Utila Transactions API
The Transactions API from Utila — 11 operation(s) for transactions.
The Transactions API from Utila — 11 operation(s) for transactions.
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openapi: 3.2.0
info:
title: Utila Address Book Transactions API
version: v2
servers:
- url: https://api.utila.io
security:
- bearerAuth: []
tags:
- name: Transactions
paths:
/v2/vaults/{vault_id}/transactions/{transaction_id}:
get:
summary: GetTransaction
description: Retrieves a transaction by resource name.
operationId: Transactions_GetTransaction
responses:
'200':
description: A successful response.
content:
application/json:
schema:
$ref: '#/components/schemas/v2GetTransactionResponse'
parameters:
- name: vault_id
in: path
required: true
schema:
type: string
- name: transaction_id
in: path
required: true
schema:
type: string
- name: includeReferencedResources
description: Include referenced resources in the response.
in: query
required: false
schema:
type: boolean
- name: view
description: "The view of the transaction.\n\n - BASIC: The default view. Does not include certain fields such as blocking transactions.\n - FULL: Full view, include all fields."
in: query
required: false
schema:
type: string
enum:
- BASIC
- FULL
tags:
- Transactions
/v2/vaults/{vault_id}/transactions:batchGet:
get:
summary: BatchGetTransactions
description: Retrieves multiple transactions by resource name.
operationId: Transactions_BatchGetTransactions
responses:
'200':
description: A successful response.
content:
application/json:
schema:
$ref: '#/components/schemas/v2BatchGetTransactionsResponse'
parameters:
- name: vault_id
in: path
required: true
schema:
type: string
- name: names
description: 'The resource names of the transactions to retrieve.
Format: `vaults/{vault_id}/transactions/{transaction_id}`'
in: query
required: true
explode: true
schema:
type: array
items:
type: string
- name: includeReferencedResources
description: Include referenced resources in the response.
in: query
required: false
schema:
type: boolean
- name: view
description: "The view of the transaction.\n\n - BASIC: The default view. Does not include certain fields such as blocking transactions.\n - FULL: Full view, include all fields."
in: query
required: false
schema:
type: string
enum:
- BASIC
- FULL
tags:
- Transactions
/v2/vaults/{vault_id}/transactions:
get:
summary: ListTransactions
description: Retrieve a list of all transactions in a vault.
operationId: Transactions_ListTransactions
responses:
'200':
description: A successful response.
content:
application/json:
schema:
$ref: '#/components/schemas/v2ListTransactionsResponse'
parameters:
- name: vault_id
in: path
required: true
schema:
type: string
- name: filter
description: 'A filter string to filter the results.
More details about filtering can be found in the [Filtering Documentation Page](https://docs.utila.io/reference/filtering).
Supported fields and functions:
| Name | Description | Example |
|------|-------------|---------|
| `create_time` | Filter by creation time (`string` comparison). | `create_time > "2023-08-29T18:04:00Z"` |
| `state` | Filter by one or more states (`enum...`). | `state(AWAITING_APPROVAL,AWAITING_SIGNATURE)` |
| `spam` | Filter by spam status (`bool`). | `spam(false)` |
| `from_wallet` | Filter by one or more source wallets (`string...`). | `from_wallet("vaults/123456789012/wallets/5a8b8085ccd0")` |
| `to_wallet` | Filter by one or more destination wallets (`string...`). | `to_wallet("vaults/123456789012/wallets/5a8b8085ccd0")` |
| `pending_user_approval` | Filter by user for which the transaction is awaiting approval (`string`). | `pending_user_approval("users/name@example.com")` |
| `asset` | Filter by one or more assets (`string...`). Supports v2 asset aliases. | `asset("assets/erc20.ethereum-mainnet.0x6b175474e89094c44da98b954eedeac495271d0f")` |
| `external_id` | Filter by client-provided external ID (`string`). | `external_id("order-123")` |'
in: query
required: false
schema:
type: string
- name: orderBy
description: 'SQL-like ordering specifications.
Supports the field `create_time`.'
in: query
required: false
schema:
type: string
- name: pageSize
description: 'The maximum number of items to return. The service may return fewer than
this value.
If unspecified, at most 50 will be returned.'
in: query
required: false
schema:
type: integer
format: int32
- name: pageToken
description: 'A page token, received from the previous list call as `nextPageToken`.
