Pricing Time Machine

pricing-time-machine-mcp

See how any SaaS pricing page changed over the years. An MCP server that reads archived copies of pricing pages from the Wayback Machine and pulls out the plans and prices, so Claude (or any MCP client) can tell you when a competitor raised prices, renamed plans or dropped a free tier.

No API keys. No scraping of live sites. One line to install.

You:    How did Notion's pricing change since 2022?
Claude: [compare_pricing → notion.so/pricing, 2022-03 vs latest]
        • Personal Pro ($4/mo billed yearly) is gone; the cheapest paid plan is now
          Plus at $10 per member/month.
        • Team ($8/user/mo) became Business at $20 per member/month: 2.5×.
        • Free is still $0.

Summarized from real tool output: archived copies of 31 Mar 2022 and 7 Sep 2026.

Why

How it works

flowchart LR
    C[Claude / MCP client] -->|tool call| S[pricing-time-machine-mcp]
    S --> I[Wayback CDX index: which months were archived]
    S --> W[Archived page closest to a date]
    W --> X[Extract prices: amount, currency, /mo /yr, per user, plan guess, context]
    X -->|compact table + page text around prices| C

The server does the deterministic part (finding snapshots, extracting prices, grouping periods). The model does the interpretation: which price belongs to which plan and what a change means. Archived pages never change, so they are cached on disk (~/.cache/pricing-time-machine).

Install

Requires uv.

Claude Code

claude mcp add pricing-time-machine -- uvx pricing-time-machine-mcp

Claude Desktop / Cursor (claude_desktop_config.json / .cursor/mcp.json)

{
  "mcpServers": {
    "pricing-time-machine": {
      "command": "uvx",
      "args": ["pricing-time-machine-mcp"]
    }
  }
}

Tools

Prompts: pricing_history_report (one company, the full story with dates), competitor_pricing (a market then vs now).

Dates can be 2021, 2021-06, 2021-06-15 or latest; the closest archived copy is used and its date is always shown.

Try these

• "How did Slack's pricing change since 2016? Show every price increase in %."
• "Compare the pricing of Notion, Coda and ClickUp today and in 2021."
• "What did Figma charge for Professional in 2019?"
• "Run pricing_history_report for linear.app/pricing."

Limits (set by the source)

• Only pages the Wayback Machine archived. Most popular pricing pages have monthly copies going back years.
• Pages that draw prices with JavaScript are empty in the archive; the server says so and you can try a nearby date.
• Plan names are guesses from nearby headings; the context column and page text let the model check them.
• archive.org is slow (10–30 s per page) and sometimes briefly offline; the server retries with backoff and caches everything it reads.

Part of the keyless MCP series

Open-source MCP servers that answer one market question each, with public data and no API keys.

Development

uv sync --extra dev
uv run pytest                          # offline tests with a mocked Wayback Machine
uv run python scripts/smoke_live.py    # live check against archive.org (1-3 min)
uv run --with rich python scripts/demo.py notion.so/pricing 2022-03   # terminal demo (vhs docs/demo.tape records the GIF)
npx @modelcontextprotocol/inspector uv run pricing-time-machine-mcp   # click-through UI

MIT © Ali Altunar