> ## Documentation Index > Fetch the complete documentation index at: https://docs.vaults.fyi/llms.txt > Use this file to discover all available pages before exploring further. # Get best vault > Returns the single best vault opportunity for the user, based on balance and yield analysis. ## OpenAPI ````yaml https://api.vaults.fyi/v2/documentation/json get /v2/portfolio/best-vault/{userAddress} openapi: 3.0.3 info: title: Vaults.fyi API version: 2.0.0 description: >- The Vaults.fyi V2 API offers a streamlined, better structured, and more performant interface for accessing DeFi vault data. This simplified version delivers optimized performance while maintaining comprehensive coverage across networks. Basic API key use is limited to 10 requests per minute. servers: - url: https://api.vaults.fyi description: Vaults.fyi API security: [] tags: - name: General description: >- Core informational endpoints providing essential reference data such as networks, assets, and vaults listings for orientation and exploration. - name: Detailed Vaults description: >- Comprehensive vault data endpoints delivering in-depth analytics including APY metrics, TVL statistics, rewards breakdowns, and risk scores. - name: Benchmarks description: >- Vaults.fyi curated benchmark endpoints providing aggregated yield performance data for USD and ETH denominated assets across selected networks. - name: Historical description: >- Endpoints returning time-series historical data for vault metrics, enabling trend analysis and performance tracking over customizable periods. - name: Portfolio description: >- Advanced endpoints providing detailed information about user balances, active positions, historical interactions, and tailored investment opportunities. - name: Transactions description: >- Endpoints for executing vault deposits, withdrawals, and reward claims with ready-to-sign transaction payloads. - name: NRT description: >- NRT (Near-Real-Time) endpoints return live vault data updated continuously throughout the day, including current share price, total supply, TVL, and APY. - name: Health paths: /v2/portfolio/best-vault/{userAddress}: get: tags: - Portfolio summary: Get best vault description: >- Returns the single best vault opportunity for the user, based on balance and yield analysis. operationId: getBestVault parameters: - schema: type: array items: type: string minLength: 1 in: query name: allowedAssets required: false description: Assets to be included by symbol(ticker). - schema: type: array items: type: string minLength: 1 in: query name: disallowedAssets required: false description: >- Assets to be excluded by symbol(ticker). The parameter is ignored if "allowedAssets" is specified. - schema: type: array items: type: string minLength: 1 in: query name: allowedProtocols required: false description: Protocols to be included by name. - schema: type: array items: type: string minLength: 1 in: query name: disallowedProtocols required: false description: >- Protocols to be excluded by name. The parameter is ignored if "allowedProtocols" is specified. - schema: type: integer default: 100000 in: query name: minTvl required: false description: Minimum TVL in USD of the vaults to be included - schema: type: number minimum: 0 in: query name: minVaultScore required: false description: Minimum vault score required for a vault to be included - schema: type: boolean in: query name: onlyTransactional required: false description: >- Include only vaults that are supported in the transactional interface. - schema: type: boolean default: 'true' in: query name: onlyAppFeatured required: false description: Include only vaults that are featured in app.vaults.fyi - schema: type: boolean default: false in: query name: allowCorrupted required: false description: Allow inclusion of corrupted vaults. - schema: type: boolean default: 'false' in: query name: allowVaultsWithWarnings required: false description: Whether to include vaults with warnings. Defaults to false. - schema: type: array items: type: string enum: - mainnet - optimism - arbitrum - polygon - gnosis - base - unichain - swellchain - celo - worldchain - berachain - ink - bsc - hyperliquid - plasma - avalanche - katana - linea - mega-eth - monad - etherlink - eip155:1 - eip155:10 - eip155:42161 - eip155:137 - eip155:100 - eip155:8453 - eip155:130 - eip155:1923 - eip155:42220 - eip155:480 - eip155:80094 - eip155:57073 - eip155:56 - eip155:999 - eip155:9745 - eip155:43114 - eip155:747474 - eip155:59144 - eip155:4326 - eip155:143 - eip155:42793 description: Include only vaults with provided network(name or CAIP) default: - base - mainnet - arbitrum - optimism in: query name: allowedNetworks required: false description: