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trpc
🧙‍♀️ Move Fast and Break Nothing. End-to-end typesafe APIs made easy.

TypeScript · 40625 stars

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bug: [Docs] Next.js Integration documentation references deprecated prefetch functions Open

🐛 bug: unconfirmed

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

trpc/trpc#7596 · 1 comment · Opened Sep 14, 2026
bug: PING sent twice when keepAlive is enabled in fastifyTRPCPlugin Open

🐛 bug: unconfirmed

Difficulty 2/5 1-3 hours Newbie friendliness 74/100

trpc/trpc#7502 · 2 comments · Opened Aug 27, 2026
bug: multipart/form-data procedures fail behind express 5 body parsers ("Failed to parse body as FormData") Open

Difficulty 3/5 1-2 days Newbie friendliness 78/100

trpc/trpc#7446 · Opened Jul 26, 2026
wsLink: AbortSignal on operations is ignored — abort does not cancel in-flight requests or subscriptions Open

Difficulty 3/5 1-2 days Newbie friendliness 74/100

trpc/trpc#7439 · Opened Jul 20, 2026
feat: defered execution of requests. Respond to client early, but continue handling the request Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

trpc/trpc#7436 · Opened Jul 17, 2026
Enhancement: middleware context type should be inferred from multiple middlewares Open

Difficulty 5/5 Over a week Newbie friendliness 42/100

trpc/trpc#7378 · 1 comment · Opened May 16, 2026
feat: add server gcTime/cacheTime Infinity safeguard for SSR query caches Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

trpc/trpc#7342 · 3 reactions · Opened Apr 19, 2026
tRPC v11 useQuery returns stale data after mutation invalidation with optimistic updates in Next.js App Router Open

🐛 bug: unconfirmed

Difficulty 3/5 1-2 days Newbie friendliness 55/100

trpc/trpc#7339 · 1 comment · Opened Apr 16, 2026
feat: Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

trpc/trpc#7266 · 2 comments · 1 reaction · Opened Mar 19, 2026
feat: ReactQueryOptions doesnt infer select from data selectors Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

trpc/trpc#7183 · Opened Feb 22, 2026
bug: when `serializer` in `httpLink` can not return `FormData`, even though tRPC can serialize it when using in `input` directly Open

✅ accepted-PRs-welcome

Difficulty 5/5 Over a week Newbie friendliness 45/100

trpc/trpc#7180 · 5 comments · 4 reactions · Opened Feb 21, 2026
feat: unify client api with caller api Open

Difficulty 5/5 Over a week Newbie friendliness 28/100

trpc/trpc#7091 · 1 comment · Opened Jan 5, 2026
feat: Controlling retry behavior of `useSubscription` Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

trpc/trpc#7064 · 3 comments · 1 reaction · Opened Dec 20, 2025
feat: Official tRPC Testing Harness Package Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

trpc/trpc#7030 · 2 comments · 2 reactions · Opened Dec 2, 2025
feat: OpenTelemetry-Based Observability Hooks for Procedures Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

trpc/trpc#7022 · 3 comments · 5 reactions · Opened Nov 18, 2025
feat: first-class offline persistence helpers for tRPC React Query integrations Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

trpc/trpc#7021 · 1 comment · 3 reactions · Opened Nov 18, 2025
feat: allow users to customize http response more Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

trpc/trpc#6999 · Opened Nov 6, 2025
bug: Error when removing baseUrl - unstable-core-do-not-import type issue Open

🐛 bug: unconfirmed

Difficulty 3/5 1-2 days Newbie friendliness 45/100

trpc/trpc#6998 · 2 comments · Opened Nov 6, 2025
bug: Unable to infer `Prisma.JsonValue` properly, TypeScript says Type instantiation is excessively deep and possibly infinite Open

⏮ needs reproduction 🐛 bug: unconfirmed

Difficulty 4/5 3-5 days Newbie friendliness 35/100

trpc/trpc#6997 · 11 comments · Opened Nov 5, 2025
bug: Unstable streaming responses with httpBatchStreamLink on React Native / Expo Open

🐛 bug: unconfirmed

Difficulty 4/5 3-5 days Newbie friendliness 35/100

trpc/trpc#6996 · 3 comments · 1 reaction · Opened Nov 5, 2025
feat: Bind return type of a procedure to the input type of the `output` schema Open

✅ accepted-PRs-welcome

Difficulty 4/5 3-5 days Newbie friendliness 35/100

trpc/trpc#6978 · 8 comments · 1 reaction · Opened Oct 18, 2025
bug: onError not reporting original error Open

⏮ needs reproduction ⏳ close if no activity 🐛 bug: unconfirmed

Difficulty 4/5 3-5 days Newbie friendliness 35/100

trpc/trpc#6977 · 2 comments · Opened Oct 17, 2025
feat: support WebTransport Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

trpc/trpc#6971 · 1 comment · 1 reaction · Opened Oct 3, 2025
bug: Server Closed Subscriptions Don't Update Websocket Client Connection State Open

