Alpaca
Alpaca is an API-first commission-free stock and crypto trading broker offering trading, market data, options, and broker-as-a-service APIs. Alpaca publishes its OpenAPI specifications publicly via the alpacahq/alpaca-docs GitHub repository, with separate specs for Trading, Broker, Market Data, and OAuth.
Alpaca publishes 45 API contracts indexed on the APIs.io network, including Accounts API, Assets API, Calendar API, and 42 more. Tagged areas include Fintech, Trading, Stocks, Cryptocurrency, and Brokerage.
The Alpaca catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 2 Spectral governance rulesets.
Alpaca’s developer surface includes authentication, sandbox, changelog, CLI, API reference, getting-started guide, support, and 60 more developer resources.
What this lets a business do 3
Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →
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 |
|---|---|---|---|---|
| Capital Markets and Trading | covered | 21.3 | - | - |
| Raycast Store Extensions (first-party publishers + community-wrapped products) | covered | 21.3 | - | - |
| IFTTT Services (service publishers) | covered | 21.3 | - | - |
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 5
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 45
Individual APIs this provider publishes, each with its own machine-readable definition.
Alpaca Accounts API
The Accounts API from Alpaca — 14 operation(s) for accounts.
Alpaca Assets API
The Assets API from Alpaca — 2 operation(s) for assets.
Alpaca Calendar API
The Calendar API from Alpaca — 2 operation(s) for calendar.
Alpaca Clock API
The Clock API from Alpaca — 2 operation(s) for clock.
Alpaca Corporate Actions API
The Corporate Actions API from Alpaca — 1 operation(s) for corporate actions.
Alpaca Crypto Pricing Data API
The Crypto Pricing Data API API from Alpaca — 17 operation(s) for crypto pricing data api.
Alpaca Documents API
The Documents API from Alpaca — 3 operation(s) for documents.
Alpaca Events API
The Events API from Alpaca — 4 operation(s) for events.
Alpaca Funding API
The Funding API from Alpaca — 7 operation(s) for funding.
Alpaca Journals API
The Journals API from Alpaca — 4 operation(s) for journals.
Alpaca Logo API
The Logo API from Alpaca — 1 operation(s) for logo.
Alpaca News API
The News API from Alpaca — 1 operation(s) for news.
Alpaca Screener API
The Screener API from Alpaca — 1 operation(s) for screener.
Alpaca Stock Pricing Data API
The Stock Pricing Data API API from Alpaca — 16 operation(s) for stock pricing data api.
Alpaca Watchlist API
The Watchlist API from Alpaca — 2 operation(s) for watchlist.
Alpaca O Auth API
The OAuth API from Alpaca — 3 operation(s) for oauth.
Alpaca ACATS API
Endpoints for initiating and tracking ACATS transfers. Use the ACATS endpoints to create transfers and query their current state, and the [Admin Action Events Stream](#operation...
Alpaca Account Activities API
The Account Activities API from Alpaca — 2 operation(s) for account activities.
Alpaca Account Configurations API
The Account Configurations API from Alpaca — 1 operation(s) for account configurations.
Alpaca Agreements API
The Agreements API from Alpaca — 1 operation(s) for agreements.
Alpaca Blocked Symbols API
The Blocked Symbols API from Alpaca — 1 operation(s) for blocked symbols.
Alpaca Cash Interest API
The Cash Interest API from Alpaca — 2 operation(s) for cash interest.
Alpaca Country Info API
The Country Info API from Alpaca — 1 operation(s) for country info.
Alpaca Crypto API
Endpoints for cryptocurrencies.
Alpaca Crypto Funding API
The Crypto Funding API from Alpaca — 16 operation(s) for crypto funding.
Alpaca Fixed income API
Endpoints for fixed income data.
Alpaca FPSL Program API
The FPSL Program API from Alpaca — 3 operation(s) for fpsl program.
Alpaca Funding Wallets API
The Funding Wallets API from Alpaca — 8 operation(s) for funding wallets.
Alpaca Instant Funding API
The Instant Funding API from Alpaca — 7 operation(s) for instant funding.
Alpaca IPO API
Endpoints for discovering and tracking IPO (Initial Public Offering) lifecycle data. Use [`GET /v1/ipos`](#operation/listIPOOfferings) and [`GET /v1/ipos/{offering_reference}`](...
Alpaca IRA API
The IRA API from Alpaca — 1 operation(s) for ira.
Alpaca KYC API
The KYC API from Alpaca — 3 operation(s) for kyc.
Alpaca Locates API
Endpoints for locate requests and quotes.
Alpaca Logos API
The Logos API from Alpaca — 1 operation(s) for logos.
Alpaca O Auth2 API
OAuth2 endpoints
Alpaca Option API
Endpoints for option data.
