{"slug": "i-wired-a-free-no-key-deals-api-into-my-agent-7-mcp-tools-verified-discounts", "title": "I wired a free no-key deals API into my agent: 7 MCP tools, verified discounts", "summary": "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.", "body_md": "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.\n\nThe API: [https://fazy.com/developers](https://fazy.com/developers)\n\nThe 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)\n\nWhy 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.\n\nWe 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.\n\nMinimal example, curl, no key:\n\ncurl \"[https://fazy.com/api/v1/deals/search?q=robot+vacuum](https://fazy.com/api/v1/deals/search?q=robot+vacuum)\"\n\nResponse 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.\n\nRepo: [https://github.com/FazyFer/fazy-mcp](https://github.com/FazyFer/fazy-mcp)\n\nI 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.", "url": "https://wpnews.pro/news/i-wired-a-free-no-key-deals-api-into-my-agent-7-mcp-tools-verified-discounts", "canonical_source": "https://dev.to/dylanferrara/i-wired-a-free-no-key-deals-api-into-my-agent-7-mcp-tools-verified-discounts-491g", "published_at": "2026-10-02 04:02:28+00:00", "updated_at": "2026-10-02 04:14:23.704353+00:00", "lang": "en", "topics": ["ai-agents", "agent-protocols", "ai-tools", "developer-tools"], "entities": ["fazy.com", "FazyFer", "fazy-mcp", "GitHub"], "also_reported_by": [], "alternates": {"html": "https://wpnews.pro/news/i-wired-a-free-no-key-deals-api-into-my-agent-7-mcp-tools-verified-discounts", "markdown": "https://wpnews.pro/news/i-wired-a-free-no-key-deals-api-into-my-agent-7-mcp-tools-verified-discounts.md", "text": "https://wpnews.pro/news/i-wired-a-free-no-key-deals-api-into-my-agent-7-mcp-tools-verified-discounts.txt", "jsonld": "https://wpnews.pro/news/i-wired-a-free-no-key-deals-api-into-my-agent-7-mcp-tools-verified-discounts.jsonld"}}