> ## Documentation Index > Fetch the complete documentation index at: https://docs.sequence.xyz/llms.txt > Use this file to discover all available pages before exploring further. # FeeOptions ## OpenAPI ````yaml relayer-api.json post /rpc/Relayer/FeeOptions openapi: 3.0.0 info: title: Relayer Api version: 0.0.1 servers: - url: https://amoy-relayer.sequence.app description: Amoy Relayer - url: https://apechain-relayer.sequence.app description: Apechain Relayer - url: https://apechain-testnet-relayer.sequence.app description: Apechain-Testnet Relayer - url: https://arbitrum-relayer.sequence.app description: Arbitrum Relayer - url: https://arbitrum-nova-relayer.sequence.app description: Arbitrum-Nova Relayer - url: https://arbitrum-sepolia-relayer.sequence.app description: Arbitrum-Sepolia Relayer - url: https://avalanche-relayer.sequence.app description: Avalanche Relayer - url: https://avalanche-testnet-relayer.sequence.app description: Avalanche-Testnet Relayer - url: https://b3-relayer.sequence.app description: B3 Relayer - url: https://b3-sepolia-relayer.sequence.app description: B3-Sepolia Relayer - url: https://base-relayer.sequence.app description: Base Relayer - url: https://base-sepolia-relayer.sequence.app description: Base-Sepolia Relayer - url: https://blast-relayer.sequence.app description: Blast Relayer - url: https://blast-sepolia-relayer.sequence.app description: Blast-Sepolia Relayer - url: https://bsc-relayer.sequence.app description: Bsc Relayer - url: https://bsc-testnet-relayer.sequence.app description: Bsc-Testnet Relayer - url: https://gnosis-relayer.sequence.app description: Gnosis Relayer - url: https://homeverse-relayer.sequence.app description: Homeverse Relayer - url: https://homeverse-testnet-relayer.sequence.app description: Homeverse-Testnet Relayer - url: https://immutable-zkevm-relayer.sequence.app description: Immutable-Zkevm Relayer - url: https://immutable-zkevm-testnet-relayer.sequence.app description: Immutable-Zkevm-Testnet Relayer - url: https://laos-relayer.sequence.app description: Laos Relayer - url: https://laos-sigma-testnet-relayer.sequence.app description: Laos-Sigma-Testnet Relayer - url: https://mainnet-relayer.sequence.app description: Mainnet Relayer - url: https://optimism-relayer.sequence.app description: Optimism Relayer - url: https://optimism-sepolia-relayer.sequence.app description: Optimism-Sepolia Relayer - url: https://polygon-relayer.sequence.app description: Polygon Relayer - url: https://polygon-zkevm-relayer.sequence.app description: Polygon-Zkevm Relayer - url: https://rootnet-relayer.sequence.app description: Rootnet Relayer - url: https://rootnet-porcini-relayer.sequence.app description: Rootnet-Porcini Relayer - url: https://sepolia-relayer.sequence.app description: Sepolia Relayer - url: https://skale-nebula-relayer.sequence.app description: Skale-Nebula Relayer - url: https://skale-nebula-testnet-relayer.sequence.app description: Skale-Nebula-Testnet Relayer - url: https://soneium-minato-relayer.sequence.app description: Soneium-Minato Relayer - url: https://soneium-relayer.sequence.app description: Soneium Relayer - url: https://toy-testnet-relayer.sequence.app description: Toy-Testnet Relayer - url: https://xai-relayer.sequence.app description: Xai Relayer - url: https://xai-sepolia-relayer.sequence.app description: Xai-Sepolia Relayer - url: https://xr-sepolia-relayer.sequence.app description: Xr-Sepolia Relayer security: [] paths: /rpc/Relayer/FeeOptions: post: summary: FeeOptions requestBody: content: application/json: schema: $ref: '#/components/schemas/Relayer_FeeOptions_Request' responses: '200': description: OK content: application/json: schema: $ref: '#/components/schemas/Relayer_FeeOptions_Response' 4XX: description: Client error content: application/json: schema: oneOf: - $ref: '#/components/schemas/ErrorWebrpcEndpoint' - $ref: '#/components/schemas/ErrorWebrpcRequestFailed' - $ref: '#/components/schemas/ErrorWebrpcBadRoute' - $ref: '#/components/schemas/ErrorWebrpcBadMethod' - $ref: '#/components/schemas/ErrorWebrpcBadRequest' - $ref: '#/components/schemas/ErrorWebrpcClientDisconnected' - $ref: '#/components/schemas/ErrorWebrpcStreamLost' - $ref: '#/components/schemas/ErrorUnauthorized' - $ref: '#/components/schemas/ErrorPermissionDenied' - $ref: '#/components/schemas/ErrorMethodNotFound' - $ref: '#/components/schemas/ErrorRequestConflict' - $ref: '#/components/schemas/ErrorAborted' - $ref: '#/components/schemas/ErrorGeoblocked' - $ref: '#/components/schemas/ErrorInvalidArgument' - $ref: '#/components/schemas/ErrorUnavailable' - $ref: '#/components/schemas/ErrorQueryFailed' - $ref: '#/components/schemas/ErrorNotFound' - $ref: '#/components/schemas/ErrorInsufficientFee' 5XX: description: Server error content: application/json: schema: oneOf: - $ref: '#/components/schemas/ErrorWebrpcBadResponse' - $ref: '#/components/schemas/ErrorWebrpcServerPanic' - $ref: '#/components/schemas/ErrorWebrpcInternalError' security: - ApiKeyAuth: - AQAAAAAAAEGvyZiWA9FMslYeG_yayXaHnSI components: schemas: Relayer_FeeOptions_Request: type: object properties: wallet: type: string to: type: string data: type: string simulate: type: boolean Relayer_FeeOptions_Response: type: object properties: options: type: array description: '[]FeeOption' items: $ref: '#/components/schemas/FeeOption' sponsored: type: boolean quote: type: string ErrorWebrpcEndpoint: type: object required: - error - code - msg - status properties: error: type: string example: WebrpcEndpoint code: type: number example: 0 msg: type: string example: endpoint error cause: type: string status: type: number example: 400 ErrorWebrpcRequestFailed: type: object required: - error - code - msg - status properties: error: type: string example: WebrpcRequestFailed code: type: number example: -1 msg: type: string example: request