Pricing pages
Pull plan names, prices, and feature lists from competitor pricing without maintaining selectors.
AI-powered JSON extraction
Structured data from any page
Skip brittle CSS selectors that break every redesign. Send a URL plus a prompt and get JSON back. Optional schema for strict field validation.
Works with your agent stack
Use cases
Extract what you describe, not what you guess
Pricing tables, product specs, and directory listings change often. Prompt-based extraction adapts when layout shifts.
Product catalogs
Extract SKU, title, and availability from listing pages into your database schema.
Agent-friendly output
JSON responses drop straight into tool results for LLM reasoning or downstream ETL.
Technical approach
Render first, extract second
We load and render the page, then run AI extraction against the visible content. JavaScript-heavy sites return complete data.
Plain-English prompts
Describe the fields you need. No XPath or CSS required for the first version.
Optional JSON schema
Pass a schema object when you need strict types and required fields in the response.
Bring your model key
Use your own model credentials when you want control over extraction cost and model choice.
Integration
From URL to typed JSON
Define prompt
POST url and prompt to /v1/json. Add schema when you need strict structure.
View docs →Schedule refreshes
Re-run on a cron. Cache keeps unchanged pages free on repeat calls.
Pricing →Combine with crawl
Extract JSON from every page in a site crawl for full catalog coverage.
Site crawl →001Do I need a schema?
No. A plain-English prompt is enough. Add schema when you need guaranteed field names and types.
002What model is used?
You can bring your own model key. CaptureWeb handles render and passes page content to extraction.
003How is this different from /scrape?
/json uses AI to interpret page content. Selector-based scrape is better when you have stable DOM paths.
Explore more
Web capture for every workflow
Data extraction
Brand extraction
Turn any company domain into a structured brand profile.
Learn more →Data extractionSales & outreach
Screenshot the prospect site and pull Markdown for the model writing the email.
Learn more →AI & agentsRAG pipelines
Feed your vector database with fresh, clean web content stripped of boilerplate.
Learn more →