> ## 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 executionsprepare ## OpenAPI ````yaml /openapi/platform.json post /v1/projects/{projectId}/gas-executions/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-executions/prepare: post: tags: - gas-executions operationId: prepareGasExecution parameters: - schema: format: uuid type: string in: path name: projectId required: true - schema: pattern: ^0x[0-9a-fA-F]{64}$ type: string in: header name: idempotency-key required: true requestBody: required: true content: application/json: schema: additionalProperties: false type: object required: - mandateId - gasPolicyId - recipient - amountBaseUnits - deadline properties: mandateId: pattern: ^0x[0-9a-fA-F]{64}$ type: string gasPolicyId: pattern: ^0x[0-9a-fA-F]{64}$ type: string recipient: pattern: ^0x[0-9a-fA-F]{40}$ type: string amountBaseUnits: pattern: ^[1-9][0-9]{0,77}$ type: string deadline: minimum: 1 maximum: 281474976710655 type: integer responses: '200': description: Default Response content: application/json: schema: additionalProperties: false type: object required: - actionId - chainId - core - asset - recipient - amountBaseUnits - digest - typedData properties: actionId: pattern: ^0x[0-9a-fA-F]{64}$ type: string chainId: type: number enum: - 84532 core: pattern: ^0x[0-9a-fA-F]{40}$ type: string asset: pattern: ^0x[0-9a-fA-F]{40}$ type: string recipient: pattern: ^0x[0-9a-fA-F]{40}$ type: string amountBaseUnits: type: string digest: pattern: ^0x[0-9a-fA-F]{64}$ type: string typedData: additionalProperties: false type: object required: - domain - types - primaryType - message properties: domain: type: object required: - name - version - chainId - verifyingContract properties: name: type: string enum: - GOL Mandate version: type: string enum: - '2' chainId: type: number enum: - 84532 verifyingContract: pattern: ^0x[0-9a-fA-F]{40}$ type: string types: type: object required: - ActionAuthorization properties: ActionAuthorization: type: array items: type: object required: - name - type properties: name: type: string type: type: string primaryType: type: string enum: - ActionAuthorization message: type: object required: - mandateId - actionTag - schemaVersion - actionId - capabilityDigest - deadline - inputHash properties: mandateId: pattern: ^0x[0-9a-fA-F]{64}$ type: string actionTag: type: number enum: - 1 schemaVersion: type: number enum: - 1 actionId: pattern: ^0x[0-9a-fA-F]{64}$ type: string capabilityDigest: pattern: ^0x[0-9a-fA-F]{64}$ type: string deadline: type: integer inputHash: pattern: ^0x[0-9a-fA-F]{64}$ type: string '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: securitySchemes: bearerAuth: type: http scheme: bearer ````