# Graf.ink > Graf.ink is a visual, source-driven knowledge layer. A timeline is a mindmap laid on time. Every public moment has an https source. - [Explore](https://graf.ink/explore) - [JSON API](https://graf.ink/api/v1/timelines) - [OpenAPI](https://graf.ink/openapi.json) - [MCP](https://graf.ink/mcp) - [How to cite](https://graf.ink/bot) Licence: PLACEHOLDER: licence unset (decision D5). This is not a licence grant. ## Timelines - [Marie Curie](https://graf.ink/g/marie-curie.md)