Open-source API mock server for multiple protocols
Stage
Established
Not given
Founded
Not given
Not given
Based in
FR
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
Slices - reusable page sections built by developers and assembled by marketers
Visual Page Builder - drag and drop interface for building pages
AI-powered content creation and optimization
Localization across multiple languages and markets
Live editing with real-time preview
Slice Machine - local development tool for content modeling
Automatic TypeScript generation for type-safe content models
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
Agentic platform - AI agents can create hundreds of distinct pages from one starting point while teams maintain control
Slices architecture - reusable components ensure brand consistency at scale
Developer and marketer collaboration without compromise
Works with modern frameworks and developer tools
Structured content ready for AI search and Google indexing
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
MockForge