Market dataactive
Alpaca
US stock market data with explicit IEX or consolidated SIP feed selection, historical REST queries, and live WebSocket streams.
- Auth
- Trading API users: APCA-API-KEY-ID and APCA-API-SECRET-KEY headers
- Verified
36 verified profiles
The API catalog.
Each profile is an editorial summary with visible official sources and dated mutable facts.
Market dataactive
Alpha Vantage
A function-based market-data API for equities, options, forex, crypto, commodities, economic indicators, fundamentals, and technical indicators.
- Auth
- API key in the apikey query parameter
- Verified
Public dataactive
BOK ECOS
The Bank of Korea's official economic-statistics API for Korean monetary, financial, price, national-account, and related time series.
- Auth
- ECOS API key embedded in the request path
- Verified
AI & model APIsactive
Claude API
Anthropic's API for Claude messages, tool use, token counting, batches, files, and related platform capabilities.
- Auth
- Authorization bearer token or x-api-key, plus an anthropic-version header
- Verified
Developer platformsactive
Cloudflare API
A broad control-plane API for Cloudflare accounts, zones, DNS, Workers, Pages, storage, and security products.
- Auth
- Scoped API token in Authorization Bearer header; legacy global API key also documented
- Verified
Market dataactive
CoinGecko API
Crypto asset prices, metadata, markets, exchanges, NFTs, and onchain datasets.
- Auth
- Plan-specific API key header for Demo or Pro access
- Verified
Currency dataactive
Currencylayer
A hosted foreign-exchange API for live, historical, conversion, timeframe, and currency-change queries.
- Auth
- Access key supplied with the access_key request parameter
- Verified
AI & model APIsactive
DeepSeek Search & Fetch
Dedicated web retrieval APIs for agent workflows, with tool-specific authentication, usage accounting and limits separate from model inference.
- Auth
- Authorization: Bearer with a DeepSeek API key; JSON content type
- Verified
Market dataactive
EODHD
A broad financial-data API covering end-of-day prices, fundamentals, corporate actions, intraday data, news, and more.
- Auth
- API token in the api_token query parameter
- Verified
Market dataactive
Financial Modeling Prep API
Comprehensive financial data: real-time quotes, 30 years of financial statements, ratios, insider transactions, and analyst estimates. Strong for fundamental analysis.
- Auth
- API key via apikey request header or query parameter
- Verified
Market dataactive
Finnhub API
Real-time and historical market data for stocks, forex, and crypto. Generous free tier for US stocks; premium endpoints (e.g. historical candles) require paid plans.
- Auth
- API key via `token` query param or `X-Finnhub-Token` header
- Verified
Public dataactive
FRED API
Official programmatic access to FRED economic series, observations, releases, sources, and metadata.
- Auth
- API key query parameter
- Verified
Public dataactive
FSC Basic Fund Product Information
An official Korean public API for fund names, standard codes, operators, categories, types, and reference dates.
- Auth
- data.go.kr serviceKey query parameter
- Verified
Public dataactive
FSS DART API
Korea's official corporate filing system (like US EDGAR) — financial statements, disclosures, and company info for KOSPI/KOSDAQ listed companies.
- Auth
- API key (crtfc_key) in query parameter
- Verified
AI & model APIsactive
Gemini API
Google's developer API for Gemini models, multimodal generation, embeddings, files, tools, and live interactions.
- Auth
- Gemini API key in x-goog-api-key; current documentation distinguishes authorization keys from standard keys
- Verified
Developer platformsactive
GitHub REST API
GitHub's official REST surface for repositories, collaboration, Actions, Git data, and account resources.
- Auth
- Bearer token recommended; selected public resources allow unauthenticated requests
- Verified
Market dataactive
KRX API
Official market data from Korea Exchange — KOSPI, KOSDAQ, ETF prices, and trading statistics.
