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MCP Price Tracker in Claude Code

Check and watch product prices on ordinary shop pages. It reads the price out of a product page from JSON-LD, microdata, Open Graph or visible markup, normalises 1.299,00 EUR and 1,299.00 USD alike, and keeps a per-watch history.

Claude Code ships WebFetch, and in a measured run it answered a price question by fetching the page itself and never called the server. Name the tracker in the sentence if you want the point stored.

What you get in Claude Code

You say	Tool
What does this cost right now: <product url>?	`price_check`
Watch that page and alert me if it goes under 40.	`watch_add`
Has anything I'm watching hit its target or dropped a lot?	`alerts_pending`

One measured limitation: with a general web fetcher available, a client sometimes answers a price question by fetching the page itself, so nothing is stored. Name the tracker in the sentence.

Install it in Claude Code

The file is .mcp.json, and the key inside it is mcpServers.

Scope	Path
local (default)	`~/.claude.json, this project only`
project	`.mcp.json at the repository root`
user	`~/.claude.json, every project`

claude mcp add price-tracker -- npx -y @theluckystrike/mcp-price-tracker
claude mcp list    # health-check it before the first prompt

# or --scope project, committed to .mcp.json for the team

No restart. The entry is picked up in the next session, and `/mcp` reconnects one on demand.

The npm publish of @theluckystrike/mcp-price-tracker is pending; until then use the .mcpb bundle or a clone and build from the latest release.

No install: the hosted endpoint

The same server runs at https://mcp.zovo.one/mcp/price-tracker over MCP streamable HTTP, no install. Mint a free token with curl https://mcp.zovo.one/mcp/token, or use a Pro key. It has no filesystem, so a file comes back as a one-hour download link.

claude mcp add --transport http price-tracker https://mcp.zovo.one/mcp/price-tracker \
  --header "Authorization: Bearer <token>"

Claude Code notes worth knowing first

The `--` is load-bearing: it separates Claude Code's own options, such as --transport, --env and --scope, from the command that runs the server. And the default scope is local, private to you and to the directory you ran it in, so adding it in the wrong folder leaves the tools absent with no error at all.

Free: unlimited checks with a confidence score, 3 watches, 30 observations each, alerts. Pro is $19 once, verified offline.

Questions

Which scope should I use for MCP Price Tracker?

Local, the default, writes ~/.claude.json and is private to you and that directory. --scope project writes .mcp.json at the repository root, shared through version control. --scope user loads it everywhere.

Why did my first prompt ignore the server?

Measured, not documented: of three fresh projects, one first prompt made zero tool calls although initialize answered in 1.05 seconds. Run claude mcp list once first: it prints Connected, and the next run used the tool.

Can I use MCP Price Tracker without installing anything?

Yes: claude mcp add --transport http price-tracker https://mcp.zovo.one/mcp/price-tracker --header "Authorization: Bearer <token>". Mint a free token at https://mcp.zovo.one/mcp/token or use a Pro key. -t and -H are the short forms.

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