Networks to be included (name or CAIP). - schema: type: array items: type: string enum: - mainnet - optimism - arbitrum - polygon - gnosis - base - unichain - swellchain - celo - worldchain - berachain - ink - bsc - hyperliquid - plasma - avalanche - katana - linea - mega-eth - monad - etherlink - eip155:1 - eip155:10 - eip155:42161 - eip155:137 - eip155:100 - eip155:8453 - eip155:130 - eip155:1923 - eip155:42220 - eip155:480 - eip155:80094 - eip155:57073 - eip155:56 - eip155:999 - eip155:9745 - eip155:43114 - eip155:747474 - eip155:59144 - eip155:4326 - eip155:143 - eip155:42793 description: Include only vaults with provided network(name or CAIP) in: query name: disallowedNetworks required: false description: >- Networks to be excluded (name or CAIP). The parameter is ignored if "allowedNetworks" is specified. - schema: type: string enum: - 1day - 7day - 30day default: 7day in: query name: apyInterval required: false description: 'Interval for APY data. Possible values: 1day, 7day, 30day' - schema: type: number minimum: 0 in: query name: minApy required: false description: Minimum APY of the vault to be included - schema: type: number in: query name: maxApy required: false description: Maximum APY (in decimal) of the vaults to be included - schema: type: integer in: query name: maxTvl required: false description: Maximum TVL in USD of the vaults to be included - schema: type: array items: type: string minLength: 1 in: query name: tags required: false description: Tags to be included. - schema: type: array items: type: string minLength: 1 in: query name: curators required: false description: Curators to be included. - schema: type: number minimum: 0 default: 1 in: query name: minUsdAssetValueThreshold required: false description: Minimum USD value of the vault to be included - schema: type: string pattern: ^0x[a-fA-F0-9]{40}$ in: path name: userAddress required: true description: User address to be used for best vault calculation responses: '200': description: Default Response content: application/json: schema: type: object properties: requestedAddress: type: string pattern: ^0x[a-fA-F0-9]{40}$ description: Address of the user requesting the data asset: type: object properties: address: type: string pattern: ^0x[a-fA-F0-9]{40}$ description: Address of the asset assetCaip: type: string pattern: ^eip155:\d+\/(erc20:0x[0-9a-fA-F]{40}|slip44:\d+)$ description: CAIP-2 of the asset name: type: string description: Name of the asset symbol: type: string description: Symbol of the asset decimals: type: integer description: Number of decimals of the asset assetLogo: type: string format: uri description: URL of the asset logo assetPriceInUsd: type: string description: Price of the asset in USD assetGroup: type: string description: Group of the asset, e.g., ETH, USD, EURO, BTC, OTHER balanceNative: type: string description: Balance of the asset balanceUsd: type: string description: USD value of the asset required: - address - assetCaip - name - symbol - decimals - assetGroup - balanceNative additionalProperties: false description: Requested asset details vault: type: object properties: name: type: string description: Name of the vault vaultId: type: string description: Stable vault identity for API lookups and links address: type: string pattern: ^0x[a-fA-F0-9]{40}$ description: Address of the vault network: type: object properties: name: type: string enum: - mainnet - optimism - arbitrum - polygon - gnosis - base - unichain - swellchain - celo - worldchain - berachain - ink - bsc - hyperliquid - plasma - avalanche - katana - linea - mega-eth - monad - etherlink description: Name of the network chainId: type: integer description: Chain ID of the network networkCaip: type: string pattern: ^eip155:\d+$ description: CAIP-2 of the network required: - name - chainId - networkCaip additionalProperties: false description: Network details of the vault isTransactional: type: boolean description: >- Indicates if the vault supports transactional endpoints isAppFeatured: type: boolean description: Indicates if the vault is featured in app.vaults.fyi protocol: type: object properties: name: type: string description: Name of the protocol product: type: string description: Product of the protocol version: type: string description: Version of the protocol protocolUrl: type: string description: URL of the protocol description: type: string description: Description of the protocol protocolLogo: type: string description: URL of the protocol logo required: - name additionalProperties: false description: Protocol details of the vault tvl: type: object properties: usd: type: string description: TVL in USD native: type: string description: Native TVL required: - usd - native additionalProperties: false description: Total Value Locked (TVL) in the vault tags: type: array items: type: string description: Tags associated with the vault apy: type: object properties: base: type: number description: Base APY reward: type: number description: Reward APY total: type: number description: Total APY required: - base - reward - total additionalProperties: false description: Annual Percentage Yield (APY) breakdown projectedUsdAnnualEarnings: type: string description: Projected annual earnings in USD lendUrl: type: string description: URL to lend the asset in the vault protocolVaultUrl: type: string description: URL to the vault in the protocol required: - name - vaultId - address - network - isTransactional - isAppFeatured - protocol - tvl - apy - projectedUsdAnnualEarnings additionalProperties: false description: Best vault details for the requested asset errors: type: object properties: unsupportedNetworks: type: array items: type: string unsupportedAssets: type: array items: type: string unsupportedProtocols: type: array items: type: string required: - unsupportedNetworks - unsupportedAssets - unsupportedProtocols additionalProperties: false required: - requestedAddress additionalProperties: false '400': description: Default Response content: application/json: schema: anyOf: - type: object properties: statusCode: type: number error: type: string enum: - Bad Request message: type: string errorId: type: string required: - statusCode - error - message additionalProperties: false - {} '401': description: Default Response content: application/json: schema: anyOf: - type: object properties: error: type: string enum: - Unauthorized message: type: string enum: - >- An API key is required to access this service. Sign up at https://portal.vaults.fyi/signup to generate a key. We offer a Pay-As-You-Go plan so you only pay for what you use, with no commitments. errorId: type: string required: - error - message additionalProperties: false - {} '402': description: Default Response content: application/json: schema: anyOf: - type: object properties: x402Version: anyOf: - type: number - type: string error: type: string resource: type: object properties: url: type: string description: type: string mimeType: type: string serviceName: type: string tags: type: array items: type: string iconUrl: type: string required: - url additionalProperties: false accepts: anyOf: - type: array items: type: object properties: scheme: type: string enum: - exact network: type: string amount: type: string payTo: type: string maxTimeoutSeconds: type: number asset: type: string extra: type: object properties: name: type: string version: type: string required: - name - version additionalProperties: false required: - scheme - network - amount - payTo - maxTimeoutSeconds - asset additionalProperties: false - {} extensions: type: object additionalProperties: {} required: - x402Version - resource additionalProperties: false - {} '403': description: Default Response content: application/json: schema: anyOf: - type: object properties: error: type: string enum: - Forbidden message: type: string enum: - >- This API key has exhausted its available credits. To resume service, please visit https://portal.vaults.fyi/signup to top-up your credits errorId: type: string required: - error - message additionalProperties: false - {} '404': description: Default Response content: application/json: schema: type: object properties: error: type: string enum: - Not Found message: type: string required: - error - message additionalProperties: false '408': description: Default Response content: application/json: schema: anyOf: - type: object properties: message: type: string errorId: type: string additionalProperties: false - {} '422': description: Default Response content: application/json: schema: anyOf: - type: object properties: statusCode: type: number error: type: string enum: - Unprocessable Entity message: type: string errorId: type: string required: - statusCode - error - message additionalProperties: false - {} '500': description: Default Response content: application/json: schema: anyOf: - type: object properties: error: type: string enum: - Internal Server Error message: type: string errorId: type: string required: - error - message additionalProperties: false - {} '503': description: Default Response content: application/json: schema: anyOf: - type: object properties: statusCode: type: number error: type: string enum: - Service Unavailable message: type: string errorId: type: string required: - statusCode - error - message additionalProperties: false - {} security: - apiKey: [] components: securitySchemes: apiKey: type: apiKey name: x-api-key in: header ````