Use when building or reviewing FaasJS backend APIs and jobs: .api.ts files, defineApi, zod params schemas, HttpError, HTTP helpers, middleware/staticHandler, .job.ts files, defineJob, typed job paths and params, enqueueJob including transaction-coupled enqueueing, cron schedulers, retries, leases, workers, discovery, and job tests.
Use when working in any FaasJS repo and no narrower FaasJS skill is already selected, or when a task spans project conventions, validation gates, security boundaries, and multiple FaasJS subsystems. For focused work, also load the relevant FaasJS skill: faasjs-project-workflow, faasjs-react-ant-design, faasjs-api-jobs, faasjs-pg, faasjs-plugins-runtime, faasjs-utils-data, or faasjs-specs.
Use when working with @faasjs/pg or PostgreSQL in FaasJS: Tables declaration merging, QueryBuilder, select aliases, parameterized sql expressions, raw SQL, numeric/decimal/bigint boundaries, transaction isolation and read-only modes, row locks, concurrency, migrations, SchemaBuilder, TableBuilder, faasjs-pg CLI, PgVitestPlugin, and database type tests.
Use when building or reviewing FaasJS plugins and runtime infrastructure: Plugin lifecycle hooks including concurrent mount and failed-mount retry behavior, InvokeData mutation, DefineApiInject module augmentation, faas.yaml plugin loading, applyConfig, logger usage, @faasjs/node-utils, loadConfig, loadDotenv, module loaders, and Node-only bootstrap code.
Use when creating, configuring, reviewing, or onboarding a FaasJS project; working with create-faas-app, vp CLI, TypeScript or Vite config, feature folders, file and naming conventions, test placement, JSDoc/comments, or complete application slice workflow.
Use when building or reviewing FaasJS React UI, especially @faasjs/ant-design pages, useFaas, useFaasStream, faas requests, CRUD screens, Table faasData, Description faasData, Form faas, conditional FormItem hidden/if behavior, drawers/modals, React hooks, shared state, and React tests.
Use when implementing, reviewing, or verifying normative FaasJS runtime behavior and compatibility for faas.yaml, staged config discovery and merge order, zero-mapping route resolution, HTTP request/response protocol envelopes, status behavior, plugin identity, concurrent mount and failed-mount retry behavior, lifecycle execution, config layering, and config-driven plugin loading.
Use when working with @faasjs/utils or FaasJS data helpers: deepMerge, streamToString, stringToStream, objectToStream, streamToObject, parseJson, parseObjectFromJson, parseArrayFromJson, parseYaml, z validation helpers, isObjectRecord, parseSchemaValue, formatSchemaError, and isPathInsideRoot.