---
canonical: 'https://htmlcsstoimage.com/features/api-templates-for-ai'
title: 'Dynamic Image Templates for AI Agent Tools | HTML/CSS to Image'
description: 'Back AI image tools with versioned HTML/CSS templates, stable IDs, named inputs, reusable assets, and controlled rendering settings.'
---

# Back agent image tools with a controlled HTML/CSS layout

Let agents supply structured text and image values while a versioned HTML/CSS template controls the full layout, assets, and rendering behavior.

## Key capabilities

- HTML and CSS layouts
- Reusable assets and settings
- Versioned template IDs

## Create templates with HTML and CSS

Create a template through the API and store its HTML, CSS, fonts, images, dimensions, browser settings, and output options. Image requests then send the template ID and named values instead of the full layout.

## Publish changes as new versions

Updating an API template publishes another version under the same ID. Render the latest version or choose a specific version without changing the template's named values.

Render a published template by sending its named values to `POST https://hcti.io/v1/image/{template_id}`. The response includes the generated image ID and hosted URL.

## MCP Integration

Connect an MCP-compatible client to `https://mcp.hcti.io` with OAuth. The tools use the connected organization's HTML/CSS to Image account, permissions, and plan limits.

- The `list_templates` tool returns the organization's available templates and their IDs.
- The `list_template_versions` tool returns the saved versions for a selected template.
- The `create_templated_image` tool renders a template with the named values supplied by the client.
- The `create_template` tool creates an HTML/CSS API template. The `update_template` tool publishes a new version under an existing template ID.

[Read the full MCP docs](https://docs.htmlcsstoimage.com/integrations/mcp/).

## Turn agent responses into consistent images

### Summary images

Map fields from an agent response into a fixed visual summary instead of asking the model to write layout code.

### Image generation tools

Give an agent named values to fill instead of asking it to write HTML.

### Visual response cards

Use fields from an agent response to render branded cards, plans, comparisons, and recommendations.

### Content variation

Let agents change copy and imagery while the template preserves typography, spacing, and layout.

## Get started

REST API requests require an HTML/CSS to Image account and should be authenticated from trusted application code. Check the API docs and pricing for current setup instructions, limits, and feature availability.

- [View the full feature page](https://htmlcsstoimage.com/features/api-templates-for-ai)
- [Browse all features](https://htmlcsstoimage.com/features.md)
- [Start free](https://htmlcsstoimage.com/join)
- [View pricing](https://htmlcsstoimage.com/pricing.md)
- [Read the template API docs](https://docs.htmlcsstoimage.com/getting-started/templates/)
- [Read the MCP docs](https://docs.htmlcsstoimage.com/integrations/mcp/)