The API Bridge Agent is a specialized module within AGNTCY's Syntactic SDK that connects AI agents to external RESTful services. It allows developers to register API endpoints with OpenAPI schemas or custom definitions, handles authentication tokens, and empowers agents to translate natural language queries into precise API calls. Upon execution, it parses JSON responses, validates data against schemas, and formats results for downstream processing. With built-in error handling and retry mechanisms, the API Bridge Agent ensures robust communication between AI-driven logic and external systems, enabling applications like automated customer support, dynamic data retrieval, and orchestration of multi-API workflows without manual integration overhead.