DUCKQUANT / THE QUANT & AI DIRECTORY

Market Data & APIs

502 resources, ranked by in-directory PageRank

Screenshot review pendingResource information and source links remain available.
Website

Yahoo Finance

finance.yahoo.com

wss://streamer.finance.yahoo.com/ - This is not advertised in developer documentation, but discoverable as the websocket is used to update their website

Page language
en-US
Directory citations
1
Discovery sources
1
market-datafreetrading
74 Authority 74 / 100 Cited by 1 resources in this directory 1 discovery sources Directory record updated: 2026-10-11 How scoring works →
Screenshot review pendingResource information and source links remain available.
Research paper

Tensor Representation in High-Frequency Financial Data for Price Chang

arxiv.org

Publication: Tensor Representation in High-Frequency Financial Data for Price Change Prediction. Published Sep 5, 2017.

Published
Sep 5, 2017
Authors
5
73 Authority 73 / 100 Cited by 1 resources in this directory 1 discovery sources Directory record updated: 2026-10-11 How scoring works →
Screenshot review pendingResource information and source links remain available.
Website

AxionQuant

axionquant.com

Unified financial data API covering market prices, fundamentals, disclosures, macroeconomic, and alternative data for long-horizon research and quantitative…

Page language
en
Directory citations
2
Discovery sources
2
quantcommercial-proprietarytrading
73 Authority 73 / 100 Cited by 2 resources in this directory 2 discovery sources Directory record updated: 2026-10-11 How scoring works →
Screenshot review pendingResource information and source links remain available.
Website

CoinPaprika

coinpaprika.com

Cryptocurrency market data API with 20,000 free calls per month for personal use, including one year of daily price history, without an API key.…

Page language
en
Directory citations
2
Discovery sources
2
quantcommercial-proprietarytrading
73 Authority 73 / 100 Cited by 2 resources in this directory 2 discovery sources Directory record updated: 2026-10-11 How scoring works →
Screenshot review pendingResource information and source links remain available.
Website

Brapi

brapi.dev

Brazilian market data API with a free tier of 15,000 requests per month and up to three months of price history, plus four stocks…

Page language
pt-BR
Directory citations
2
Discovery sources
2
quantcommercial-proprietarytrading
73 Authority 73 / 100 Cited by 2 resources in this directory 2 discovery sources Directory record updated: 2026-10-11 How scoring works →
Screenshot review pendingResource information and source links remain available.
Repository

fin-stream

github.com

Real-time market data streaming in Rust: lock-free SPSC ring buffer, 100K+ ticks/second ingestion, multi-timeframe OHLCV construction, and Lorentz transforms…

GitHub stars
13
Language
Rust
Code license
MIT
quantmarket-datagithub
72 Authority 72 / 100 Cited by 2 resources in this directory 2 discovery sources Directory record updated: 2026-10-11 How scoring works →
Screenshot review pendingResource information and source links remain available.
Repository

newyorkfed

github.com

Client for the NY Fed Markets Data API: SOFR/EFFR/OBFR reference rates, SOFR averages and index, and SOMA holdings; no API key required

GitHub stars
1
Language
TypeScript
Code license
MIT
quantmarket-datagithub
72 Authority 72 / 100 Cited by 2 resources in this directory 2 discovery sources Directory record updated: 2026-10-11 How scoring works →
Screenshot review pendingResource information and source links remain available.
Repository

Planar.jl

github.com

Trading framework built around CCXT with Zarr-backed OHLCV persistence, contiguity-checked data feeds, isolated-margin position management, and a loop-based bac

GitHub stars
12
Language
Julia
Code license
Apache-2.0
quantbacktestinggithub
72 Authority 72 / 100 Cited by 2 resources in this directory 2 discovery sources Directory record updated: 2026-10-11 How scoring works →
Screenshot review pendingResource information and source links remain available.
Website

