Built and maintained by Acorn Labs and the gptscript-ai open-source organization.

GPTScript is a scripting framework and runtime that lets an LLM call local executables, APIs, and OpenAPI-described systems from natural-language instructions.

Available as a Go-based CLI and SDKs (Python, Node, Go) installed locally or embedded in applications.

Launched in 2023 and continues to receive releases through 2026.

It exists to let developers wire an LLM to real systems and tools with a few lines of prompt-like script instead of custom glue code.

Depends on an LLM provider API key (OpenAI-compatible) and optionally local tools or Docker for sandboxed execution.

Open-source under Apache 2.0, executes tool calls and scripts locally, sending only the relevant prompt or tool context to the configured LLM API.