DiffiCat
DiffiCat is a browser-based website migration testing and visual regression tool. It compares a source site (Site A) against a target site (Site B) page by page across three checks: page existence (HTTP status, broken pages and redirects), content accuracy (text and SEO changes) and pixel-level visual regression at widths from 320 to 2560px, with ZIP exports of text/CSV reports and screenshots. A free trial runs in the browser at app.difficat.com with no install or card. DiffiCat also offers an Agent API for AI agents over REST or MCP, with a free allowance needing no key and paid use via prepaid keys, Pro accounts or USDC on Base (x402).
DiffiCat publishes 7 API contracts indexed on the APIs.io network, including Balance API, Compares API, Discover API, and 4 more. Tagged areas include Company, Website Migration, Visual Regression, Testing, and QA.
The DiffiCat catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.
DiffiCat’s developer surface includes CLI, sandbox, authentication, documentation, and 37 more developer resources.
Kin Score
Standards implemented 3
Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.
APIs 7
Individual APIs this provider publishes, each with its own machine-readable definition.
DiffiCat Balance API
The Balance API from DiffiCat — 1 operation(s) for balance.
DiffiCat Compares API
The Compares API from DiffiCat — 1 operation(s) for compares.
DiffiCat Discover API
The Discover API from DiffiCat — 1 operation(s) for discover.
DiffiCat Feedback API
The Feedback API from DiffiCat — 1 operation(s) for feedback.
DiffiCat Jobs API
The Jobs API from DiffiCat — 6 operation(s) for jobs.
DiffiCat Screenshots API
The Screenshots API from DiffiCat — 1 operation(s) for screenshots.
DiffiCat Snapshots API
The Snapshots API from DiffiCat — 5 operation(s) for snapshots.
Scroll for all 7
MCP Servers 1
Model Context Protocol servers that expose these APIs to AI agents.
DiffiCat MCP Server
MCP SERVERAgent Skills 5
Packaged agent skills for driving this provider's APIs from an AI assistant.
discover-and-screenshot
AGENT SKILLmigration-comparison
AGENT SKILLprepaid-balance-and-history
AGENT SKILLdifficat
AGENT SKILLsnapshot-baseline-compare
AGENT SKILLDiffiCat API pricing
Prices published by DiffiCat.
| Plan | Price |
|---|---|
| Free trial | free trial |
| Pay as you go | pay as you go at $0.01 per captured page from a prepaid balance |
| Agent API per call | $0.02 per compared pair by a comparison job for the first 1,000 pairs of the job and $0.01 |
| Pro | Pro is $29 a month or $290 a year |
| Enterprise | larger needs are quoted on request |
Plan details, limits and sources →
Rate limits
- free-caller comparison runs: abuse limits of 500 comparison runs an hour and 2,000 pages a day apply to free callers
- free-caller pages: abuse limits of 500 comparison runs an hour and 2,000 pages a day apply to free callers
- page discoveries: 200 page discoveries an hour to every caller
Pricing Plans 1
Published pricing tiers and plan structures.
Rate Limits 1
Documented rate limits and quota policies.
Difficat Com Rate Limits
RATE LIMITSSemantic Vocabularies 1
JSON-LD contexts and semantic vocabularies used across these APIs.
Difficat Com Context
JSON-LDSpectral Rules 1
Spectral governance rulesets for linting and validating these APIs.
DiffiCat API Rules
SPECTRALOpenAPI Overlays 1
Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.
Difficat Com Agent Api Overlay
DERIVEDJSON Schema 6
Standalone JSON Schema definitions for this provider's data models.
BalanceResponse
JSON SCHEMASnapshotCompareRequest
JSON SCHEMASnapshotDetail
JSON SCHEMASnapshotPage
JSON SCHEMAStartJobRequest
JSON SCHEMAStoredCompareRequest
JSON SCHEMASecurity Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Get Started 2
Portal, sign-up, and the first successful call
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 6
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 9
Pagination, idempotency, versioning, errors, and events
Scroll for all 9
Build 7
SDKs, sample code, and the tooling you integrate with
Scroll for all 7
Access & Security 6
Authentication, authorization, and security posture
Operate 3
Status, limits, changes, and where to get help
Commercial 3
Pricing, plans, and the legal terms of use
Company 1
The organization behind the API
Other 3
Properties that don't map to a standard resource type
Source (apis.yml)
DiffiCat API — frequently asked questions
Does DiffiCat have an API?
Yes. APIs.io lists 7 APIs from DiffiCat, including DiffiCat Balance API, DiffiCat Compares API and DiffiCat Discover API, and 4 more.
Is there an OpenAPI specification for the DiffiCat API?
Yes. APIs.io indexes 7 OpenAPI specifications for DiffiCat, each linked for download from this page.
How do I authenticate with the DiffiCat API?
DiffiCat uses bearer-token authentication (apiKey/http · 6 schemes). The details are profiled on APIs.io as Difficat Com Authentication.
How much does the DiffiCat API cost?
DiffiCat publishes its prices; its Free trial plan is free trial as of 2026-11-05. APIs.io lists 5 pricing plans for DiffiCat, with each plan's price, limits and inclusions under Pricing on this page.
Does DiffiCat have an MCP server?
Yes. APIs.io lists 1 MCP server for DiffiCat.
Is the DiffiCat API ready for AI agents?
DiffiCat has a Kin Score of 60.6 out of 100 (strong) and an Agent Readiness score of 52.8 (agent-native), scored by API Evangelist on 2026-11-06.
Work with this as data
Every provider here is available over the APIs.io API and to AI agents over MCP.