Plugins

The Cursor 3.9 Customize page, shipped June 22, 2026, replaces scattered JSON config files and settings panels with one unified UI for managing plugins, MCP servers, skills, subagents, rules, commands, and hooks. Instead of editing mcp.json by hand or hunting through tabs for rule files, you now open a single sidebar panel and manage every extension category from one place. This guide walks through every feature — scope levels, the plugin marketplace, team leaderboards, MCP server management without JSON, and the new plugin format — so you can configure Cursor for yourself or your entire team in minutes. ...

OpenAI Codex plugins are pre-built integrations that connect Codex’s AI coding agent to external tools — from Slack and GitHub to Jira and CircleCI — letting developers trigger multi-step workflows across your entire software stack without switching contexts. As of April 2026, the marketplace offers 90+ plugins across seven categories, and enterprise teams at Cisco, Rakuten, and Ramp are using them to automate developer workflows that previously required custom tooling. ...