API Usage Guide

Connection

Base URL	`https://api.nghimmo.com`
Key	sk-xxxxxxxxxxxx

No /v1. Cursor Pro is the exception — add /v1.

Models

Strongest, for hard tasks. Newest: nghi/claude-opus-5.

nghi/claude-opus-5
nghi/claude-opus-5-thinking
nghi/claude-opus-4.8
nghi/claude-opus-4.8-thinking
nghi/claude-opus-4.7
nghi/claude-opus-4.7-thinking
nghi/claude-opus-4.6
nghi/claude-opus-4.6-thinking
nghi/claude-opus-4.5
nghi/claude-opus-4.5-thinking

Daily driver. Newest: nghi/claude-sonnet-5.

nghi/claude-sonnet-5
nghi/claude-sonnet-4.6
nghi/claude-sonnet-4.6-thinking
nghi/claude-sonnet-4.5
nghi/claude-sonnet-4.5-thinking
nghi/claude-sonnet-4
nghi/claude-sonnet-4-thinking

Light work, cheap on tokens.

nghi/claude-haiku-4.5
nghi/claude-haiku-4.5-thinking

Server picks the model.

nghi/auto

Setup

Install Claude Desktop: claude.com/download — not Microsoft Store.
Download the tool, paste key → Apply:
macOS Windows
Reopen the app → Continue with Gateway.

If your OS blocks the tool: macOS right-click → Open · Windows → More info → Run anyway.

New key: paste → Apply. Remove: Reset.

Mac — tool OK but Gateway not showing

Install Claude from the .dmg at claude.com/download — not the App Store.
Cmd+Q to fully quit Claude before running the tool.
If double-click fails, use Terminal:

cd ~/Downloads
xattr -d com.apple.quarantine ClaudeKeyTool.command 2>/dev/null
chmod +x ClaudeKeyTool.command
bash ClaudeKeyTool.command

Verify config was written:

ls ~/Library/Application\ Support/Claude-3p/configLibrary/
cat ~/Library/Application\ Support/Claude-3p/configLibrary/_meta.json

Open Claude → choose Continue with Gateway (do not sign in to claude.ai). Tool log: ~/Library/Logs/claude-key-tool.log

npm install -g @anthropic-ai/claude-code
Download into your code folder, double-click → enter key:
Windows Mac

Manual setup

Edit ~/.claude/settings.json:

{
  "env": {
    "ANTHROPIC_BASE_URL": "https://api.nghimmo.com",
    "ANTHROPIC_AUTH_TOKEN": "sk-xxxxxxxxxxxx",
    "ANTHROPIC_MODEL": "nghi/claude-opus-4.8",
    "ANTHROPIC_DEFAULT_OPUS_MODEL": "nghi/claude-opus-5",
    "ANTHROPIC_SMALL_FAST_MODEL": "nghi/claude-haiku-4.5"
  }
}

Install the Claude Code extension (Anthropic).
Close all IDE windows → download → double-click → enter key:

Tool Windows Mac

VS Code .bat .command

Cursor .bat .command

Antigravity .bat .command

Tool	Windows	Mac
VS Code	.bat	.command
Cursor	.bat	.command
Antigravity	.bat	.command

Already used ClaudeKeyTool: just Ctrl+Shift+P → Reload Window.

Ctrl+Shift+J → Models
Enable Override OpenAI Base URL → https://api.nghimmo.com/v1
Paste key → Verify → add nghi/claude-sonnet-4.6

Turn off all of Cursor's default models.

Chatbox → Settings → Model Provider → Claude
API Host https://api.nghimmo.com/v1 · Key sk-...
Add nghi/claude-sonnet-4.6 → Test Model

Connection

Base URL	`https://api.nghimmo.com/v1`
Key	sk-xxxxxxxxxxxx

Always with /v1. Grok keys don't run Claude Code.

Models

Send no model and you get nghi/grok-4.5.

Model	Use for
nghi/grok-4.5	Strongest — code, agents
nghi/grok-4.3	1M context, cheaper
nghi/grok-4.20-0309-reasoning	With reasoning
nghi/grok-4.20-0309-non-reasoning	Fast, cheap
nghi/grok-4.20-multi-agent-0309	Deep research
nghi/grok-build-0.1	Code / agent
nghi/grok-composer-2.5-fast	Fast coding in Cursor
nghi/grok-4.5-latest nghi/grok-build-latest	Aliases of grok-4.5
nghi/grok-3-mini nghi/grok-3-mini-fast	Legacy

These 11 only. A wrong name errors out. No image/video models.

Setup

Ctrl+Shift+J → Models
Enable Override OpenAI Base URL → https://api.nghimmo.com/v1
Paste key → Verify → add nghi/grok-4.5

Turn off all of Cursor's default models.

Cline / Roo Code: Settings → API Provider OpenAI Compatible → fill in:

Base URL : https://api.nghimmo.com/v1
API Key  : sk-xxxxxxxxxxxx
Model    : nghi/grok-4.5

Continue: edit ~/.continue/config.yaml:

models:
  - name: Nghimmo Grok
    provider: openai
    model: nghi/grok-4.5
    apiBase: https://api.nghimmo.com/v1
    apiKey: sk-xxxxxxxxxxxx

LobeChat, NextChat, Open WebUI… — any OpenAI-compatible app:

Base URL : https://api.nghimmo.com/v1
API Key  : sk-xxxxxxxxxxxx
Model    : nghi/grok-4.5

Chatbox → Settings → Model Provider → OpenAI API Compatible
API Host https://api.nghimmo.com/v1 · Key sk-...
Add nghi/grok-4.5 → Test

Connection

Base URL	`https://api.nghimmo.com/v1`
Key	sk-xxxxxxxxxxxx

Always with /v1. Codex keys don't run Claude Code.

Models

Model	Use for
nghi/gpt-5.5	Default — stable
nghi/gpt-5.6-sol	Strongest, token-hungry
nghi/gpt-5.6-terra	Balanced
nghi/gpt-5.6-luna	Fast, cheap
nghi/gpt-5.4	Large context
nghi/gpt-5.4-mini	Small tasks, subagents
nghi/codex-auto-review	Automatic code review

Codex keys reject Claude and Grok models.

Setup

Install ChatGPT from Microsoft Store (by OpenAI).
Download the tool → Desktop → paste key → Sign in:
macOS Windows
Quit ChatGPT fully, reopen → use ChatGPT Work / Codex.

Remove: tool → Reset.

Ctrl+Shift+J → Models
Enable Override OpenAI Base URL → https://api.nghimmo.com/v1
Paste key → Verify → add nghi/gpt-5.5

Turn off all of Cursor's default models.

Cline / Roo Code: Settings → API Provider OpenAI Compatible → fill in:

Base URL : https://api.nghimmo.com/v1
API Key  : sk-xxxxxxxxxxxx
Model    : nghi/gpt-5.5

Continue: edit ~/.continue/config.yaml:

models:
  - name: Nghimmo Codex
    provider: openai
    model: nghi/gpt-5.5
    apiBase: https://api.nghimmo.com/v1
    apiKey: sk-xxxxxxxxxxxx

LobeChat, NextChat, Open WebUI… — any OpenAI-compatible app:

Base URL : https://api.nghimmo.com/v1
API Key  : sk-xxxxxxxxxxxx
Model    : nghi/gpt-5.5

Chatbox → Settings → Model Provider → OpenAI API Compatible
API Host https://api.nghimmo.com/v1 · Key sk-...
Add nghi/gpt-5.5 → Test

API Usage Guide

Connection

Models

Setup

Connection

Models

Setup

Connection

Models

Setup

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