App-server protocol: https://learn.chatgpt.com/docs/app-server
Opencode: https://opencode.ai/docs/server/
Reading through the whole post, this sounds like an thoughtfully and intentionally designed product. One with strong opinions and the developer’s real lessons behind it. In the current era of slopware- especially around AI tooling - this is giving me damn near an emotional reaction. I am happy to see this.
But right above this statement, on the Professional Edition purchase page, it says its only for Windows and Mac..
How come?
T3 does it this way.
Claude behaves in Claude Code somewhat differently vs other coding harnesses (sometimes it's a remarkable improvement) connected directly via api. Also, it cost more than the subscription. There's quite a bit of baked in tooling and assumptions in Claude code that may be good for you, or unhelpful based on what you are doing.
They want you to use and get accustomed to only their own tools. If other coding harnesses were allowed, it's far too easy to switch providers.
They can't allow that, because they only have a few months of head start.
So everyone accepts Claude code which is required for these sweet subsidized tokens.
I thought it meant the license was missing on GitHub but, no, it's an actual license called the Unlicense.
But then there is the Community and Pro edition so which is which on GitHub? Is the pro version hidden somewhere?
Plus a c++ code base in 2026. I think modern c++ can be made quite safe but I need some claims that it's taken seriously which I don't see.
I'm confused.
AFAIK - Of the big three only OpenAI explicitly allows third party harnesses without paying exorbitant API rates. It's one of the primary reasons I still use them.
To avoid these problems some folks use tools like herdr which operate like tmux to drive the official harness, rather than speaking directly to the API routes.
BewareTheYiga•51m ago