Alpaca Orders API
The Orders API from Alpaca — 3 operation(s) for orders.
Alpaca Portfolio History API
The Portfolio History API from Alpaca — 2 operation(s) for portfolio history.
Alpaca Positions API
The Positions API from Alpaca — 4 operation(s) for positions.
Alpaca Rebalancing API
The Rebalancing API from Alpaca — 6 operation(s) for rebalancing.
Alpaca Reporting API
The Reporting API from Alpaca — 3 operation(s) for reporting.
Alpaca Stock API
Endpoints for stocks.
Alpaca Tokenization API
The Tokenization API from Alpaca — 11 operation(s) for tokenization.
Alpaca Trading API
The Trading API from Alpaca — 12 operation(s) for trading.
Alpaca Watchlists API
The Watchlists API from Alpaca — 4 operation(s) for watchlists.
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Postman Collections 22
Ready-to-run Postman collections for exercising this provider's APIs.
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Open Collections 25
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
Broker Account Activities API
OPEN COLLECTIONBroker Account Activities Account Configurations API
OPEN COLLECTIONBroker Account Activities Accounts API
OPEN COLLECTIONBroker Account Activities Assets API
OPEN COLLECTIONBroker API
OPEN COLLECTIONBroker Account Activities Calendar API
OPEN COLLECTIONBroker Account Activities Clock API
OPEN COLLECTIONBroker Account Activities Corporate Actions API
OPEN COLLECTIONBroker Account Activities Crypto Pricing Data API API
OPEN COLLECTIONMarket Data API
OPEN COLLECTIONBroker Account Activities Documents API
OPEN COLLECTIONBroker Account Activities Events API
OPEN COLLECTIONBroker Account Activities Funding API
OPEN COLLECTIONBroker Account Activities Journals API
OPEN COLLECTIONBroker Account Activities Logo API
OPEN COLLECTIONBroker Account Activities News API
OPEN COLLECTIONBroker Account Activities OAuth API
OPEN COLLECTIONBroker Account Activities Orders API
OPEN COLLECTIONBroker Account Activities Portfolio History API
OPEN COLLECTIONBroker Account Activities Positions API
OPEN COLLECTIONBroker Account Activities Screener API
OPEN COLLECTIONBroker Account Activities Stock Pricing Data API API
OPEN COLLECTIONBroker Account Activities Trading API
OPEN COLLECTIONBroker Account Activities Watchlist API
OPEN COLLECTIONBroker Account Activities Watchlists API
OPEN COLLECTIONScroll for all 25
MCP Servers 1
Model Context Protocol servers that expose these APIs to AI agents.
Alpaca MCP Server
Remote MCP server at broker-api.alpaca.markets requiring OAuth; 69 tools listed.
MCP SERVERAgent Skills 12
Packaged agent skills for driving this provider's APIs from an AI assistant.
alpaca-broker-account-onboarding
AGENT SKILLalpaca-broker-funding-transfers
AGENT SKILLalpaca-broker-integration
AGENT SKILLalpaca-broker-journals
AGENT SKILLalpaca-broker-market-data
AGENT SKILLalpaca-broker-money-precision
AGENT SKILLalpaca-broker-rate-limits-resilience
AGENT SKILLalpaca-broker-reconciliation-idempotency
AGENT SKILLalpaca-broker-sse-events
AGENT SKILLalpaca-broker-trading-orders
AGENT SKILLalpaca-trading-backtest
AGENT SKILLalpaca-trading-order-lifecycle
AGENT SKILLScroll for all 12
Alpaca API pricing
Prices published by Alpaca, read 2026-10-28 from alpaca.markets/data.
| Plan | Price |
|---|---|
| Free | $0/mo Includes: 200 API calls/min, 15 minute delay via API, 7+ years historical, IEX exchange, websockets limited to |
| Algo Trader Plus | $99/mo Includes: Unlimited API calls, real-time via websocket, 7+ years historical, all US exchanges, unlimited webso |
Plan details, limits and sources →
Rate limits
- Market Data historical API calls (Basic, stocks): 200 / min
- Market Data historical API calls (Algo Trader Plus, stocks): 10,000 / min
- Websocket subscriptions (Basic, stocks): 30 symbols
Billed by: subscription · FinOps profile →
Pricing Plans 2
Published pricing tiers and plan structures.
Alpaca Plans Pricing
PLANSRate Limits 1
Documented rate limits and quota policies.
Alpaca Rate Limits
RATE LIMITSService Levels 1
Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.
Alpaca
SLAFinOps 1
Cost, billing, and metering signals for API financial operations.
Alpaca Finops
FINOPSEvent Specifications 1
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Alpaca WebSocket Streaming APIs
AsyncAPI 2.6 description of Alpaca's public WebSocket streaming APIs. Covers real-time stock market data (IEX / SIP / delayed SIP / BOATS), real-time crypto market data (US and ...