Provide this to retrieve the subsequent page.
When paginating, all other parameters must match the call that provided
the page token.'
in: query
required: false
schema:
type: string
- name: skip
description: 'How many results to skip.
Note: may be used alongside token-based pagination (see `pageToken`),
although this won''t be needed for most use cases.'
in: query
required: false
schema:
type: integer
format: int32
- name: includeReferencedResources
description: Include referenced resources in the response.
in: query
required: false
schema:
type: boolean
- name: view
description: "The view of the transaction.\n\n - BASIC: The default view. Does not include certain fields such as blocking transactions.\n - FULL: Full view, include all fields."
in: query
required: false
schema:
type: string
enum:
- BASIC
- FULL
tags:
- Transactions
/v2/vaults/{vault_id}/transactions:initiate:
post:
summary: InitiateTransaction
description: Initiate a new transaction.
operationId: Transactions_InitiateTransaction
responses:
'200':
description: A successful response.
content:
application/json:
schema:
$ref: '#/components/schemas/v2InitiateTransactionResponse'
parameters:
- name: vault_id
in: path
required: true
schema:
type: string
requestBody:
content:
application/json:
schema:
$ref: '#/components/schemas/TransactionsInitiateTransactionBody'
required: true
tags:
- Transactions
/v2/vaults/{vault_id}/transactionRequests/{transaction_request_id}:vote:
post:
summary: VoteOnTransactionRequest
description: Vote on a transaction request.
operationId: Transactions_VoteOnTransactionRequest
responses:
'200':
description: A successful response.
content:
application/json:
schema:
$ref: '#/components/schemas/v2VoteOnTransactionRequestResponse'
parameters:
- name: vault_id
in: path
required: true
schema:
type: string
- name: transaction_request_id
in: path
required: true
schema:
type: string
requestBody:
content:
application/json:
schema:
$ref: '#/components/schemas/TransactionsVoteOnTransactionRequestBody'
required: true
tags:
- Transactions
/v2/vaults/{vault_id}/transactions:estimateFee:
post:
summary: EstimateTransactionFee
description: Estimate the fee for a transaction.
operationId: Transactions_EstimateTransactionFee
responses:
'200':
description: A successful response.
content:
application/json:
schema:
$ref: '#/components/schemas/v2EstimateTransactionFeeResponse'
parameters:
- name: vault_id
in: path
required: true
schema:
type: string
requestBody:
content:
application/json:
schema:
$ref: '#/components/schemas/TransactionsEstimateTransactionFeeBody'
required: true
tags:
- Transactions
/v2/vaults/{vault_id}/transactions/{transaction_id}/simulations/latest:
get:
summary: GetLatestTransactionSimulation
operationId: Transactions_GetLatestTransactionSimulation
responses:
'200':
description: A successful response.
content:
application/json:
schema:
$ref: '#/components/schemas/v2GetLatestTransactionSimulationResponse'
parameters:
- name: vault_id
in: path
required: true
schema:
type: string
- name: transaction_id
in: path
required: true
schema:
type: string
- name: includeReferencedResources
description: Include referenced resources in the response.
in: query
required: false
schema:
type: boolean
tags:
- Transactions
/v2/vaults/{vault_id}/transactions/{transaction_id}:cancel:
post:
summary: CancelTransaction
description: 'Cancels a transaction. Used to cancel a transaction before it is signed.
Only the transaction''s initiator or an admin can cancel a transaction.
If the transaction has already been signed, use
[ReplaceTransaction](#tag/Transactions/operation/Transactions_ReplaceTransaction) instead.'
operationId: Transactions_CancelTransaction
responses:
'200':
description: A successful response.
content:
application/json:
schema:
$ref: '#/components/schemas/v2CancelTransactionResponse'
parameters:
- name: vault_id
in: path
required: true
schema:
type: string
- name: transaction_id
in: path
required: true
schema:
type: string
tags:
- Transactions
/v2/vaults/{vault_id}/transactions/{transaction_id}:replace:
post:
summary: ReplaceTransaction
description: 'Creates a new transaction that replaces an existing signed transaction in the system which has not been mined yet.
Only works for blockchains that support replacement of signed transactions, e.g.
- Ethereum - which has nonce management.
- BTC - which has RBF (Replace-By-Fee) and CPFP (Child-Pays-For-Parent) mechanisms.
