SiftingIO provides a single API for real-time and historical market data across stocks, forex, crypto, commodities, DEX and on-chain markets.
- for
- Developers building trading platforms, fintech apps, analytics, research tools or AI agents that need market data.
- pricing
- freemium
Key features
- Unified schema — All asset classes return the same JSON field names and types, reducing mapping effort.
- REST & WebSocket — Access snapshots, historical OHLCV via REST and live quotes/trades via WebSocket with one API key.
- Multi-source aggregation — Data from dozens of venues is de-duplicated and normalized before delivery.
- Low latency — Median sub-100 ms streaming latency for real-time feeds.
- SDKs for Go, Python, JavaScript — First-party client libraries let you start pulling data in minutes.
- Team-ready controls — Scoped API keys, role-based access, audit logs and SSO/SAML on enterprise plans.
Use cases
- Power live charts, order tickets and watchlists in a trading platform.
- Embed real-time crypto prices and FX rates in wallets or fintech apps.
- Feed screeners and backtesting engines for quantitative research.
- Drive pricing screens and conversion engines for forex brokers.
- Provide market data to AI agents that quote and reason over live markets.
SiftingIO pricing
- Free$010,000 REST calls / month · 1 WS connection, 5 symbol subs · 1 month historical depth · Community support
- Builder$79/mo/month250,000 REST calls / month · 100 req/sec rate limit · 3 WS connections, 100 symbol subs · 1 year historical depth
- Pro$239/mo/month5,000,000 REST calls / month · 150 req/sec rate limit · 10 WS connections, 1,000 symbol subs · Full historical depth
- Ultra$639/mo/monthUnlimited REST calls · 250 req/sec sustained · 50 WS connections, unlimited subs · 99.9% SLA, Slack support
SiftingIO vs alternatives
 SiftingIO |  PostalDataPI |  Fine |  Spawned |  Unified MCP Server | |
|---|---|---|---|---|---|
| Best for | Unified multi-asset market data API | Geolocation API | AI agent development | Cloud app deployment | MCP integration platform |
| Pricing | Freemium | Subscription | Free | Free | Subscription |
| DevHunt upvotes | 0 | 76 | 75 | 68 | 29 |
| Launched | Sep 2026 | Apr 2026 | Jan 2023 | Jul 2026 | Jan 2026 |
- SiftingIO vs PostalDataPI: Focuses on global location data rather than financial market data.
- SiftingIO vs Fine: Provides AI-agent building tools, not market data feeds.
- SiftingIO vs Spawned: Offers generic cloud hosting, not specialized market data aggregation.
- SiftingIO vs Unified MCP Server: MCP server for tool integrations, not a market data provider.
SiftingIO FAQ
What markets does SiftingIO cover?+
Stocks (US equities, ETFs, ADRs), forex (majors, minors, exotics), crypto, commodities (metals, energy, ag), DEX & DeFi venues, and on-chain fundamentals.
How do I authenticate?+
A single bearer token (API key) is sent on every REST request and WebSocket connection.
Is there a free tier?+
Yes – each market offers a free tier with 10 k REST calls/month, 60 req/min, 1 WS connection, 5 symbol subscriptions and 1 month of history, no credit card required.
Can I mix tiers across markets?+
Yes – you can run different markets at different tiers on the same account; bundle discounts apply automatically when two or more markets share a Pro or Ultra tier.
What SLA does SiftingIO provide?+
Paid plans include a 99.5% SLA (Builder), 99.9% SLA (Pro/Ultra) and 99.95% SLA with credits on Enterprise.
Summarized by DevHunt from sifting.io · Sep 28, 2026. Details may change; check the official site.
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