Born Then MCP Server

Born Then exposes a public, stateless, read-only MCP server so AI agents (Claude Code, Claude Desktop, Cursor, Codex) can draw random human births weighted by real historical births from 1 CE to 2025, query era demographics and sourced events, and open playable links for any drawn life. No account or API key is required.

Endpoint

POST https://bornthen.life/mcp

Quick setup

Claude Code:

claude mcp add --transport http bornthen https://bornthen.life/mcp

Cursor / MCP JSON config:

{
  "mcpServers": {
    "bornthen": {
      "type": "http",
      "url": "https://bornthen.life/mcp"
    }
  }
}

Available tools

• roll_random_birth

  Draw a random human birth weighted by how many people were actually born in each place and century/decade between 1 CE and 2025 (or within a chosen year), returning the birthplace, odds, life expectancy, historical events during that lifetime, and a playable BornThen link for those five lives.

• query_era_facts

  Look up BornThen demographic figures (population, life expectancy, child mortality, literacy, urbanisation, each labelled statistic / estimate / model) and sourced historical events (wars, famines, plagues, depressions) by year, period slug (e.g. "1920s", "14th-century"), place, or event keyword.

Numbers returned by query_era_facts carry the same four confidence labels explained on How it works: statistic, estimate, model and forecast.