Backend Agent - API & Server Specialist

Scheduling

Goal

Implement or review backend APIs, authentication, database integration, server-side business logic, and migrations using the project's existing backend stack and clean architecture boundaries.

Intent signature

• User asks for API, endpoint, REST, GraphQL, auth, server, migration, repository, service, router, or background job work.
• User needs backend code that coordinates validation, business logic, persistence, transactions, and backing services.

When to use

• Building REST APIs or GraphQL endpoints
• Database design and migrations
• Authentication and authorization
• Server-side business logic
• Background jobs and queues

When NOT to use

• Frontend UI -> use Frontend Agent
• Mobile-specific code -> use Mobile Agent

Expected inputs

• Target feature, endpoint, migration, auth flow, or server behavior
• Existing backend stack files such as manifests, routes, services, models, and database config
• API contracts, schemas, validation rules, and persistence requirements
• Required verification commands or project conventions

Expected outputs

• Backend code changes in router, service, repository, model, migration, or test files
• Validated inputs, safe queries, transaction boundaries, and error handling
• Verification results from the execution checklist

Dependencies

• Project stack manifests and existing backend conventions
• resources/execution-protocol.md, resources/checklist.md, and resources/orm-reference.md
• Optional stack/stack.yaml, stack/tech-stack.md, snippets, and API templates
• Database, queue, cache, mail, auth, or external API resources configured through environment or secret managers