TickerLayer

tickerlayer.com

Derived, indicative multi-asset market data through REST, WebSocket, and MCP, with a permanent free tier of 3,000 REST requests per month and no credit…

Page language
en
Directory citations
2
Discovery sources
2
quantcommercial-proprietarytrading
71 Authority 71 / 100 Cited by 2 resources in this directory 2 discovery sources Directory record updated: 2026-10-11 How scoring works →
Screenshot review pendingResource information and source links remain available.
Repository

treasury-fiscaldata

github.com

Typed client for the US Treasury FiscalData API (debt, average interest rates, exchange rates) with pagination and filtering; no API key required

GitHub stars
2
Language
TypeScript
Code license
MIT
quantmarket-datagithub
71 Authority 71 / 100 Cited by 2 resources in this directory 2 discovery sources Directory record updated: 2026-10-11 How scoring works →
Screenshot review pendingResource information and source links remain available.
Repository

alphavantage/alpha_vantage_mcp

github.com

Official Alpha Vantage MCP server: real-time and historical data for stocks, forex, crypto, options, and ETFs

GitHub stars
218
Language
Python
Code license
MIT
ai-in-financemcp-serversgithub
69 Authority 69 / 100 Cited by 2 resources in this directory 2 discovery sources Directory record updated: 2026-10-11 How scoring works →
Screenshot review pendingResource information and source links remain available.
Website

Quiver Quantitative

quiverquant.com

Alternative data platform tracking congressional trades, lobbying, insider flows and government contracts.

Page language
en
Directory citations
2
Discovery sources
3
investinginsider-superinvestorstrading
69 Authority 69 / 100 Cited by 2 resources in this directory 3 discovery sources Directory record updated: 2026-10-11 How scoring works →
Screenshot review pendingResource information and source links remain available.
Website

Financial Modeling Prep (FMP)

site.financialmodelingprep.com

Financial data API covering statements, ratios, quotes, earnings and macro data for global listings.

Directory citations
2
Discovery sources
3
fundamentalsapifinancial-statements
69 Authority 69 / 100 Cited by 2 resources in this directory 3 discovery sources Directory record updated: 2026-10-11 How scoring works →
Screenshot review pendingResource information and source links remain available.
Website

Ethereum (ETH) Blockchain Explorer

etherscan.io

Etherscan allows you to explore and search the Ethereum blockchain for transactions, addresses, tokens, prices and other activities taking place on Ethereum (ETH)

Directory citations
1
Discovery sources
1
68 Authority 68 / 100 Cited by 1 resources in this directory 1 discovery sources Directory record updated: 2026-10-11 How scoring works →
Screenshot review pendingResource information and source links remain available.
Website

Nautilus Trader (docs)

nautilustrader.io

Documentation for the Nautilus Trader platform covering its event-driven engine and backtest API.

Page language
en
Directory citations
1
Discovery sources
1
frameworkdocumentationbacktesting
68 Authority 68 / 100 Cited by 1 resources in this directory 1 discovery sources Directory record updated: 2026-10-11 How scoring works →
Screenshot review pendingResource information and source links remain available.
Website

CoinPaprika

coinpaprika.com

Python - Cryptocurrency market data API with 20,000 free calls per month for personal use, including one year of daily price history, without an…

Page language
en
Directory citations
2
Discovery sources
3
fintechcryptotrading
67 Authority 67 / 100 Cited by 2 resources in this directory 3 discovery sources Directory record updated: 2026-10-11 How scoring works →
Screenshot review pendingResource information and source links remain available.
Documentation

API Version 1

docs.derive.xyz

One JSON-RPC API to integrate market-making systems, launch vaults, and give your users direct access to the Derive Exchange.

Page language
en
Directory citations
1
Discovery sources
1
crypto
67 Authority 67 / 100 Cited by 1 resources in this directory 1 discovery sources Directory record updated: 2026-10-11 How scoring works →

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