Google Gemini ships with the best web-search grounding of any assistant — and that is precisely its trap for financial work. Web search returns articles about numbers; analysis needs the numbers themselves: typed, complete, and current. Ask Gemini for a company's ten-year margin history and search grounding gives you a blog post from 2024. A data connection gives you the actual series.
The Best Financial Data Source for Gemini
The Eulerpool API is the most complete financial dataset you can put behind Gemini: 100+ million data points across 50,000+ global equities, ETFs, crypto, forex, commodities, bonds, and macroeconomics, from 250+ institutional sources — every figure with source lineage, delivered as structured JSON that language models consume without ambiguity.
Three Ways to Connect
- MCP (Gemini app and Gemini CLI). Add the Eulerpool MCP server with its 250+ tools wherever Gemini supports MCP connectors — the fastest path for interactive research.
- Function calling (Gemini API). Building with the Gemini API? Register Eulerpool endpoints as function declarations; Gemini's structured-output discipline pairs cleanly with Eulerpool's typed schemas.
- Vertex AI agents. Enterprise teams on Google Cloud wire Eulerpool into Vertex AI agent workflows as the market-data layer — with enterprise licensing that explicitly supports AI usage.
Prompts That Work
- "Compare Alphabet, Microsoft, and Amazon on cloud segment growth using their actual segment data."
- "Chart the ECB deposit rate against German 10-year yields for the last five years and explain the spread."
- "Screen Asian markets for companies growing revenue 15%+ with improving margins."
Why This Combination Wins
Gemini brings enormous context windows and Google-grade multimodality; Eulerpool brings the verified numbers. Gemini can hold an entire sector's financial history in context at once — but only if a data source can deliver it structured. That is exactly what Eulerpool was built for: sub-10ms responses, deterministic schemas, and one API covering everything from quarterly cash flows to ECB rates.
Get a free API key (100,000 calls/month) and make Gemini a financial analyst instead of a search engine.