SiftingIO
Cross-asset market data APIs covering US equities, forex, cryptocurrency, DeFi/on-chain, commodities, and SEC/EDGAR fundamentals, aggregated across venues and normalized into one JSON schema so every asset class shares the same fields, auth model and integration flow. Delivered over REST (37 operations under a public OpenAPI 3.1 contract), a WebSocket stream described by a public AsyncAPI 3.0 contract, and a documented FIX 4.4 market-data feed. Fundamentals cover filings, filing-text extraction and risk-factor diffs, XBRL financials, ratios, insiders, ownership and 13F holdings; reference data covers market status, hours and holiday calendars; derived data covers technical signals and on-chain TVL. Official Go, Python and JavaScript SDKs, an open-source (locally-run) MCP server with 36 tools, and a provider-published agent ruleset. Operated by SaltingIO LLC, a Wyoming company; explicitly not a broker, exchange or trading venue.
SiftingIO publishes 13 API contracts indexed on the APIs.io network, including Live Stream, Commodities API, Convert API, and 10 more. Tagged areas include Financial market data, Stocks/equities, Foreign Exchange, Cryptocurrency, and DeFi/on-chain.
The SiftingIO catalog on APIs.io includes 1 event-driven AsyncAPI specification.
SiftingIO’s developer surface includes authentication, changelog, sandbox, documentation, API reference, getting-started guide, support, and 46 more developer resources.
Kin Score
Markets this provider is in provisional
The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.
| Market | Position | Depth | Registered MCP server | Declares compatibility |
|---|---|---|---|---|
| RegTech, AML/KYC and Money Transmission | undeclared | - | 1 | - |
Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.
Standards implemented 2
Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.
APIs 13
Individual APIs this provider publishes, each with its own machine-readable definition.
SiftingIO Live Stream
WebSocket streaming API for live market data, described by an AsyncAPI 3.0 contract. Also offers a documented FIX API.
SiftingIO MCP Server
LOCALLY-RUN MCP server, not a hosted endpoint. The client launches it (`npx -y siftingio-mcp`, or the Python package) and it runs on the user's own machine, reading the key from...
SiftingIO Commodities API
Historical OHLC bars for commodities (metals, energy, industrials).
SiftingIO Convert API
Live currency and token conversion across forex and crypto.
SiftingIO Crypto API
Historical OHLCV bars for crypto symbols.
SiftingIO DEX API
On-chain wallet portfolios and historical DEX bars.
SiftingIO Filers API
13F institutional holdings.
SiftingIO Forex API
Historical OHLC bars for FX pairs.
SiftingIO Live API
Live market data read from the engine's latest snapshot.
SiftingIO Markets API
Market catalog, status, hours, and holiday calendars.
SiftingIO Signals API
Technical-analysis signals (live and historical) across stocks, forex, crypto, and commodities.
SiftingIO Stocks API
US-equity fundamentals (SEC) and historical bars.
SiftingIO Economic Calendar API
US macro economic events.
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MCP Servers 2
Model Context Protocol servers that expose these APIs to AI agents.
SiftingIO MCP Server
MCP SERVERSiftingIO MCP Server
SiftingIO market data: live crypto/forex/metals prices, OHLCV bars, SEC fundamentals, 13F data. Returns the same normalized shapes as the REST API, with structuredContent alongs...
MCP SERVERPricing Plans 1
Published pricing tiers and plan structures.
Rate Limits 1
Documented rate limits and quota policies.
Siftingio Rate Limits
RATE LIMITSEvent Specifications 1
AsyncAPI definitions for this provider's event-driven and streaming APIs.
SiftingIO Live Stream
WebSocket API for live market data. Connect to `wss://stream.sifting.io/ws/v1?key=sft_...` — the API key is passed as the `key` query parameter (the only WebSocket auth method)....
ASYNCAPIOpenAPI Overlays 11
Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.
Siftingio Commodities Overlay
UNRECORDEDSiftingio Convert Overlay
UNRECORDEDSiftingio Crypto Overlay
UNRECORDEDSiftingio Dex Overlay
UNRECORDEDSiftingio Economiccalendar Overlay
UNRECORDEDSiftingio Filers Overlay
UNRECORDEDSiftingio Forex Overlay
UNRECORDEDSiftingio Live Overlay
UNRECORDEDSiftingio Markets Overlay
UNRECORDEDSiftingio Signals Overlay
UNRECORDEDSiftingio Stocks Overlay
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Security Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Get Started 5
Portal, sign-up, and the first successful call
Documentation 4
Reference material describing how the API behaves
Agent Surfaces 4
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 6
Pagination, idempotency, versioning, errors, and events
Build 6
SDKs, sample code, and the tooling you integrate with
Access & Security 2
Authentication, authorization, and security posture
Operate 7
Status, limits, changes, and where to get help
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Commercial 5
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 11
Properties that don't map to a standard resource type
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Source (apis.yml)
Work with this as data
Every provider here is available over the APIs.io API and to AI agents over MCP.