actors-mcp-server

import type { ValidateFunction } from 'ajv'; import Ajv from 'ajv'; export const ajv = new Ajv({ coerceTypes: 'array', strict: false }); /** * Removes the $schema property and fixes the required array from a JSON schema. * The z.toJSONSchema() function in Zod 4.x has two issues: * 1. Includes a $schema reference that can cause issues when compiling with AJV * 2. Incorrectly marks fields with default values as required * * This function fixes both issues to ensure proper schema validation. */ function cleanJsonSchema(schema: Record<string, unknown>): Record<string, unknown> { const cleaned = { ...schema }; delete cleaned.$schema; // Fix the required array: remove fields that have default values if (Array.isArray(cleaned.required) && typeof cleaned.properties === 'object' && cleaned.properties !== null) { const properties = cleaned.properties as Record<string, unknown>; cleaned.required = (cleaned.required as string[]).filter( (fieldName) => { const fieldSchema = properties[fieldName]; // Only include in required if the field doesn't have a default value return !(typeof fieldSchema === 'object' && fieldSchema !== null && 'default' in fieldSchema); }, ); } return cleaned; } /** * Compiles a JSON schema with AJV, automatically cleaning the $schema property * and fixing the required array. * This wrapper ensures compatibility with z.toJSONSchema() output. */ export function compileSchema(schema: Record<string, unknown>): ValidateFunction { return ajv.compile(cleanJsonSchema(schema)); }