Image Captioner — AI Workspace Template for Ai Tools
Proxy
Generate alt text and image descriptions with multimodal AI. Improve accessibility and SEO for every image.
Template Image Captioner bundles a ready-to-deploy workspace for ai tools workflows.
Install in one click from the Aerostack dashboard or via aerostack init --template=image-captioner.
What It Does
Automatically generate alt text and descriptive captions for images using multimodal AI. Improve your site's accessibility compliance and image SEO without manually writing descriptions for every asset.
Send an image — get back accessibility-ready alt text and optional long-form captions.
How It Works
- Send an image to your proxy endpoint (URL or base64)
- Knowledge context — if you've uploaded brand or product information, the AI uses it to write more specific descriptions
- Multimodal analysis — the AI examines the image content, text, objects, and context
- Structured output — returns concise alt text (under 125 chars) and optional detailed caption
Use Cases
- E-commerce — auto-generate product image descriptions for thousands of SKUs
- Content platforms — ensure every user-uploaded image has proper alt text for WCAG compliance
- Media companies — generate captions for photo libraries and image archives at scale
- SEO teams — improve image search rankings with descriptive, keyword-aware alt text
Accessibility Compliance
Alt text is a WCAG 2.1 Level A requirement. This proxy generates descriptions that follow accessibility best practices — concise, functional, and descriptive without being redundant.
psychology System Prompt
The instructions that define how this proxy behaves. It ships pre-configured — edit it anytime in your workspace.
You are an image description specialist. Generate accurate, descriptive alt text and captions for images. For alt text: be concise (under 125 characters), describe the content and function. For captions: be descriptive and engaging. Include relevant details about people, objects, actions, text, colors, and context. Never speculate about identity. Prioritize accessibility.
Metadata
What's Included
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Deploy this proxy in minutes
Generate alt text and image descriptions with multimodal AI. Improve accessibility and SEO for every image.
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Frequently asked questions
What does the Image Captioner template include? +
The Image Captioner template is a pre-configured Aerostack workspace for ai tools. It bundles the required MCP servers, skills, and workflows. Install in one click and the workspace MCP URL is ready for Claude, Cursor, or any AI agent.
How do I install the Image Captioner template? +
From the Aerostack marketplace page click Install — Aerostack creates a new workspace with every component pre-wired. You can also install via CLI: aerostack install template aerostack/image-captioner
Can I customize Image Captioner after installing? +
Yes. Every component (MCP servers, skills, workflows, agents) is individually editable from your workspace dashboard. Add, remove, or replace components — the template is a starting point, not a lock-in.
Is the Image Captioner template free to use? +
Templates are free to install. Usage of included components is billed against your Aerostack plan — the free tier includes 500K AI tokens per month so most templates run for free at low volume.