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API and MCP server

Use EauIndex inside your AI assistant, or read its data with software. Free, read-only, no key, with a link back.

Use EauIndex in your assistant

Every assistant connects to the same MCP server: https://eauindex.com/mcp (streamable HTTP, no sign-in). Ask it things like "What's the cheapest price for Creed Aventus 100 ml?" or "Is $300 a good price for it?" and it answers with US prices and the EauIndex page to check.

In ChatGPT

Until EauIndex is listed in the ChatGPT plugin directory, add it in developer mode (availability depends on your plan and workspace settings).

  1. Open Settings, then Security and login, and turn on Developer mode.
  2. Go to chatgpt.com/plugins and select the plus button.
  3. Name it EauIndex and enter the MCP server URL https://eauindex.com/mcp. No authentication.
  4. Create the connection, then start a new chat, add EauIndex from the tools menu and ask about a fragrance.

In Claude

Works on every Claude plan (the Free plan allows one custom connector). On Team and Enterprise plans an Owner adds it for the organization.

  1. Go to Customize, then Connectors, and click Add custom connector.
  2. Name it EauIndex and enter the server URL https://eauindex.com/mcp. Choose No sign-in if asked.
  3. Click Add. In a chat, turn EauIndex on from the + menu under Connectors and ask about a fragrance.

In Perplexity

Custom connectors are available on Perplexity's paid plans.

  1. Open Account settings, then Connectors, and choose Custom connector, then Remote.
  2. Name it EauIndex, enter the MCP server URL https://eauindex.com/mcp, transport Streamable HTTP, authentication None.
  3. Accept the notice and click Add, then turn the connector on in a search.

Other MCP clients: { "mcpServers": { "eauindex": { "url": "https://eauindex.com/mcp" } } }

MCP tools

  • search_fragrances: find a fragrance's id by name
  • fragrance_price: every size with the brand's US list price and today's lowest store price, store and stock
  • price_history: daily lowest US store price for one size
  • price_check: is a price you saw a good deal
  • dupes: alternatives other brands state are inspired by it, with their own wording and source
  • lowest_today: new 90-day lows, or today's biggest discounts vs list price
  • retailer_info: authorized seller or discounter, returns, shipping, testers
  • gift_guide: gift ideas by budget or recipient
  • list_price_changes: which houses changed their US list prices

Every result includes the eauindex.com page to cite. Prices are US stores in US dollars. EauIndex does not sell fragrances, and assistant answers carry no affiliate links.

JSON API

  • GET https://eauindex.com/api/search?q=delina: find fragrances
  • GET https://eauindex.com/api/guides/gifts/under-100: a gift guide with its rule, answer and list
  • GET https://eauindex.com/api/fragrances/{brand}/{fragrance}: sizes, list prices, store prices and history once feeds connect, dupes, answer text
  • GET https://eauindex.com/api/fragrances/{brand}/{fragrance}/check?price=89: is that price a good one
  • GET https://eauindex.com/api/brands/{brand}: a brand's price list
  • GET https://eauindex.com/api/boards/lows, https://eauindex.com/api/boards/drops, https://eauindex.com/api/boards/deals
  • GET https://eauindex.com/api/retailers/{retailer}: authorized or discounter, typical discount

Please cache responses for a day; prices update once daily. Attribution: link to the EauIndex page the data came from. Questions: contact.