Description Since Cursor 3.9.16, AI model requests are handled by the always-local-singleton utility process. This process does not honor the IDE’s http.proxy or http.proxySupport settings — it makes direct connections using Node.js native http2.connect() / https.request() without a proxy agent. Ad…

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Where does the bug appear (feature/product)? Cursor IDE Describe the Bug Since Cursor 3.9.16, AI model requests are handled by the always-local-singleton utility process. This process has two issues: Ignores http.proxy setting — It calls https.request(url, options) and http2.connect() without a …

I can confirm this issue also exists on Windows. After upgrading to Cursor 3.9.16, the configured SOCKS5 proxy is no longer respected for AI requests in some cases, even though other network requests still go through the proxy. As a result, I receive the error: “This model provider is not support…

hey @z_m , indeed it seems like it might not be that simple, pulled from the answer, see : it’s which IP the catalog request goes through. [image] Desktop model catalog filtered since June 29, but web works (same account) Bug Reports Hey, thanks for the detail…

If you use WireShark to inspect the packet you could see Cursor 3.9.* actually leaking connection without following the proxy specially for api2.cursor.sh. Right now, just downgrade back to 3.8.24 and disable update.

I really don’t want to use global TUN mode or downgrade the version. For Linux users, I’ve provided a script to solve this issue. I don’t use Windows or macOS myself, but the general approach should be the same, so you can adapt it for those platforms. https://gist.github.com/Anveena/e217b9…

disable gate features： decompose_always_local_ext_host cursor_extensions_isolation_v2

Where does the bug appear (feature/product)? Cursor IDE Describe the Bug i’ve problem in newer version 3.9.16 with connection trough proxy, seems the connection doesn’t goes trough anymore which result to error : Cursor Network Diagnostic Results FAILED (5): SSL, API, Ping, Chat, Agent DNS: Succ…

Hey all - thanks for the detailed reports and digging here. This is one issue, not several. On 3.9.x, AI/model requests moved to a new connection path that defaults to HTTP/2, and HTTP/2 traffic doesn’t currently go through a configured proxy. The request then reaches us from your real IP, which sh…

I don’t know who used this script, but I’ve identified all the domains officially listed by Cursor, making my script more reliable. I hope the two friends who liked this post see this message.

[Bug] always-local-singleton ignores http.proxy and server overrides cursor.general.disableHttp2

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Tom_Coustols (Tom Coustols) June 30, 2026, 6:15am 8

hey @z_m, indeed it seems like it might not be that simple, pulled from the answer, see :

it’s which IP the catalog request goes through.

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[Bug] always-local-singleton ignores http.proxy and server overrides cursor.general.disableHttp2

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