rust-web-backend skillA
rust-web-backend is agent-read markdown (skill) from fusengine/agents: Use when building a REST/HTTP backend in Rust — axum routing, extractors, shared state, middleware, error responses, sqlx database access. Not for raw async/concurrency (rust-async-concurrency)..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
<objective>
This skill covers the 2026 standard Rust web-backend stack: axum 0.8.x routing (including
the /{id} path syntax that replaced /:id) and extractors, sharing state via State<T>,
composing tower-http middleware (trace, cors, timeout, compression), mapping domain errors
to IntoResponse instead of unwrapping in handlers, and sqlx 0.9 database access with
compile-time-checked query!/query_as! (including the .sqlx/ offline cache for CI).
It also names the honest alternatives — sea-orm for an ActiveRecord-style ORM, diesel for a
mature but synchronous alternative needing spawn_blocking — and structured observability via
tracing.
Out of scope: raw async/concurrency primitives (channels, locks, task spawning) belong to
rust-async-concurrency; cross-domain crate selection belongs to rust-ecosystem-crates.
</objective>
# Rust Web Backend
## Agent Workflow (MANDATORY)
Before building the service, spawn in parallel:
1. **fuse-ai-pilot:explore-codebase** — detect the existing router, state, and DB layer
2. **fuse-ai-pilot:research-expert** — verify current axum/sqlx APIs via Context7/Exa (axum 0.8 changed several APIs)
…Read the whole file at its exact version.
How to install
mdr add fusengine/agents/rust-web-backend@git:20260729.3b91eedmdr add fusengine/agents/rust-web-backend@sha256:c1803dec008126c7Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_pxmcj4ua6ifz42lh)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260729.3b91eed latest | 2026-07-29 | 3b91eed | 5,262 B | A | view · diff |
| git:20260705.8c2f9bc | 2026-07-05 | 8c2f9bc | 4,619 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 (5262 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 · 28 stars · license MIT · pushed 2026-09-24 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_pxmcj4ua6ifz42lh GET https://markdownregistry.com/api/v1/resolve?ref=fusengine/agents/rust-web-backend GET https://markdownregistry.com/api/v1/blob/c1803dec008126c72773f7f6a9351a4080cb63ed2ace26adec9453073056d4cc
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