deepseek-ai/deepseek-harness · error · Error

llm-deepseek: catalog model "${model.id}" maxTokens must be

Error message

llm-deepseek: catalog model "${model.id}" maxTokens must be a positive integer

What it means

Error "llm-deepseek: catalog model "${model.id}" maxTokens must be a positive integer" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/llm/llm-deepseek/src/index.ts:211

export type ResolvedDeepSeekOptions = DeepSeekConnectionOptions

/** Resolve, validate, and detach the advisory model catalog. */
function resolveModels(models: readonly DeepSeekCatalogModel[] | undefined): DeepSeekCatalogModel[] {
  const seen = new Set<string>()
  return (models ?? DEFAULT_MODELS).map((model) => {
    if (model.id.length === 0) throw new Error('llm-deepseek: catalog model ids must be non-empty')
    if (model.name !== undefined && model.name.length === 0) {
      throw new Error(`llm-deepseek: catalog model "${model.id}" has an empty name`)
    }
    if (model.contextWindow !== undefined
      && (!Number.isInteger(model.contextWindow) || model.contextWindow <= 0)) {
      throw new Error(
        `llm-deepseek: catalog model "${model.id}" contextWindow must be a positive integer`,
      )
    }
    if (model.maxTokens !== undefined
      && (!Number.isInteger(model.maxTokens) || model.maxTokens <= 0)) {
      throw new Error(
        `llm-deepseek: catalog model "${model.id}" maxTokens must be a positive integer`,
      )
    }
    const inputModalities = model.inputModalities ?? ['text']
    if (inputModalities.length === 0) {
      throw new Error(`llm-deepseek: catalog model "${model.id}" inputModalities must not be empty`)
    }
    if (inputModalities.some(modality => !MODEL_MODALITIES.includes(modality))) {
      throw new Error(
        `llm-deepseek: catalog model "${model.id}" inputModalities must contain only "text" and "image"`,
      )
    }
    if (new Set(inputModalities).size !== inputModalities.length) {
      throw new Error(`llm-deepseek: catalog model "${model.id}" inputModalities must not contain duplicates`)
    }
    const hasImage = inputModalities.includes('image')
    if (!hasImage && (model.imagePixelBudget !== undefined
      || model.imageMaxBytes !== undefined || model.imageDetail !== undefined)) {

View on GitHub (pinned to b150a551b8)

Solutions

1. Set maxTokens to a positive integer.

When it happens

Trigger: Thrown at packages/llm/llm-deepseek/src/index.ts:211 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/0ee71373484ef576. Report an issue: GitHub.