ApiMock Studio

OpenAPI 3.0 Mock Server with Synthetic Latency & Jitter Simulator

Lightweight API prototyping and chaos simulation server. Ingests OpenAPI 3.0 and Swagger specs, generating realistic synthetic mock responses with configurable HTTP error rates, network latency spikes, and realistic fake data generators.

Purchase License ($29.99) Open Live Web Portal

Real Desktop Application UI • 1280x800 Native GTK3 Workspace

100% Native Executable Node-Lock Verified

ApiMock Studio — Live Native Desktop Workspace (Primary Window & Real GTK UI)

Head-to-Head Competitor Analysis

Why ApiMock Studio is cheaper, faster, and more secure than Postman Enterprise ($588/yr) / Mockoon Pro ($60/yr).

Comparison Metric	ApiMock Studio	Postman Enterprise ($588/yr) / Mockoon Pro ($60/yr)
License Model & Price	$29.99 (One-Time Perpetual)	$60 to $588/year subscription
Annual Financial Savings	Save $558/yr every single year
Competitor Drawbacks	Expensive cloud subscription lock-in, sluggish Electron memory hog, complex authentication gates
Why Vivian Is Better	One-time $29.99 perpetual license, standalone C++ server, sub-millisecond response speeds, zero cloud subscription
Execution Environment	100% Offline Air-Gapped	Mandatory cloud check-in
Runtime Telemetry	Zero Telemetry (0.00KB sent)	Cloud telemetry & user tracking

Engineering Specifications & Features

Instant mock server generation from OpenAPI 3.0 and Swagger JSON/YAML specifications

Synthetic network chaos simulator: inject random latency (50-2000ms), jitter, and packet loss

HTTP error rate simulation: trigger intermittent 429 Rate Limited, 502 Bad Gateway, and 504 Timeouts

Dynamic response templating using Faker variables (names, emails, UUIDs, timestamps)

Stateful in-memory CRUD storage simulating realistic database persistence across sessions

Headless CLI daemon mode for local integration testing in Docker and CI/CD pipelines

Graphical Interface (GUI) Architecture

Route navigation list with method badges (GET/POST/PUT/DELETE), request/response schema preview, latency slider, and live request log waterfall.

Headless CLI Reference & Execution

ApiMock Studio includes a headless command-line binary ready for automation pipelines, cron daemons, and CI/CD runners:

# Headless command execution:
apimock --mock-sample --spec openapi.json --port 8080 --latency 150ms --error-rate 5%
# Cryptographic node-lock activation:
apimock --activate YOUR-CROCKFORD-KEY

Core Architecture & Asymmetric Security

High-concurrency C++ asynchronous HTTP engine capable of answering 85,000 mock requests per second with negligible RAM usage.