ASYNCAPISemantic Vocabularies 1
JSON-LD contexts and semantic vocabularies used across these APIs.
Alpaca Context
JSON-LDSpectral Rules 2
Spectral governance rulesets for linting and validating these APIs.
Alpaca — asyncapi rules
SPECTRALAlpaca API Rules
SPECTRALOpenAPI Overlays 4
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.
Alpaca Oauth Api Overlay
DERIVEDAlpaca Trading Api Overlay
DERIVEDAlpaca Us Trading Api Overlay
DERIVEDJSON Schema 52
Standalone JSON Schema definitions for this provider's data models.
AccountCreationRequest
JSON SCHEMAAccountExtended
JSON SCHEMAAccount
JSON SCHEMAAccountStatusEvent
JSON SCHEMAACHRelationship
JSON SCHEMAAnnouncement
JSON SCHEMAAsset
JSON SCHEMAAssets
JSON SCHEMAAuthorizeOAuthTokenResponse
JSON SCHEMABank
JSON SCHEMABarsResponse
JSON SCHEMABatchJournalRequest
JSON SCHEMABatchJournalResponse
JSON SCHEMACalendar
JSON SCHEMAClock
JSON SCHEMAcorporate_action_event
JSON SCHEMAcorporate_actions_resp
JSON SCHEMACreateACHRelationshipRequest
JSON SCHEMACreateJournalRequest
JSON SCHEMACreateOrderRequest
JSON SCHEMACreateTransferRequest
JSON SCHEMACreateWatchlistRequest
JSON SCHEMADocument
JSON SCHEMAfixed_income_latest_prices_resp
JSON SCHEMAfixed_income_latest_quotes_resp
JSON SCHEMAGetNewsResponse
JSON SCHEMAIPOEvent
JSON SCHEMAIssueOAuthTokenResponse
JSON SCHEMAJournal
JSON SCHEMAJournalStatusEvent
JSON SCHEMAMarketMovers
JSON SCHEMAmost_actives_resp
JSON SCHEMAmovers_resp
JSON SCHEMAMultiBarsResponse
JSON SCHEMAMultiQuotesReponse
JSON SCHEMAMultiSnapshotResponse
JSON SCHEMAMultiTradesResponse
JSON SCHEMAOathClientResponse
JSON SCHEMAOAuthTokenRequest
JSON SCHEMAOptionContract
JSON SCHEMAOrder
JSON SCHEMAPosition
JSON SCHEMASnapshot
JSON SCHEMAstock_auctions_resp
JSON SCHEMAtoken_request
JSON SCHEMAtoken_response
JSON SCHEMATradeAccount
JSON SCHEMATradeUpdateEvent
JSON SCHEMATradeUpdateEvent
JSON SCHEMATransfer
JSON SCHEMATransferStatusEvent
JSON SCHEMAWatchlist
JSON SCHEMAScroll for all 52
Security Posture 4
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes governing access to this provider's APIs.
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 3
Reference material describing how the API behaves
Agent Surfaces 6
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 10
Pagination, idempotency, versioning, errors, and events
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Build 9
SDKs, sample code, and the tooling you integrate with
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Access & Security 9
Authentication, authorization, and security posture
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Operate 8
Status, limits, changes, and where to get help
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Commercial 5
Pricing, plans, and the legal terms of use
Company 6
The organization behind the API
Other 6
Properties that don't map to a standard resource type
Source (apis.yml)
Alpaca API — frequently asked questions
Does Alpaca have an API?
Yes. APIs.io lists 45 APIs from Alpaca, including Alpaca Accounts API, Alpaca Assets API and Alpaca Calendar API, and 42 more.
Is there an OpenAPI specification for the Alpaca API?
Yes. APIs.io indexes 45 OpenAPI specifications for Alpaca, each linked for download from this page.
How do I authenticate with the Alpaca API?
Alpaca documents its authentication (apiKey/http/oauth2 · 5 schemes). The details are profiled on APIs.io as Alpaca Authentication.
How much does the Alpaca API cost?
Alpaca publishes its prices; its Free plan is $0/mo as of 2026-10-28. APIs.io lists 2 pricing plans for Alpaca, with each plan's price, limits and inclusions under Pricing on this page.
Does Alpaca have an MCP server?
Yes. APIs.io lists 1 MCP server for Alpaca: Remote MCP server at broker-api.alpaca.markets requiring OAuth; 69 tools listed.
Is the Alpaca API ready for AI agents?
Alpaca has a Kin Score of 69.9 out of 100 (exemplar) and an Agent Readiness score of 64.9 (agent-native), scored by API Evangelist on 2026-11-06.
Work with this as data
Every provider here is available over the APIs.io API and to AI agents over MCP.