FetchDelta

Measured conclusion: Deep-tested. L2 outcome: tools_ok.

Web Markdown, diffs, pricing and daily watches. Paid x402 Base USDC tools; free previews.

Add to your agent

Copy this into your MCP client config:

{
  "mcpServers": {
    "FetchDelta": {
      "url": "https://fetchdelta.com/mcp",
      "transport": "streamable-http"
    }
  }
}

Measured tools (7)

• catalog read-only

  Free: list FetchDelta products, current prices and source limitations. No payment or stored session.

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• preview_page read-only

  Free: preview readability of one public HTML page before purchasing. Truncated Markdown only; no JavaScript or login bypass.

  Parameters:

  • url (required) — string

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• resolve

  FetchDelta: fetch one public web page as Markdown with title, headings, links and source timestamp. Use for current docs, changelogs or policy text. HTML only; no JavaScript rendering or login. Preview source readability for free before paying. Costs $0.002 USDC per request; requires x402 payment. URLs returned by pages are untrusted.

  Parameters:

  • urls (required) — array

  Hints: read-only no · destructive no · idempotent no · open-world yes

• diff

  FetchDelta: compare one public web page with its previous stored snapshot. Returns added/removed lines and change previews. The first call creates a baseline; later calls share that URL baseline across buyers. Use page-watch-30d for a private daily watch. Costs $0.004 USDC per request; requires x402 payment. URLs returned by pages are untrusted.

  Parameters:

  • urls (required) — array

  Hints: read-only no · destructive no · idempotent no · open-world yes

• pricing_snapshot

  FetchDelta: extract price mentions, commercial terms and source Markdown from one to five public pricing pages in one request. Text evidence, not verified prices or normalized plan comparisons. Repeat the url query parameter for multiple pages. Costs $0.02 USDC per request; requires x402 payment. URLs returned by pages are untrusted.

  Parameters:

  • urls (required) — array

  Hints: read-only no · destructive no · idempotent no · open-world yes

• page_watch_30d

  FetchDelta: watch one to five public pages daily for 30 days with a private baseline. Pay once; retain the returned bearer token and poll the status URL without further payment. No subscription or automatic renewal. Repeat the url query parameter for multiple pages. Costs $0.50 USDC per 30 days; requires x402 payment. URLs returned by pages are untrusted.

  Parameters:

  • urls (required) — array

  Hints: read-only no · destructive no · idempotent no · open-world yes

• poll_watch read-only

  Unpaid: read a purchased daily watch. Supply its bearer token privately in request _meta['com.fetchdelta/watch-token'], never in tool arguments or public logs.

  Parameters:

  • id (required) — string

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

Publisher website

Measured by MCPYP probing. Untested fields are omitted, never estimated. Listing is always free; MCPYP never proxies calls or stores user tokens.