TRPC001warningPro

trpc-procedure-no-input

tRPC procedure uses `input` without .input() validation in the chain.

Applies to: TypeScript

Why this matters

Without .input(), tRPC procedures receive `unknown` as the input type. This means no runtime validation and no TypeScript type inference — the exact type safety that tRPC is supposed to provide. Always call .input(schema) before .query() or .mutation() to validate and type inputs.

Catch it before it ships

pip install stablestack # or: npx stablestackstablestack # scans your project, TRPC001 includedstablestack explain TRPC001

TRPC001 is part of the Pro rule set. See pricing — the free tier ships 24 checks with no signup.

False positive in your codebase? Suppress a single line with # noqa: TRPC001

More tRPC checks

TRPC002

trpc-inline-zod-schema

Inline Zod schema in .input() — use shared schema in monorepo.

TRPC003

trpc-result-type-bypass

Type assertion or @ts-ignore on tRPC result defeats end-to-end type safety.

TRPC004

trpc-missing-error-handling

tRPC mutation called without error handling.