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Nothing to run from here
DiffiCat is installed from its publisher's own source and answers where it runs, so this marketplace is not in the path of a single call. There is no address here to send one to, and a panel that pretended otherwise would be showing you an answer we made up. Install it and call it from your own client — the Installation tab has the entry for each one.
15
tools declared
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trust score
remote
at its publisher
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calls last 7d
What it does
Compare a website before and after a migration: missing pages, content changes, visual diffs.
Quickstart
# 1 — add it to Claude Code
claude mcp add --scope user --transport http difficat-mcp https://app.difficat.com/mcp
# 2 — ask your agent for something these tools do
# discover_pages, capture_screenshot, start_comparison and 12 more
DiffiCat costs nothing on mcprush: there is no plan to choose here, no cap to set and nothing mcprush can bill you for.
Publishernot claimed
DIAll 1 server
difficat1 server
1 category
Collected from a public index. Nobody has claimed this account, so nothing here was written by its author — claim it if it is yours.
Installation
Where are you running it?
Every route below installs the same thing and ends at the same approval screen. Nothing here runs on your machine and nothing runs on ours: this server answers at its publisher’s own address, and what you install is the connection straight to it.
Claude Codedeclared by this listing
This is a public server: it answers at its publisher’s own address and this marketplace is not in the path. Claude Code registers it in one command; --scope user makes it available in every project. The transport below is http, as the publisher's own manifest declares it.
claude mcp add --scope user --transport http difficat-mcp https://app.difficat.com/mcpReconnect, or start a new session, and the tools appear in the model’s tool list.
Free on mcprush, and it answers at its publisher’s own address: this marketplace is not in the path, so there is no key of ours to hold and no card to add.
What it writes
One config entry pointing straight at the publisher’s own address — this marketplace is not in the path, and nothing from this listing executes on your machine.
What you approve
15 tools, with what each one reads, writes and reaches shown before you agree — the same list on every route above. Read the tool surface.
Tool surface
What the model actually sees. Descriptions are diffed on every release — see version history.
Free 3 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 job: a job without urls discovers for itself. Lists at most maxPages pages, 500 without it (up to 5
| Parameter | Type | Required | Notes |
|---|---|---|---|
| sourceUrl | string | yes | Site A (full URL). |
| targetUrl | string | no | Site B; pages are mapped onto it when given. |
| sitemapUrl | string | no | Sitemap to read instead of the fallbacks. |
| maxPages | integer | no | Stop after this many pages (default and at most 5000). |
Free 3 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_report names their screenshots for get_screenshot. Example: { "url": "https://new.example/pricing", "
| Parameter | Type | Required | Notes |
|---|---|---|---|
| url | string | yes | Page to capture (full URL). |
| auth | object | no | HTTP basic auth for the page. |
| viewportWidth | integer | no | Capture width in px. |
| idempotencyKey | string | no | Optional opaque string a retry repeats: under a prepaid balance the same value within 24 hours is not charged again and answers DUPLICATE_REQUEST with the jobId of the first call. |
Free up to 10 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 on the pages it compares. Call it for a migration or redesign check: sourceUrl and targetUrl let discovery pick the pages (maxPages caps them), or urls names the pairs; then wait_for_compa
| Parameter | Type | Required | Notes |
|---|---|---|---|
| sourceUrl | string | no | Site A, the reference site (full URL). Required unless urls is given. |
| targetUrl | string | no | Site B, the migrated site. Omit to capture screenshots of Site A only. |
| sourceAuth | object | no | HTTP basic auth for Site A. |
| targetAuth | object | no | HTTP basic auth for Site B. |
| urls | array | no | Explicit page pairs to compare (at most 50000); skips discovery and is priced per pair. One pair is a single-page comparison and needs no sourceUrl. |
| maxPages | integer | no | Optional ceiling on the pages compared and charged for. The job is priced on the pages it compares: the urls list, or the pages discovery finds, at most this many. There is no page limit. |
| threshold | number | no | Visual diff tolerance as a fraction from 0 (exact) to 1: 0.05 means 5%. The web app takes a percentage; the API does not. |
| sitemapUrl | string | no | Sitemap to discover pages from. |
| viewportWidth | integer | no | Capture width in px. |
| checkMode | string | no | What each page is checked on: full (existence, content and visual, the default), text-only (existence and content, no screenshots) or existence-only (only that every page exists and answers, as for a |
| maxPriceUsd | number | no | Optional spend cap in USD. A job priced above it is refused before any challenge, so an auto-paying client is never asked for more. |
| callbackUrl | string | no | Optional https URL (port 443) that receives one JSON POST when the job ends (jobId, status, summary, links; never the jobToken), a nudge to read the job. Public hosts only, no redirects followed, retr |
| dryRun | boolean | no | Quote only: runs every check and the pricing, then answers the page count and exact amount. Nothing is charged, the free allowance is not used and no job starts; the same body without dryRun is priced |
| idempotencyKey | string | no | Optional opaque string a retry repeats: under a prepaid balance the same value within 24 hours is not charged again and answers DUPLICATE_REQUEST with the jobId of the first call. |
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 call it for a free run, which records no credential. Free.
