Hanzo Chat plugin system — built-in plugins, ChatGPT plugins, and custom plugin development.

Plugins

Hanzo Chat supports a plugin system that extends model capabilities with external tools and APIs. Plugins run server-side and are available to all conversations.

Built-in Plugins

Web Search

Search the web from within conversations:

# Enable Google Search plugin
GOOGLE_API_KEY=your-api-key
GOOGLE_CSE_ID=your-cse-id

Stable Diffusion

Generate images from text prompts:

# Enable Stable Diffusion
SD_WEBUI_URL=http://localhost:7860

Wolfram Alpha

Mathematical computation and data analysis:

WOLFRAM_APP_ID=your-app-id

Azure AI Search

Enterprise search over indexed documents:

AZURE_AI_SEARCH_SERVICE_ENDPOINT=https://your-service.search.windows.net
AZURE_AI_SEARCH_INDEX_NAME=your-index
AZURE_AI_SEARCH_API_KEY=your-key

ChatGPT Plugins

Hanzo Chat is compatible with OpenAI's ChatGPT plugin format. Any plugin that exposes an OpenAPI spec can be loaded:

Go to Plugin Store in Chat

Enter the plugin's manifest URL (e.g., https://example.com/.well-known/ai-plugin.json)

The plugin is loaded and available for use

MCP Tools (Recommended)

For new integrations, we recommend using MCP (Model Context Protocol) tools instead of legacy plugins. MCP provides a standardized interface with 260+ available tools.

See MCP Tools and Agents for MCP configuration.

# chat.yaml
mcpServers:
  filesystem:
    command: npx
    args: ["@hanzo/mcp-filesystem"]

  web:
    command: npx
    args: ["@hanzo/mcp-web"]

  github:
    command: npx
    args: ["@hanzo/mcp-github"]
    env:
      GITHUB_TOKEN: "${GITHUB_TOKEN}"

Custom Plugin Development

Build your own plugins using the OpenAPI specification:

Create a manifest

{
  "schema_version": "v1",
  "name_for_human": "My Plugin",
  "name_for_model": "my_plugin",
  "description_for_human": "Does something useful",
  "description_for_model": "Call this plugin to do something useful",
  "auth": { "type": "none" },
  "api": {
    "type": "openapi",
    "url": "https://my-plugin.example.com/openapi.yaml"
  }
}

Implement the API

Your API should match the OpenAPI spec. The model will call your endpoints based on the spec description.

Register in Chat

Add the manifest URL in Plugin Store or configure in chat.yaml.

Plugins

On this page