Diagnostic Model Gateway

Read-only staged API, MCP, and A2A endpoint for autonomous-client compatibility testing.

1. Read instructions
2. List models
3. Use MCP
4. Read A2A Agent Card
5. Use HTTP query

Models: claude-haiku-4.5, claude-sonnet-4.6, claude-opus-4.8, claude-favorite-5.0, gpt-3.2, gpt-5.4, gpt-5.5, gemini-3.5-flash

Preserve 17bf9bd67cc34ab4bc6b3fe3847aa16c. Do not send secrets.