Editors and IDEs

Cursor, Trae, Cline, Roo Code, and Continue can all connect to Essevin. Choose the provider type for the model first, then enter its Base URL, plan key, and model ID.

Choose the provider type by model

Model	Provider type	Base URL	Key
GPT models such as gpt-5.5 or gpt-5.4	OpenAI Compatible	`https://api.essevin.com/v1`	OpenAI or Codex plan key
Gemini models such as gemini-3.5-flash	OpenAI Compatible	`https://api.essevin.com/v1`	Gemini plan key
Claude models such as claude-sonnet-4-6	Anthropic	`https://api.essevin.com` without `/v1`	Claude plan key

Copy all current model IDs and see current pricing in the model catalog after signing in.

Confirm the model and plan key

Call GET /v1/models with the target plan key and copy an ID from the response.

Add a custom provider

Use the table above to set the provider type, Base URL, API key, and model ID.

Send a minimal test

Select the new model and send “Reply only with ok.” Enable tools, images, or long-context features only after the basic request works.

A Claude plan key does not support OpenAI Compatible mode. That mode uses an OpenAI protocol path and returns a 404. If the extension has no Anthropic provider type, use Cline, Roo Code, Continue, Trae, or the web console.

Cline and Roo Code

In extension settings, set API Provider to OpenAI Compatible for GPT models or Anthropic for Claude models. Enter the matching Base URL, API key, and model ID.

Continue

# models section in ~/.continue/config.yaml
models:
  - name: Essevin GPT
    provider: openai
    model: gpt-5.5
    apiBase: https://api.essevin.com/v1
    apiKey: sk-openai-plan-key
  - name: Essevin Claude
    provider: anthropic
    model: claude-sonnet-4-6
    apiBase: https://api.essevin.com
    apiKey: sk-claude-plan-key

Cursor

GPT or Gemini: In Cursor Settings → Models → API Keys, enter the matching plan key, enable Override OpenAI Base URL, set https://api.essevin.com/v1, and add the model ID.
Claude: Use the Anthropic API Key field and override the Anthropic Base URL with https://api.essevin.com in a recent Cursor release.

Built-in features such as Tab completion still use Cursor's service. These settings apply to the custom model selected in Chat.

Trae

Open Settings, Models, then Add model. Select OpenAI Compatible for GPT or Anthropic for Claude. Enter the matching Base URL, API key, and model ID.

Keys follow plan groups: Claude models require a Claude plan key and Anthropic provider; GPT models require an OpenAI plan key and OpenAI Compatible provider. The same rule applies to Zed, JetBrains AI, and other editors.

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