Fission-AI/OpenSpec · error

At least one tool must be selected

Error message

At least one tool must be selected

What it means

Error "At least one tool must be selected" thrown in Fission-AI/OpenSpec.

Source

Thrown at src/core/init.ts:694

      .filter((tool) => !configuredToolIds.has(tool.value))
      .map((tool) => tool.name);

    if (detectedOnlyNames.length > 0) {
      const detectionLabel = shouldPreselectDetected
        ? 'pre-selected for first-time setup'
        : 'not pre-selected';
      console.log(`Detected tool directories: ${detectedOnlyNames.join(', ')} (${detectionLabel})`);
    }

    const selectedTools = await searchableMultiSelect({
      message: `Select tools to set up (${validTools.length} available)`,
      pageSize: 15,
      choices: sortedChoices,
      validate: (selected: string[]) => selected.length > 0 || 'Select at least one tool',
    });

    if (selectedTools.length === 0) {
      throw new Error('At least one tool must be selected');
    }

    return selectedTools;
  }

  private resolveToolsArg(): string[] | null {
    if (typeof this.toolsArg === 'undefined') {
      return null;
    }

    const raw = this.toolsArg.trim();
    if (raw.length === 0) {
      throw new Error(
        'The --tools option requires a value. Use "all", "none", or a comma-separated list of tool IDs.'
      );
    }

    const availableTools = getToolsWithSkillsDir();

View on GitHub (pinned to 6926ccb18a)

When it happens

Trigger: Thrown at src/core/init.ts:694 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of Fission-AI/OpenSpec@6926ccb18a (2026-08-25). Data as JSON: /api/errors/948fb68216f17eb6. Report an issue: GitHub.