Manifest

What is Manifest?

Manifest is a service that turns any webpage into a structured action manifest for AI agents. Instead of returning raw HTML or a screenshot, it returns JSON describing clickable, fillable, and submittable elements on the page.

How to use Manifest?

Get an API key from app.manifest.omfang.io, then call the get_manifest tool with a URL. The server returns a structured manifest of actions. Manifest also works as a Python SDK (pip install manifest-api) and has a LangChain tool integration.

Key features of Manifest?

• Returns click, fill, and submit actions, not just page content
• Detects required fields, input types, and disabled elements
• Caches manifests for near-instant repeat calls
• Works as MCP server, Python SDK, or LangChain tool

Use cases of Manifest?

• Let an AI agent fill and submit web forms without hardcoded selectors
• Navigate sites with frequently changing UIs reliably
• Build browser-automation agents that reason about available actions

FAQ from Manifest

What’s the difference between Manifest and a browser automation tool like Browserbase?

Browserbase gives agent access to a browser; Manifest gives structured understanding of actions on a page. They are complementary, not competing.

Does Manifest require an API key?

Yes, get one at app.manifest.omfang.io. A free tier is available.

What does the response look like?

A JSON object with the page's current state, a list of actions (type, label, description, required flag), and navigation links.