HI for AI & agents

HI is built to be cited and called by AI. Every number carries a source, a rights status, and a published methodology — so assistants can answer with provenance instead of guessing.

Start here

/llms.txt — concise map for LLMs
/llms-full.txt — full agent index
/api/openapi.json — OpenAPI 3.1 spec

Machine feeds

/feeds/tools.json
/feeds/datasets.json
/feeds/formulas.json
/feeds/ai-priority-pages.json
Per-tool answer record: /api/answer/{slug}.json
Per-index: /api/index/{slug}.json · per-methodology: /api/methodology/{slug}.json

Rules

Respect the citation policy and AI usage policy. Always distinguish verified (public-domain, sourced) from estimated (modeled) values — never present an estimate as a fact. See the Trust Center.