Individual skill

fastify-schema-first-service

Use when building or extending a Fastify application: routes, plugins, hooks, database wiring. Not for testing: use fastify-inject-testing. Not for hardening: use fastify-production-hardening.

.devin/skills/fastify-schema-first-service/SKILL.md

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License: Apache-2.0

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# Fastify schema first service

## Contract

| Field | Bound contract |
|---|---|
| Trigger | Building or extending a Fastify application: routes, plugins, JSON Schema validation/serialization, hooks/lifecycle, decorators, content types, database wiring. |
| Authority | Reversible local: writes only Fastify application code; rollback is version control. No deployment, credential, or remote mutation. |
| Side effect | Writes Fastify application code: route handlers, plugins, schemas, hooks, decorators, content-type parsers, and database wiring. |
| Done | Routes carry request+response schemas, validation errors are schema-shaped, decorators/hooks respect encapsulation, app boots with plugins in dependency order. |

## Inputs

Required: the Fastify application entry point or the module to extend, and the target Node.js/Fastify version baseline.