Answer, then show the caveats
Turn a ticker question into a structured brief with facts, interpretations, risk, and missing information clearly separated.
Quote data + financial reasoning
When a quote is only the first step.
StockUp Quan is an alternative for developers who came looking for a Yahoo Finance API but actually need an AI agent to explain the data, compare companies, inspect risk, or answer a financial question.
- 100,000 free Quan 3.4 L tokens
- No card required
- Honest about unavailable data
from-quote-to-answer.sh
curl https://stockup.cc/v1/query \
-H "x-api-key: $STOCKUP_API_KEY" \
-H "content-type: application/json" \
-d '{
"model": "quan-3.4",
"messages": [{
"role": "user",
"content": "Give me verified NVDA quote context,\nthen explain valuation and the key risks."
}],
"stream": false
}'Quan is not affiliated with Yahoo and is not a clone of its endpoints.
Natural languageAsk the actual finance question
Grounded contextVerified quote when supported
Finance workflowsFilings, risk, DCA, moves
Agent interfacesREST, OpenAPI, MCP
Choose by job-to-be-done
Raw data and reasoning solve different problems.
| Your requirement | StockUp Quan | Traditional finance API |
|---|---|---|
| Current quote endpoint | Context inside supported AI requests | Purpose-built |
| Historical bars in bulk | Not the product focus | Purpose-built |
| Explain valuation and catalysts | Purpose-built | Requires your own reasoning layer |
| Review portfolio risk | Purpose-built | Requires your own analytics |
| Give an AI agent finance tools | 8 MCP tools + OpenAPI | Varies |
| Exchange entitlements / trading | Not supported | Choose a licensed provider |
Where Quan fits
Replace glue code, not every data source.
Eight finance tools over MCP
Give Claude, Cursor, and compatible clients tools for quotes, comparisons, filings, sentiment, DCA, portfolios, and moves.
One endpoint, multiple depths
Route fast work to Quan Lite, flagship questions to 3.4, and longer investigations to Deep Research.
Comparison FAQ
Important distinctions.
Does Quan return raw quote JSON?
The public API returns an AI response and related usage metadata, not a drop-in replica of a raw quote endpoint. Use the response for explanation-oriented features.
Should I use Quan for automated trading?
No. Quan is research and education software, not an execution venue, personalized investment adviser, or substitute for licensed market data and professional review.
Can I combine Quan with my existing data vendor?
Yes. Many products will keep their existing chart or market-data source and use Quan as the reasoning layer for narrative research, comparisons, and agent workflows.
Try the reasoning layer
Ask one question your quote API cannot answer.
Start with 100,000 free Quan 3.4 L tokens. Add prepaid balance only when you need more tokens or a fuller research plan.
Create a free Quan key →