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FetchDelta

by com.fetchdelta
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Server Details

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

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Status
Healthy
Uptime
100.0% over the last 24 hours
Last Tested
Transport
Streamable HTTP · MCP 2025-11-25
URL
ChatGPT
–
Claude
–

TDQS

A3.7/5.0

Scored across 7 tools

Disambiguation4/5

Most tools have clearly distinct purposes: catalog, preview, resolve, diff, page_watch_30d, poll_watch, and pricing_snapshot target different actions. However, preview_page and resolve both fetch page Markdown for readability, and diff versus page_watch_30d both involve comparing page snapshots, so some description-reading is needed to avoid misselection.

Naming Consistency3/5

The names mix single-word verbs/nouns (resolve, catalog, diff) with snake_case compounds (page_watch_30d, poll_watch, preview_page, pricing_snapshot). No consistent verb_noun pattern is followed, though all names are readable and mostly lower_snake_case.

Tool Count5/5

Seven tools is well-scoped for a paid web-fetch and monitoring API. Each tool addresses a distinct workflow: catalog pricing, free preview, paid fetch, diff comparison, daily watch creation, watch polling, and pricing extraction.

Completeness4/5

The surface covers core paid web-data workflows: pricing catalog, free preview, single fetch, snapshot diff, daily watch creation, watch reading, and pricing extraction. Minor gaps remain around watch management (listing or cancelling watches) and broader batch fetching outside the specified multi-URL tools, but these are workable limitations.

Available Tools

7 tools
catalogA
Read-onlyIdempotent
Inspect

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

Inputs: no named parameters.

diffAInspect

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.

Inputs: urls (required).

page_watch_30dAInspect

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.

Inputs: urls (required).

poll_watchB
Read-onlyIdempotent
Inspect

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.

Inputs: id (required).

preview_pageA
Read-onlyIdempotent
Inspect

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

Inputs: url (required).

pricing_snapshotAInspect

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.

Inputs: urls (required).

resolveAInspect

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.

Inputs: urls (required).

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

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