rust-ecosystem-crates SKILL.md skillA
rust-ecosystem-crates from fusengine/agents is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add fusengine/agents/rust-ecosystem-crates@git:20260904.5f1d30fPins git:20260904.5f1d30f in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- fusengine/agents
- Path
plugins/rust-expert/skills/rust-ecosystem-crates/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260904.5f1d30f, committed Sep 4, 2026
- First version recorded
- Jul 5, 2026
- Size
- 5,383 bytes
- Repository stars
- 36
- License
- MIT
Use when choosing crates for a Rust project — serialization, CLI, async runtime, web, database, HTTP client, error handling, observability. Not for API usage details of an already-chosen crate.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
<objective> This skill provides a domain-to-crate decision map of the de-facto 2026 Rust ecosystem standards — serde for serialization, clap for CLI parsing, tokio for async, axum for web, sqlx/sea-orm/diesel for database access, thiserror/anyhow for error handling split by library vs application, and tracing for observability — plus the selection criteria behind each choice. It also covers matching an existing project's Cargo.toml conventions before introducing a competing crate, and the version-verification discipline (never trust a remembered patch number; confirm current versions on crates.io/Context7/Exa). Out of scope: once a crate is chosen, its detailed API usage belongs to the matching domain skill (rust-web-backend, rust-async-concurrency, rust-error-handling) or direct docs verification (docs.rs/crates.io → Context7 → Exa). </objective> # Rust Ecosystem & Crates ## Agent Workflow (MANDATORY) Before ANY crate selection, spawn 3 agents in parallel, one `Agent` call each with a `name`: 1. **fuse-ai-pilot:explore-codebase** - Read existing `Cargo.toml` to match established choices …
Read the whole file at its exact version.
How to install
mdr add fusengine/agents/rust-ecosystem-crates@sha256:8b033e5ff983c2a2The line at the top of this page pins the label git:20260904.5f1d30f, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_5uinsl5k6hsj7tkk)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Jul 5, 2026 and Sep 4, 2026, about one every 20 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260904.5f1d30f latest | 2026-09-04 | 5f1d30f | 5,383 B | A | view · diff |
| git:20260729.3b91eed | 2026-07-29 | 3b91eed | 5,354 B | A | view · diff |
| git:20260715.2c1b77f | 2026-07-15 | 2c1b77f | 4,690 B | A | view · diff |
| git:20260705.8c2f9bc | 2026-07-05 | 8c2f9bc | 4,690 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (5383 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
fusengine/agents · 36 stars · license MIT · pushed 2026-10-30 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_5uinsl5k6hsj7tkk GET https://markdownregistry.com/api/v1/resolve?ref=fusengine/agents/rust-ecosystem-crates GET https://markdownregistry.com/api/v1/blob/8b033e5ff983c2a2a628f75d40ac6fc3587adbdcef8a8adeedbad7a72a5f1490
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.