Rust Pro Max - Backend Generator

When User Requests Rust Work

Follow this workflow for every Rust-related task:

1. Analyze Requirements

Extract from the user's request:

• Project type: REST API, CLI, microservice, library, WebAssembly, Embedded
• Domain: web, database, gRPC, messaging
• Scale: small project, enterprise, library

Default Stack (always use unless user specifies otherwise)

Project structure: Domain-driven layout:

src/main.rs
src/lib.rs
src/config/      — env config & setup
src/domain/      — structs + traits
src/handlers/    — HTTP handlers (Axum)
src/services/    — business logic
src/repository/  — SQLx queries and DB access
migrations/      — SQL migration files

2. Generate Architecture System (REQUIRED for new projects)

python3 skills/rust/scripts/search.py "<project description>" --arch-system -p "ProjectName"

This gives you: architecture, crates, error strategy, patterns, structure, testing approach.

3. Supplement with Domain Searches

Based on the project needs, search relevant domains:

# Patterns for the task
python3 skills/rust/scripts/search.py "builder pattern newtype" --domain pattern

# Crates recommendations
python3 skills/rust/scripts/search.py "web api authentication" --domain crate

# Concurrency patterns
python3 skills/rust/scripts/search.py "tokio channel pipeline" --domain concurrency

# Performance tips
python3 skills/rust/scripts/search.py "zero copy clone" --domain perf

# Testing patterns
python3 skills/rust/scripts/search.py "mocking traits" --domain test

4. Stack Guidelines

If using a specific framework/stack:

python3 skills/rust/scripts/search.py "middleware authentication" --stack web-axum
python3 skills/rust/scripts/search.py "clap subcommands config" --stack cli
python3 skills/rust/scripts/search.py "connection pool sqlx" --stack database

5. Implement

Apply all recommendations from the search results:

• Use recommended architecture and project structure
• Apply patterns (Builder, Newtype, Typestate, etc.)
• Follow error handling strategy (thiserror vs anyhow)
• Implement proper concurrency patterns with tokio
• Add tests using proper mocking and standard #[test]

6. Always Generate Docker Files

Every web project MUST include these files:

Dockerfile (multi-stage build):

# Builder stage
FROM rust:1.80-alpine AS builder
WORKDIR /app
RUN apk add --no-cache musl-dev
COPY Cargo.toml Cargo.lock ./
# Dummy build to cache dependencies
RUN mkdir src && echo "fn main() {}" > src/main.rs && cargo build --release && rm -rf src
COPY src ./src
COPY migrations ./migrations
RUN cargo build --release

# Runtime stage
FROM alpine:3.20
RUN apk add --no-cache ca-certificates tzdata
COPY --from=builder /app/target/release/app /usr/local/bin/app
COPY migrations /app/migrations
WORKDIR /app
EXPOSE 8080
CMD ["app"]

Pre-Delivery Checklist

Before delivering Rust code, verify:

• [ ] cargo check passes
• [ ] cargo clippy -- -D warnings catches no issues
• [ ] cargo test passes
• [ ] No .unwrap() or .expect() used in production paths (use ? operator)
• [ ] Appropriate borrowing vs owning used where applicable
• [ ] Types are separated into DTOs vs Domain models
• [ ] Error domains handled via Enums with #[derive(Error)] (thiserror)
• [ ] Asynchronous bounds correctly handled

Quick Domain Reference

Resources

• scripts/: BM25 search engine, architecture system generator
• data/: 14 domains and 11 stacks with curated Rust entries