> ## Documentation Index > Fetch the complete documentation index at: https://docs.polygon.technology/llms.txt > Use this file to discover all available pages before exploring further. # Get transaction by ID > Retrieves a single transaction by ID. Optionally pass senderCustomerId or recipientCustomerId to set which customer perspective the role field reflects. ## OpenAPI ````yaml /api-reference/openapi.yaml get /transactions/{transactionId} openapi: 3.0.3 info: title: Polygon OMS Public API version: v26.05.28-0001 description: >- Unified API for moving money between crypto and fiat. Three ways to move money: Transactions (instant, wallet or card funded, including Cash-In for in-person cash deposits), Deposit Addresses (reusable crypto deposit configurations), and Virtual Accounts (dedicated bank accounts that auto-convert fiat to crypto). Standard transactions follow a two-step flow: create a Quote (pricing), then create a Transaction (execution). Cash-in codes generate a one-time deposit code for in-person cash deposits at retail locations. contact: name: Polygon OMS url: https://oms.polygon.technology servers: - url: https://sandbox-api.polygon.technology/v0.9 description: Sandbox - url: https://api.polygon.technology/v0.9 description: Production security: - BearerAuth: [] tags: - name: Auth description: Authentication via FrontEgg - name: Customers description: Customer management and KYC - name: Customer - name: Wallet - name: Quote - name: Transaction - name: Webhook - name: CashIns - name: CashLocation - name: Sandbox - name: Simulation paths: /transactions/{transactionId}: get: tags: - Transaction summary: Get transaction by ID description: >- Retrieves a single transaction by ID. Optionally pass senderCustomerId or recipientCustomerId to set which customer perspective the role field reflects. operationId: getTransaction parameters: - in: path name: transactionId required: true schema: type: string - description: >- Sender-side customer context used with `recipientCustomerId` to choose the single customer perspective for `role`. in: query name: senderCustomerId required: false schema: type: string - description: >- Recipient-side customer context used with `senderCustomerId` to choose the single customer perspective for `role`. in: query name: recipientCustomerId required: false schema: type: string responses: '200': content: application/json: schema: $ref: '#/components/schemas/Transaction' description: The request has succeeded. components: schemas: Transaction: description: >- A single movement of money from a source to a destination. Created by accepting a quote, or generated automatically by a deposit address, virtual account, or cash-in. Track its progress with status. properties: cashInId: type: string cashPickup: $ref: '#/components/schemas/CashPickup' completedAt: description: >- When the transaction reached a terminal completed state. Absent until completion; distinct from updatedAt. format: date-time type: string createdAt: type: string format: date-time depositAddressId: type: string depositInstructions: $ref: '#/components/schemas/TransactionDepositInstructions' destination: $ref: '#/components/schemas/TransactionDestination' error: $ref: '#/components/schemas/AsyncError' estimatedArrival: type: string format: date-time expiresAt: type: string format: date-time fixedAmountSide: enum: - source - destination type: string id: type: string metadata: type: object additionalProperties: type: string object: enum: - transaction type: string quoteId: type: string rail: description: >- Payment rail for this leg: e.g. "wire", "international_wire", "ach", "crypto". Lets clients label the rail without re-deriving it from other fields. type: string rates: $ref: '#/components/schemas/Rates' recipientCustomerId: description: >- Recipient customer when resolvable: internal dest wallet's owner, or the sender for cash/fiat rails. Absent for external blockchain destinations. type: string role: allOf: - $ref: '#/components/schemas/CustomerRole' description: >- Present only when the request supplies customer context; see CustomerRole. senderCustomerId: description: Sender customer (the quote owner). OMSX customer TypeID (cst_…). type: string source: $ref: '#/components/schemas/TransactionSource' sponsorGas: type: boolean sponsorGasCost: description: |- USD cost of gas absorbed by the developer when sponsoring gas. Always "0" in alpha - gas is sponsored. Spec § 4.1. type: string status: $ref: '#/components/schemas/TransactionStatus' subStatus: type: string type: $ref: '#/components/schemas/TransferType' updatedAt: type: string format: date-time virtualAccountId: type: string type: object CashPickup: description: >- Details for collecting a cash payout: the pickup code, amount, and location. properties: amount: type: string asset: type: string cashCode: type: string expiresAt: type: string format: date-time instructions: type: string location: $ref: '#/components/schemas/CashPickupLocation' phoneRequired: type: boolean type: object TransactionDepositInstructions: description: >- On-chain instructions for funding a transaction: the address, asset, network, and exact amount to send. properties: address: type: string asset: type: string exactAmount: type: string expiresAt: type: string format: date-time network: type: string type: object TransactionDestination: description: >- The destination