pitfalls-express-api
Express API conventions and storage patterns. Use when building REST APIs, defining routes, or implementing storage interfaces. Triggers on: Express, router, API route, status code, storage interface.
Best use case
pitfalls-express-api is best used when you need a repeatable AI agent workflow instead of a one-off prompt. It is especially useful for teams working in multi. Express API conventions and storage patterns. Use when building REST APIs, defining routes, or implementing storage interfaces. Triggers on: Express, router, API route, status code, storage interface.
Express API conventions and storage patterns. Use when building REST APIs, defining routes, or implementing storage interfaces. Triggers on: Express, router, API route, status code, storage interface.
Users should expect a more consistent workflow output, faster repeated execution, and less time spent rewriting prompts from scratch.
Practical example
Example input
Use the "pitfalls-express-api" skill to help with this workflow task. Context: Express API conventions and storage patterns. Use when building REST APIs, defining routes, or implementing storage interfaces. Triggers on: Express, router, API route, status code, storage interface.
Example output
A structured workflow result with clearer steps, more consistent formatting, and an output that is easier to reuse in the next run.
When to use this skill
- Use this skill when you want a reusable workflow rather than writing the same prompt again and again.
When not to use this skill
- Do not use this when you only need a one-off answer and do not need a reusable workflow.
- Do not use it if you cannot install or maintain the related files, repository context, or supporting tools.
Installation
Claude Code / Cursor / Codex
Manual Installation
- Download SKILL.md from GitHub
- Place it in
.claude/skills/pitfalls-express-api/SKILL.mdinside your project - Restart your AI agent — it will auto-discover the skill
How pitfalls-express-api Compares
| Feature / Agent | pitfalls-express-api | Standard Approach |
|---|---|---|
| Platform Support | Not specified | Limited / Varies |
| Context Awareness | High | Baseline |
| Installation Complexity | Unknown | N/A |
Frequently Asked Questions
What does this skill do?
Express API conventions and storage patterns. Use when building REST APIs, defining routes, or implementing storage interfaces. Triggers on: Express, router, API route, status code, storage interface.
Where can I find the source code?
You can find the source code on GitHub using the link provided at the top of the page.
SKILL.md Source
# Express API Pitfalls
Common pitfalls and correct patterns for Express APIs.
## When to Use
- Building REST API routes
- Implementing storage interfaces
- Setting HTTP status codes
- Validating request bodies
- Reviewing Express API code
## Workflow
### Step 1: Verify Route Structure
Check that routes follow REST conventions.
### Step 2: Check Status Codes
Ensure correct status codes for each operation.
### Step 3: Verify Validation
Confirm input validation middleware is in place.
---
## Route Structure
```typescript
// Public routes
GET /api/resource // List
GET /api/resource/:id // Get one
// Admin routes (with auth middleware)
POST /api/admin/resource // Create (201)
PATCH /api/admin/resource/:id // Update (200)
DELETE /api/admin/resource/:id // Delete (204)
// ✅ Always validate before storage
router.post('/', validateBody(schema), async (req, res) => {
const validated = req.body; // Already validated by middleware
});
```
## Status Codes
| Operation | Success | Not Found | Invalid |
|-----------|---------|-----------|---------|
| GET | 200 | 404 | 400 |
| POST | 201 | - | 400 |
| PATCH | 200 | 404 | 400 |
| DELETE | 204 | 404 | - |
## Storage Interface Pattern
```typescript
// ✅ Define interface for all storage operations
interface IStorage {
// Strategies
getStrategies(): Promise<Strategy[]>;
getStrategy(id: string): Promise<Strategy | undefined>;
createStrategy(data: NewStrategy): Promise<Strategy>;
updateStrategy(id: string, data: Partial<Strategy>): Promise<Strategy | undefined>;
deleteStrategy(id: string): Promise<boolean>;
}
// ✅ Implement for different backends
class DbStorage implements IStorage { ... } // PostgreSQL
class MemStorage implements IStorage { ... } // Testing
```
## Background Job Patterns
```typescript
// ✅ Cleanup on process exit
const intervals: NodeJS.Timeout[] = [];
function startJob(fn: () => void, ms: number) {
const id = setInterval(fn, ms);
intervals.push(id);
return id;
}
process.on('SIGTERM', () => {
intervals.forEach(clearInterval);
process.exit(0);
});
// ✅ Handle overlapping executions
let isRunning = false;
async function scanForOpportunities() {
if (isRunning) return;
isRunning = true;
try {
await scan();
} finally {
isRunning = false;
}
}
```
## Quick Checklist
- [ ] Routes follow REST conventions
- [ ] Correct status codes returned
- [ ] Input validation on all endpoints
- [ ] Storage interface abstraction used
- [ ] Background jobs handle cleanupRelated Skills
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