deepseek-ai/deepseek-harness · error · ToolArgsError

INVALID_ARGS

INVALID_ARGS

Error message

invalid arguments: ${violations.join('; ')}

What it means

Error "invalid arguments: ${violations.join('; ')}" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/core/tools/src/schema.ts:587

  const tool: ToolDefinition = {
    name: options.name,
    description: options.description,
    parameters: parameters as unknown as Record<string, unknown>,
    output: {
      schema: outputSchema,
      render(args: unknown, value: JsonValue): ContentBlock[] {
        return userRender(args as InferArgs<S>, value as unknown as InferValue<NoInfer<O>>)
      },
      ...userPresentationMeta !== undefined ? {
        presentationMeta(args: unknown, value: JsonValue): JsonValue {
          return userPresentationMeta(args as InferArgs<S>, value as unknown as InferValue<NoInfer<O>>)
        },
      } : {},
    },
    ...(options.timeoutMs !== undefined ? { timeoutMs: options.timeoutMs } : {}),
    async execute(args: unknown, exec: ToolRunContext): Promise<JsonValue> {
      const violations = validate(args)
      if (violations.length > 0) throw new ToolArgsError(violations)
      return userExecute(args as InferArgs<S>, exec) as Promise<JsonValue>
    },
  }
  if (userFinalizeContent) {
    tool.finalizeContent = (exec, result) => userFinalizeContent(exec, result)
  }
  // Presentation is display-only and may run on REPLAY of arbitrary logged args
  // (possibly from an older schema), so it must never throw: validate softly and
  // fall back to `undefined` (a generic UI presentation) on any mismatch, rather
  // than the hard `ToolArgsError` the execute path raises.
  if (userPresentCall) {
    tool.presentCall = (args: unknown): ToolCallView | undefined => {
      if (validate(args).length > 0) return undefined
      return userPresentCall(args as InferArgs<S>)
    }
  }
  if (userPresentResult) {
    tool.presentResult = (args: unknown, result: ToolResult): ToolResultView | undefined => {

View on GitHub (pinned to b150a551b8)

When it happens

Trigger: Thrown at packages/core/tools/src/schema.ts:587 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/4afeb3688b37f1be. Report an issue: GitHub.