Some blockchains do not support transaction replacement, e.g. TRON - which is based on
transaction expiration time - for these cases, the transaction will be either mined or
expired after the configured expiration time.
If the transaction has not been signed yet, and you wish to cancel it, use
[CancelTransaction](#tag/Transactions/operation/Transactions_CancelTransaction)
instead.'
operationId: Transactions_ReplaceTransaction
responses:
'200':
description: A successful response.
content:
application/json:
schema:
$ref: '#/components/schemas/v2ReplaceTransactionResponse'
parameters:
- name: vault_id
in: path
required: true
schema:
type: string
- name: transaction_id
in: path
required: true
schema:
type: string
requestBody:
content:
application/json:
schema:
$ref: '#/components/schemas/TransactionsReplaceTransactionBody'
required: true
tags:
- Transactions
/v2/vaults/{vault_id}/transactions/{transaction_id}:publish:
post:
summary: PublishTransaction
description: 'Manually publishes a signed transaction to the blockchain. This endpoint synchronously
broadcasts the transaction to the network and returns the updated transaction details.
The transaction must be fully signed before publishing.
**Note:** Currently only available for EVM-compatible blockchains. Support for additional
blockchains will be added in future releases.'
operationId: Transactions_PublishTransaction
responses:
'200':
description: A successful response.
content:
application/json:
schema:
$ref: '#/components/schemas/v2PublishTransactionResponse'
parameters:
- name: vault_id
in: path
required: true
schema:
type: string
- name: transaction_id
in: path
required: true
schema:
type: string
requestBody:
content:
application/json:
schema:
$ref: '#/components/schemas/TransactionsPublishTransactionBody'
required: true
tags:
- Transactions
/v2/vaults/{vault_id}/transactions/{transaction_id}/amlScreening:
get:
summary: GetTransactionAMLScreening
description: If the transaction was screened for AML, this endpoint will return the results. Relevant where screening is configured.
operationId: Transactions_GetTransactionAMLScreening
responses:
'200':
description: A successful response.
content:
application/json:
schema:
$ref: '#/components/schemas/v2GetTransactionAMLScreeningResponse'
parameters:
- name: vault_id
in: path
required: true
schema:
type: string
- name: transaction_id
in: path
required: true
schema:
type: string
tags:
- Transactions
components:
schemas:
v2EVMTransactionParams:
type: object
properties:
gasSettings:
description: Custom gas settings. Used only if generic priority is not set.
allOf:
- $ref: '#/components/schemas/v2EVMPriority'
nonce:
type: string
description: Optional nonce for the transaction. If omitted, Utila will determine the nonce automatically.
v2TransactionTronTransactionUnfreezeBalanceV2:
type: object
properties:
ownerAddress:
description: 'The source of the transaction.
A base58 string address (example: `TZ4UXDV5ZhNW7fb2AMSbgfAEZ7hWsnYS2g`)'
allOf:
- $ref: '#/components/schemas/apiv2Address'
amount:
type: string
example: '1500000'
description: 'Amount of TRX to be unstaked, in SUN.
Example: `1500000`.'
resource:
description: 'The resource to unfreeze.
Can be one of the following:
1. `BANDWIDTH`
2. `ENERGY`'
allOf:
- $ref: '#/components/schemas/v2TransactionTronTransactionTronResourceEnum'
asset:
type: string
example: assets/native.tron-mainnet
description: 'The asset that is being unstaked.
Example: `assets/native.tron-mainnet`.'
apiUserRoleEnum:
type: string
enum:
- ADMIN
- SIGNER
- VIEWER
- OWNER
- NON_SIGNING_OPERATOR
- NON_SIGNING_ADMIN
OperationBodySEP41TokenApproval:
type: object
properties:
sourceAddress:
type: string
description: 'The address holding the balance of tokens the allowance is drawn
from (the SEP41 `from` argument).
A Stellar address (example: `GAAAAAAAACGC6SEYFBKQ33QJ2FXVEP3EJ6BE2FCVW2SSP6X5TBNQYQ`).'
spenderAddress:
type: string
description: 'The address being authorized to spend the tokens held by
`source_address` (the SEP41 `spender` argument).
A Stellar address (example: `GAAAAAAAACGC6SEYFBKQ33QJ2FXVEP3EJ6BE2FCVW2SSP6X5TBNQYQ`).'
contractAddress:
type: string
example: CB3WFHO46J3WGRAIARNT3XD4Z7NR5SZDNG3SVKN27GOTJAQGQFAH2KAJ
description: 'The token whose allowance is being set.
