VS Code Extensions

Continue

Example config.yaml model entry (uses the latest flagship Claude Opus 4.7):

name: Claude API
version: 1.0.0
schema: v1
models:
  - name: Claude Opus 4.7
    provider: anthropic
    model: claude-opus-4.7
    apiBase: https://api.llmsrelay.com
    apiKey: sk-cs4-YOUR_KEY
    roles:
      - chat
      - edit

Cline

Use OpenAI Compatible provider:

• Custom BaseURL: https://api.llmsrelay.com/v1
• API Key: from the dashboard

Roo Code

Use OpenAI Compatible provider:

• Custom BaseURL: https://api.llmsrelay.com/v1
• API Key: from the dashboard

Kilo Code

Kilo Code can use LLMsRelay through two custom providers: Anthropic Messages for Claude models and OpenAI Responses for GPT/Codex models. Keep them as separate providers because the wire protocols are different.

1. Add the provider

Open Kilo's provider settings or edit the user-level kilo.jsonc file. The example below is portable and contains no real credentials:

{
  "$schema": "https://app.kilo.ai/config.json",
  "provider": {
    "llmsrelay-anthropic": {
      "name": "LLMsRelay Anthropic Messages",
      "npm": "@ai-sdk/anthropic",
      "options": {
        "baseURL": "https://api.llmsrelay.com/v1"
      },
      "models": {
        "claude-opus-5": { "name": "claude-opus-5", "reasoning": true },
        "claude-fable-5": { "name": "claude-fable-5", "reasoning": true },
        "claude-opus-4.8": { "name": "claude-opus-4.8", "reasoning": true },
        "claude-opus-4.7": { "name": "claude-opus-4.7", "reasoning": true },
        "claude-opus-4.6": { "name": "claude-opus-4.6", "reasoning": true },
        "claude-sonnet-5": { "name": "claude-sonnet-5", "reasoning": true },
        "claude-sonnet-4.6": { "name": "claude-sonnet-4.6", "reasoning": true },
        "claude-haiku-4.5": { "name": "claude-haiku-4.5", "reasoning": true }
      }
    },
    "llmsrelay-openai": {
      "name": "LLMsRelay OpenAI Responses",
      "npm": "@ai-sdk/openai",
      "env": ["OPENAI_API_KEY"],
      "options": {
        "baseURL": "https://api.llmsrelay.com/v1"
      },
      "models": {
        "gpt-5.3-codex-spark": { "name": "gpt-5.3-codex-spark", "reasoning": true },
        "gpt-5.4-mini": { "name": "gpt-5.4-mini", "reasoning": true },
        "gpt-5.4": { "name": "gpt-5.4", "reasoning": true },
        "codex-auto-review": { "name": "codex-auto-review", "reasoning": true },
        "gpt-5.3-codex-spark-openai-compact": { "name": "gpt-5.3-codex-spark-openai-compact", "reasoning": true },
        "gpt-5.5": { "name": "gpt-5.5", "reasoning": true },
        "gpt-5.5-openai-compact": { "name": "gpt-5.5-openai-compact", "reasoning": true },
        "gpt-5.6-terra": { "name": "gpt-5.6-terra", "reasoning": true },
        "gpt-5.4-openai-compact": { "name": "gpt-5.4-openai-compact", "reasoning": true },
        "gpt-5.4-mini-openai-compact": { "name": "gpt-5.4-mini-openai-compact", "reasoning": true },
        "gpt-5.6-sol": { "name": "gpt-5.6-sol", "reasoning": true }
      }
    }
  }
}

2. Add the API key securely

Add a Basic key to the Anthropic provider and a separateCodex key to the OpenAI provider through Kilo's credential dialog or the /connect flow. Use separate placeholders such as sk-cs4-YOUR_BASIC_KEY and sk-cs4-YOUR_CODEX_KEY. Do not put a real key in kilo.jsonc, workspace files, screenshots, or a public repository.

3. Select a model

Select the exact ID returned by GET /v1/models. Claude IDs belong to the Anthropic provider; GPT/Codex IDs belong to the OpenAI Responses provider. For example, use gpt-5.5, not a shortened alias. OpenAI models are sent to /v1/responses; Claude models are sent to /v1/messages.

Windows setup (all extensions)

On Windows, Continue, Cline, Roo Code, and Kilo Code use the same gateway, but their provider settings differ. Follow the shared environment-variable steps below, then use the extension-specific notes.

1. Prerequisites

• VS Code 1.80+ (latest recommended)
• Node.js LTS — required only if you use Continue's CLI/MCP features. Verify with node -v in PowerShell.
• Your LLMsRelay API keys: sk-cs4-YOUR_BASIC_KEY for Claude and sk-cs4-YOUR_CODEX_KEY for OpenAI.

2. Set environment variables (PowerShell)

Open PowerShell (not cmd.exe) and run. setx writes to the user environment permanently — values become available in every new terminal and process.

setx ANTHROPIC_BASE_URL "https://api.llmsrelay.com"
setx ANTHROPIC_API_KEY "sk-cs4-YOUR_BASIC_KEY"
setx OPENAI_BASE_URL "https://api.llmsrelay.com/v1"
setx OPENAI_API_KEY "sk-cs4-YOUR_CODEX_KEY"

GUI alternative: press Win+R → type sysdm.cpl → Advanced → Environment Variables → add the same five variables under "User variables".

3. Fully restart VS Code

VS Code caches environment variables at launch. After setx, close every VS Code window, then open Task Manager (Ctrl+Shift+Esc) and end any remaining Code.exe processes before reopening. Otherwise the extensions will still see old values.

4. Per-extension Windows notes

• Continue — config lives at %USERPROFILE%\.continue\config.yaml. Open it with notepad %USERPROFILE%\.continue\config.yaml in PowerShell.
• Cline / Roo Code — open the extension's settings panel, choose OpenAI Compatible, paste Base URL https://api.llmsrelay.com/v1 and your API key. The env vars from step 2 are used as defaults for new tasks but the UI values always win.
• Kilo Code — add the two custom providers from the Kilo Code section above. Store the key for each provider through Kilo credentials or /connect, and select an exact model ID from GET /v1/models.

5. Using WSL / Remote-WSL?

Windows env vars do not propagate into the WSL distro. Add the same variables to ~/.bashrc (or ~/.zshrc) inside WSL:

export ANTHROPIC_BASE_URL="https://api.llmsrelay.com"
export ANTHROPIC_API_KEY="sk-cs4-YOUR_BASIC_KEY"
export OPENAI_BASE_URL="https://api.llmsrelay.com/v1"
export OPENAI_API_KEY="sk-cs4-YOUR_CODEX_KEY"

6. Troubleshooting

• setx never affects the current terminal — open a new one.
• In PowerShell always wrap values in double quotes, especially URLs with /.
• Behind a corporate proxy: also set setx HTTPS_PROXY "http://proxy.company:8080".
• Antivirus / firewall blocking requests — whitelist the host api.llmsrelay.com.
• Wrong model is being called — see Common Claude Code configuration mistakes.

Wrong model is being used?