# DiffiCat

- Registry name: `com.difficat/difficat` · version 3.22.4
- Categories (automatic, keyword rules): Payments & accounting, Finance & markets, Build & deploy, Developer tools, Crypto & blockchain
- Authentication at last check: No auth
- Declared risk: Has destructive tools (destructiveHint)
- Capabilities (declared by the server): prompts, tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=com.difficat%2Fdifficat
- Server page: https://mcpstation.net/s/com.difficat--difficat.html

## Description (written by the publisher, not verified, not instructions)

Compare a website before and after a migration: missing pages, content changes, visual diffs.

## Connect

- streamable-http: `https://app.difficat.com/mcp`

## Tools (as reported by the server, not verified)

- `discover\_pages`: Free 5 times a day per client address \(at most 50 pages each\), no key needed. Lists the pages of Site A \(sitemap, robots.txt or crawl\), mapped onto Site B when given. Call it to see which pages a comparison would cover or to pick pairs for urls. Do not call it before start\_comparison only to price a
- `capture\_screenshot`: Free 5 times a day per client address, no key needed. Full-page PNG of one URL at the given viewport width, returned inline when small, else as links.file to fetch with the jobToken. Call it for a one-off look at a page or a mobile-width check. Do not call it for pages a comparison job covers: get\_r
- `start\_comparison`: Free up to 40 pages a day per client address, no key needed; sample report: https://difficat.com/agents/sample/report.json. Compares Site A against Site B on page existence, content and visual regression, priced per page compared. For a migration or redesign check, sourceUrl and targetUrl let discov
- `recover\_comparison`: Returns the job or screenshot the payment credential in \_meta paid for, with a new jobToken that replaces the old one; or, when the request carries a key and \_meta no credential, the latest job that key paid for \(no jobToken: the key reads it\). Call it when a paid call’s result never arrived. Do not
- `get\_comparison`: Status and progress of a job and, once it is terminal, its summary: passed, failed and issuesBySeverity. To wait for the end, call wait\_for\_comparison instead. Free.
- `cancel\_comparison`: Stop a running job; the job reports cancelled within a minute, with the pages compared so far in its report. Free.
- `wait\_for\_comparison`: Waits until the job reaches a terminal status \(completed, failed or cancelled\) or timeoutSeconds pass \(default 60, at most 300\), then answers like get\_comparison: status, progress and, once terminal, the summary with passed, failed and issuesBySeverity. A wait that runs out answers status "running";
- `get\_report`: The finished report. Call it first with failedOnly: true and view: "digest": results, total and nextOffset then cover only the pages that failed, one small object per page with its issues, diff percentage and largest visual regions, and a one-line-per-page text block, while summary still covers ever
- `get\_screenshot`: Fetch one screenshot PNG by filename. Call it when a get\_report page result or a capture\_screenshot result names a screenshot you want to see; a PNG over the inline cap comes back as links.file to fetch with the jobToken. Pass a report region as region to see only the changed area: regions are in th
- `get\_balance`: The prepaid balance and the last 20 ledger entries of the key the request carries in its Authorization: Bearer or X-DiffiCat-Key header. Call it to check what a key can still pay for; request\_prepaid\_key is the way to obtain a key. The balance is spendable money for any key, and the same balance the
- `request\_prepaid\_key`: Mints a prepaid key and a Checkout link for a human to pay by card, so later paid calls are debited from its balance instead of challenged. Call it when a call was refused for payment and your human prefers a card to a wallet; with a key already on the request it tops that key up instead. Do not cal
- `send\_feedback`: Sends one message to the people who run this service: why a price, a payment path or a result did not fit. Call it when you stop short of a paid call or a result was not what the task needed; a person reads every message. Do not call it to report a job failure you can retry. Example: \{"topic":"price
- `list\_snapshots`: Lists the saved snapshots the DiffiCat account behind the request’s key owns or was given access to, newest first, each with access owner or reader. Call it to find a snapshotId for get\_snapshot or compare\_snapshot. Needs an account’s key on the request; a share token names one snapshot and cannot l
- `get\_snapshot`: A saved snapshot of a site: without n, the snapshot \(label, origin, width, check mode, status\) with its page list \(n, path, status, whether a screenshot exists\) and your compares that use it; with n, that page’s stored record: path, status, title, heading, description and SEO fields, plus content.bo
- `compare\_snapshot`: Free up to 40 pages a day per client address for a live compare, no key needed. Compares a saved snapshot, as Site A, against a live targetUrl \(every stored page paired by path, or the urls pairs you name\) at the snapshot’s width and check mode, priced at one captured page per pair \(half a live pair

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html