Open-source API mock server for multiple protocols
Stage
Established
Not given
Founded
Not given
Not given
Based in
NO
US
Pricing model
Not given
Freemium
Pricing
Not given
Free: $0/month with 10,000 requests/month and local mocks only. Pro: $29/month with 250,000 requests/month, 100,000 platform AI tokens/month, and 3 hosted mocks. Team: $99/month with 1,000,000 requests/month, 1,000,000 platform AI tokens/month, and unlimited hosted mocks. Annual plans include 2 mont
Key features
Structured content database with real-time data access
GraphQL and GROQ query language support
Media Library for managing digital assets
Portable Text for rich text editing
Multi-protocol support (REST, gRPC, GraphQL, WebSocket, Kafka, MQTT and more)
Realistic data synthesis with template tokens and faker fields
Latency and fault injection for testing retries and fallbacks
Record and replay for capturing and replaying live traffic
Modern admin UI for managing servers, overrides and metrics
Configuration as code with OpenAPI specs and YAML
Local-first development without account requirement
CI integration with local endpoints
HTTP bridge exposing gRPC services over REST
BYOK AI integration with user provider keys
What makes it different
First content agent that knows your content structure for accurate automation at scale
Schema-as-code approach allowing schemas to live in Studio configuration rather than database constraints
One API powering web, mobile, and agentic applications
Infinitely customizable workflows that mirror how content teams work
Programmable automation triggered by any content mutation to eliminate manual busywork
Multi-protocol mocking from one configuration file
Realism-first simulation with data synthesis and failure injection
Open source with permissive MIT or Apache-2.0 licensing
Local-first approach with optional cloud collaboration