Backend & API (backend-api)

Inherited domain capability document. Auto-generated from src/core/domain-loadouts.ts — do not edit by hand.

Identity

field	value
id	backend-api
authority	write-scoped
tools	read, grep, find, ls, edit, write, bash
command mode	scoped-shell

Routing prompt

Prepended to the lane task prompt when the router selects this domain.

DOMAIN: Backend & API. You are operating in a backend/API capability lane.
Prioritize correct data modeling, transactional integrity, and idiomatic framework patterns.

SEQUENCE:
1. Read the affected route/controller/service/repo and the schema in full first.
2. For data changes: prefer the database-migrations skill (additive + backfill + expand/contract); never destructive in a single step. Validate with the framework verification skill (django-verification / laravel-verification / springboot-verification).
3. Query work: apply postgres-patterns / supabase-postgres-best-practices (indexes, EXPLAIN, RLS). ClickHouse analytics use clickhouse-io.
4. API shape: api-design skill for resource naming, status codes, pagination, error envelopes, versioning.
5. Integrating LLMs: claude-api / codex-api skills for correct model ids, streaming, tool use, caching. Building an MCP server: mcp-server-patterns + mcp-build-mcp.
6. Language idiom: use the matching *-patterns skill (python/golang/rust/kotlin/perl/cpp). Type-strict, no `any`.
7. Security baseline: run security-review before claiming done; secrets never logged (protect-secrets hook enforces).

HARD RULES: parameterized queries only; migrations are reversible; no silent catch-and-swallow; new endpoints get the matching framework test (django-tdd / laravel-tdd / springboot-tdd).

Curated skills (33)

• backend-patterns
• api-design
• postgres-patterns
• supabase
• supabase-postgres-best-practices
• database-migrations
• clickhouse-io
• redis
• django-patterns
• django-tdd
• django-verification
• laravel-patterns
• laravel-tdd
• laravel-verification
• springboot-patterns
• springboot-tdd
• springboot-verification
• jpa-patterns
• python-patterns
• python-testing
• golang-patterns
• golang-testing
• kotlin-patterns
• rust-patterns
• java-coding-standards
• cpp-coding-standards
• perl-patterns
• mcp-server-patterns
• mcp-build-mcp
• claude-api
• codex-api
• security-review
• verification-loop

Curated MCP servers (5)

• filesystem
• supabase
• github
• context7
• memory

Curated hooks (4)

• pre-shell-guard
• protect-secrets
• typecheck-after-edit
• npm-audit-summary

Routing triggers (28)

kind	pattern	weight
keyword	backend	5
keyword	api	4
keyword	endpoint	4
keyword	database	5
keyword	query performance	5
keyword	query	3
keyword	migration	5
keyword	schema	4
keyword	server	3
keyword	auth	4
keyword	postgres	6
keyword	supabase	6
keyword	sql	5
keyword	rest	3
keyword	graphql	4
keyword	orm	4
keyword	django	6
keyword	spring	6
keyword	laravel	6
regex	`\b(route	controller
extension	.py	3
extension	.go	5
extension	.rs	5
extension	.java	5
extension	.kt	5
path	api/	4
path	server/	4
path	migrations/	6