Which Roo Code provider do I pick for a custom API?

OpenAI Compatible. It takes any base URL, key and model id, so the same provider runs the Claude, GPT and Grok models on https://aigrow.gg/v1.

Does Roo Code need tool calling?

Yes. Roo Code calls its tools through native tool calling only, and the endpoint passes OpenAI tool calls through, so a model that supports them works.

Should the Base URL end in /v1?

Yes. Roo Code adds /chat/completions to the Base URL, so it is https://aigrow.gg/v1. Without /v1 the requests fail with a 404.

Roo Code with an OpenAI compatible provider

Fill these four fields in the Roo Code settings, and Roo Code runs on Claude, GPT and Grok models through your AIGROW key.

Buy API credit

Already have a code? Redeem it on API access, then create a key.

Roo Code settings, gear icon

API Provider:  OpenAI Compatible
Base URL:      https://aigrow.gg/v1
API Key:       ag_your_key_here
Model:         claude-opus-5.5

Swap ag_your_key_here for a key from API access.

Where the setting lives

Open the settingsClick the gear icon in the Roo Code panel.

Pick the providerSet API Provider to OpenAI Compatible.

Fill the fieldsPaste the Base URL, your key in API Key and a model id from the list below in Model.

Set the context windowUnder Model Configuration, set Context Window to 1000000. The prices there only feed Roo Code’s own estimate; API access shows what each request really cost.

Which model to use

Put the id in exactly as it is written here.

Claude Opus 5.5claude-opus-5.5: The default in every block on this page, and the cheapest Claude model here per token sent and received. Context: 1,000,000 tokens.
Grok 4.7grok-4.7: The lowest output price here. Its context is half the size of the Claude models. Context: 500,000 tokens.
GPT-6 Astragpt-6-astra: For a GPT model. It costs as much per token as Fable, more than Opus. Context: 1,050,000 tokens.
Claude Fable 5.1claude-fable-5.1: Costs more per token than Opus. Compare the two on the coding leaderboard before you switch. Context: 1,000,000 tokens.

The price list has every id and its credit rate, Claude API pricing has the list prices, and the coding leaderboard compares the models on coding prompts.

Check that it works

First the key on its own, then Roo Code with it.

The key

Ask for the model list. It needs a valid key and costs nothing.

curl https://aigrow.gg/v1/models -H "Authorization: Bearer ag_your_key_here"

A working key gets the list back:

{
  "object": "list",
  "data": [
    { "id": "claude-opus-5.5", "object": "model", ... },
    { "id": "claude-fable-5.1", "object": "model", ... },
    { "id": "gpt-6-astra", "object": "model", ... },
    { "id": "claude-sonnet-5.5", "object": "model", ... },
    { "id": "gpt-6.1-sol", "object": "model", ... },
    { "id": "grok-4.7", "object": "model", ... },
    ...
  ],
  "has_more": false
}

Roo Code

Start a new task in the Roo Code panel and send this prompt.

Reply with the word ready

A working setup answers in the chat:

ready

When it fails

The Roo Code errors first, then the answers the endpoint gives any tool.

404 on every request: The Base URL is missing /v1. On the OpenAI protocol it is https://aigrow.gg/v1.
My tool says 401 or authentication error: The key is missing or mistyped. Copy it again from API access on the dashboard, and make sure it is sent as the key, not as a model name. A revoked key fails the same way: create a new one and swap it in.
I get 402 or a message about credit: Your balance is empty. Open API access on the dashboard, redeem a code or buy another pack, and the next request goes through. Nothing else needs to change.
It says 404 or Unknown model: The model has to be one the endpoint serves, for example claude-opus-5.5. The provider’s own spellings work too (claude-opus-5-5, anthropic/claude-opus-5.5), but a dated id or any model outside the catalogue is rejected before the request is forwarded, and nothing is billed. Request GET /v1/models with your key for the live list, or read the ids on the price list.
Requests are rejected with 429: The endpoint’s capacity is shared by every buyer: about 20 requests a minute and 4 at once. Each 429 carries a retry-after header, and the OpenAI and Anthropic SDKs wait that long and retry on their own. In a loop of your own, wait the seconds it names or lower your concurrency.
The model is unavailable right now: A 404 that says the model is not available right now means it is briefly down at the upstream provider, not a problem with your key or balance. Retry in a moment or send the request to another model.
I get a 502 or 503: A transient upstream or configuration hiccup, not a charge against your balance. Retry the request; if it keeps failing, reach us through the store and we will look into it.

What does not work through AIGROW

Live web search inside the model. A web search tool sent with a request is answered from what the model already knows, with no live results. A tool that fetches pages on your own machine still works.
Any endpoint past these three: /v1/messages, /v1/chat/completions and /v1/models. The Responses API, embeddings and token counting answer 404.
Router fields such as models, route, provider and plugins. They are dropped, so a request always goes to the one model it names.

What a month of Roo Code costs

Roo Code is billed per token at the credit rates in the price list. An agent sends the whole conversation again with each step, so a long task costs more than its last message suggests; the activity log on API access shows what each request cost.

Questions about Roo Code and a custom API

Which Roo Code provider do I pick for a custom API?: OpenAI Compatible. It takes any base URL, key and model id, so the same provider runs the Claude, GPT and Grok models on https://aigrow.gg/v1.
Does Roo Code need tool calling?: Yes. Roo Code calls its tools through native tool calling only, and the endpoint passes OpenAI tool calls through, so a model that supports them works.
Should the Base URL end in /v1?: Yes. Roo Code adds /chat/completions to the Base URL, so it is https://aigrow.gg/v1. Without /v1 the requests fail with a 404.

Sources: Roo Code OpenAI Compatible · Roo Code Anthropic. Read 21 October 2026.

Set up another tool

Claude CodeAnthropic protocol
Four environment variables, in the shell or in settings.json.
ClineOpenAI protocol
The OpenAI Compatible provider, four fields in the settings screen.
Kilo CodeOpenAI protocol
A custom provider in the Providers tab; the model list fills itself.
ContinueOpenAI protocol
A models entry in config.yaml, with provider openai and an apiBase.
AiderOpenAI protocol
OPENAI_API_BASE and OPENAI_API_KEY, then openai/ before the model id.
OpenCodeOpenAI protocol
A provider block in opencode.json and the key through /connect.
ZedAnthropic and OpenAI protocols
An Anthropic compatible provider for Claude, an OpenAI compatible one for GPT and Grok.
GooseOpenAI protocol
The OpenAI provider with OPENAI_HOST, or a custom provider file.
Vercel AI SDKAnthropic and OpenAI protocols
The OpenAI Compatible provider for every model, or the Anthropic provider for Claude.
OpenAI Agents SDKOpenAI protocol
Your own AsyncOpenAI client, switched to chat completions, with tracing off.
LangChainAnthropic and OpenAI protocols
ChatOpenAI with base_url for every model, or ChatAnthropic for Claude.

The API guide has the SDKs, curl, the endpoints and the rate limits.

Paste the block and Roo Code runs on your credit.

Buy a credit pack, redeem the code from your email on API access, create a key and put it in place of ag_your_key_here.

Buy API credit See prices and models