deepseek-ai/deepseek-harness · error · Error

agent "${this.id}" has no provider/model: set AgentOptions.p

Error message

agent "${this.id}" has no provider/model: set AgentOptions.provider and AgentOptions.model or supply both via the agent/request waterfall

What it means

Error "agent "${this.id}" has no provider/model: set AgentOptions.provider and AgentOptions.model or supply both via the agent/request waterfall" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/core/agent-loop/src/agent.ts:463

      : undefined
    const maxTokens = this.options.maxTokens
    const seedConfig = deepFreeze(structuredClone(
      this.requestHeaderLogged
        // oxlint-disable-next-line typescript/no-non-null-assertion -- the instance logged the header it now folds
        ? requestProposal(persistedHeader!)
        : {
          ...route,
          ...reasoningEffort === undefined ? {} : { reasoningEffort },
          ...maxTokens === undefined ? {} : { maxTokens },
        },
    ))
    const proposedConfig = await this.dispatch.waterfall(
      'agent/request', { turn, step, signal },
      () => Promise.resolve(seedConfig),
    )
    signal.throwIfAborted()
    if (!proposedConfig.provider || !proposedConfig.model) {
      throw new Error(`agent "${this.id}" has no provider/model: set AgentOptions.provider and AgentOptions.model or supply both via the agent/request waterfall`)
    }
    let config: LlmCallConfig
    let preparedCall: PreparedLlmCall | undefined
    try {
      preparedCall = await this.loopCtx.llm.prepareCall(proposedConfig, signal)
      config = preparedCall.config
    } catch (error: unknown) {
      // Middleware may serve an unregistered route; terminal dispatch still requires an adapter.
      if (!(error instanceof LlmError) || error.code !== 'NO_ADAPTER') throw error
      config = proposedConfig
    }
    signal.throwIfAborted()

    const header = canonicalHeader({
      config,
      ...preparedCall === undefined ? {} : { adapterDefaults: preparedCall.adapterDefaults },
      ...system ? { system } : {},
      ...tools.length > 0 ? { tools } : {},

View on GitHub (pinned to b150a551b8)

Solutions

1. Set AgentOptions.provider and AgentOptions.model, or supply both via the agent/request waterfall.

When it happens

Trigger: Thrown at packages/core/agent-loop/src/agent.ts:463 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/a66ca2f070d10610. Report an issue: GitHub.