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Backend rules · rules · 14 picks

Best backend CLAUDE.md rules

CLAUDE.md rule sets for backend development — APIs, databases, microservices, and server frameworks.

Curated by @heyclaude-editors Updated 2026-06-19

CLAUDE.md rule sets for backend development — APIs, databases, microservices, and server frameworks.

Compared at a glance

The top 5 picks side by side on trust, install, platform support, and disclosed notes — full rationale for each below.

FieldGo Backend & Concurrency Expert - CLAUDE.md Rules for Claude Code

A CLAUDE.md rule for Go application development: goroutine and channel concurrency, context cancellation, performance tuning, HTTP and gRPC services, database patterns, and table-driven testing.

Open dossier 		Laravel Expert - CLAUDE.md Rules for Claude Code

Transform Claude into a Laravel specialist with deep knowledge of routing, Eloquent ORM, form requests, policies, queues, and production deployment patterns.

Open dossier 		FastAPI Expert - CLAUDE.md Rules for Claude Code

Transform Claude into a FastAPI specialist with deep knowledge of async routes, Pydantic validation, dependency injection, OpenAPI, and production API patterns.

Open dossier 		PostgreSQL Expert - CLAUDE.md Rules for Claude Code

Transform Claude into a PostgreSQL specialist with deep knowledge of schema design, indexing, query planning, transactions, and production operations.

Open dossier 		Redis Expert - CLAUDE.md Rules for Claude Code

Transform Claude into a Redis specialist with deep knowledge of data structures, caching patterns, TTL strategy, pipelining, and production operations.

Open dossier
Trust
Install riskReview firstReview firstReview firstReview firstReview first
Notes Safety ✓ Privacy ✓ Safety ✓ Privacy ✓ Safety · Privacy ✓ Safety · Privacy ✓ Safety · Privacy ✓
Categoryrulesrulesrulesrulesrules
Sourcesource-backedsource-backedsource-backedsource-backedsource-backed
AuthorJSONboredjaso0n0818jaso0n0818jaso0n0818jaso0n0818
Added2025-09-162026-06-162026-06-162026-06-162026-06-16
Platforms
Claude Code
Claude Code
Claude Code
Claude Code
Claude Code
Source repo—————
Safety notes✓Guidance-only CLAUDE.md text. Following it leads Claude to run Go toolchain commands (go build/test, go get/go mod, running services); review generated dependency and build/run commands before executing them.✓Recommendations may include shell commands, package installs, or file edits; review and run any suggested changes yourself instead of applying them unverified.— missing— missing— missing
Privacy notes✓This is guidance-only CLAUDE.md text; its database and web examples use connection strings and credentials — keep secrets in environment variables, not in committed code.✓Rules reference APP_KEY, database credentials, and API tokens; store them in environment variables or a secrets manager, never in committed .env files or config defaults.✓Rules reference API keys, database URLs, and JWT secrets; store them in environment variables or a secrets manager, never in committed source files.✓Rules reference database URLs and credentials; store connection strings in environment variables or a secrets manager, never in committed application code.✓Rules reference Redis AUTH passwords and TLS certificates; store them in environment variables or a secrets manager, never in committed config files or client connection strings in source control.
Prerequisites— none listed— none listed— none listed— none listed— none listed
Install—————
Config—————
Citations
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  1. 01
    rules

    Go Backend & Concurrency Expert - CLAUDE.md Rules for Claude Code

    Go backend rule: concurrency patterns, context cancellation, performance tuning, HTTP/gRPC services, database access, and testing.

    Review firstSource-backedReview firstAdded 9mo ago
    Safety ✓ Privacy ✓
    Why it made the cut

    Go Backend & Concurrency Expert - CLAUDE.md Rules for Claude Code is included because it has safety notes present, privacy notes present, source-backed source posture.

    Reach for instead

    If this will touch credentials, local files, or production systems, inspect the upstream source first.

  2. 02
    rules

    Laravel Expert - CLAUDE.md Rules for Claude Code

    Transform Claude into a Laravel specialist covering routing, Eloquent, validation, authorization, queues, and deployment.

    Review firstSource-backedReview firstAdded 3d ago
    Safety ✓ Privacy ✓
    Why it made the cut

    Laravel Expert - CLAUDE.md Rules for Claude Code is included because it has safety notes present, privacy notes present, source-backed source posture.

    Reach for instead

    If this will touch credentials, local files, or production systems, inspect the upstream source first.

  3. 03
    rules

    FastAPI Expert - CLAUDE.md Rules for Claude Code

    Transform Claude into a FastAPI specialist covering async routes, Pydantic models, dependency injection, and OpenAPI-backed APIs.

    Review firstSource-backedReview firstAdded 3d ago
    Safety · Privacy ✓
    Why it made the cut

    FastAPI Expert - CLAUDE.md Rules for Claude Code is included because it has privacy notes present, source-backed source posture.

    Reach for instead

    If this will touch credentials, local files, or production systems, inspect the upstream source first.

  4. 04
    rules

    PostgreSQL Expert - CLAUDE.md Rules for Claude Code

    Transform Claude into a PostgreSQL specialist covering schema design, indexes, EXPLAIN plans, transactions, and safe migrations.

    Review firstSource-backedReview firstAdded 3d ago
    Safety · Privacy ✓
    Why it made the cut

    PostgreSQL Expert - CLAUDE.md Rules for Claude Code is included because it has privacy notes present, source-backed source posture.

    Reach for instead

    If this will touch credentials, local files, or production systems, inspect the upstream source first.