🐛 bug

trpc/trpc#6962 · 5 comments · 1 assignee · Opened Sep 24, 2025
feat: support using fetchEventSource for subscriptions Open

✅ accepted-PRs-welcome

Difficulty 4/5 3-5 days Newbie friendliness 52/100

trpc/trpc#6950 · 7 comments · Opened Sep 17, 2025
feat: Distinguish handled and unhandled exceptions Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

trpc/trpc#6947 · 3 comments · 1 reaction · Opened Sep 14, 2025
feat: customize lastEventId input field name Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

trpc/trpc#6936 · 1 comment · Opened Sep 13, 2025
docs: No docs for procedure.subscribe() Open

📚 documentation / examples

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

trpc/trpc#6935 · 1 comment · 1 reaction · Opened Sep 12, 2025
bug: ReadableStream uploading is not supported on safari Open

⏮ needs reproduction 🐛 bug: unconfirmed 🙋‍♂️ help wanted

Difficulty 4/5 3-5 days Newbie friendliness 35/100

trpc/trpc#6895 · 1 comment · Opened Aug 18, 2025
feat: overwrite input in middleware Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

trpc/trpc#6892 · 1 comment · Opened Aug 14, 2025
feat: tanstack db adapter Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

trpc/trpc#6891 · 21 reactions · Opened Aug 13, 2025
feat: extending procedurebuilder with named functions Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

trpc/trpc#6882 · Opened Aug 7, 2025
feat: client subscriber gets an AsyncIterable Open

✅ accepted-PRs-welcome

Difficulty 4/5 3-5 days Newbie friendliness 55/100

trpc/trpc#6868 · 4 comments · Opened Jul 18, 2025
feat: different transformers between queries and mutations Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

trpc/trpc#6867 · Opened Jul 18, 2025
docs: add upgrade path abortOnUnmount @trpc/tanstack-react-query Open

📚 documentation / examples

Difficulty 3/5 1-2 days Newbie friendliness 42/100

trpc/trpc#6864 · Opened Jul 16, 2025
Bug: useInfiniteQuery causes 400 Bad Request after .invalidate() due to auto-injected cursor: undefined Open

🐛 bug: unconfirmed

Difficulty 4/5 3-5 days Newbie friendliness 28/100

trpc/trpc#6862 · Opened Jul 16, 2025
feat: AppRouter Type Generation Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

trpc/trpc#6835 · 3 comments · 7 reactions · Opened Jun 25, 2025
feat: custom type-safe errors Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

trpc/trpc#6832 · 11 comments · 2 reactions · Opened Jun 22, 2025
bug: `httpBatchStreamLink` responses use wrong `content-type` header (`application/json`) Open

✅ accepted-PRs-welcome 🐛 bug

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

trpc/trpc#6819 · 4 comments · Opened Jun 12, 2025
feat: Support defining type maps as an escape hatch Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

trpc/trpc#6800 · 1 comment · Opened Jun 2, 2025
feat: support tanstack solid query Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

trpc/trpc#6779 · 2 comments · 3 reactions · Opened May 24, 2025
feat: Support enhancing the context Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

trpc/trpc#6772 · 1 reaction · Opened May 21, 2025
docs: Disable error redaction on dehydration when using Next.js Open

📚 documentation / examples

Difficulty 1/5 1-3 hours Newbie friendliness 58/100

trpc/trpc#6771 · 1 comment · 2 reactions · Opened May 19, 2025
docs: NextJS 15/AppRouter + tRPC + @tanstack/react-query: Integration & Code Examples Open

👉 good first issue 📚 documentation / examples

Difficulty 4/5 3-5 days Newbie friendliness 35/100

trpc/trpc#6741 · 9 comments · Opened May 3, 2025
bug: Hydration error using loading state of useQuery when prefetching Open

🐜 blocked: external bug blocked

Difficulty 4/5 3-5 days Newbie friendliness 45/100

trpc/trpc#6740 · 13 comments · 9 reactions · Opened May 3, 2025
bug: tRPC client is undefined Open

🐛 bug: unconfirmed

Difficulty 4/5 3-5 days Newbie friendliness 25/100

trpc/trpc#6724 · 1 comment · Opened Apr 24, 2025
bug: AnyTRPCRouter immediately collides Open

🐛 bug

Difficulty 4/5 3-5 days Newbie friendliness 43/100

trpc/trpc#6721 · 3 comments · Opened Apr 23, 2025
feat: Move zod parsing on inputs and outputs to another thread to not block main thread Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

trpc/trpc#6717 · 3 comments · Opened Apr 21, 2025
feat: add mutation args to useMutation onSucess override Open

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

trpc/trpc#6715 · 2 comments · Opened Apr 21, 2025
feat: Request to Revert the Block of application/x-www-form-urlencoded in TRPC 11 (#5522) Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

trpc/trpc#6708 · 4 comments · Opened Apr 14, 2025

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