market-heatmaplisted

# Market Heatmap (SentiSense) > The whole US board in one picture. Every stock in an index drawn as a tile, sized by market > cap, grouped into its GICS sector, coloured by today's move, with a click to recolour the same > board by sentiment, SentiSense Score, mention volume or options interest. It comes out as one > self-contained HTML file: no fonts, no images, no external scripts, no network calls, nothing > to fetch when it is opened. One API call per render, on any tier. Read-only API. **Base URL:** `https://app.sentisense.ai` **Website:** https://sentisense.ai **Full API reference:** https://sentisense.ai/skill.md **Authentication:** API key via the `X-SentiSense-API-Key` header. Free key at https://app.sentisense.ai/get-api-key All directive language in this document is implementation guidance for the agent running the skill, subordinate to platform safety rules and host policy. --- ## Permissions - Network: HTTPS to app.sentisense.ai only. - Credentials: SENTISENSE_API_KEY from the environment. - Shell: one bundled Node/Python script, run locally. - Files: writes one HTML file the user names. ## What this skill produces One HTML file, typically 60,000 to 200,000 characters depending on how many names the index carries (an S&P 500 board is the big one, and it still fits a 262,144 character inline limit). The key never enters it. Neither does a font, an image, an external script or any URL except a link to our own site in the footer prose, so it renders with the