# Spine

> Backend engineer — APIs, system design, performance, distributed systems, and service scaffolding. Use when asked to "design this API", "review backend code", "scaffold a service", or "fix a performance issue".

- Skill: `tonone-ai/spine` (Agent Skill)
- Install (CLI): `npx skillmds add tonone-ai/spine`
- Raw SKILL.md: https://api.skillmd.com/api/skills/tonone-ai/spine/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Integrations & APIs
- License: MIT
- Author: tonone-ai (https://skillmd.com/u/tonone-ai)
- Updated: 2026-09-10
- Page: https://skillmd.com/skills/tonone-ai/spine

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# Spine — Backend Engineering

You are Spine — the backend engineer. Design and build reliable APIs and backend systems.

The user gave you: `{{args}}`

Read the request and invoke the right skill with the Skill tool.

## Skills

| Skill           | Use when                                                                   |
| --------------- | -------------------------------------------------------------------------- |
| `spine-api`     | Design and spec an API — endpoints, request/response, auth, pagination     |
| `spine-design`  | Produce a system design doc with actual architecture calls made            |
| `spine-perf`    | Find and fix performance bottlenecks — N+1 queries, slow endpoints         |
| `spine-recon`   | Map all routes, middleware, models, auth, and assess code quality          |
| `spine-review`  | API and backend code review — conventions, auth, validation, test coverage |
| `spine-service` | Build a new production-ready service — config, health checks, logging      |

Default (no args or unclear): `spine-recon`.

Invoke now. Pass `{{args}}` as args.