Function buildInputSchema

src/tools/custom-tool-handler.ts:91–149

(parameters: ParameterConfig[] | undefined)

 * @returns JSON Schema object
 */
export function buildInputSchema(parameters: ParameterConfig[] | undefined): {
  type: "object";
  properties: Record<string, any>;
  required?: string[];
} {
  // Convert Zod schema to JSON Schema-like format for MCP
  const properties: Record<string, any> = {};
  const required: string[] = [];

  if (parameters) {
    for (const param of parameters) {
      const propSchema: any = {
        description: param.description,
      };

      // Map type to JSON Schema type
      switch (param.type) {
        case "string":
          propSchema.type = "string";
          break;
        case "integer":
          propSchema.type = "integer";
          break;
        case "float":
          propSchema.type = "number";
          break;
        case "boolean":
          propSchema.type = "boolean";
          break;
        case "array":
          propSchema.type = "array";
          break;
      }

      // Add enum if allowed_values specified
      if (param.allowed_values && param.allowed_values.length > 0) {
        propSchema.enum = param.allowed_values;
      }

      properties[param.name] = propSchema;

      // Track required fields
      if (param.required !== false && param.default === undefined) {
        required.push(param.name);
      }
    }
  }

  const schema: any = {
    type: "object",
    properties,
  };

  if (required.length > 0) {
    schema.required = required;
  }

  return schema;