> ## Documentation Index > Fetch the complete documentation index at: https://docs.groundtech.co/llms.txt > Use this file to discover all available pages before exploring further. # List MicroVault yield sources > Returns the yield sources admitted for MicroVault use on a chain, including APY, processing-time estimates, and synchronous or asynchronous capabilities. Discover the environment-specific yield sources admitted for MicroVault allocation. MicroVaults are in private preview for enabled sandbox organizations on Ethereum Sepolia. ## OpenAPI ````yaml swagger/swagger-combined.yaml GET /v2/microvaults/yield-sources openapi: 3.0.0 info: title: Ground API description: Core API for Portfolio Wallets, gtokens, MicroVaults, and webhooks. version: 2.0.0 servers: - url: https://sandbox.groundtech.co - url: https://production.groundtech.co security: - bearerAuth: [] tags: - name: System description: System health and utility endpoints. - name: Sandbox Faucets description: Sandbox-only test token faucets. - name: Portfolio Wallets description: >- Portfolio wallets with strategy allocation, deposits, withdrawals, and yield positions. - name: gVaults description: >- Direct access to gtokens with deposit access controls and optional fee wrappers. - name: MicroVaults description: >- Customer-owned onchain vaults with externally held ERC-20 shares. Private preview in sandbox on Ethereum Sepolia. - name: Webhook Endpoints description: Webhook endpoint management for portfolio wallet notifications. paths: /v2/microvaults/yield-sources: get: tags: - MicroVaults summary: List available yield sources description: >- Returns the yield sources admitted for MicroVault use on a chain, including APY, processing-time estimates, and synchronous or asynchronous capabilities. operationId: listMicrovaultYieldSources parameters: - name: chainId in: query required: true schema: type: integer minimum: 1 example: 11155111 description: EVM chain where the MicroVault will be created or already exists. responses: '200': description: Sources available on the requested chain. content: application/json: schema: $ref: '#/components/schemas/MicroVaultYieldSourceList' '401': $ref: '#/components/responses/Unauthorized' components: schemas: MicroVaultYieldSourceList: type: object required: - yieldSources properties: yieldSources: type: array description: >- Sources available for attachment to a new MicroVault on the requested chain. items: type: object additionalProperties: true properties: id: allOf: - $ref: '#/components/schemas/UuidV4' description: Ground record identifier for the source. chainId: type: integer description: EVM chain containing the source contracts. sourceId: allOf: - $ref: '#/components/schemas/MicroVaultBytes32' description: Source identifier used in strategy and source-mode requests. sourceAddress: allOf: - $ref: '#/components/schemas/NonzeroEvmAddress' description: Contract where the underlying yield position is held. positionTokenAddress: allOf: - $ref: '#/components/schemas/NonzeroEvmAddress' description: >- Token whose balance represents the vault's position in this source. baseAssetAddress: allOf: - $ref: '#/components/schemas/NonzeroEvmAddress' description: Token accepted by this source. sourceKind: type: string description: >- Integration type that determines whether entry and exit are synchronous or asynchronous. positionKey: type: string description: >- Ground position identifier shared with the corresponding portfolio yield source. displayName: type: string description: Display name shown for the yield source. providerName: type: string description: Provider or protocol operating the yield source. tickerLabel: type: string description: Compact source label suitable for portfolio displays. apyBps: type: integer nullable: true description: >- Current annual percentage yield in basis points, or `null` when unavailable. expectedProcessingSeconds: type: integer nullable: true description: >- Typical asynchronous processing time in seconds, or `null` for synchronous or unknown timing. maxProcessingSeconds: type: integer nullable: true description: >- Upper processing-time estimate in seconds, or `null` when unavailable. capabilities: type: object additionalProperties: type: boolean description: >- Whether the source supports synchronous and asynchronous deposits and redemptions. example: yieldSources: - id: e6c8b358-34cb-49ef-a7f0-e8e2ef7a619b chainId: 11155111 sourceId: '0x1111111111111111111111111111111111111111111111111111111111111111' sourceAddress: '0x2222222222222222222222222222222222222222' positionTokenAddress: '0x2222222222222222222222222222222222222222' baseAssetAddress: '0x1c7d4b196cb0c7b01d743fbc6116a902379c7238' sourceKind: direct_erc4626 positionKey: ethereum_morpho_steakhouse_usdc displayName: Morpho Steakhouse USDC providerName: Morpho tickerLabel: Steakhouse USDC apyBps: 500 expectedProcessingSeconds: null maxProcessingSeconds: null capabilities: syncDeposit: true syncRedeem: true asyncDeposit: false asyncRedeem: false UuidV4: type: string format: uuid pattern: >- ^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-4[0-9a-fA-F]{3}-[89aAbB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}$ example: 8f4c52d7-62ab-4db9-a964-92f481f6b851 MicroVaultBytes32: type: string pattern: ^0x[0-9a-fA-F]{64}$ example: '0x1111111111111111111111111111111111111111111111111111111111111111' NonzeroEvmAddress: type: string description: >- Valid nonzero EVM EOA or contract address. Mixed-case values must use a valid EIP-55 checksum. minLength: 42 maxLength: 42 pattern: ^0x(?!0{40}$)[0-9a-fA-F]{40}$ example: '0x3bf25a73a1f1033c2d50ac65f3c9d6a44123db81' AuthErrorResponse: type: object required: - error properties: error: type: string description: Authentication or authorization error message. message: type: string nullable: true description: Additional auth middleware detail, when present. code: type: string nullable: true enum: - unauthenticated - forbidden description: >- Some auth and scope failures include a stable code; middleware errors may omit it. responses: Unauthorized: description: >- The request is missing a valid bearer token, or the token is invalid or expired. content: application/json: schema: $ref: '#/components/schemas/AuthErrorResponse' example: error: Unauthenticated request message: Missing or invalid bearer token securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: JWT ````