- Auth
- Issued key in AUTH_KEY request header; service use requires approval
- Verified
Maps & weatheractive
Mapbox APIs
Mapping platform APIs for maps, tiles, styles, geocoding, navigation, routing, and spatial analysis.
- Auth
- Access token, generally passed as access_token
- Verified
Market dataactive
Massive
A market-data platform for stocks, options, futures, indices, forex, crypto, economic, and alternative datasets.
- Auth
- Bearer API key or apiKey query parameter
- Verified
Developer platformsactive
Neon API
Serverless PostgreSQL platform with branching, autoscaling, and a management REST API.
- Auth
- API key via Bearer token
- Verified
Communicationsactive
Notion API
A workspace content API for pages, blocks, data sources, comments, users, search, and webhooks.
- Auth
- Bearer token from an internal, personal, or OAuth connection
- Verified
Maps & weatheractive
Open-Meteo API
Weather forecast, historical, marine, air-quality, and geocoding APIs with an accessible public tier.
- Auth
- No API key for non-commercial public access; commercial customer endpoints differ
- Verified
AI & model APIsactive
OpenAI API
A model platform for text, multimodal input, structured outputs, tools, embeddings, image, audio, and agent-oriented workflows.
- Auth
- Bearer API key in the Authorization header
- Verified
Developer platformsactive
Oracle Cloud Infrastructure API
REST APIs for provisioning and managing Oracle Cloud Infrastructure resources including compute instances, networking, and storage.
- Auth
- RSA key pair with API key fingerprint, signed requests
- Verified
Paymentsactive
Paddle Billing API
Merchant-of-record billing APIs for products, prices, customers, transactions, and subscriptions.
- Auth
- Bearer API key in Authorization header
- Verified
Developer platformsactive
Render API
Cloud platform API for managing web services, databases, background workers, and deployments.
- Auth
- API key via Bearer token
- Verified
Public dataactive
SEC EDGAR APIs
Official JSON and bulk-data access to company filing submissions and XBRL facts.
- Auth
- No API key; declare a responsible User-Agent per SEC policy
- Verified
Public dataresearch
SEIBRO
Korea Securities Depository securities information portal, with a research case on dividend list completeness and count reconciliation.
- Auth
- Browser access does not establish an unauthenticated server API contract; reusable API authentication is unverified.
- Verified
Communicationsactive
Slack Web API
Method-oriented APIs for Slack messages, conversations, users, files, views, and workspace integrations.
- Auth
- OAuth access token in Authorization Bearer header
- Verified
Paymentsactive
Stripe API
A mature payments and billing API covering checkout, payment intents, subscriptions, invoicing, and platforms.
- Auth
- Secret key with HTTP Basic authentication; publishable keys have limited client uses
- Verified
Developer platformsactive
Supabase Data APIs
Auto-generated REST and GraphQL data APIs backed by a project's Postgres schema, alongside Auth, Storage, and Realtime.
- Auth
- Project key plus user JWT or service-role context
- Verified
Public dataactive
Treasury Fiscal Data API
Official U.S. Treasury fiscal datasets with filtering, sorting, field selection, and pagination.
- Auth
- No authentication required for public endpoints
- Verified
Market dataactive
Twelve Data API
Market data for stocks, forex, crypto, ETFs, and indices via REST and WebSocket. 100+ technical indicators computed server-side. Generous free tier for prototyping.
- Auth
- API key via `apikey` query param or `Authorization: apikey` header
- Verified
Communicationsactive
Twilio Messaging API
Programmable messaging APIs for SMS, MMS, WhatsApp, media, and delivery callbacks.
- Auth
- HTTP Basic authentication using Account SID and Auth Token; API keys recommended for production
- Verified
Public dataactive
World Bank Indicators API
Public access to World Bank development indicators and their country, source, and topic metadata.
- Auth
- No API key or authentication required
- Verified
Market dataactive
yfinance
An open-source Python library that retrieves market data through Yahoo Finance's publicly available interfaces.
- Auth
- No user-managed API key for the normal package interface
- Verified