No parameter schema on file.
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.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| jobId | string | yes | The jobId returned when the job was created, e.g. web-1a2b3c. |
| jobToken | string | no | The jobToken returned when the job was created. Optional when the request’s HTTP headers carry the key that paid the job. |
Stop a running job; the job reports cancelled within a minute, with the pages compared so far in its report. Free.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| jobId | string | yes | The jobId returned when the job was created, e.g. web-1a2b3c. |
| jobToken | string | no | The jobToken returned when the job was created. Optional when the request’s HTTP headers carry the key that paid the job. |
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"; call it again. Free.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| jobId | string | yes | The jobId returned when the job was created, e.g. web-1a2b3c. |
| jobToken | string | no | The jobToken returned when the job was created. Optional when the request’s HTTP headers carry the key that paid the job. |
| timeoutSeconds | integer | no | Seconds to wait for a terminal status before answering with the current one (default 60, at most 300). |
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 every page. Read a page's regions before fetching its screenshots: pass one as region to get_screenshot
| Parameter | Type | Required | Notes |
|---|---|---|---|
| jobId | string | yes | The jobId returned when the job was created, e.g. web-1a2b3c. |
| jobToken | string | no | The jobToken returned when the job was created. Optional when the request’s HTTP headers carry the key that paid the job. |
| offset | integer | no | Index of the first page result to return (default 0). |
| limit | integer | no | Page results to return (at most 5000; default 1000 on REST, 50 over MCP). |
| failedOnly | boolean | no | Only pages whose status is fail: results, total, nextOffset and text then cover the failed pages alone, while summary still covers every page. |
| view | string | no | full (default) returns every page result with its diffs and screenshots plus text; digest returns one small object per page (status, failed checks, issues, diff percentage) and no text. Combine digest |
| responseFormat | string | no | concise (default): each result is { path, status, failedChecks }; detailed: the full per-check fields, diffs and screenshot names of every result. |
| includeText | boolean | no | Also return the plain-text report over the slice as structuredContent.text; the text block carries it either way. |
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 the diff image's coordinates, which share their top-left origin with the source and target screenshots
| Parameter | Type | Required | Notes |
|---|---|---|---|
| jobId | string | yes | The jobId returned when the job was created, e.g. web-1a2b3c. |
| jobToken | string | no | The jobToken returned when the job was created. Optional when the request’s HTTP headers carry the key that paid the job. |
| filename | string | yes | A screenshot filename from the report. |
| region | object | no | A region from the report, { x, y, width, height } in screenshot px: only that rectangle is returned, clamped to the image. |
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 account spends in the web app; a Pro account’s key also returns allowance (included captured pages
No parameter schema on file.
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 call it to learn a price (use start_comparison with dryRun) or while the free allowance still covers th
| Parameter | Type | Required | Notes |
|---|---|---|---|
| amountUsd | integer | yes | Whole US dollars to put on the key: one of the offered amounts (5, 10 or 25 by default). |
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","message":"Too expensive for 150 pages","relatedTool":"start_comparison","quotedAmount":"3.00","pa
| Parameter | Type | Required | Notes |
|---|---|---|---|
| topic | string | yes | What the message is about. |
| message | string | yes | What did not fit, in your own words (1 to 2000 characters). |
| relatedTool | string | no | The tool of this server the message is about. |
| quotedAmount | string | no | The USD amount a challenge or quote asked for, as a two-decimal string like "3.00". |
| wouldPayAt | string | no | The USD amount you would have paid for it, as a two-decimal string. |
| pages | integer | no | The page count the job had. |
| contact | string | no | Where a person may reply (up to 200 characters). |
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 list. Free.
