Gemini-compatible API Gateways Integration Guide

Overview

Gemini-compatible API Gateways are governed by routing traffic through a managed proxy to attribute activity, apply policy, and shield provider keys.

Support level

Compatibility Adapter + Provider/API Proxy

What Cup’n’String detects

• Custom base URLs
• Known provider domains
• API-key-bearing environment variables/config files
• Local proxy endpoints

What it governs

• Approved provider access
• API key shielding
• Model gateway routing
• Audit of agent/provider traffic

Recommended policies

• Require provider allowlist
• Use organization-approved proxy URLs
• Block direct calls to unapproved providers
• Redact API keys from logs and prompts

Setup outline

1. Ensure the Cup’n’String client is running.
2. Route Gemini API base calls through the local proxy gateway.
3. Apply organization-approved Gemini security credentials.

Verification

Send a model request to the Gemini API and verify it is captured and logged.

Troubleshooting

Verify the host proxy is not filtering out Vertex AI or Google Generative AI endpoints.

Known limitations

Provider-specific metadata varies across APIs and compatibility layers.