Function processCustomToolDefinitions

sdk/src/run-state.ts:110–133

* Processes custom tool definitions into the format expected by SessionState. * Converts Zod schemas to JSON Schema format so they can survive JSON serialization.

(
  customToolDefinitions: CustomToolDefinition[],
)

 * Converts Zod schemas to JSON Schema format so they can survive JSON serialization.
 */
function processCustomToolDefinitions(
  customToolDefinitions: CustomToolDefinition[],
): CustomToolDefinitions {
  return Object.fromEntries(
    customToolDefinitions.map((toolDefinition) => {
      // Convert Zod schema to JSON Schema format so it survives JSON serialization
      // The agent-runtime will wrap this with AI SDK's jsonSchema() helper
      const jsonSchema = z.toJSONSchema(toolDefinition.inputSchema, {
        io: 'input',
      }) as Record<string, unknown>
      delete jsonSchema['$schema']

      return [
        toolDefinition.toolName,
        {
          inputSchema: jsonSchema,
          description: toolDefinition.description,
          endsAgentStep: toolDefinition.endsAgentStep,
          exampleInputs: toolDefinition.exampleInputs,
        },
      ]
    }),
  )
}

/**
 * Computes project file indexes (file tree and token scores)