failed cause: type: string status: type: number example: 400 ErrorWebrpcBadRoute: type: object required: - error - code - msg - status properties: error: type: string example: WebrpcBadRoute code: type: number example: -2 msg: type: string example: bad route cause: type: string status: type: number example: 404 ErrorWebrpcBadMethod: type: object required: - error - code - msg - status properties: error: type: string example: WebrpcBadMethod code: type: number example: -3 msg: type: string example: bad method cause: type: string status: type: number example: 405 ErrorWebrpcBadRequest: type: object required: - error - code - msg - status properties: error: type: string example: WebrpcBadRequest code: type: number example: -4 msg: type: string example: bad request cause: type: string status: type: number example: 400 ErrorWebrpcClientDisconnected: type: object required: - error - code - msg - status properties: error: type: string example: WebrpcClientDisconnected code: type: number example: -8 msg: type: string example: client disconnected cause: type: string status: type: number example: 400 ErrorWebrpcStreamLost: type: object required: - error - code - msg - status properties: error: type: string example: WebrpcStreamLost code: type: number example: -9 msg: type: string example: stream lost cause: type: string status: type: number example: 400 ErrorUnauthorized: type: object required: - error - code - msg - status properties: error: type: string example: Unauthorized code: type: number example: 1000 msg: type: string example: Unauthorized access cause: type: string status: type: number example: 401 ErrorPermissionDenied: type: object required: - error - code - msg - status properties: error: type: string example: PermissionDenied code: type: number example: 1001 msg: type: string example: Permission denied cause: type: string status: type: number example: 403 ErrorMethodNotFound: type: object required: - error - code - msg - status properties: error: type: string example: MethodNotFound code: type: number example: 1003 msg: type: string example: Method not found cause: type: string status: type: number example: 404 ErrorRequestConflict: type: object required: - error - code - msg - status properties: error: type: string example: RequestConflict code: type: number example: 1004 msg: type: string example: Conflict with target resource cause: type: string status: type: number example: 409 ErrorAborted: type: object required: - error - code - msg - status properties: error: type: string example: Aborted code: type: number example: 1005 msg: type: string example: Request aborted cause: type: string status: type: number example: 400 ErrorGeoblocked: type: object required: - error - code - msg - status properties: error: type: string example: Geoblocked code: type: number example: 1006 msg: type: string example: Geoblocked region cause: type: string status: type: number example: 451 ErrorInvalidArgument: type: object required: - error - code - msg - status properties: error: type: string example: InvalidArgument code: type: number example: 2001 msg: type: string example: Invalid argument cause: type: string status: type: number example: 400 ErrorUnavailable: type: object required: - error - code - msg - status properties: error: type: string example: Unavailable code: type: number example: 2002 msg: type: string example: Unavailable resource cause: type: string status: type: number example: 400 ErrorQueryFailed: type: object required: - error - code - msg - status properties: error: type: string example: QueryFailed code: type: number example: 2003 msg: type: string example: Query failed cause: type: string status: type: number example: 400 ErrorNotFound: type: object required: - error - code - msg - status properties: error: type: string example: NotFound code: type: number example: 3000 msg: type: string example: Resource not found cause: type: string status: type: number example: 400 ErrorInsufficientFee: type: object required: - error - code - msg - status properties: error: type: string example: InsufficientFee code: type: number example: 3004 msg: type: string example: Insufficient fee cause: type: string status: type: number example: 402 ErrorWebrpcBadResponse: type: object required: - error - code - msg - status properties: error: type: string example: WebrpcBadResponse code: type: number example: -5 msg: type: string example: bad response cause: type: string status: type: number example: 500 ErrorWebrpcServerPanic: type: object required: - error - code - msg - status properties: error: type: string example: WebrpcServerPanic code: type: number example: -6 msg: type: string example: server panic cause: type: string status: type: number example: 500 ErrorWebrpcInternalError: type: object required: - error - code - msg - status properties: error: type: string example: WebrpcInternalError code: type: number example: -7 msg: type: string example: internal error cause: type: string status: type: number example: 500 FeeOption: type: object required: - token - to - value - gasLimit properties: token: $ref: '#/components/schemas/FeeToken' to: type: string value: type: string gasLimit: type: number FeeToken: type: object required: - chainId - name - symbol - type - logoURL properties: chainId: type: number name: type: string symbol: type: string type: $ref: '#/components/schemas/FeeTokenType' decimals: type: number logoURL: type: string contractAddress: type: string tokenID: type: string FeeTokenType: type: string description: Represented as uint32 on the server side enum: - UNKNOWN - ERC20_TOKEN - ERC1155_TOKEN securitySchemes: ApiKeyAuth: type: apiKey in: header description: >- Public project access key for authenticating requests obtained on Sequence Builder. Example Test Key: AQAAAAAAAEGvyZiWA9FMslYeG_yayXaHnSI name: X-Access-Key ````