  5. 05
    rules

    Redis Expert - CLAUDE.md Rules for Claude Code

    Transform Claude into a Redis specialist covering key design, data types, caching, streams, pipelining, and operational safety.

    Review firstSource-backedReview firstAdded 3d ago
    Safety · Privacy ✓
    Why it made the cut

    Redis Expert - CLAUDE.md Rules for Claude Code is included because it has privacy notes present, source-backed source posture.

    Reach for instead

    If this will touch credentials, local files, or production systems, inspect the upstream source first.

  6. 06
    rules

    Ruby on Rails Expert - CLAUDE.md Rules for Claude Code

    Transform Claude into a Ruby on Rails specialist covering Active Record, controllers, validation, authorization, jobs, and deployment.

    Review firstSource-backedReview firstAdded 3d ago
    Safety · Privacy ✓
    Why it made the cut

    Ruby on Rails Expert - CLAUDE.md Rules for Claude Code is included because it has privacy notes present, source-backed source posture.

    Reach for instead

    If this will touch credentials, local files, or production systems, inspect the upstream source first.

  7. 07
    rules

    Kotlin Expert - CLAUDE.md Rules for Claude Code

    Transform Claude into a Kotlin specialist covering coroutines, null safety, data classes, sealed hierarchies, and idiomatic API design.

    Review firstSource-backedReview firstAdded 3d ago
    Safety ✓ Privacy ✓
    Why it made the cut

    Kotlin Expert - CLAUDE.md Rules for Claude Code is included because it has safety notes present, privacy notes present, source-backed source posture.

    Reach for instead

    If this will touch credentials, local files, or production systems, inspect the upstream source first.

  8. 08
    rules

    NestJS Expert - CLAUDE.md Rules for Claude Code

    Transform Claude into a NestJS specialist covering modules, DI, providers, guards, interceptors, pipes, and microservice patterns.

    Review firstSource-backedReview firstAdded 6d ago
    Safety · Privacy ✓
    Why it made the cut

    NestJS Expert - CLAUDE.md Rules for Claude Code is included because it has privacy notes present, source-backed source posture.

    Reach for instead

    If this will touch credentials, local files, or production systems, inspect the upstream source first.

  9. 09
    rules

    API Design Expert for Claude - CLAUDE.md Rules for Claude Code

    Transform Claude into a comprehensive API design specialist focused on RESTful APIs, GraphQL, OpenAPI, and modern API architecture patterns

    Review firstSource-backedReview firstAdded 9mo ago
    Safety ✓ Privacy ✓
    Why it made the cut

    API Design Expert for Claude - CLAUDE.md Rules for Claude Code is included because it has safety notes present, privacy notes present, source-backed source posture.

    Reach for instead

    If this will touch credentials, local files, or production systems, inspect the upstream source first.

  10. 10
    rules

    Django Expert - CLAUDE.md Rules for Claude Code

    Transform Claude into a Django specialist covering ORM, class-based views, DRF, auth, migrations, and deployment.

    Review firstSource-backedReview firstAdded 5d ago
    Safety ✓ Privacy ✓
    Why it made the cut

    Django Expert - CLAUDE.md Rules for Claude Code is included because it has safety notes present, privacy notes present, source-backed source posture.

    Reach for instead

    If this will touch credentials, local files, or production systems, inspect the upstream source first.

  11. 11
    rules

    Production Database Migration Safety Rules

    Review production database migrations with lock-risk checks, staged rollout, backfill controls, rollback limits, and privacy-safe evidence.

    Review firstSource-backedReview firstAdded 15d ago
    Safety ✓ Privacy ✓
    Why it made the cut

    Production Database Migration Safety Rules is included because it has safety notes present, privacy notes present, source-backed source posture.

    Reach for instead

    If this will touch credentials, local files, or production systems, inspect the upstream source first.

  12. 12
    rules

    .NET and C# Expert - CLAUDE.md Rules for Claude Code

    Reviews C# idioms, Minimal API pipeline order, EF Core include and no-tracking queries, deadlock-free await, and Testcontainers integration suites.

    Review firstSource-backedReview firstAdded 6d ago
    Safety · Privacy ✓
    Why it made the cut

    .NET and C# Expert - CLAUDE.md Rules for Claude Code is included because it has privacy notes present, source-backed source posture.

    Reach for instead

    If this will touch credentials, local files, or production systems, inspect the upstream source first.

  13. 13
    rules

    API First Dev Expert - CLAUDE.md Rules for Claude Code

    Guides schema-first API design, URL-based versioning, generated SDK clients, and Swagger UI documentation across REST, tRPC, and GraphQL services.

    Review firstSource-backedReview firstAdded 8mo ago
    Safety ✓ Privacy ✓
    Why it made the cut

    API First Dev Expert - CLAUDE.md Rules for Claude Code is included because it has safety notes present, privacy notes present, source-backed source posture.

    Reach for instead

    If this will touch credentials, local files, or production systems, inspect the upstream source first.

  14. 14
    rules

    tRPC Expert - CLAUDE.md Rules for Claude Code

    Transform Claude into a tRPC specialist covering typed routers, procedures, middleware, and React client integration patterns.

    Review firstSource-backedReview firstAdded just now
    Safety · Privacy ✓
    Why it made the cut

    tRPC Expert - CLAUDE.md Rules for Claude Code is included because it has privacy notes present, source-backed source posture.

    Reach for instead

    If this will touch credentials, local files, or production systems, inspect the upstream source first.

Missing a pick? Propose an edit to this list — every change goes through the same review queue as new entries.

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