Coze Integration — Image Generation for AI Bots

Add image generation to Coze bots using workflow HTTP nodes or custom plugins. Generate images from HTML with RendShot.

Coze is a platform for building AI bots and agents. You can integrate RendShot in two ways: via Workflow HTTP nodes (no code) or via Custom Plugins (API-based tools the bot can call).

Prerequisites

A RendShot API key (get one free)
A Coze account at coze.com

Option 1: Workflow HTTP Node (Recommended)

Use the HTTP Request node in a Coze Workflow to call the RendShot API.

Create a Workflow

Go to your bot → Workflows → Create Workflow
Add an HTTP Request node

Configure the HTTP Request

Setting	Value
Method	`POST`
URL	`https://api.rendshot.ai/v1/image`
Headers	`Authorization: Bearer rs_live_YOUR_KEY`
Headers	`Content-Type: application/json`
Body Type	JSON

Set the request body

{
  "template_id": "social-card",
  "variables": {
    "title": "{{input.title}}",
    "author": "{{input.author}}"
  },
  "width": 1080,
  "height": 1080,
  "format": "png"
}

Use Coze's variable syntax ({{input.field}} or {{node.output}}) to pass dynamic data from the user's message or upstream nodes.

Use the result

The response contains a url field with the CDN-hosted image. Pass it to:

A Reply node to send the image back to the user
Another HTTP node to post it somewhere (Slack, social media, etc.)

Option 2: Custom Plugin

Create a custom plugin so the bot can call RendShot as a tool during conversations.

Create the plugin

Go to Personal → Plugins → Create Plugin
Choose Create by API
Add a tool:

Field	Value
Tool name	`generate_image`
API URL	`https://api.rendshot.ai/v1/image`
Method	`POST`

Define input parameters

Parameter	Type	Required	Description
`html`	string	No	Raw HTML to render (use if no template)
`template_id`	string	No	Template ID (use if templates are set up)
`variables`	object	No	Key-value pairs for template variables
`width`	integer	Yes	Image width in pixels
`height`	integer	Yes	Image height in pixels
`format`	string	No	`png`, `jpeg`, or `webp` (default: `png`)

Configure authentication

Set the Authorization header:

Type: Custom Header
Header name: Authorization
Header value: Bearer rs_live_YOUR_KEY

Define output

The API returns:

{
  "url": "https://assets.rendshot.ai/img/abc123.png",
  "id": "img_abc123",
  "format": "png",
  "width": 1080,
  "height": 1080
}

Map the url field as the output so the bot can display or reference the generated image.

Example Bot Scenarios

User: "Generate a card for my post: Building APIs That Scale"

Bot calls generate_image plugin:
  template_id: "social-card"
  variables: { title: "Building APIs That Scale" }
  width: 1080, height: 1080

Bot replies: "Here's your social card: [image URL]"

Product image assistant

User: "Create a promo banner for our new headphones, price $149"

Bot calls generate_image plugin:
  template_id: "product-card"
  variables: { name: "Wireless Pro", price: "$149", badge: "NEW" }
  width: 1200, height: 630

Bot replies with the generated banner image

URL Screenshots

For capturing live webpages, create a second tool pointing to the screenshot endpoint:

Field	Value
Tool name	`screenshot_url`
API URL	`https://api.rendshot.ai/v1/screenshot`
Method	`POST`
Parameters	`url` (string, required), `width` (integer), `height` (integer)

Troubleshooting

Issue	Fix
401 Unauthorized	Check the Authorization header — must include `Bearer` prefix
Plugin not called by bot	Ensure the plugin is enabled in your bot's tool list
Image not displaying in chat	Use the `url` from the response in a markdown image or direct link
Variables not substituted	Check Coze variable syntax matches your workflow/plugin configuration

Next steps

API Reference — all endpoints and parameters
Integrations Overview — other platforms

Coze Integration — Image Generation for AI Bots

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