oRPC - Typesafe APIs Made Simple 🪄

Documentation

You can read the documentation here.

Packages

Core

| Package | Purpose | Docs | | -------------------------------------------------------------- | -------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | @orpc/contract | Define API contract as the single source of truth. | Procedure Contract, Contract Router, Implementation, Generate from OpenAPI | | @orpc/server | Build APIs or implement contracts. | Procedure, Router, Middleware, Context, RPC Handler | | @orpc/client | Consume APIs with end-to-end type safety. | Client-Side Clients, Server-Side Clients, RPC Link, Error Handling | | @orpc/openapi | Add OpenAPI compatibility to APIs. | OpenAPI Handler, OpenAPI Link, Specification, Scalar |

Schema validation

| Package | Purpose | Docs | | ------------------------------------------------------------ | ---------------------------------------------------------- | ----------------------------------------------------- | | @orpc/zod | JSON Schema converter for Zod. | Zod | | @orpc/valibot | JSON Schema converter for Valibot. | Valibot | | @orpc/arktype | JSON Schema converter for ArkType. | ArkType |

Built-in features

| Package | Purpose | Docs | | -------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------- | | @orpc/publisher | Pub/Sub with memory, Redis, and Upstash adapters. | Publisher | | @orpc/ratelimit | Rate limiting with memory, Redis, and Upstash adapters. | Rate Limit | | @orpc/experimental-lock | Locking with memory, Redis, and Upstash adapters. | Lock | | @orpc/hibernation | Leverage Hibernation APIs like Cloudflare's Hibernation WebSocket. | Hibernation | | @orpc/json-schema | Smart coercion for OpenAPI requests. | Smart Coercion |

Framework & ecosystem integrations

| Package | Purpose | Docs | | ------------------------------------------------------------------------------------ | ----------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | @orpc/next | Integrate with Next.js Server Functions. | Next.js | | @orpc/ai-sdk | Turn contracts and procedures into AI SDK tools. | AI SDK | | @orpc/tanstack-query | Integrate with TanStack Query. | TanStack Query | | @orpc/pinia-colada | Integrate with Pinia Colada. | Pinia Colada | | @orpc/swr | Integrate with SWR. | SWR | | @orpc/experimental-msw | Mock procedures with Mock Service Worker. | MSW | | @orpc/experimental-effect | Integrate with Effect. | Effect | | @orpc/nest | Implement your contract with NestJS. | NestJS | | @orpc/node | Node.js plugins for static file serving and large uploads. | Static File, Tmp File Upload, Batch Response Compression | | @orpc/bun | Adapters for Bun's Redis. | Publisher, Rate Limit, Lock | | @orpc/cloudflare | Adapters for Cloudflare Workers. | Publisher, Rate Limit, Lock, Traces | | @orpc/trpc | Reuse existing tRPC routers within oRPC. | tRPC |

Observability

| Package | Purpose | Docs | | ------------------------------------------------------------------------ | ---------------------------------------------------------------------------------- | ----------------------------------------------------------------- | | @orpc/opentelemetry | Integrate with OpenTelemetry for distributed tracing. | OpenTelemetry | | @orpc/pino | Integrate with Pino for logging. | Pino | | @orpc/evlog | Integrate with Evlog for logging. | Evlog |

Sponsors

Like what we build over at middleapi? You can help keep it going through GitHub Sponsors or Open Collective. Every bit helps! 🚀

ScreenshotOne.com The screenshot API for developers

Yuzu We're hiring NYC based engineers

MisskeyHQ Decentralized microblogging SNS born on Earth

Special Sponsors

Guillermo Rauch

Premium Sponsors

Nexa

Organization Sponsors

LN Markets

Sponsors

Reece McDonald	あわわわとーにゅ	nk	supastarter	herrfugbaum	Ryota Murakami
David Cramer	Valerii Petryniak	Valerii Strilets	Kyle Mistele	christ12938	Ryan Soderberg
shota	Ellis Driscoll	Hoang Nguyen	Orestis Ioannou	Stefan Smiljkovic

Backers

David Walsh	IPv4Addr	Robbe Vaes	Aidan Sunbury	soonoo	Kevin Porten	Denis
Christopher Kapic	Tom Ballinger	Sam	Titoine	Igor Makowski	hanayashiki	Lev Dubinets
Kelly Peilin Chan	Guy Ariely	PaulSenon	Shotaro Nakamura	Alex	Andrey Gubanov

With thanks to 38 past sponsors who helped get oRPC here.

References

oRPC is inspired by existing solutions that prioritize type safety and developer experience. Special acknowledgments to:

• tRPC: For pioneering the concept of end-to-end type-safe RPC and influencing the development of type-safe APIs.
• ts-rest: For its emphasis on contract-first development and OpenAPI integration, which have greatly inspired oRPC's feature set.

License

Distributed under the MIT License. See LICENSE for more information.