> ## Documentation Index > Fetch the complete documentation index at: https://docs.gol.network/llms.txt > Use this file to discover all available pages before exploring further. # Post v1projects gas policiesprepare ## OpenAPI ````yaml /openapi/platform.json post /v1/projects/{projectId}/gas-policies/prepare openapi: 3.1.0 info: title: GOL Platform API description: >- Public API for GOL developer projects, credentials, owner gas policies, hosted gas executions, and webhooks. version: 0.2.0 servers: - url: http://localhost:4100 description: Local development security: [] tags: - name: system - name: authentication - name: projects - name: api-keys - name: audit - name: gas-executions - name: gas-policies - name: webhooks paths: /v1/projects/{projectId}/gas-policies/prepare: post: tags: - gas-policies operationId: prepareGasPolicy parameters: - schema: format: uuid type: string in: path name: projectId required: true requestBody: required: true content: application/json: schema: additionalProperties: false type: object required: - account - family - agent - transfer - mandate - gas properties: account: pattern: ^0x[0-9a-fA-F]{40}$ type: string family: anyOf: - type: string enum: - safe - type: string enum: - nexus - type: string enum: - kernel - type: string enum: - alchemy agent: pattern: ^0x[0-9a-fA-F]{40}$ type: string transfer: additionalProperties: false type: object required: - recipients - maxPerActionBaseUnits - maxTotalBaseUnits properties: recipients: minItems: 1 maxItems: 16 type: array items: pattern: ^0x[0-9a-fA-F]{40}$ type: string maxPerActionBaseUnits: pattern: ^(0|[1-9][0-9]{0,77})$ type: string maxTotalBaseUnits: pattern: ^(0|[1-9][0-9]{0,77})$ type: string mandate: additionalProperties: false type: object required: - validFrom - expiresAt - approvalExpiresAt properties: validFrom: minimum: 1 maximum: 281474976710655 type: integer expiresAt: minimum: 1 maximum: 281474976710655 type: integer approvalExpiresAt: minimum: 1 maximum: 281474976710655 type: integer salt: pattern: ^0x[0-9a-fA-F]{64}$ type: string gas: additionalProperties: false type: object required: - maxPerActionWei - maxTotalWei - expiresAt - chargeableOutcomesMask properties: maxPerActionWei: pattern: ^(0|[1-9][0-9]{0,77})$ type: string maxTotalWei: pattern: ^(0|[1-9][0-9]{0,77})$ type: string expiresAt: minimum: 1 maximum: 281474976710655 type: integer chargeableOutcomesMask: minimum: 1 maximum: 7 type: integer responses: '200': description: Default Response content: application/json: schema: additionalProperties: false type: object required: - draftId - draftExpiresAt - environment - chainId - core - account - family - review - authority - signing - submission properties: draftId: format: uuid type: string draftExpiresAt: format: date-time type: string environment: type: string enum: - test chainId: type: number enum: - 84532 core: pattern: ^0x[0-9a-fA-F]{40}$ type: string account: pattern: ^0x[0-9a-fA-F]{40}$ type: string family: anyOf: - type: string enum: - safe - type: string enum: - nexus - type: string enum: - kernel - type: string enum: - alchemy review: type: object additionalProperties: {} authority: additionalProperties: false type: object required: - mandateTerms - mandatePolicy - gasPolicy - mandateId - gasPolicyId - combinedDigest properties: mandateTerms: type: object additionalProperties: {} mandatePolicy: pattern: ^0x([0-9a-f]{2})+$ type: string gasPolicy: type: object additionalProperties: {} mandateId: pattern: ^0x[0-9a-fA-F]{64}$ type: string gasPolicyId: pattern: ^0x[0-9a-fA-F]{64}$ type: string combinedDigest: pattern: ^0x[0-9a-fA-F]{64}$ type: string signing: $ref: '#/components/schemas/def-5' submission: additionalProperties: false type: object required: - to - functionName properties: to: pattern: ^0x[0-9a-fA-F]{40}$ type: string functionName: type: string enum: - createMandateWithGas '400': description: Default Response content: application/json: schema: additionalProperties: false type: object required: - error properties: error: additionalProperties: false type: object required: - code - message - correlationId properties: code: type: string message: type: string correlationId: format: uuid type: string '401': description: Default Response content: application/json: schema: additionalProperties: false type: object required: - error properties: error: additionalProperties: false type: object required: - code - message - correlationId properties: code: type: string message: type: string correlationId: format: uuid type: string '403': description: Default Response content: application/json: schema: additionalProperties: false type: object required: - error properties: error: additionalProperties: false type: object required: - code - message - correlationId properties: code: type: string message: type: string correlationId: format: uuid type: string '404': description: Default Response content: application/json: schema: additionalProperties: false type: object required: - error properties: error: additionalProperties: false type: object required: - code - message - correlationId properties: code: type: string message: type: string correlationId: format: uuid type: string '409': description: Default Response content: application/json: schema: additionalProperties: false type: object required: - error properties: error: additionalProperties: false type: object required: - code - message - correlationId properties: code: type: string message: type: string correlationId: format: uuid type: string '429': description: Default Response content: application/json: schema: additionalProperties: false type: object required: - error properties: error: additionalProperties: false type: object required: - code - message - correlationId properties: code: type: string message: type: string correlationId: format: uuid type: string '500': description: Default Response content: application/json: schema: additionalProperties: false type: object required: - error properties: error: additionalProperties: false type: object required: - code - message - correlationId properties: code: type: string message: type: string correlationId: format: uuid type: string '503': description: Default Response content: application/json: schema: additionalProperties: false type: object required: - error properties: error: additionalProperties: false type: object required: - code - message - correlationId properties: code: type: string message: type: string correlationId: format: uuid type: string security: - bearerAuth: [] components: schemas: def-5: additionalProperties: false type: object required: - family - method - typedData - expectedHash - digest - signatureFormat properties: family: anyOf: - type: string enum: - safe - type: string enum: - nexus - type: string enum: - kernel - type: string enum: - alchemy method: type: string enum: - eth_signTypedData_v4 typedData: additionalProperties: false type: object required: - domain - types - primaryType - message properties: domain: type: object additionalProperties: {} types: type: object additionalProperties: type: array items: type: object required: - name - type properties: name: type: string type: type: string primaryType: type: string message: type: object additionalProperties: {} expectedHash: pattern: ^0x[0-9a-fA-F]{64}$ type: string digest: pattern: ^0x[0-9a-fA-F]{64}$ type: string signatureFormat: anyOf: - type: string enum: - safe_threshold - type: string enum: - nexus_k1 - type: string enum: - kernel_root - type: string enum: - alchemy_entity_zero title: WalletSigningPayload securitySchemes: bearerAuth: type: http scheme: bearer ````