deepseek-ai/deepseek-harness · error · LlmError

NO_ADAPTER

NO_ADAPTER

Error message

no adapter registered for provider "${provider}"

What it means

Error "no adapter registered for provider "${provider}"" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/llm/llm/src/index.ts:873

          throw new LlmError(
            'prepared LLM call config changed before adapter dispatch',
            'INVALID_PREPARED_CALL',
          )
        }
        dispatched = true
        return this.streamWithRegistration(options, {
          registration,
          config: resolvedConfig,
          modelInfo,
          dispatch: options => adapterCall.stream(options),
        })
      },
    })
  }

  private registration(provider: string): AdapterRegistration {
    const registration = this.adapters.get(provider)
    if (!registration) throw new LlmError(`no adapter registered for provider "${provider}"`, 'NO_ADAPTER')
    return registration
  }

  /** Remove replay state whose historical route is owned by another adapter. */
  private forAdapter(options: GenerateOptions, adapter: LlmAdapter): GenerateOptions {
    const messages: Message[] = options.messages.map((message) => {
      const source = message.source
      if (message.role !== 'assistant' || source.kind !== 'model' || source.replayState === undefined) return message
      if (this.adapters.get(source.provider)?.adapter === adapter) return message
      return freezeMessage({
        ...message,
        source: { kind: 'model', provider: source.provider, model: source.model },
      })
    })
    if (messages.every((message, index) => message === options.messages[index])) return options
    const filtered = { ...options, messages }
    return Object.isFrozen(options) ? deepFreeze(filtered) : filtered
  }

View on GitHub (pinned to b150a551b8)

Solutions

1. Register an adapter for the provider, or correct the provider name.

When it happens

Trigger: Thrown at packages/llm/llm/src/index.ts:873 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of deepseek-ai/deepseek-harness@b150a551b8 (2026-08-24). Data as JSON: /api/errors/6d36205170ae7252. Report an issue: GitHub.