Add PKCE support for Tetrate Agent Router Service

[johnlanda]

Adds PKCE support for Tetrate Agent Router Service, similar to openrouter PKCE signup flow

Tetrate when signed up via a "work address" currently will give goose users starter credit, which is ideal.

[michaelneale]

ok I pushed a fix to your branch to make it compile (small change on main with api) - but I can't seem to make it work with credits (I think). I can sign on, allw orks great, but I have 0 credit so it fails with an error message if I try to use it. In one case I used github, in another used my gmail - which I guess would be most obvious things people do - is there something else we need to do?

Provider request failed with status: 500 Internal Server Error. Payload: Some(Object {"error": String("internalservererror"), "message": String("Internal server error, please try again later")}). Returning error: ServerError("Some(Object {\"error\": String(\"internalservererror\"), \"message\": String(\"Internal server error, please try again later\")})")

I assume due to a balance of zero (I can see it in both accounts if I log in)? (it would need a non zero balance for it to work I guess?) - or am I seeing another bug with the flow and it didn't save the token?

[michaelneale]

I think this makes sense, as there is some tetrate specific handling between models going on here?

[johnlanda]

I'm going to simplify this a bit. We don't use the same prefixes and I don't think we need the cache control portion for anthropic either.

I followed this pattern from the openrouter one as I think we may find some nuances in model handling as we test. If we don't have a need for this, I can pull it out in favor a more generic openai compat provider or something like that.

[michaelneale]

so far - seems ok, follows exactly the same patterns as the openrouter sign up with PKCE

[johnlanda]

ok I pushed a fix to your branch to make it compile (small change on main with api) - but I can't seem to make it work with credits (I think). I can sign on, allw orks great, but I have 0 credit so it fails with an error message if I try to use it. In one case I used github, in another used my gmail - which I guess would be most obvious things people do - is there something else we need to do?

Provider request failed with status: 500 Internal Server Error. Payload: Some(Object {"error": String("internalservererror"), "message": String("Internal server error, please try again later")}). Returning error: ServerError("Some(Object {\"error\": String(\"internalservererror\"), \"message\": String(\"Internal server error, please try again later\")})")

I assume due to a balance of zero (I can see it in both accounts if I log in)? (it would need a non zero balance for it to work I guess?) - or am I seeing another bug with the flow and it didn't save the token?

I believe that TARS is set to give $5 credits to business emails at the moment. Let me know if you need me to arrange for some credits to test on the backend.

[michaelneale]

thanks @johnlanda looks like a bit of conflict resolving to do still - some deeper changes on main, if you get to it? but looking good.

[johnlanda]

@michaelneale I think I have all the conflicts sorted with the latest on main. Let me know if you have a chance to take another look!

[michaelneale]

taking a look shortly!

[michaelneale]

thanks @johnlanda - if you ask goose to run ./scripts/clippy-lint.sh and fix it - it will take care of those final things.

[michaelneale]

oh sometimes to see the test codepath errors I need to run cargo test --jobs 2 locally

[michaelneale]

ok this looks really great.

could make this the recommended one, especially if it sends people to sign up to get the credits

@johnlanda could change some wording, and make tetrate recommended? Wording could be similar to openrouter "get instant access to AI models, get started for free, automatically configured"? also is there an icon to use?

[michaelneale]

ok changed some wording and updated:

cc @spencrmartin this has now another card - which pushes "others" below the fold I believe - any thoughts on that?
if we remove the <OpenRouter> and ollama icons, there is enough space to stack, that is one option for now (as it is now it says to scroll, I fixed that, so that is ok too)

[michaelneale]

tested it every which way, and works well. Some follow ons before promoting to make sure people get sent to the right "get free credit" path, but very nice!