Everything your trading agent needs.
One API key.
Live prices, sentiment-scored intelligence, trading signals, bias detection, and portfolio analysis from a single API key. Free ticker resolution. Pay only for intelligence.
Feature by feature.
Side-by-side comparison across 21 capabilities. Green means full support, amber means partial or limited, gray means not available.
More features. Lower price.
Polaris includes sentiment, signals, bias analysis, and 7 SDKs at every tier. Competitors charge extra or don't offer them at all.
Alpha Vantage ($50) + Finnhub ($50) + CoinGecko ($129) = $229/mo for partial coverage.
Polaris gives you everything for $24/mo with sentiment, signals, and bias analysis included.
Capabilities no competitor offers.
These features are unique to Polaris. You cannot get them from Alpha Vantage, Finnhub, CoinGecko, or any combination of the three.
NLP Screener
Query the market in plain English. "Show me tech stocks with rising sentiment and negative bias shift" — no ticker lists, no manual filters.
Backtesting
Test sentiment-based trading strategies against historical data. See how signals would have performed before risking capital.
Composite Signals
Four-component weighted trading signals combining sentiment, momentum, volume, and technical indicators into a single actionable score.
Portfolio Feed
Pass your holdings, get ranked intelligence weighted by position size. Your portfolio drives the priority, not a generic news feed.
Bias Analysis
Quantified bias scores on every brief — direction, framing notes, loaded language detection, and what each source omitted.
News Impact Scoring
Every brief carries a confidence score derived from source agreement, recency, and corroboration depth. Filter noise before it reaches your models.
Switch in 5 minutes.
Drop-in replacement. Same data, plus intelligence. Our Python and TypeScript SDKs handle authentication, pagination, and rate limiting for you.
# 3 libraries, 3 API keys, 3 rate limits
import requests
# Alpha Vantage — stock price
av = requests.get(
"https://www.alphavantage.co/query",
params={
"function": "GLOBAL_QUOTE",
"symbol": "NVDA",
"apikey": AV_KEY
}
)
price = av.json()["Global Quote"]["05. price"]
# Finnhub — basic sentiment
fh = requests.get(
"https://finnhub.io/api/v1/news-sentiment",
params={"symbol": "NVDA"},
headers={"X-Finnhub-Token": FH_KEY}
)
sentiment = fh.json()["sentiment"]
# CoinGecko — crypto price (separate API)
cg = requests.get(
"https://api.coingecko.com/api/v3/simple/price",
params={
"ids": "bitcoin",
"vs_currencies": "usd",
"x_cg_demo_api_key": CG_KEY
}
)
btc = cg.json()["bitcoin"]["usd"]
# No bias analysis. No signals. No confidence.
# No portfolio feed. 3 bills to manage.from polaris_news import Polaris
polaris = Polaris(api_key="pk_...")
# Stock price + sentiment + signals in one call
nvda = polaris.trading.signals("NVDA")
print(nvda.price) # $142.50
print(nvda.sentiment) # 0.72
print(nvda.signal) # "bullish"
print(nvda.bias_score) # 0.15 (low bias)
print(nvda.confidence) # 0.89
# Crypto — same SDK, same key
btc = polaris.trading.prices("BTC")
print(btc.price) # $67,432.10
# Portfolio-aware intelligence
feed = polaris.trading.portfolio_feed(
holdings=["NVDA:40", "AAPL:30", "BTC:30"]
)
for brief in feed.briefs:
print(brief.headline, brief.impact_score)
# One API. One bill. Full intelligence.import { Polaris } from "polaris-news-api";
const polaris = new Polaris({ apiKey: "pk_..." });
// Stock signals with full intelligence
const nvda = await polaris.trading.signals("NVDA");
console.log(nvda.price, nvda.sentiment, nvda.signal);
// Search with natural language
const results = await polaris.search("NVDA earnings impact");
// Real-time stream filtered by your tickers
const stream = polaris.trading.stream(["NVDA", "AAPL", "BTC"]);
for await (const event of stream) {
console.log(event.ticker, event.sentiment, event.headline);
}7 SDKs. Every major framework.
Alpha Vantage has a Python library. Finnhub has Python + JS. Polaris ships first-class integrations for every framework your agents use.
Start with 1,000 free credits.
Get live prices, sentiment analysis, trading signals, and bias detection from day one. Scale when you need to.
1,000 credits/month free tier · 10 requests/min · No credit card · Cancel anytime