs/crates/{crate} - Extract crate information and changelog
- Summarize for user
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.
- 4d ago First seen · 31 lines · 0 tokens per session scan A 03aaaf0e4ca5
crate-info is a command published in the GitHub repository actionbook/actionbook (1,586 stars, last pushed 22d ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 220 tokens. 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.
Other commands, from other repositories
add
Command "add" from paiml/rust-mcp-sdk, covering cargo pmcp add, usage, subcommands, add server and arguments.
mutation-test
Uses cargo-mutants to run mutation tests and verify test quality.
generate-docs
Generates a Rust-scoped symbol inventory to assist agents in understanding the public API surface of the workspace.
ai-daily
Generate AI daily/weekly news report from Reddit communities.
create-llms-from-source
Generate llms.txt from local Rust source code.
cache-status
Show Rust docs cache status.