Open-source API mock server for multiple protocols
Stage
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Founded
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Based in
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US
Pricing model
Freemium
Freemium
Pricing
Free download from Mac App Store with free trial. Pro access available as one-time lifetime purchase.
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
Monitor usage, balances, and credits from 14 AI providers
Menu bar app displaying provider information
Provider dashboard
Usage history tracking
Widgets and alerts
Credentials stored in Mac Keychain
Direct HTTPS connection to provider APIs
Local data storage on Mac
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
No data sent to external servers - credentials secured in Mac Keychain
Supports 14 different AI providers in one interface
See limits and history from the macOS menu bar
Simple setup in 3 seconds
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
Code Meter
MockForge