Cursor adds Composio, GPT-5.6 inside

Cursor and Composio said on July 9 that Cursor users can now connect to more than 1,000 external apps through Composio’s plugin and MCP tooling, while Cursor separately made OpenAI’s GPT-5.6 family available inside the coding editor. The two updates landed the same day and were promoted across company pages and social posts. Composio’s marketplace page for Cursor describes the integration as a way to “connect and operate 1000+ external apps” from Cursor through a Composio MCP server, with managed OAuth, tool routing and a remote sandbox. ### Which products were actually announced on July 9? Cursor’s community forum said on July 9 that “GPT-5.6 is now available in Cursor,” adding that the rollout includes the Sol, Terra and Luna variants. The forum post said the model family is aimed at “complex coding” and “long-running agent tasks,” language that matches how users have been discussing agent workflows and build tasks around the launch. (cursor.com) Composio’s Cursor materials were already live by July 9 and describe a setup that lets Cursor connect to outside software through Composio’s infrastructure. The company’s site says its platform offers “just-in-time tool calls, secure delegated auth, sandboxed environments, and parallel execution across 1,000+ apps,” while its Cursor setup page says developers can connect “1000+ integrations” to a Cursor-based agent. (forum.cursor.com) ### What does Composio add inside Cursor? Composio’s Cursor marketplace listing says the integration lets users “connect and operate 1000+ external apps from Cursor via the Composio MCP server.” The same page cites managed OAuth, intelligent tool routing and a remote sandbox for bulk data tasks. The company’s documentation says Composio sessions can expose an MCP endpoint and be configured around selected toolkits, authentication settings and connected accounts. (composio.dev) A separate Composio page says its tool router can dynamically load tools from Cursor and other apps through a single MCP endpoint rather than exposing every tool at once. ### How broad is the app catalog? (cursor.com) Composio’s homepage, GitHub repository and Cursor setup pages all use the same scale claim: more than 1,000 apps or toolkits. The company’s public materials tie that catalog to productivity, developer and business software, and its ChatGPT integration page names examples including Gmail, Slack, Notion and Linear. The Cursor-specific toolkit documentation also shows that Composio has built direct tooling around Cursor’s own API. (docs.composio.dev) That page lists functions for getting agent conversations, listing agents, listing available models and listing repositories, indicating that the integration is designed for both external app access and Cursor-native actions. ### What has Cursor said about GPT-5.6 itself? (composio.dev) Cursor’s July 9 forum announcement says the GPT-5.6 family is now inside the editor, and a companion discussion thread asks users how the models compare with GPT-5.5 and others on “long-running coding, tool use, and design work.” CursorBench, the company’s benchmark page, also shows that it recently expanded toward instruction-following and advanced tool-use problems, giving context for why model launches are being framed around agent performance. (docs.composio.dev) OpenAI previewed GPT-5.6 Sol last week and said the model has stronger capabilities in coding, science and cybersecurity. Cursor linked users from its forum to OpenAI’s announcement as the upstream model reference. ### Where can developers verify the rollout? The July 9 confirmation for GPT-5.6 is on Cursor’s community forum, and the Composio integration details are on Cursor’s marketplace page and Composio’s setup and documentation pages. (forum.cursor.com) Cursor’s marketplace entry for Composio and Composio’s own setup guide were both accessible on July 9, while the GPT-5.6 availability thread was published that day. (openai.com)