Function getSubBlocksForToolInput

apps/sim/tools/params.ts:987–1133

(
  toolId: string,
  blockType: string,
  currentValues?: Record<string, unknown>,
  canonicalModeOverrides?: CanonicalModeOverrides,
  blockConfigOverride?: Pick<ToolInputBlockConfig, 'subBlocks'>
)

 * visibility from the tool's param definitions.
 */
export function getSubBlocksForToolInput(
  toolId: string,
  blockType: string,
  currentValues?: Record<string, unknown>,
  canonicalModeOverrides?: CanonicalModeOverrides,
  blockConfigOverride?: Pick<ToolInputBlockConfig, 'subBlocks'>
): SubBlocksForToolInput | null {
  try {
    const toolConfig = getTool(toolId)
    if (!toolConfig) {
      logger.warn(`Tool not found: ${toolId}`)
      return null
    }

    const blockConfigs = getBlockConfigurations()
    const blockConfig = blockConfigOverride ?? blockConfigs[blockType]
    if (!blockConfig?.subBlocks?.length) {
      return null
    }

    const allSubBlocks = blockConfig.subBlocks as BlockSubBlockConfig[]
    const canonicalIndex = buildCanonicalIndex(allSubBlocks)

    // Build values for condition evaluation
    const values = currentValues || {}
    const valuesWithOperation = { ...values }
    if (valuesWithOperation.operation === undefined) {
      const parts = toolId.split('_')
      valuesWithOperation.operation =
        parts.length >= 3 ? parts.slice(2).join('_') : parts[parts.length - 1]
    }

    // Build a map of tool param IDs to their resolved visibility
    const toolParamVisibility: Record<string, ParameterVisibility> = {}
    for (const [paramId, param] of Object.entries(toolConfig.params || {})) {
      toolParamVisibility[paramId] =
        param.visibility ?? (param.required ? 'user-or-llm' : 'user-only')
    }

    // Track which canonical groups we've already included (to avoid duplicates)
    const includedCanonicalIds = new Set<string>()

    const filtered: BlockSubBlockConfig[] = []

    for (const sb of allSubBlocks) {
      // Skip excluded types
      if (EXCLUDED_SUBBLOCK_TYPES.has(sb.type)) continue

      // Skip trigger-mode-only subblocks
      if (isTriggerModeSubBlock(sb)) continue

      // Hide tool API key fields when running on hosted Sim or when env var is set
      if (isSubBlockHidden(sb)) continue

      // Determine the effective param ID (canonical or subblock id)
      const effectiveParamId = sb.canonicalParamId || sb.id

      // Resolve paramVisibility: explicit > inferred from tool params > skip