KUBB_ADAPTER_REQUIRED: Adapter required#

Code: KUBB_ADAPTER_REQUIRED
Level: error

An action needs an adapter but none is configured.

What happened#

The adapter turns your spec into the AST that plugins generate from, and must be set before any plugin runs. This diagnostic is defined in Kubb's diagnostic catalog, but no code path in the current source reports it: defineConfig (the standard entry point, used in the example below) always fills in a default adapter (adapterOas()) when adapter is omitted, so a config without an explicit adapter never triggers it today.

How to fix it#

Set adapter in kubb.config.ts.

import { defineConfig } from 'kubb/config'
import { adapterOas } from '@kubb/adapter-oas'

export default defineConfig({
  input: './petStore.yaml',
  output: { path: './src/gen' },
  adapter: adapterOas(),
  plugins: [/* ... */],
})

Example output#

[KUBB_ADAPTER_REQUIRED]: An adapter is required, but none is configured.
  fix: Set `adapter` in kubb.config.ts (for example `adapterOas()`).
  see: https://kubb.dev/docs/5.x/reference/diagnostics/kubb-adapter-required

See also#

• Adapters
• Configuration
• Diagnostics reference