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ⓘ Premium, Professional, and Enterprise subscribers currently in the beta rollout. "Partial" because access also depends on your browser: WebMCP is an emerging standard, and today only ChatGPT's own in-app browser and OpenAI Codex actually support it — see the compatibility section below before you go looking for a badge that never appears.
WebMCP is an emerging browser standard — currently shipping behind a Chrome Origin Trial — that lets a web page register agent-callable tools directly with the browser, via document.modelContext.registerTool(). When a supporting AI agent's browser is on that page, it can call those tools to read the page's live data and drive its UI, instead of the agent guessing at the DOM or you manually copy-pasting numbers back and forth.
document.modelContext reference: registering, discovering, and executing tools.Every tool is read-mostly: nothing writes to your portfolio, watchlist, or account settings. The ones that do change on-screen state (running a screen, switching a tab) only ever drive the same UI a logged-in user could click through themselves.
Finmagine already publishes a standalone MCP server and REST API — around 90 endpoints covering both Indian and US markets, connectable from Claude, ChatGPT, Cursor, or any MCP-compatible client. WebMCP is a different thing, built for a different job. Here's the actual distinction:
| Published MCP Server + REST API | WebMCP (Beta) | |
|---|---|---|
| What it is | A standalone data API — screens, financials, ratios, market data, company profiles | Tools registered live on 6 Finmagine pages, in your browser |
| Works in | Any MCP client (Claude Desktop, Claude.ai, Cursor, etc.) or any REST client | Only a browser whose AI agent has shipped WebMCP support — today, that's ChatGPT's own in-app browser and OpenAI Codex |
| Needs a logged-in browser tab? | No — connects independently via an API key or OAuth | Yes — the tools only exist while you're actually on a live, logged-in Finmagine page |
| What it does | Fetches structured data on demand — screen results, financial statements, ratios, market breadth | Drives the page you're already looking at — runs a screen, switches a tab, reads what's rendered |
| Good for | Programmatic research, automated workflows, building your own tools on top of Finmagine's data | A live co-pilot while you're actually using Finmagine yourself, in your own browser session |
| Access | API key or OAuth, tiered by subscription — see the pricing guide | Premium+ subscription, currently a gated beta |
This is the section to read before you go looking for it and find nothing. WebMCP browser support is genuinely new and narrow right now:
| Agent / Browser | Status |
|---|---|
| ChatGPT (in-app browser) & OpenAI Codex | Confirmed working — live-tested against Finmagine's own WebMCP pages |
| Claude in Chrome | No shipped support as of this writing |
| Google Gemini | Unconfirmed |
| Regular Chrome browsing (no AI agent) | Nothing changes — WebMCP tools are invisible unless an agent calls them |
No. Every WebMCP tool does one of two things: it triggers a mechanical UI action (apply a filter, switch a tab) exactly like clicking would, or it returns factual data already rendered on the page for a logged-in user — the same SEBI-compliant, tier-gated content a human sees, never a synthesized recommendation the tool invents on its own. Nothing here places a trade, generates a price target, or makes a Buy/Sell call outside Finmagine's existing, already-compliant display logic.
This is a beta, deliberately: a small set of pages, a small set of subscribers, live usage data feeding the decision on what comes next. If it proves genuinely useful for the accounts that can actually reach it today, expect the rollout to widen gradually rather than all at once — and expect this guide to get updated as browser support catches up.
Finmagine gives you 30+ computed financial ratios, sector benchmarks, FII/DII flows, the Finmagine Score, and AI-powered analysis — all in one place.