> ## 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 policies childrenprepare ## OpenAPI ````yaml /openapi/platform.json post /v1/projects/{projectId}/gas-policies/{gasPolicyId}/children/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: 0.5.0 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/{gasPolicyId}/children/prepare: post: tags: - gas-policies operationId: prepareChildMandate parameters: - schema: format: uuid type: string in: path name: projectId required: true - schema: pattern: ^0x[0-9a-fA-F]{64}$ type: string in: path name: gasPolicyId required: true requestBody: required: true content: application/json: schema: additionalProperties: false type: object required: - agent - transfer - mandate properties: parentMandateId: pattern: ^0x[0-9a-fA-F]{64}$ type: string 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 tree: additionalProperties: false type: object required: - maxDepth - maxActiveDescendants properties: maxDepth: minimum: 0 maximum: 2 type: integer maxActiveDescendants: minimum: 0 maximum: 16 type: integer responses: '200': description: Default Response content: application/json: schema: type: object required: - draftId - draftExpiresAt - gasPolicyId - rootMandateId - parentMandateId - parentAgent - review - authority - signing - submission - observedBlockNumber properties: draftId: format: uuid type: string draftExpiresAt: format: date-time type: string gasPolicyId: pattern: ^0x[0-9a-fA-F]{64}$ type: string rootMandateId: pattern: ^0x[0-9a-fA-F]{64}$ type: string parentMandateId: pattern: ^0x[0-9a-fA-F]{64}$ type: string parentAgent: pattern: ^0x[0-9a-fA-F]{40}$ type: string review: additionalProperties: false type: object required: - agent - recipients - maxPerActionBaseUnits - maxTotalBaseUnits - validFrom - expiresAt - depth - maxDepth - maxActiveDescendants properties: agent: pattern: ^0x[0-9a-fA-F]{40}$ type: string recipients: 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 validFrom: minimum: 0 type: integer expiresAt: minimum: 0 type: integer depth: minimum: 0 type: integer maxDepth: minimum: 0 type: integer maxActiveDescendants: minimum: 0 type: integer authority: additionalProperties: false type: object required: - mandateTerms - mandatePolicy - mandateId properties: mandateTerms: additionalProperties: false type: object required: - parentId - account - agent - accountProfileId - installEpoch - projectId - mode - policyVersion - policyHash - validFrom - expiresAt - maxDepth - maxActiveDescendants - approvalExpiresAt - salt properties: parentId: pattern: ^0x[0-9a-fA-F]{64}$ type: string account: pattern: ^0x[0-9a-fA-F]{40}$ type: string agent: pattern: ^0x[0-9a-fA-F]{40}$ type: string accountProfileId: pattern: ^0x[0-9a-fA-F]{64}$ type: string installEpoch: pattern: ^(0|[1-9][0-9]{0,77})$ type: string projectId: pattern: ^0x[0-9a-fA-F]{64}$ type: string mode: minimum: 0 type: integer policyVersion: minimum: 0 type: integer policyHash: pattern: ^0x[0-9a-fA-F]{64}$ type: string validFrom: minimum: 0 type: integer expiresAt: minimum: 0 type: integer maxDepth: minimum: 0 type: integer maxActiveDescendants: minimum: 0 type: integer approvalExpiresAt: minimum: 0 type: integer salt: pattern: ^0x[0-9a-fA-F]{64}$ type: string mandatePolicy: pattern: ^0x([0-9a-f]{2})+$ type: string mandateId: pattern: ^0x[0-9a-fA-F]{64}$ type: string signing: type: object required: - signer - method - typedData - expectedHash properties: signer: pattern: ^0x[0-9a-fA-F]{40}$ type: string 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 submission: type: object required: - to - functionName properties: to: pattern: ^0x[0-9a-fA-F]{40}$ type: string functionName: type: string enum: - createChildMandate observedBlockNumber: pattern: ^(0|[1-9][0-9]{0,77})$ 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 ````