QuakeScope — Earthquake Activity Explorer for Athena

An Athena AI Agent SDK app that lets you explore recent earthquakes by magnitude, depth, place and time range, rendered as an interactive world map inside the Athena chat.

• Data source: USGS Earthquake Hazards Program FDSN event API (live, public, no key required).

• Protocol: Model Context Protocol over Streamable HTTP.

• UI: a text/html+skybridge widget resource driven by window.openai.

MCP endpoint

https://<your-deployment>.vercel.app/mcp

Related MCP server: Comprehensive Earthquake Monitoring MCP Server

Tools

Official vs. derived — read this before using the impact tool

assess_earthquake_impact returns two deliberately separated objects.

official is USGS PAGER — real, published, citable. Estimated direct economic loss (USD), estimated fatalities, alert level, the full loss probability distribution, population exposure by shaking intensity (MMI), a per-country breakdown, and USGS's own narrative comments. Nothing here is computed by this server.

reconstruction_scenario is derived, and clearly labelled as such. USGS does not publish reconstruction cost or rebuild duration — no authoritative source does — so this is transparent parametric sizing built on top of the official loss figure, following the damage→needs convention used in World Bank / GFDRR post-disaster needs assessments: reconstruction need = direct damage × build-back-better multiplier, with duration taken from a severity-tier band driven by population exposed to damaging shaking. Every coefficient is returned in assumptions and is caller-overridable; outputs are ranges, never point forecasts.

It is planning arithmetic to scope a response. It does not replace a field-based PDNA, it excludes tsunami, landslide and liquefaction damage (PAGER is shaking-only), and it excludes indirect losses such as lost output and trade disruption. The widget renders the two layers in visually distinct sections so they cannot be confused, and the tool description instructs the model to state which figures are which.

search_earthquakes is marked openai/widgetAccessible, so the widget itself can re-invoke it — changing the time range in the UI is a real MCP round trip, not a client-side filter.

Widget interactions

1. Magnitude slider — drag to raise the M threshold; map, list and summary stats recompute live.

2. Depth-band chips — toggle shallow (<70 km) / intermediate (70–300 km) / deep (>300 km); markers are colour-coded by band.

3. Linked selection — click a marker on the map or a row in the list; the two stay in sync and a detail card shows time, depth, coordinates, felt reports, significance and a link to the USGS event page.

4. Sort — reorder the event list by recency, magnitude or depth.

5. Time-range switch (1h / 24h / 7d / 30d) — calls search_earthquakes again through window.openai.callTool and re-renders from fresh USGS data.

The impact widget adds its own: tabbed official breakdowns (shaking exposure, per-country, loss probability, USGS notes), a build-back-better multiplier slider, and a recovery-pace selector — the last two recompute the reconstruction need, annual funding requirement and phased budget live.

UI state is persisted with window.openai.setWidgetState, so filters and the selected event survive re-renders.

Layout

api/mcp.js              Vercel serverless entry (stateless Streamable HTTP)
server.js               Local dev server -> http://localhost:8787/mcp
src/quake-server.js     MCP server: resource + tool definitions, USGS client
src/widget-html.js      GENERATED widget bundle (do not edit)
public/quake-widget.html  Map widget source (HTML + CSS + JS)
public/impact-widget.html Impact assessment widget source
src/impact.js           PAGER client + derived reconstruction model
public/land-path.txt    World coastline as an equirectangular SVG path
scripts/build-widget.cjs  Inlines the map into the widget -> src/widget-html.js

Develop

npm install
npm run build:widget      # after editing public/quake-widget.html
npm start                 # http://localhost:8787/mcp
npx @modelcontextprotocol/inspector@latest --server-url http://localhost:8787/mcp --transport http

Expose it with ngrok http 8787 and point the Athena agent at https://<subdomain>.ngrok.app/mcp.

Deploy

Any Node host works. On Vercel, vercel.json rewrites /mcp to the api/mcp.js function; the transport is stateless (sessionIdGenerator: undefined, enableJsonResponse: true) as serverless requires.

Attribution

Earthquake data courtesy of the U.S. Geological Survey. Coastlines from world-atlas (Natural Earth, public domain).