Your frontend finally comes alive.
Upload your OpenAPI schema and instantly get a fully functional mock API with realistic data, behavior controls, and real-time logs.
Everything you need to simulate real APIs
GhostAPI gives you the tools to build, test, and iterate without waiting for a backend.
OpenAPI -> Mock API
01Upload your OpenAPI schema and get a fully working API in seconds.
Realistic Responses
02Dynamic data, relationships, and custom rules that feel real.
Behavior Controls
03Simulate delays, errors, auth, and edge cases with ease.
Live Request Logs
04See every request in real-time with headers, query params, and payloads.
Team Workspaces
05Collaborate with your team and share mock environments.
Environment Sync
06Switch between multiple environments in one click.
From schema to simulation in 3 simple steps
Upload OpenAPI Schema
Upload your openapi.yaml or JSON file.
openapi: 3.0.0
info:
title: My API
version: 1.0.0
paths:
/users:
get:
responses:
'200':
description: OKConfigure Behavior
Control responses, errors, delays, and authentication.
"id": "{{id}}",
"email": "{{email}}",
"status": "active"
}
Start & Integrate
Get your mock API base URL and start building.
Your Mock API is live!
Why developers love GhostAPI
GhostAPI saved our team hours of waiting time. Our frontend devs can ship faster without blocking on APIs.
The behavior controls are a game changer. We can simulate any scenario instantly.
Setup took literally 30 seconds. The request logs are incredibly detailed.
Simple, transparent pricing
Start free. Scale when you're ready. No hidden fees.
Free
Perfect for getting started.
- 1 Project
- 2 Environments
- 5K Requests / Month
- Community Support
Pro
For individual developers, billed yearly.
- Unlimited Projects
- 10 Environments
- 100K Requests / Month
- Priority Support
Team
For small teams, billed yearly.
- Everything in Pro
- Team Workspaces
- 1M Requests / Month
- Team Support
Enterprise
For large organizations.
- Everything in Team
- SSO & SAML
- Custom Limits
- Dedicated Support
Ready to bring your frontend to life?
Start simulating APIs in seconds. No credit card required.