A contract address of a SEP41 token (example: `CB3WFHO46J3WGRAIARNT3XD4Z7NR5SZDNG3SVKN27GOTJAQGQFAH2KAJ`).'
rawAmount:
type: string
description: 'The amount to be made available to `spender_address`.
Example: `10000000`.'
liveUntilLedgerNumber:
type: string
format: int64
description: 'The ledger number where this allowance expires. Cannot be less than
the current ledger number unless the amount is being set to 0.'
required:
- sourceAddress
- spenderAddress
- contractAddress
- rawAmount
- liveUntilLedgerNumber
v2EstimateTransactionFeeRequestDetails:
type: object
properties:
assetTransfer:
description: An abstract transfer.
allOf:
- $ref: '#/components/schemas/v2AssetTransfer'
assetBatchTransfer:
description: A batch transfer.
allOf:
- $ref: '#/components/schemas/v2BatchAssetTransfer'
evmTransaction:
description: An EVM transaction.
allOf:
- $ref: '#/components/schemas/apiv2EVMTransaction'
tronTriggerSmartContract:
description: 'Deprecated: Use `tron_transaction` with `trigger_smart_contract` instead.'
allOf:
- $ref: '#/components/schemas/v2TronTriggerSmartContract'
tronTransaction:
description: A Tron transaction.
allOf:
- $ref: '#/components/schemas/apiv2TronTransaction'
btcTransfer:
description: A transfer for Bitcoin and similar UTXO-based blockchains, with explicit input control.
allOf:
- $ref: '#/components/schemas/v2BTCTransfer'
title: Transaction type
TransactionTonTransactionMessage:
type: object
properties:
address:
type: string
description: The destination of the call.
amount:
type: string
description: Native Nanoton amount to send.
payload:
type: string
title: 'The payload of the message.
If not provided - This means this message is a contract deployment or a native transfer'
stateInit:
type: string
description: The initial state of the message.
required:
- address
- amount
apiv2TronTransactionUnfreezeBalanceV2:
type: object
properties:
ownerAddress:
type: string
description: 'The source of the transaction.
Can be one of the following:
1. A hex string address, must start with 41 (example: `418840E6C55B9ADA326D211D818C34A994AECED808`)
2. A base58 string address (example: `TZ4UXDV5ZhNW7fb2AMSbgfAEZ7hWsnYS2g`)'
amount:
type: string
example: '1500000'
description: 'Amount of TRX to be unstaked, in SUN.
Example: `1500000`.'
resource:
description: 'The type of resource to unstake TRX from.
When you unfreeze (unstake) TRX, you release resources that can be used for transactions.
The resources are available for withdrawal after 14 days.
Can be one of the following:
1. `BANDWIDTH`
2. `ENERGY`'
allOf:
- $ref: '#/components/schemas/apiv2TronTransactionTronResourceEnum'
required:
- ownerAddress
- amount
- resource
TransactionTransferPrivateToPublic:
type: object
properties:
sender:
$ref: '#/components/schemas/apiv2Address'
recipient:
$ref: '#/components/schemas/apiv2Address'
sentAmount:
type: string
description: Amount credited to the recipient's public account.
changeAmount:
type: string
description: Remainder returned to the sender as a record.
v2Wallet:
type: object
properties:
name:
type: string
example: vaults/1b25635a5b3f/wallets/95257c5a522f
description: 'The resource name of the wallet.
Format: `vaults/{vault_id}/wallets/{wallet_id}`'
readOnly: true
displayName:
type: string
example: DeFi wallet
description: 'A human-readable name.
Must match the regular expression `[a-zA-Z0-9\.,:\-''# _$]+$` and be shorter than 100 characters'
external:
type: boolean
description: 'Whether this wallet is external.
External wallets are wallets that are not managed by Utila.'
readOnly: true
archived:
type: boolean
description: Whether this wallet is archived.
readOnly: true
convertedValue:
description: 'The converted value of all assets in this Wallet.
Included only when `FULL` view is requested.
Note: this is an estimate, and may be out of date.'
readOnly: true
allOf:
- $ref: '#/components/schemas/v2ConvertedValue'
hasFrozenAssets:
type: boolean
example: true
description: 'Some of the assets in this wallet are frozen due to a AML policy.
