The production server now supports the MCP 2026-07-28 protocol, stateless Streamable HTTP, OAuth 2.1/PKCE, refresh tokens, and continued compatibility for older clients.

img-forge is also now published in the official MCP Registry, so agents can discover and connect to it more easily.

Behind the scenes, we tightened per-tier credit billing and improved the behavior of slow premium generations so agents can continue with a job instead of failing on a timeout.

I actually launched img-forge on June 16 (blog post) as a headless image generation API for agents one endpoint, eleven models, five quality tiers. "Ultra" and "ultra_plus" were marked coming soon.

Here's what's true today.

Ultra tier is live behind a community unlock, not a waitlist. Gemini 3.1 Flash Image Preview (ultra) and Gemini 3 Pro Image Preview (ultra_plus) are in production, alongside four OpenAI models (gpt-image-1-mini through gpt-image-2).