side of a transaction: where funds are delivered, with the amounts and fees on that side. properties: amountGross: type: string amountNet: type: string asset: type: string bankDetails: type: object additionalProperties: type: string cash: $ref: '#/components/schemas/TransactionDestinationCash' externalAccountId: type: string feesDeducted: $ref: '#/components/schemas/FeesDeducted' network: type: string owner: $ref: '#/components/schemas/Owner' txHash: type: string wallet: $ref: '#/components/schemas/WalletTarget' type: object AsyncError: description: >- Details of an asynchronous failure, such as a transaction or webhook that failed after the initial request succeeded. Present only once a failure has occurred. properties: code: type: string message: type: string occurredAt: type: string format: date-time recoverable: type: boolean refund: $ref: '#/components/schemas/Refund' type: object Rates: description: Exchange and effective rates. properties: effectiveRate: description: All-in rate inclusive of all fees on both sides. type: string exchangeRate: description: Units of destination asset per 1 unit of source asset. type: string pair: description: Asset pair string, e.g. "usdc/usd". type: string required: - pair - exchangeRate - effectiveRate type: object CustomerRole: description: >- Role of the perspective customer (the one named in the path or filter) relative to a transaction. Emitted on customer-scoped list responses (`GET /customers/{id}/transactions` or `GET /transactions?senderCustomerId=…` / `…?recipientCustomerId=…`) and single-transaction responses with `GET /transactions/{id}?senderCustomerId=…` or `GET /transactions/{id}?recipientCustomerId=…`; absent when there is no single reference customer. enum: - sender - recipient - both type: string TransactionSource: description: >- The source side of a transaction: where funds are pulled from, with the amounts and fees on that side. properties: amountGross: type: string amountNet: type: string asset: type: string externalAccountId: type: string feesDeducted: $ref: '#/components/schemas/FeesDeducted' network: type: string owner: $ref: '#/components/schemas/Owner' txHash: type: string walletId: type: string type: object TransactionStatus: description: >- Lifecycle of a transaction. processing: funds in motion. completed: delivered. failed: terminal failure. cashPickupReady: a cash pickup code is ready to collect. enum: - processing - completed - failed - cashPickupReady type: string TransferType: description: >- Direction of value across rails: cryptoToCrypto, fiatToCrypto, or cryptoToFiat. enum: - cryptoToCrypto - fiatToCrypto - cryptoToFiat type: string CashPickupLocation: properties: address: type: string city: type: string coordinates: $ref: '#/components/schemas/CashLocationCoordinates' country: type: string name: type: string provider: type: string state: type: string zipCode: type: string type: object TransactionDestinationCash: properties: locationId: type: string locationReference: type: string type: object FeesDeducted: description: |- Per-side breakdown of fees deducted in-line from the transaction. End-of-month billable fees will be reported separately in the future (planned `feesInvoice` sibling). Denominated in that side's asset. properties: developer: description: |- Per-side aggregated developer fee total in this side's asset. Always "0" in alpha - alpha invariant, mirrors the gas line. type: string gas: type: string oms: type: string total: type: string required: - total - developer - oms - gas type: object Owner: description: >- The legal owner of a payment endpoint, either an individual or a business, with contact and identifying details. properties: address: $ref: '#/components/schemas/Address' dateOfBirth: format: date type: string email: type: string name: description: Full legal name or registered business name. type: string nationality: description: ISO 3166-1 alpha-2 type: string phone: type: string taxId: description: Tax ID (CPF, CNPJ, etc.) type: string type: $ref: '#/components/schemas/OwnerType' type: object WalletTarget: description: Crypto delivery target. One or more identifiers may be present. properties: blockchainAddress: description: External on-chain address. type: string externalAccountId: description: Saved blockchain address (cpBcAddr_ prefix). type: string walletId: description: Internal OMS wallet (acc_ prefix). type: string type: object Refund: description: >- An automatic refund issued when a transaction fails after funds were pulled from the source. properties: amount: type: string asset: type: string destinationWalletId: type: string network: type: string status: $ref: '#/components/schemas/RefundStatus' txHash: type: string type: object CashLocationCoordinates: properties: latitude: format: double type: number longitude: format: double type: number required: - latitude - longitude type: object Address: description: A postal address. country is an ISO 3166-1 alpha-2 country code. properties: city: type: string country: description: ISO 3166-1 alpha-2 type: string line1: type: string line2: type: string state: type: string zipCode: type: string type: object OwnerType: enum: - individual - business type: string RefundStatus: enum: - pending - completed - failed type: string securitySchemes: BearerAuth: type: http scheme: bearer bearerFormat: JWT description: Token from POST /auth/token ````