# Yearn Finance Chains API

**Canonical:** https://apis.io/apis/yearn/yearn-chains-api/  
**Provider:** Yearn Finance — https://apis.io/providers/yearn/  
**Base URL:** https://ydaemon.yearn.fi  
**Documentation:** https://docs.yearn.fi/developers/data-services/yearn-data

Yearn Finance Chains API is one of 5 APIs that [Yearn Finance](https://apis.io/providers/yearn/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Chains. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and a GitHub repository.

Supported blockchain network information

## Machine-readable artifacts (4)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/yearn/refs/heads/main/openapi/yearn-chains-api-openapi.yml
- **Documentation** — https://docs.yearn.fi/developers/data-services/yearn-data
- **GitHubRepository** — https://github.com/yearn/ydaemon
- **GraphQL** — https://raw.githubusercontent.com/api-evangelist/yearn/refs/heads/main/graphql/yearn-graphql.md

## Other Yearn Finance APIs (4)

- [Kong GraphQL API](https://apis.io/apis/yearn/kong-graphql-api/)
- [Yearn Finance Info API](https://apis.io/apis/yearn/yearn-info-api/)
- [Yearn Finance TVL API](https://apis.io/apis/yearn/yearn-tvl-api/)
- [Yearn Finance Vaults API](https://apis.io/apis/yearn/yearn-vaults-api/)

## Tags

Chains

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