No parameter schema on file.
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.bodyText with includeText: true and the screenshot inline with includeImage: true when it fits, else a
| Parameter | Type | Required | Notes |
|---|---|---|---|
| snapshotId | string | yes | The snapshot id, snap-<uuid>, from list_snapshots or the web app. |
| shareToken | string | no | A share token (dcs_…) the snapshot’s owner issued for agents. Needed unless the account key on the request’s HTTP headers owns or was granted the snapshot. |
| n | integer | no | A page number from the snapshot’s page list: returns that page’s stored record instead of the snapshot. |
| includeText | boolean | no | With n: also return the page’s stored body text as content.bodyText. |
| includeImage | boolean | no | With n: return the page’s screenshot inline when it fits a host, else only links.file. |
Free up to 10 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) with no discovery; the snapshot’s own origin is never fetched. With otherSnapshotId instead of tar
| Parameter | Type | Required | Notes |
|---|---|---|---|
| snapshotId | string | yes | The snapshot id, snap-<uuid>, from list_snapshots or the web app. |
| shareToken | string | no | A share token (dcs_…) the snapshot’s owner issued for agents. Needed unless the account key on the request’s HTTP headers owns or was granted the snapshot. |
| targetUrl | string | no | The live site to compare against the snapshot (full URL). Give this or otherSnapshotId. |
| otherSnapshotId | string | no | A second snapshot, captured at the same width and check mode, to compare the first against. Needs the account key on the request; never free. Give this or targetUrl. |
| urls | array | no | With targetUrl: the pairs to compare, each source a page of the snapshot (its path or full URL on the snapshot’s origin) and each target on targetUrl. Without it every stored page is paired by path. |
| threshold | number | no | Visual diff tolerance as a fraction from 0 (exact) to 1: 0.05 means 5%. The web app takes a percentage; the API does not. |
| maxPriceUsd | number | no | Optional spend cap in USD. A job priced above it is refused before any challenge, so an auto-paying client is never asked for more. |
| dryRun | boolean | no | Quote only: runs every check and the pricing, then answers the page count and exact amount. Nothing is charged, the free allowance is not used and no job starts; the same body without dryRun is priced |
| callbackUrl | string | no | Optional https URL (port 443) that receives one JSON POST when the job ends (jobId, status, summary, links; never the jobToken), a nudge to read the job. Public hosts only, no redirects followed, retr |
| idempotencyKey | string | no | Optional opaque string a retry repeats: under a prepaid balance the same value within 24 hours is not charged again and answers DUPLICATE_REQUEST with the jobId of the first call. |
Free
$0 forever
- Every tool — any call limit is its publisher’s, not ours
- No card, and mcprush charges nothing for it
- Runs at its publisher’s own address — this marketplace is not in the path
- Nothing to cap, because mcprush bills nothing
What counts against your monthly calls
| Tool | Unit | Calls used | Out of the allowance |
|---|
Nothing here is billable: mcprush charges nothing to install DiffiCat or to call it, at any volume.
Call allowance · this installenforced at the gateway
Monthly allowance, in calls
—
—
Alert at 80% · then the tool returns a normal MCP error
Used this month: —
—Grade not published
No rule-by-rule report on file for this release
Two independent axes, because powerful and malicious are different questions. The grade is threat only. The capability level is blast radius, and it is never a penalty on the grade — it is priced as one subtract-only term in the score, where you can see it.
This listing is an address its publisher runs, and you connect to it directly — this marketplace is not in the path. The scanner reads packages and public source, and an address is neither. So there is no grade — not a withheld one, an unmeasured one.
Release history
This is an address its publisher runs: which release it serves is theirs to choose, so there is nothing here to pin. The history below is for reading; the current release on file is 3.22.4.
3.22.4
undated
latestNo release note was published with this version.
—
no reviews yet
Who can review
One review per account, from a signed-in account that does not publish this listing. Nothing else is asked — you can say what you think before you install it. Publishers can reply once per review, and a review can be edited or deleted by whoever wrote it.
Sign in to write one
Any signed-in account that does not publish DiffiCat can review it, once — before installing it or after. A review from an account that has installed it is marked as one.
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Nobody has reviewed this listing. The rating on the card is the mean of the reviews written here and nothing else, so there is no rating until somebody writes the first — which takes a signed-in account that does not publish it, and nothing else.