backend-patterns SKILL.md skillA
backend-patterns from affaan-m/ecc is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add affaan-m/ecc/backend-patterns@git:20260918.c752aacPins git:20260918.c752aac in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- affaan-m/ecc
- Path
.agents/skills/backend-patterns/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260918.c752aac, committed Sep 18, 2026
- First version recorded
- Feb 25, 2026
- Size
- 13,932 bytes
- Repository stars
- 284,510
- License
- MIT
Backend architecture patterns, API design, database optimization, and server-side best practices for Node.js, Express, and Next.js API routes. Use when building or reviewing Node.js, Express, or Next.js API routes and their data access.
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
# Backend Development Patterns
Backend architecture patterns and best practices for scalable server-side applications.
## When to Activate
- Designing REST or GraphQL API endpoints
- Implementing repository, service, or controller layers
- Optimizing database queries (N+1, indexing, connection pooling)
- Adding caching (Redis, in-memory, HTTP cache headers)
- Setting up background jobs or async processing
- Structuring error handling and validation for APIs
- Building middleware (auth, logging, rate limiting)
## API Design Patterns
### RESTful API Structure
```typescript
// PASS: Resource-based URLs
GET /api/markets # List resources
GET /api/markets/:id # Get single resource
POST /api/markets # Create resource
PUT /api/markets/:id # Replace resource
PATCH /api/markets/:id # Update resource
DELETE /api/markets/:id # Delete resource
// PASS: Query parameters for filtering, sorting, pagination
GET /api/markets?status=active&sort=volume&limit=20&offset=0
```
### Repository Pattern
```typescript
// Abstract data access logic
interface MarketRepository {
…Read the whole file at its exact version.
How to install
mdr add affaan-m/ecc/backend-patterns@sha256:d4d3c9c54b5bf5afThe line at the top of this page pins the label git:20260918.c752aac, 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_kcax357mkfrimvza)
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Versions
The registry has recorded 5 versions of this file, between Feb 25, 2026 and Sep 18, 2026, about one every 51 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260918.c752aac latest | 2026-09-18 | c752aac | 13,932 B | A | view · diff |
| git:20260812.d29cf65 | 2026-08-12 | d29cf65 | 13,919 B | A | view · diff |
| git:20260429.d89f8d8 | 2026-04-29 | d89f8d8 | 13,825 B | A | view · diff |
| git:20260330.866d9eb | 2026-03-30 | 866d9eb | 13,837 B | A | view · diff |
| git:20260225.d70bab8 | 2026-02-25 | d70bab8 | 13,825 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 (13932 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
affaan-m/ecc · 284,510 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_kcax357mkfrimvza GET https://markdownregistry.com/api/v1/resolve?ref=affaan-m/ecc/backend-patterns GET https://markdownregistry.com/api/v1/blob/d4d3c9c54b5bf5af3c1711fe16ef28db1538d4c272cfa0e4420da60c368fef02
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.