I wired a free no-key deals API into my agent: 7 MCP tools, verified discounts

The founder of price-tracking site fazy.com integrated the company's free, keyless deals API into an agent via a seven-tool MCP server, exposing search_deals, get_deal, get_price_history, similar_deals, list_categories, catalog_slice and post_brief. Each deal carries a verified discount_pct alongside current and reference prices, and the founder says an internal audit found 83% of merchants' "was" prices were never actually charged during the observation window. The API is read-only, rate-limited to 60 requests per minute, and the MCP server and repo are publicly available.

I built fazy.com, a price-checked deals site. Last week I needed deal data inside an agent without scraping, so I used our own API. It is free, no key, 60 req/min, and read-only. Here is the whole integration. The API: https://fazy.com/developers https://fazy.com/developers The MCP server: https://fazy.com/mcp https://fazy.com/mcp 7 tools: search deals, get deal, get price history, similar deals, list categories, catalog slice, post brief Why it is different from scraping: every deal carries a verified discount pct plus the current and reference price, and get price history returns the recorded price changes with dates. So the agent can answer "is this actually a good deal" instead of trusting the store's "was" price. We ran our own catalogue against those "was" prices: 83% of them were never the price while we watched methodology: https://fazy.com/blog/was-prices-we-never-saw https://fazy.com/blog/was-prices-we-never-saw . That is the dataset your agent gets to query. Minimal example, curl, no key: curl " https://fazy.com/api/v1/deals/search?q=robot+vacuum https://fazy.com/api/v1/deals/search?q=robot+vacuum " Response includes discount pct, price, reference price, merchant, in stock, and a url field per deal. For MCP clients, point at https://fazy.com/mcp https://fazy.com/mcp and the tools show up. Repo: https://github.com/FazyFer/fazy-mcp https://github.com/FazyFer/fazy-mcp I am the founder, so obviously biased, but the API is free and the data is the interesting part. Happy to answer questions about the price-tracking methodology.