Openplugin

OpenPlugin is an open-source framework designed to standardize and simplify how developers integrate and use AI plugins across large language models. Its primary purpose is to provide a unified way to connect LLMs like ChatGPT to external tools, APIs, and services, without being locked into a single provider’s plugin ecosystem. By offering a common interface, OpenPlugin enables more capable AI applications that can interact with real-world data and systems in a consistent, maintainable way.

OpenPlugin introduces a declarative plugin specification that allows developers to define tools and their capabilities in a structured, provider-agnostic format. It supports automatic generation of OpenAPI-compatible schemas, making it easier to expose existing APIs as AI-ready plugins. The framework manages routing, authentication, and invocation of tools behind a clean abstraction layer, so LLMs can call plugins using a standard protocol. Because it is open source, teams can self-host, extend, and audit the plugin infrastructure, improving transparency and control over how AI systems access external resources.