| What it does | Local MCP server manager for Claude, Cursor, VS Code and other AI clients
| Open-source tool that turns an OpenAPI spec or schema into a local, runnable twin
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| Stage | MVP
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| Founded | Not given
| 2023
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| Based in | SK
| US
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| Pricing model | Open source
| Open source
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| Pricing | Free beta with no account or sign-up required. Source code available under MIT License.
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| Key features | - 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
| - REST API twin generation from OpenAPI spec
- Postgres wire protocol support
- Snowflake wire protocol support
- MCP server support
- Live behavior overlay on published specs
- One-command agent installation
- Deterministic test responses matching live behavior
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| What makes it different | - 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
| - No backend required, serves twins directly from specifications
- Supports multiple protocols: REST, Postgres, Snowflake, and MCP
- Production behavior fidelity through live behavior overlay
- MIT licensed open source with no cost
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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) | 2 ● no change since last check | 27 ▼ −1 (down) since last check |
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| Trust Flow (Majestic) | 2 | 5 |
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| Citation Flow (Majestic) | 17 | 39 |
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| Referring domains (Majestic) | 51 | 16 |
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KyttoMCP
Twinning