WebFetch API

Lexmount WebFetch is the public API for fetching web pages, rendering when needed, and returning structured output without building your own scraping pipeline.

What It Covers

• POST /v1/extract for all-in-one structured extraction
• POST /v1/dom/dump for captured HTML and DOM snapshot reuse
• dom_id reuse between fetch and extract flows
• trace and raw DOM controls for debugging
• common HTTP and API error handling patterns

Authentication

• The API is currently in internal testing
• External requests must include both X-API-Key and X-Project-Id
• Create or copy them from https://browser.lexmount.cn/settings/api-keys
• For overseas access, use https://browser.lexmount.com/settings/api-keys and replace the endpoint with https://api.lexmount.com

Start Here

• Quick Start for the first request, response shape, and when to use dump-dom
• All-in-One Extract for the full /v1/extract request and response contract
• Dump DOM for engine selection, HTML capture, and dom_id reuse
• Common Errors for integration troubleshooting

Typical Workflow

1. Call POST /v1/extract with extract.url for the normal production path.
2. If you need workflow diagnostics, explicitly enable trace.include_steps.
3. If extraction fails or you need to inspect captured HTML, call POST /v1/dom/dump.
4. Reuse the returned dom_id in /v1/extract to separate fetch problems from extraction problems.

Common Output Fields

The most common result fields are:

• title
• description
• main_text
• final_url
• author
• publish_time
• links
• images
• engine
• dom_id