Will this plugin violate Claude Code's Terms of Service?

[matthewpomar]

Hey! Love what you're building here. Really excited about having Claude Code integrated directly into Obsidian with a proper UI.

Before I go all-in, I wanted to ask about ToS compliance with Anthropic.

There was a wave of account bans in early 2026 targeting tools like OpenCode, Crush, and Clawdbot. Those tools were spoofing the Claude Code client identity, hijacking subscription OAuth tokens and impersonating Claude Code's headers to route requests through unauthorized wrappers. Anthropic banned accounts that triggered their abuse filters.

From what I can tell, Claudian works differently. It wraps the actual Claude Code process as the backend rather than impersonating it. So Claude Code is still the real client talking to Anthropic's servers, and Claudian is just a GUI layer on top.

A few questions:

1. Can you confirm that Claudian launches the real Claude Code binary and doesn't independently authenticate with Anthropic using subscription credentials?
2. Has there been any communication with Anthropic about whether this type of integration is within their ToS?
3. Any plans that might change how Claudian connects to Claude (e.g., direct API calls bypassing Claude Code)?

Not trying to spread FUD. I think what you're doing is the right approach. Just want to understand the architecture before I trust it with my daily workflow. The ban wave spooked a lot of us and I'd rather ask upfront than find out the hard way.

Thanks for the great work! 🙌

[YishenTu]

i don't think so, it's 100% comply with Anthropic's TOS. A very simple verification is that Claudian hasn't got a button to open the OAuth page for you to sign in, that means we use the local CC/Claude Agent SDK.