orpc

> The skill is based on oRPC v1.13.13, generated at 2026-03-30. oRPC is a TypeScript-first RPC framework for building end-to-end typesafe APIs. It provides procedure-based API definitions with input/output validation (Zod, Valibot, ArkType), middleware chains, type-safe error handling, OpenAPI 3.1.1 spec generation, streaming via Event Iterators (SSE), contract-first development, and integrations with TanStack Query, AI SDK, React Server Actions, and more. ## Core References | Topic | Description | Reference | |-------|-------------|-----------| | Procedure | Defining procedures with validation, middleware, and handlers | [core-procedure](references/core-procedure.md) | | Router | Router composition, lazy loading, and type inference | [core-router](references/core-router.md) | | Middleware | Context injection, guards, input/output interception, lifecycle hooks | [core-middleware](references/core-middleware.md) | | Context | Type-safe dependency injection with initial and execution context | [core-context](references/core-context.md) | | Error Handling | ORPCError, type-safe errors, HTTP status mappings, client error handling | [core-error-handling](references/core-error-handling.md) | ## Features ### Handlers & Transport | Topic | Description | Reference | |-------|-------------|-----------| | Handlers | RPCHandler and OpenAPIHandler setup, data types, lifecycle | [features-handler](references/features-handler.md) | | Client | RPCLink, OpenAPILink, DynamicLink, server/client-side clients | [features-client](references/features-client.md) | | OpenAPI | Spec generation, routing, input/output structure, operation metadata | [features-openapi](references/features-openapi.md) | ### Real-time & Streaming | Topic | Description | Reference | |-------|-------------|-----------| | Event Iterator | Streaming/SSE with async generators, EventPublisher, resume support | [features-event-iterator](references/features-event-iterator.md) | ### Framework Integration | Topic | Description | Reference | |-------|-------------|-----------| | Server Action | React Server Actions with useServerAction, optimistic updates, forms | [features-server-action](references/features-server-action.md) | | Contract First | Define, implement, and convert contracts for API-first development | [features-contract-first](references/features-contract-first.md) | | TanStack Query | Query/mutation options, hydration, streaming queries, key management | [features-tanstack-query](references/features-tanstack-query.md) | ## Plugins | Topic | Description | Reference | |-------|-------------|-----------| | Server Plugins | CORS, batch, body limit, CSRF, compression, strict GET, rethrow, response/request headers | [plugins-server](references/plugins-server.md) | | Client Plugins | Retry, batch, dedupe, retry-after, request/response validation | [plugins-client](references/plugins-client.md) | ## Integrations | Topic | Description | Reference | |-------|-------------|-----------| | AI SDK | Vercel AI SDK streaming, tool creation, chat patterns | [integrations-ai-sdk](references/integrations-ai-sdk.md) | | Observability | OpenTelemetry instrumentation, Pino logging | [integrations-observability](references/integrations-observability.md) | ## Best Practices & Advanced | Topic | Description | Reference | |-------|-------------|-----------| | Best Practices | Middleware dedup, SSR optimization, testing/mocking, metadata | [best-practices-patterns](references/best-practices-patterns.md) | | Custom Plugins | Building handler and link plugins with interceptors | [advanced-custom-plugins](references/advanced-custom-plugins.md) | | Validation Errors | Customizing validation error responses | [advanced-validation-errors](references/advanced-validation-errors.md) | | Helpers | Rate limiting, publisher, cookie, encryption, signing, form data | [advanced-helpers](references/advanced-helpers.md) |