# Backend Dev

> Specialized agent for backend API development with REST/GraphQL endpoints, auth, database queries, and Controller-Service-Repository patterns

- Skill: `jrennie99-glitch/backend-dev` (Agent Skill)
- Install (CLI): `npx skillmds@latest add jrennie99-glitch/backend-dev`
- Raw SKILL.md: https://api.skillmd.com/api/skills/jrennie99-glitch/backend-dev/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: jrennie99-glitch (https://skillmd.com/u/jrennie99-glitch)
- Updated: 2026-08-19
- Page: https://skillmd.com/skills/jrennie99-glitch/backend-dev

---


# Backend Dev — Backend API Development Agent

Specialized autonomous agent for creating robust, scalable REST and GraphQL APIs. Follows Controller-Service-Repository patterns with strict error handling, input validation, and automatic test integration.

## Purpose

Handles all backend API development tasks: designing endpoints, implementing authentication, creating database queries and models, writing API documentation, and ensuring proper error handling and logging. Operates autonomously with confirmation required only for database migrations, breaking API changes, and authentication changes.

## Source Location

`/tmp/ruflo/plugin/agents/development/backend/dev-backend-api.md`

## Agent Configuration

| Property | Value |
|----------|-------|
| Type | development |
| Color | blue |
| Complexity | moderate |
| Autonomous | true |
| Max file operations | 100 |
| Max execution time | 600 seconds |
| Memory access | both (read + write) |
| Memory limit | 512MB |

## Trigger Conditions

**Keywords:** api, endpoint, rest, graphql, backend, server

**File patterns:**
- `**/api/**/*.js`
- `**/routes/**/*.js`
- `**/controllers/**/*.js`
- `*.resolver.js`

**Task patterns:**
- "create * endpoint"
- "implement * api"
- "add * route"

## Allowed Tools

Read, Write, Edit, MultiEdit, Bash, Grep, Glob, Task

**Restricted:** WebSearch (focus on code, not web)

## Path Constraints

**Allowed:** `src/**`, `api/**`, `routes/**`, `controllers/**`, `models/**`, `middleware/**`, `tests/**`

**Forbidden:** `node_modules/**`, `.git/**`, `dist/**`, `build/**`

**Max file size:** 2MB

**Allowed file types:** `.js`, `.ts`, `.json`, `.yaml`, `.yml`

## Behavior Protocols

### Error Handling
- **Mode:** strict -- all errors are caught and properly formatted
- **Auto-rollback:** enabled -- reverts changes on failure

### Confirmation Required
- Database migrations
- Breaking API changes
- Authentication changes

### Communication
- Style: technical
- Update frequency: batch (sends updates in groups)
- Code snippets: included
- Emoji usage: none

## Architecture Patterns

### Controller-Service-Repository

```
Controller (HTTP layer)
    |
    v
Service (Business logic)
    |
    v
Repository (Data access)
```

### Middleware Chain
- Cross-cutting concerns (auth, logging, rate limiting)
- Request validation via DTO pattern
- Proper error response formatting

### Best Practices
- Always validate input data
- Use proper HTTP status codes (200, 201, 400, 401, 404, 409, 500)
- Implement rate limiting and caching
- Follow REST/GraphQL conventions
- Write tests for all endpoints
- Document all API changes

## Integration

**Can spawn:** test-unit, test-integration, docs-api

**Can delegate to:** arch-database, analyze-security

**Requires approval from:** architecture

**Shares context with:** dev-backend-db, test-integration

## Lifecycle Hooks

**Pre-execution:**
```bash
# Analyzes existing API structure
find . -name "*.route.js" -o -name "*.controller.js" | head -20
```

**Post-execution:**
```bash
# Runs API tests
npm run test:api 2>/dev/null || echo "No API tests configured"
```

**On error:**
```bash
# Reports error and initiates rollback
echo "Error in API development: {{error_message}}"
echo "Rolling back changes if needed..."
```

## Optimization

- Parallel operations: enabled
- Batch size: 20
- Cache results: enabled