Yearn Finance

name: Yearn Finance
description: >-
  Yearn Finance is a DeFi yield aggregator that automates yield farming strategies
  across EVM-compatible networks. It provides REST and GraphQL APIs for accessing
  vault data, APY rates, strategy information, user positions, TVL metrics, and
  protocol analytics across Ethereum, Optimism, Polygon, Fantom, Base, and Arbitrum.
image: https://yearn.fi/logo.svg
tags:
  - DeFi
  - Yield Aggregator
  - Vaults
  - EVM
  - Web3
  - Blockchain
  - Finance
url: https://yearn.fi
apis:
  - name: yDaemon REST API
    description: >-
      The primary REST API for Yearn Finance providing access to vault data,
      APY calculations, TVL metrics, strategy information, and protocol analytics
      across all supported EVM networks. Used by the production Yearn frontends.
    humanURL: https://docs.yearn.fi/developers/data-services/yearn-data
    baseURL: https://ydaemon.yearn.fi
    tags:
      - Vaults
      - APY
      - TVL
      - Strategies
      - DeFi
    properties:
      - type: Documentation
        url: https://docs.yearn.fi/developers/data-services/yearn-data
      - type: OpenAPI
        url: https://ydaemon.yearn.fi/docs
      - type: GitHubRepository
        url: https://github.com/yearn/ydaemon
    contact:
      - FN: Yearn Finance
        email: ''
        X-twitter: iearnfinance
    apis:
      - name: Get All Vaults
        description: >-
          Retrieve all vaults for a specified chain ID. Supports pagination,
          ordering, and filtering by strategy conditions and details.
        humanURL: https://docs.yearn.fi/developers/data-services/yearn-data
        baseURL: https://ydaemon.yearn.fi
        path: /{chainID}/vaults/all
        method: GET
        tags:
          - Vaults
          - Chains
        properties:
          - type: Documentation
            url: https://docs.yearn.fi/developers/data-services/yearn-data
      - name: Get Vault by Address
        description: >-
          Retrieve data for a single vault by chain ID and contract address.
          Returns vault metadata, APY, TVL, strategy details, and token information.
        humanURL: https://docs.yearn.fi/developers/data-services/yearn-data
        baseURL: https://ydaemon.yearn.fi
        path: /{chainID}/vaults/{address}
        method: GET
        tags:
          - Vaults
        properties:
          - type: Documentation
            url: https://docs.yearn.fi/developers/data-services/yearn-data
      - name: Get Vaults TVL
        description: >-
          Returns Total Value Locked metrics for all vaults on a specified chain.
        humanURL: https://docs.yearn.fi/developers/data-services/yearn-data
        baseURL: https://ydaemon.yearn.fi
        path: /{chainID}/vaults/tvl
        method: GET
        tags:
          - TVL
          - Analytics
        properties:
          - type: Documentation
            url: https://docs.yearn.fi/developers/data-services/yearn-data
      - name: Get Supported Chains
        description: >-
          Returns the list of blockchain networks supported by the yDaemon API,
          including Ethereum, Optimism, Polygon, Fantom, Base, and Arbitrum.
        humanURL: https://docs.yearn.fi/developers/data-services/yearn-data
        baseURL: https://ydaemon.yearn.fi
        path: /info/chains
        method: GET
        tags:
          - Chains
          - Info
        properties:
          - type: Documentation
            url: https://docs.yearn.fi/developers/data-services/yearn-data
      - name: Get Blacklisted Vaults
        description: >-
          Returns the list of vaults blacklisted and excluded from results
          across all supported networks.
        humanURL: https://docs.yearn.fi/developers/data-services/yearn-data
        baseURL: https://ydaemon.yearn.fi
        path: /info/vaults/blacklisted
        method: GET
        tags:
          - Vaults
          - Info
        properties:
          - type: Documentation
            url: https://docs.yearn.fi/developers/data-services/yearn-data

  - name: Kong GraphQL API
    description: >-
      An integrated indexing service and GraphQL API providing comprehensive
      data on Yearn V2 and V3 vault ecosystems, including contract snapshots,
      event histories, vault-strategy relationships, fees, rewards, APY,
      and TVL timeseries data.
    humanURL: https://docs.yearn.fi/developers/data-services/yearn-data
    baseURL: https://kong.yearn.fi
    tags:
      - GraphQL
      - Vaults
      - Analytics
      - Strategies
      - Events
    properties:
      - type: Documentation
        url: https://docs.yearn.fi/developers/data-services/yearn-data
      - type: GitHubRepository
        url: https://github.com/yearn/kong
    contact:
      - FN: Yearn Finance
        email: ''
        X-twitter: iearnfinance
    apis:
      - name: Kong GraphQL Query
        description: >-
          GraphQL endpoint for querying Yearn V2 and V3 vault ecosystem data
          including snapshots, events, APY timeseries, TVL, strategies, fees,
          rewards, and vault metadata.
        humanURL: https://docs.yearn.fi/developers/data-services/yearn-data
        baseURL: https://kong.yearn.fi
        path: /api/gql
        method: POST
        tags:
          - GraphQL
          - Vaults
          - Analytics
        properties:
          - type: Documentation
            url: https://docs.yearn.fi/developers/data-services/yearn-data

modified: 2026-06-13
maintainers:
  - FN: Kin Lane
    email: [email protected]