OpenCode supports standard proxy environment variables and custom certificates for enterprise network environments.
##Proxy
OpenCode respects standard proxy environment variables.
# HTTPS proxy (recommended)
export HTTPS_PROXY=https://proxy.example.com:8080
# HTTP proxy (if HTTPS not available)
export HTTP_PROXY=http://proxy.example.com:8080
# Bypass proxy for local server (required)
export NO_PROXY=localhost,127.0.0.1
:::caution The TUI communicates with a local HTTP server. You must bypass the proxy for this connection to prevent routing loops. :::
You can configure the server's port and hostname using CLI flags.
###Authenticate
If your proxy requires basic authentication, include credentials in the URL.
export HTTPS_PROXY=http://username:password@proxy.example.com:8080
:::caution Avoid hardcoding passwords. Use environment variables or secure credential storage. :::
For proxies requiring advanced authentication like NTLM or Kerberos, consider using an LLM Gateway that supports your authentication method.
##Custom certificates
If your enterprise uses custom CAs for HTTPS connections, configure OpenCode to trust them.
export NODE_EXTRA_CA_CERTS=/path/to/ca-cert.pem
This works for both proxy connections and direct API access.