> ## Documentation Index > Fetch the complete documentation index at: https://developers.squads.so/llms.txt > Use this file to discover all available pages before exploring further. # Post apigridv1accounts submit ## OpenAPI ````yaml https://grid.squads.xyz/api-docs/openapi.json post /api/grid/v1/accounts/{address}/submit openapi: 3.1.0 info: title: Grid v1 API description: Grid v1 REST API for Solana-based smart account system contact: name: Grid API Support url: https://squads.so email: support@squads.so license: name: MIT version: 1.0.0 servers: - url: https://grid.squads.xyz description: Production server security: - bearer_auth: [] tags: - name: accounts description: Smart account management operations - name: spending-limits description: Spending limit management - name: standing-orders description: Standing order operations - name: transactions description: Transaction management - name: trade description: Trade operations and management - name: payments description: Payment intent operations - name: passkeys description: Passkey management - name: kyc description: Know Your Customer operations - name: external-accounts description: External bank account management - name: virtual-accounts description: Virtual account management - name: auth description: Authentication operations - name: proposals description: Proposal management for multi-sig operations - name: compliance description: Compliance entity management and KYB/KYC operations paths: /api/grid/v1/accounts/{address}/submit: post: tags: - transactions operationId: handler parameters: - name: address in: path description: Smart account address (Solana public key) required: true schema: type: string - name: x-grid-environment in: header description: Solana network environment (sandbox, devnet, mainnet) required: true schema: type: string example: sandbox requestBody: content: application/json: schema: $ref: '#/components/schemas/SubmitTransactionRequestPayload' required: true responses: '200': description: Transaction submitted successfully content: application/json: schema: $ref: >- #/components/schemas/GridApiResponse_SubmitTransactionResponsePayload '400': description: Invalid transaction or signatures '403': description: Forbidden - insufficient permissions '404': description: Smart account not found '500': description: Internal server error security: - bearer_auth: [] components: schemas: SubmitTransactionRequestPayload: oneOf: - type: object description: Multiple transactions format required: - transactions - kms_payloads properties: kms_payloads: type: array items: type: array items: $ref: '#/components/schemas/SubmitTransactionKmsPayload' description: Signed KMS payloads, one inner array per transaction transactions: type: array items: type: string description: Base64-encoded serialized Solana transactions - type: object description: Single transaction format (legacy, backward compatible) required: - transaction properties: kms_payloads: type: array items: $ref: '#/components/schemas/SubmitTransactionKmsPayload' description: Signed KMS payloads for this transaction transaction: type: string description: Base64-encoded serialized Solana transaction description: Request payload — supports single or multiple transaction submission GridApiResponse_SubmitTransactionResponsePayload: type: object required: - data - metadata properties: data: oneOf: - $ref: '#/components/schemas/MultipleTransactionsResponse' description: Multiple transactions response (new format) - $ref: '#/components/schemas/SingleTransactionResponse' description: >- Single transaction response (legacy format for backward compatibility) description: >- Response payload - supports both legacy single-transaction and new multi-transaction formats metadata: $ref: '#/components/schemas/Metadata' SubmitTransactionKmsPayload: type: object description: Signed payload from a key management provider required: - provider properties: kms_signed_payload: oneOf: - type: 'null' - $ref: '#/components/schemas/KmsSignedPayload' description: >- Provider-specific signed payload. Required for Turnkey. Recommended for Privy. provider: $ref: '#/components/schemas/GridMPCProvider' description: 'Key management provider: "privy" or "turnkey"' signature: type: - string - 'null' description: >- Legacy signature field (Privy only, backward-compatible). Prefer kms_signed_payload instead. MultipleTransactionsResponse: type: object description: New response format for multiple transaction submissions required: - results properties: partial_failure: oneOf: - type: 'null' - $ref: '#/components/schemas/PartialFailureInfo' results: type: array items: $ref: '#/components/schemas/TransactionResult' SingleTransactionResponse: type: object description: Legacy response format for single transaction submissions required: - transaction_signature - confirmed_at properties: confirmed_at: type: string format: date-time transaction_signature: type: string Metadata: type: object required: - request_id - timestamp properties: request_id: type: string timestamp: type: string format: date-time KmsSignedPayload: oneOf: - $ref: '#/components/schemas/TurnkeyKmsPayload' description: Turnkey signed payload - $ref: '#/components/schemas/PrivyKmsPayload' description: Privy signed payload description: Provider-specific signed payload GridMPCProvider: type: string enum: - privy - dynamic - passkey - turnkey - external PartialFailureInfo: type: object required: - failed_at_index - error_message - error_code properties: error_code: type: string error_message: type: string failed_at_index: type: integer minimum: 0 TransactionResult: type: object required: - transaction_signature - confirmed_at - index properties: confirmed_at: type: string format: date-time index: type: integer minimum: 0 transaction_signature: type: string TurnkeyKmsPayload: type: object description: Turnkey KMS signed payload required: - public_key - signature - timestamp_ms properties: public_key: type: string description: Hex-encoded P-256 public key used for signing signature: type: string description: Hex-encoded ECDSA P-256 signature timestamp_ms: type: string description: Unix timestamp in milliseconds when the signature was created additionalProperties: false PrivyKmsPayload: type: object description: Privy KMS signed payload required: - signature properties: signature: type: string description: >- Base64-encoded DER ECDSA P-256 SHA-256 signature of the canonicalized KMS payload additionalProperties: false securitySchemes: bearer_auth: type: http scheme: bearer description: Your Grid API key from the Grid Dashboard ````