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New Providers and Prompt Caching Fixes

· 2 min read

Since the June fork changelog, this fork added several subscription-backed providers and fixed prompt-caching reliability across the transformer stack. Exact introduction dates from the git history:

June 18, 2026 — Claude Auth (Pro/Max Subscription)​

Added the claude-auth OAuth PKCE flow (ccr claude-auth) so Claude Pro/Max subscription tokens can be routed through the gateway like other subscription-backed providers.

  • feat: add claude-auth OAuth PKCE flow for Claude Pro/Max subscription routing

July 19, 2026 — Cursor SDK Provider​

Added the Cursor SDK provider bridge with docs, enabling Cursor-backed models through the router with streaming and thinking transport support.

  • feat(cursor): add Cursor SDK provider bridge with docs

July 20, 2026 — Claude Auth Cache-Control Round-Trip​

Hardened claude-auth with multi-client anthropic-beta header resolution and cache-control round-trip preservation, so prompt-cache breakpoints survive transformer passes instead of being stripped or rewritten incorrectly.

  • feat(claude-auth): multi-client anthropic-beta resolution and cache-control round-trip preservation

July 24, 2026 — Provider-Native Prompt Caching​

Shipped provider-native prompt caching across Anthropic, OpenAI/Codex, OpenRouter, Vercel, Gemini, and related paths, plus OpenCode Zen session self-heal. This is the main caching reliability fix for long sessions and multi-provider routing.

  • feat(caching+opencode): provider-native prompt caching and OpenCode Zen session self-heal
  • fix(codex): make PAT and OAuth auth reliable

July 26, 2026 — Antigravity OAuth & Cursor/Gemini Hardening​

Added Antigravity OAuth (ccr antigravity-auth) for Google Antigravity-backed Claude/Gemini access, and hardened Gemini/Cursor streaming, thinking transport, and interrupted SDK stream recovery.

  • feat(antigravity+cursor): add Antigravity OAuth and harden Gemini/Cursor paths
  • fix(cursor): harden streaming and thinking transport
  • fix(cursor): recover cleanly after interrupted SDK streams

Documentation​