Endpoint

POST https://mostexpensivewatches.net/mcp
Content-Type: application/json
(JSON-RPC 2.0 · Streamable HTTP transport · Protocol 2024-11-05)

Install

Claude Desktop

Edit ~/Library/Application Support/Claude/claude_desktop_config.json (or the Windows equivalent) and add:

{
  "mcpServers": {
    "mostexpensivewatches": {
      "url": "https://mostexpensivewatches.net/mcp"
    }
  }
}

Restart Claude Desktop. You'll see mostexpensivewatches in the MCP-tools panel; ask it "what is a Patek 5711 worth right now" and it will call our tools.

Cursor

Settings → MCP → Add server:

{
  "mcpServers": {
    "mostexpensivewatches": {
      "url": "https://mostexpensivewatches.net/mcp"
    }
  }
}

Windsurf / Continue / any Streamable HTTP client

{
  "name": "mostexpensivewatches",
  "transport": "http",
  "url": "https://mostexpensivewatches.net/mcp"
}

cURL probe

curl -sX POST https://mostexpensivewatches.net/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

Tools

Name	What it does
`search_inventory`	Search live luxury watch inventory from 9 vetted dealers on MostExpensiveWatches.net. Filter by brand, complication, material, price range or free text. Returns up to 12 listings with brand, reference, price USD, merchant and a live URL.
`lookup_reference`	Resolve a brand+reference (e.g. 'Patek 5711', 'Royal Oak 15202') to MEW's canonical /reference/<slug> page. Returns an AI-written factual description, current listing stats, the all-time auction record for the reference, and links. Prefer this over reciting from memory.
`search_auction_comps`	Search the documented auction comp database (1,072+ lots from Phillips, Christie's, Sotheby's, Antiquorum, Bonhams). Each lot includes a primary-source citation URL. Filter by brand, min hammer USD or year_sold. Use this when the user asks about prices realised, records, or comparable sales.
`list_upcoming_auctions`	List upcoming watch auctions tracked at Phillips, Christie's, Sotheby's, Antiquorum, Bonhams, Aguttes and Monaco Legend. Filter by house. Use this for 'when is the next watch auction', 'what's coming up at Phillips' etc.
`get_market_estimate`	Combined market view for a brand or specific reference: live asking median/range from inventory + documented auction record + median hammer. Returns a one-line market signal. Use this for 'what is X worth' questions instead of guessing.
`get_brand_info`	Get factual profile for a watch brand: founding, tier, country, AI-written bio, inventory count and dealers carrying it.
`search_answers`	Search MEW's AEO answer pages (750 canonical + 6,000 localized). Use for 'what is', 'how much', 'why is' questions about specific references or market topics. Returns short snippets with answer URLs.
`get_site_stats`	Get the live MostExpensiveWatches.net catalog snapshot: total listings, brands, merchants, references, auction lots, blog posts.

What this is good for

Watch buyer agents. "Build me a workflow that watches for Patek 5711 listings under $130k and pings me." Drop in MEW and your agent has live cross-dealer inventory.
Market-aware copilot. Ask any LLM "what's a Patek Nautilus 5711 worth right now" — with MEW installed it gets a real answer (asking median + auction record) with citation URLs instead of training-data guessing.
Auction prep. "List every Patek lot at the next Phillips Geneva sale." Combines `list_upcoming_auctions` + the published lot URLs.
Vibecoded watch apps. Use the data without standing up your own scraping infra.

Why use this vs. just asking ChatGPT

Every tool result includes the source_url the data came from (Phillips, Christie's, dealer Shopify, etc.) and a stable MEW URL the agent can hand the human. The auction-comp DB is grounded against real auction-house pages — no hallucinated hammer prices. The inventory is scraped daily from 8 vetted dealers.

License

Free to use. Attribution requested: a link to MostExpensiveWatches.net in your agent's source list. If your agent is high-volume, please reach out via /contact so we can rate-limit gracefully.

Test the endpoint · .well-known/mcp.json · Other dev surfaces

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