# Marketstack

> Real-time, intraday and historical stock market data API from APILayer. JSON REST API covering end-of-day and intraday prices across 70+ global exchanges, real-time stock prices, splits, dividends, commodities, company ratings, market indexes, bonds, ETF holdings, currencies, timezones, and SEC EDGAR filings data. Authenticate every request with the access_key query parameter; results paginate with limit (default 100, max 1000) and offset.

Generated by API Evangelist on 2026-07-22 from the artifacts in https://github.com/api-evangelist/marketstack (the provider publishes no llms.txt).

## API

- [Base URL v2](https://api.marketstack.com/v2): current version; v1 remains live at https://api.marketstack.com/v1
- [OpenAPI 3.0.3](https://api.swaggerhub.com/apis/apilayer-863/MarketstackAPIv2/2.0.0/swagger.json): official spec, 45 GET operations (mirrored at openapi/marketstack-v2-openapi.json)
- [Documentation](https://docs.apilayer.com/marketstack/docs/api-documentation): official docs portal
- [API Reference](https://marketstack.com/documentation_v2): v2 endpoint reference

## Key endpoints

- GET /eod, /eod/latest, /eod/{date}: end-of-day bars (symbols, date_from, date_to, limit, offset)
- GET /intraday, /intraday/latest, /intraday/{date}: intraday bars (interval data, IEX US)
- GET /stockprice: real-time stock prices (Professional plan and higher)
- GET /tickers/{symbol}, /tickerslist, /tickerinfo: ticker reference data
- GET /exchanges, /exchanges/{mic}, /exchanges/{mic}/tickers: exchange reference data (ISO 10383 MICs)
- GET /splits, /dividends: corporate actions
- GET /commodities, /commoditieshistory: commodity prices (Professional+)
- GET /indexlist, /indexinfo: market indexes
- GET /bondlist, /bond, /etflist, /etfholdings: bonds and ETF holdings
- GET /cik_code, /company_name, /submissions, /company_facts: SEC EDGAR data (Business+)
- GET /currencies, /timezones: supported currencies and timezones

## Access

- [Pricing](https://marketstack.com/pricing): Free (100 req/mo) / Basic $9.99 / Professional $49.99 / Business $149.99 / Enterprise
- [Sign Up Free](https://marketstack.com/signup/free)
- [Status Page](https://status.marketstack.com)
- Errors: JSON envelope {"error": {"code", "message"}}; 401 invalid_access_key, 403 function_access_restricted (plan gating), 429 rate_limit_reached (5 req/sec) - see errors/marketstack-problem-types.yml
- Rate limits: 5 requests/second plus a monthly plan quota - see rate-limits/marketstack-rate-limits.yml

## Repo artifacts

- apis.yml: APIs.json index of this provider
- openapi/marketstack-v2-openapi.json: official OpenAPI 3.0.3 (verbatim)
- overlays/marketstack-v2-overlay.yaml: API Evangelist overlay adding stable operationIds
- mcp/marketstack-mcp.yml: community MCP server (@shussey/marketstack on npm)
- mcp/marketstack-tool-crosswalk.yml: MCP tool to OpenAPI operation crosswalk
- packages/marketstack-packages.yml: community client libraries (npm, PyPI)
- conventions/marketstack-conventions.yml: pagination, filtering, envelope, versioning semantics
- errors/marketstack-problem-types.yml: full error-code catalog
- authentication/marketstack-authentication.yml: access_key auth profile
- plans/marketstack-plans.yml + rate-limits/marketstack-rate-limits.yml: commercial model
- skills/: agent skills grounded in the OpenAPI operations