| What it does | Convert JSON to TOON format and reduce LLM token costs
| Web-based API platform for designing, testing, mocking, monitoring and documenting REST, GraphQL, gRPC, WebSocket, MQTT and MCP APIs
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| Stage | Not given
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| Based in | Not given
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| Pricing model | Free
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| Pricing | Not given
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| Key features | - Converts JSON to TOON format with token savings of 30-60%
- Local browser processing with no server data upload
- Human-readable output maintaining clarity
- Token savings statistics and reporting
- Support for deeply nested objects and repetitive keys optimization
- Automatic JSON validation
| - REST, GraphQL, gRPC, WebSocket, Socket.IO, SSE, MQTT and MCP clients
- API testing with pre-request and test scripts
- Collection runner with CSV and JSON data files
- Load testing with virtual users and profiles
- Mock servers with request matching and response templates
- API monitoring with scheduled runs and alerts
- Postman collection compatibility and migration
- GitHub sync to auto-generate collections from code
- Published API documentation with code samples
- Team collaboration with roles, comments and pull requests
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| What makes it different | - Token-optimized format designed specifically for LLMs unlike generic JSON
- Resilient fault tolerance compared to strict JSON syntax requirements
- Direct monthly cost reduction of up to 50% for high-volume LLM applications
- Complete client-side processing ensuring maximum data privacy
| - Unified client for eight protocols in one workspace
- Native Rust engine uses 434 MB desktop memory versus 585 MB for Postman
- Automatic collection generation from GitHub repository code
- Postman collection and script compatibility without modification
- Free to use with no paid plans
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
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| Community votes | 0 | 0 |
| DR (Domain Rating by Ahrefs) | 14 ● no change since last check | 2 ● no change since last check |
| Trust Flow (Majestic) | 3 | 0 |
| Citation Flow (Majestic) | 13 | 4 |
| Referring domains (Majestic) | 13 | 1 |