Regolith Index

A searchable index and dashboard of ~1,230 presentations from the Space Resources Roundtable (1999–2026). It holds only titles, presenters and conference metadata. Every entry links out to the original on isruinfo.com or LPI/USRA, and no presentation files are hosted here.

It is independent and not affiliated with the Space Resources Roundtable, the Colorado School of Mines, LPI/USRA or isruinfo.com.

Structure

• index.html: the whole front end (search, dashboard, browse, about). D3 is loaded from a CDN.
• data/parts/*.txt: the dataset, split into chunks. The build step scripts/assemble-data.js joins them into data/index-data.json.
• scripts/build-data.js: optional rebuild of the dataset from the public Google Sheet (SHEET_ID).
• api/search.js: server-side search. Rate-limited, and snippets are hard-capped at 300 characters in api/_lib.js.
• api/sources.js: "Find other public sources", using Claude with web search. It is off unless ANTHROPIC_API_KEY is set.
• api/contact.js: the corrections and takedown form, relayed via FormSubmit to CONTACT_EMAIL.
• api/health.js: liveness check.

Environment variables (Vercel)

Name	Required	Purpose
CONTACT_EMAIL	yes	Recipient of contact-form messages. Never exposed to the browser.
ANTHROPIC_API_KEY	no	Enables the source finder.
ANTHROPIC_MODEL	no	Defaults to claude-sonnet-5-5.
SOURCES_DAILY_CAP	no	Daily source-finder call cap, default 300.

Deploys automatically on every push to main.