Ollama Amazon Parser

Last Wrap Hero priced gift wrapping from the customer's Amazon link, which meant parsing product pages for title, price, size, quantity, and roll dimensions. Regex against Amazon's markup broke every few weeks, and each product type — paper, ribbon, boxes, tags, bows — needed its own brittle rules.

A small Express service accepts a URL, ASIN, or raw HTML and asks a locally hosted llama3.2 model, through Ollama, to return the product as a fixed JSON schema: type, title, price, brand, size, quantity, dimensions, roll length and width. The schema is enforced on the way out so the caller gets typed fields or an explicit error, never prose. It is deliberately a separate service, so the main application treats it as an optional dependency and falls back to the old regex parser when it is unreachable.

Ran alongside Last Wrap Hero during the 2025 season, turning a maintenance chore into a schema definition. Small in scope, but it established two habits that carried into everything after: self-hosted inference for anything touching private data, and treating the model as a component behind a typed contract with a fallback.