Perplexity
Explore questions with answers linked to sources.
Search public founder and investor insights through cited MCP answers.

The Brains is a directory of searchable knowledge collections built from the public talks, essays, and posts of founders, investors, and other thinkers. Each collection is available as an MCP server that can be connected to tools such as Claude, Cursor, or ChatGPT. Users can ask about topics such as pricing, product ideas, or customer acquisition and receive answers that cite the underlying sources.
The directory supports searching by person or topic, filtering by background, and sorting collections by activity or source coverage. These are unofficial collections of public material, rather than personal advice from the featured individuals. The project also provides an open-source repository.
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