| What it does | API documentation tool with automatic changelogs and breaking-change detection
| Local MCP server manager for Claude, Cursor, VS Code and other AI clients
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| Stage | Not given
| MVP
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| Founded | Not given
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| Based in | Not given
| SK
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| Pricing model | Freemium
| Open source
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| Pricing | Starter: Free (1 API, public only, up to 25 subscribers); Team: $19/month (5 APIs, unlimited subscribers)
| Free beta with no account or sign-up required. Source code available under MIT License.
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| Key features | - Automatic API Changelog Generation
- Breaking-Change Detection & Diffs
- Interactive REST API Documentation
- OpenAPI 3.1, 3.0 & Swagger 2.0 Support
- Code Examples in 10+ Languages
- Custom Domain Support
- GitHub Integration
- OpenAPI Validator
- Spec Diff Tool
- cURL to OpenAPI Converter
| - Server matrix showing which MCP servers are enabled across all supported AI clients
- Health checks and MCP Doctor to diagnose server connection failures
- Profiles to save and switch between different MCP stacks for different tasks
- Timestamped backups with atomic writes and external change detection
- Contract Guard to alert when servers change their tool definitions or descriptions
- Built-in catalog and support for custom JSON, JSONC and TOML configuration sources
- Context optimizer measuring tool-schema footprint and proximity to client limits
- Security scanning for invisible characters, credential exposure and malicious prompts in tool definitions
- Optional Gateway mode for supported stdio servers with local routing and native credential storage
- Live Activity logging with metadata-only recording and no payload capture
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| What makes it different | - Auto-written changelog with breaking-change alerts on every spec update
- 80% cheaper than Stoplight and ReadMe
- 5-minute setup with no complex configuration
- Interactive API testing built into documentation
- Automatic subscriber notifications on spec changes
| - Works with any existing MCP server you already have configured without requiring migration or special catalog registration
- Detects and alerts when servers change what they tell your model between health checks
- Completely local with no cloud sync, no account, and no upload of configuration or API keys
- Public source code under MIT License so you can audit every request or build from source yourself
- Automatic timestamped backups before every change with the ability to browse and restore earlier versions
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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 |
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| DR (Domain Rating by Ahrefs) | 25 ▼ −1 (down) since last check | 2 ● no change since last check |
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| Trust Flow (Majestic) | 10 | 2 |
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| Citation Flow (Majestic) | 26 | 17 |
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| Referring domains (Majestic) | 65 | 51 |
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ApiNotes
KyttoMCP