Protocol that enables AI coding assistants like Cursor to integrate with JetBrains IDEs, allowing developers to use frontier models across different development environments.
The Agent Client Protocol (ACP) is a standardized protocol that allows AI coding assistants to integrate with various integrated development environments (IDEs).
In March 2026, Cursor joined the ACP Registry and became available in IntelliJ IDEA, PyCharm, WebStorm, and other JetBrains IDEs. This allows developers who rely on JetBrains for Java and multilanguage support to use any frontier model from OpenAI, Anthropic, Google, and Cursor for agent-driven development.
ACP provides a standardized interface for:
ACP is helping standardize AI coding assistant integration, similar to how the Language Server Protocol (LSP) standardized language tooling.
Open protocol, free to implement.
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