# Capital One Account Lookup API

**Canonical:** https://apis.io/apis/capital-one/account-lookup-api/  
**Provider:** Capital One — https://apis.io/providers/capital-one/  
**Base URL:** https://api-sandbox.capitalone.com  
**Documentation:** https://developer.capitalone.com/products/account-lookup?id=24064-1

Capital One Account Lookup API is one of 14 APIs that [Capital One](https://apis.io/providers/capital-one/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Account, Banking, and United States. The published artifact set on APIs.io includes API documentation.

The Capital One Account Lookup API is a DevExchange product that lets approved partners resolve and retrieve consumer account information such as balances, transaction history, and account status. Integrators use it to surface up-to-date Capital One account details inside partner applications and dashboards. Access is secured with OAuth 2.0 client credentials, exercised first in the DevExchange sandbox and then promoted to production after partner approval. Documentation is HTML-only on the DevExchange portal; no downloadable OpenAPI is published.

## Machine-readable artifacts (3)

- **Documentation** — https://developer.capitalone.com/products/account-lookup?id=24064-1
- **GraphQL** — https://raw.githubusercontent.com/api-evangelist/capital-one/refs/heads/main/graphql/capital-one-graphql.md
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/capital-one/refs/heads/main/apis.yml

## Other Capital One APIs (12)

- [Capital One Authorizations API](https://apis.io/apis/capital-one/authorizations-api/)
- [Capital One Credit Offers API](https://apis.io/apis/capital-one/credit-offers-api/)
- [Capital One Customer Transactions](https://apis.io/apis/capital-one/customer-transactions/)
- [Capital One Data Protection and Client Authentication Public Key Sharing API](https://apis.io/apis/capital-one/data-protection-and-client-authentication-public-key-sharing-api/)
- [Capital One Digital Auto Financing Credit Application API](https://apis.io/apis/capital-one/digital-auto-financing-credit-application-api/)
- [Capital One Enhanced Decisioning Data API](https://apis.io/apis/capital-one/enhanced-decisioning-data-api/)
- [Capital One In-Store Credit Card Payments API](https://apis.io/apis/capital-one/in-store-credit-card-payments-api/)
- [Capital One POS Credit Card Application API](https://apis.io/apis/capital-one/pos-credit-card-application-api/)
- [Capital One Partner Account Summary API](https://apis.io/apis/capital-one/partner-account-summary-api/)
- [Capital One Pre-Application Orchestrator API](https://apis.io/apis/capital-one/pre-application-orchestrator-api/)
- [Capital One Real-Time Proactive Prescreen API](https://apis.io/apis/capital-one/real-time-proactive-prescreen-api/)
- [Capital One Retrieve Consumer Bank Products API](https://apis.io/apis/capital-one/retrieve-consumer-bank-products-api/)

## Tags

Account, Banking, United States

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/capital-one/account-lookup-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/capital-one/.