Visual Studio Code Copilot setup

Copilot inherits the networking stack from Visual Studio Code. Route the editor through aiproxy to monitor and govern every Copilot request.

• aiproxy running locally (examples assume http://localhost:8080)
• Complete the Quick Start → TLS certificate steps so your OS trusts the aiproxy certificate authority
• Copilot enabled in Visual Studio Code (desktop or insider build)

1. Open Visual Studio Code.
2. Press ⌘, to open Settings.
3. Search for Proxy.
4. Set Application → Proxy (or http.proxy in JSON) to http://localhost:8080.
5. Ensure HTTP: Proxy Support remains set to on.

1. Open Visual Studio Code.
2. Press Ctrl+, to open Settings.
3. Search for Proxy and set Application → Proxy to http://localhost:8080.
4. Verify HTTP: Proxy Support stays enabled.
5. If Copilot fails to connect, open Settings → Network & Internet → Proxy in Windows and add the same proxy there to ensure Electron honors it.

1. Open Visual Studio Code and press Ctrl+,.
2. Search for Proxy.
3. Set Application → Proxy to http://localhost:8080.
4. Confirm HTTP: Proxy Support is enabled.

Flatpak sandboxes do not see host certificates or environment variables by default. Perform these one-off steps:

1. Copy the certificate into the sandbox:

   install -D -m 0644 ~/.aiproxy/aiproxy-ca-cert.pem \
     /home/$USER/.var/app/com.visualstudio.code/data/certs/aiproxy-ca.pem

2. Grant Visual Studio Code access and expose the CA to Electron/Node:

   sudo flatpak override \
     --filesystem=/home/$USER/.var/app/com.visualstudio.code/data/certs/aiproxy-ca.pem:ro \
     --env=ELECTRON_EXTRA_CA_CERTS=/home/$USER/.var/app/com.visualstudio.code/data/certs/aiproxy-ca.pem \
     --env=NODE_EXTRA_CA_CERTS=/home/$USER/.var/app/com.visualstudio.code/data/certs/aiproxy-ca.pem \
     com.visualstudio.code

3. Import the CA into the sandbox NSS database used by Copilot:

   flatpak run --command=sh com.visualstudio.code -c '
     mkdir -p $HOME/.pki/nssdb &&
     certutil -d sql:$HOME/.pki/nssdb \
       -A -t "C,," -n "aiproxy-ca" \
       -i /home/$USER/.var/app/com.visualstudio.code/data/certs/aiproxy-ca.pem
   '

4. Restart Visual Studio Code so overrides apply:

   flatpak kill com.visualstudio.code

After these steps, set Application → Proxy to http://localhost:8080 inside Visual Studio Code as described earlier.

Open a Copilot chat or trigger inline suggestions. Watch the aiproxy terminal UI or logs for requests to api.*.githubcopilot.com. If you do not see traffic:

• Reconfirm the proxy setting (http.proxy) in Visual Studio Code
• Ensure the CA appears in your OS trust store (and inside the Flatpak sandbox if applicable) as described in the Quick Start guide
• Restart Visual Studio Code after changing environment variables or trust settings