# Craggy > Craggy is independent work across agentic research, cybersecurity services and vulnerability research software. It runs two free browser apps, Craggy Modelling and Craggy Data, and publishes its open-source projects on GitHub. No account is needed to use either app. ## Apps - [Craggy Modelling](https://models.craggy.io/): a visual editor for block models of systems (nested areas, labelled relationships, typed properties and cited evidence, saved as craggy.model JSON). Agents build and edit models through its MCP server at https://models.craggy.io/mcp (streamable HTTP, no accounts, nothing stored). Agent guide: https://models.craggy.io/llms.txt - [Craggy Data](https://data.craggy.io/): a collector that reads the public web around the clock and publishes tidy, versioned datasets. The [live dashboard](https://data.craggy.io/dashboard) shows every source, run and release. Agent guide: https://data.craggy.io/llms.txt ## Open source - [Open-source projects](https://repos.craggy.io/): each public repository with its README, languages and licence. Agent guide: https://repos.craggy.io/llms.txt - [GitHub organisation](https://github.com/craggy-io) ## Contact - [Contact form](https://support.craggy.io/contact): questions, access to Craggy Data, bug reports and privacy requests. Every message reaches a person, who replies by email. - Email: hello@craggy.io - X: https://x.com/craggy_io ## Optional - [Privacy](https://craggy.io/privacy/): what Craggy collects (Google Analytics, sign-in with GitHub, Google or Apple, contact messages) and your rights under UK data protection law.