tl;dr: Hister is a self-hosted, AGPLv3-licensed search engine that indexes the full content of pages you visit, local files, browser history, and crawled sites, keeping everything on a server you control with no telemetry. It supports ingestion via browser extensions, file watchers, and crawlers, and exposes the index through a web UI, CLI, HTTP API, and MCP server for AI assistants. It runs as a single binary with SQLite or PostgreSQL, offers a query language with field filters, wildcards, and aliases, and supports optional semantic search via an embeddings endpoint of your choice.