Rainforest API vs SerpApi Google Shopping API for AI agents
Rainforest API is a paid third-party API that returns Amazon search, product, offer and review data in real time. SerpApi Google Shopping API is a paid third-party API that scrapes Google Shopping results and returns them as JSON.
The short answer
- Rainforest API: Getting Amazon product, price and review data without needing Amazon Associates sales.
- SerpApi Google Shopping API: Seeing what Google Shopping shows for a query, across many stores, without a seller account.
Side by side
| Rainforest API | SerpApi Google Shopping API | |
|---|---|---|
| Searches | Amazon search results by keyword or category, product pages by ASIN, deals and offers, and reviews. | Google Shopping results for a query, localised by country (gl) and location. |
| Returns | Ranked products with ASINs, title and price for searches; full product page data (bullets, descriptions, attributes, variations, category tree) by ASIN. | Position, title, price, rating, source (store) and a link per result, plus a token for a detailed product page. |
| Before the first call | A Traject Data account and API key. | A SerpApi account and API key. |
| Free | A free trial; the pricing page does not say how many requests it includes. | Free plan: 250 searches a month; only successful searches count. |
| Paid | Hobbyist plan $23 a month billed annually for 500 credits a month ($0.06 per extra credit). | Starter plan $25 a month for 1,000 searches. |
| Acting on a result | Data only; no buy, affiliate or checkout action is described. | Each result links to its Google Shopping page and names the store; no checkout. |
| Limits on keeping or showing results | Not stated on its pages | SerpApi keeps search data for 31 days, or not at all with its ZeroTrace mode (Enterprise only); its legal cover is for collecting the data, not for how you use it. |
| Coverage | Amazon marketplaces worldwide, including US, UK, DE, FR, CA and IN. | Any country Google Shopping serves, chosen with the gl country code. |
| MCP server | No official server listed | Official hosted MCP server at mcp.serpapi.com (needs a SerpApi API key). |
Where Openpath fits
Openpath has no products listed yet. Sellers can list a product on Openpath today, free, and agents will find it through the same search as jobs and businesses. Get listed.
Questions people ask
What do I need before I can use Rainforest API?
A Traject Data account and API key.
Is Rainforest API free?
A free trial; the pricing page does not say how many requests it includes.
What do I need before I can use SerpApi Google Shopping API?
A SerpApi account and API key.
Is SerpApi Google Shopping API free?
Free plan: 250 searches a month; only successful searches count.
Sources
Every line about another company comes from its own pages. Prices and terms change, so check the source before you rely on one.
Rainforest API, read on October 15, 2026:
- trajectdata.com/ecommerce/rainforest-api: “Search by keyword or category and return ranked products with ASINs”
- trajectdata.com/ecommerce/rainforest-api: “Pull complete product page data by ASIN: titles, bullets, descriptions, attributes, variations, category tree, and A+ content.”
- trajectdata.com/ecommerce/rainforest-api: “We support all major Amazon marketplaces including US, UK, DE, FR, CA, IN, and more.”
- docs.trajectdata.com/rainforestapi: “The Product Data API allows you to retrieve data from any Amazon domain worldwide in real-time.”
- trajectdata.com/ecommerce/rainforest-api/pricing: “Absolutely! Start a free trial to see results instantly.”
- trajectdata.com/ecommerce/rainforest-api/pricing: “$23/month ... Billed Annually”
- trajectdata.com/ecommerce/rainforest-api/pricing: “$0.06 per extra credit”
SerpApi Google Shopping API, read on October 15, 2026:
- serpapi.com/google-shopping-api: “Scrape Google Shopping results automatically with SerpApi. Position, price, rating, source, link, and more”
- serpapi.com/google-shopping-api: “Parameter defines the country to use for the Google search. It's a two-letter country code.”
- serpapi.com/pricing: “Only successful searches are counted toward your monthly searches. Cached, errored, and failed searches are not.”
- serpapi.com/legal: “Search data is retained for 31 days after the search is completed, after which it expires and is deleted automatically.”
- serpapi.com/legal: “SerpApi assumes liability for the lawful collection of public search data ... not for how that data is ultimately used.”
- serpapi.com/integrations/mcp: “SerpApi MCP Server is available as a hosted service at mcp.serpapi.com.”
- serpapi.com/pricing: “Free $ 0 / month Get Started 250 searches per month”
- serpapi.com/pricing: “Starter $ 25 / month Get Started 1,000 searches per month”