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Anthropic blocks third-party use of Claude Code subscriptions

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Re: Anthropic blocks third-party use of Claude Code subscriptions

#101

This situation feels like a +1 for Agent Client Protocol (ACP) [1]. In ACP, you auth directly to the underlying agent (eg Claude Code SDK) rather than a third-party tool (eg OpenCode) that then calls an inference endpoint on your behalf. If you're logged into Claude Code, you're already logged into Claude Code through any ACP client. [1] https://agentclientprotocol.com/overview/agents

It works like that for the agent SDK, you could connect open code to that

Re: Anthropic blocks third-party use of Claude Code subscriptions

#103
post #15

This is an unusual L for Anthropic. The unfortunate truth is that the engineering in opencode is so far ahead of Claude Code. Obviously, CC is a great tool, but that's more about the magic of the model than the engineering of the CLI. The opencode team[^1][^2] built an entire custom TUI backend that supports a good subset of HTML/CSS and the TypeScript ecosystem (i.e. not tied to Opencode, a generic TUI renderer). Th…

> Anyway, this is embarrassing for Anthropic. Why? A few times in this thread I hear people saying "they shouldn't have done this" or something similar but not given any reason why. Listing features you like of another product isn't a reason they shouldn't have done it. It's absolutely not embarrassing, and if anything it's embarrassing they didn't catch and do it sooner.

It is embarrassing to restrict an open source tool that is (IMO) a strictly and very superior piece of software from using your model. It is not immoral, like I said, because it's clearly against the ToC; but it's not like OC is stealing anything from Anthropic by existing. It's the same subscription, same usage.

Obviously, I have no idea what's going on internally. But it appears to be an issue of vanity rather than financials or theft. I don't think Anthropic is suffering harm from OC's "login" method; the correct response is to figure out why this other tool is better than yours and create better software. Shutting down the other tool, if that's what's in fact happening, is what is embarrassing.

Re: Anthropic blocks third-party use of Claude Code subscriptions

#104
post #8

Earlier quoted context omitted.

They've added this change at the same time they added random trick prompts to try and get you hit enter on the training opt in from late last year. I've gotten three popups inside claude code today at random times trying to trick me into having it train my data with a different selection defaulted than I've already chosen. (edit 4 times now just today)

More evidence the EU solved the wrong problem. Instead of mandating cookie banners, mandate a single global “fuck off” switch: one-click, automatic opt-out from any feature/setting/telemetry/tracking/training that isn’t strictly required or clearly beneficial to the user as an individual. If it’s mainly there for data collection, ads, attribution, “product improvement”, or monetization, it should be off by default an…

Remember what happened do the DNT flag in the browser?

They just ignored until it was gone.

If you don’t give them a way to trick and annoy you into accept tracking they ignore completely what you want

Re: Anthropic blocks third-party use of Claude Code subscriptions

#105
post #15

This is an unusual L for Anthropic. The unfortunate truth is that the engineering in opencode is so far ahead of Claude Code. Obviously, CC is a great tool, but that's more about the magic of the model than the engineering of the CLI. The opencode team[^1][^2] built an entire custom TUI backend that supports a good subset of HTML/CSS and the TypeScript ecosystem (i.e. not tied to Opencode, a generic TUI renderer). Th…

Update: Ah, I see this part: "This credential is only authorized for use with Claude Code and cannot be used for other API requests."

Old comment for posterity: How do we know this was a strategy/policy decision versus just an engineering change? (Maybe the answer is obvious, but I haven't seen the source for it yet.) I skimmed the GitHub issue, but I didn't see discussion about why this change happened. I don't mean just the technical change; I mean why Anthropic did it. Did I miss something?

Re: Anthropic blocks third-party use of Claude Code subscriptions

#106

I know this will sound strange, but SOTA model companies will eventually allow subscription based usage through third-party tools. For any usage whatsoever. Models are pretty much democratized. I use Claude Code and opencode and I get more work done these days with GLM or Grok Code (using opencode). Z.ai (GLM) subscription is so worth it. Also, mixing models, small and large ones, is the way to go. Different models f…

Wouldn't this mean SOTA model companies are incentivized not to allow subscriptions through third parties? If all the models are interchangeable at the API layer, wouldn't they be incentivized to add value at the next level up and lock people in there to prevent customers from moving to competitors on a whim.

I do not know what that next level is to be honest. Web search, crawler, code execution, etc. can all be easily added on the agent side. And some of the small models are so good when the context is small that being locked into one provider makes no sense. I would rather build a heavy multi-agent solution, using Gemini, GLM, Sonnet, Haiku, GPT, and even use BERT, GlinER and other models for specific tasks. Low cost, no lock-in, still get high quality output.

Re: Anthropic blocks third-party use of Claude Code subscriptions

#107
post #72

Earlier quoted context omitted.

> Anyway, this is embarrassing for Anthropic. Why? A few times in this thread I hear people saying "they shouldn't have done this" or something similar but not given any reason why. Listing features you like of another product isn't a reason they shouldn't have done it. It's absolutely not embarrassing, and if anything it's embarrassing they didn't catch and do it sooner.

As a user it is because I can no longer use the subscription with the greater tooling ecosystem. As for Anthropic, they might not want to do this as they may lose users who decide to use another provider, since without the cost benefit of the subscription it doesn't make sense to stay with them and also be locked into their tooling.

The subscription is for their products? If you want to use their models in another product you can pay for the API usage.

Re: Anthropic blocks third-party use of Claude Code subscriptions

#108
Here's how to get a refund on the website (all automated):

1. Profile Icon -> Get Help

2. Send us a Message

3. Click 'Refund'

Big corpos only talk money, so it's the best you could do in this situation.

If you can't refund, and need to wait till sub runs out after cancelling, go to the OpenCode repo and rename your tools so they start with capital letters. That'll work around it. They just match on lowercase tool names of standard tools.

Re: Anthropic blocks third-party use of Claude Code subscriptions

#109
post #96

Earlier quoted context omitted.

inb4 Anthropic acquires Opencode

I actually wouldn't be that surprised by this. I'd be more surprised at the OC people folding (not the right word, but you get it) on some pretty heavy ambitions in favor of an acquisition.

the right word, keeping with card playing and poker terms would be book a win or win the hand, scoop the pot

Re: Anthropic blocks third-party use of Claude Code subscriptions

#110

The API is not banned only using the Claude Code subscription is I actually tried this several months back to do a regular API request using the CC subscription token and it gave the same error message So this software must have been pretending to be Claude Code in order to get around that A Claude Code subscription should not work with other software, I think this is totally fair

>A Claude Code subscription should not work with other software, I think this is totally fair

Strongly disagree. They are just trying to moat.

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