Included only when `FULL` view is requested.'
readOnly: true
networks:
type: array
example:
- networks/ethereum-mainnet
items:
type: string
description: 'The resource names of the networks of the wallet. Can be set during creation and can be added later
through the `CreateWalletAddress` method.'
evmDetails:
description: If this wallet contains an EVM network, this field will be populated.
readOnly: true
allOf:
- $ref: '#/components/schemas/v2WalletEVMDetails'
tronDetails:
description: If this wallet contains a Tron network, this field will be populated.
readOnly: true
allOf:
- $ref: '#/components/schemas/WalletTronDetails'
tonDetails:
description: If this wallet contains a Ton network, this field will be populated.
readOnly: true
allOf:
- $ref: '#/components/schemas/v2WalletTonDetails'
solanaDetails:
description: If this wallet contains a Solana network, this field will be populated.
readOnly: true
allOf:
- $ref: '#/components/schemas/WalletSolanaDetails'
xrplDetails:
description: If this wallet contains an XRPL network, this field will be populated.
readOnly: true
allOf:
- $ref: '#/components/schemas/WalletXRPLDetails'
createParams:
description: Parameters only used during wallet creation. Not included in responses.
allOf:
- $ref: '#/components/schemas/WalletCreateParams'
btcDetails:
description: If this wallet contains a Bitcoin network, this field will be populated.
readOnly: true
allOf:
- $ref: '#/components/schemas/v2WalletBTCDetails'
required:
- displayName
- networks
v2WalletTonDetails:
type: object
properties:
address:
type: string
description: The address of the wallet.
readOnly: true
v2EVMTransactionGas:
type: object
properties:
gasLimit:
type: string
format: int64
description: The amount of gas to use for the transaction.
gasUsed:
type: string
description: The amount of gas used by the transaction.
gasPrice:
type: string
description: 'A `0x`-prefixed hex string representing the gas price of the transaction.
Used for legacy transactions (non EIP-1559).'
maxPriorityFeePerGas:
type: string
description: 'A `0x`-prefixed hex string representing the maximum prioriy fee per gas unit the transaction can pay.
Used for dynamic transactions (EIP-1559).'
maxFeePerGas:
type: string
description: 'A `0x`-prefixed hex string representing the maximum fee per gas unit the transaction can pay.
Used for dynamic transactions (EIP-1559).'
v2TransactionStellarTransactionMemo:
type: object
properties:
type:
description: The type of the memo.
allOf:
- $ref: '#/components/schemas/v2TransactionStellarTransactionMemoTypeEnum'
data:
type: string
description: The data of the memo.
required:
- type
- data
apiv2TronTransactionTronResourceEnum:
type: string
enum:
- BANDWIDTH
- ENERGY
v2EVMPersonalSign:
type: object
properties:
fromAddress:
type: string
description: 'The address to sign the message with.
Can be one of the following:
1. A `0x`-prefixed hex string address, must be matched by a wallet address in the current vault (example: `0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48`)
2. A wallet resource name: `vaults/{vault_id}/wallets/{wallet_id}`
3. A specific wallet address resource name: `vaults/{vault_id}/wallets/{wallet_id}/addresses/{address_id}`'
message:
type: string
description: 'A utf-8 encoded message to sign.
One of `message`, `messageHex` is required.
Example: `hello`.'
messageHex:
type: string
description: 'A utf-8 hex encoded message to sign, must start with `0x`.
One of `message`, `messageHex` is required.
Example: `0x68656c6c6f` (representing `hello`)'
required:
- fromAddress
v2TransactionTonProof:
type: object
properties:
address:
type: string
description: 'The address of the signer.
In Raw address format.
Example: `0:1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef`.'
appDomain:
type: string
title: The domain of the app requested the proof
payload:
type: string
description: The payload to sign.
timestamp:
type: string
format: int64
description: The time at which the signature was created.
signature:
type: string
description: The signature of the payload.
v2InitiateTransactionResponse:
type: object
properties:
transaction:
description: The created transaction.
allOf:
- $ref: '#/components/schemas/v2Transaction'
referencedResources:
type: object
additionalProperties:
$ref: '#/components/schemas/v2ReferencedResource'
description: 'A mapping of the referenced resources in the message.
The key is the resource name and the value is the corresponding resource.'
referencedAddressesInfo:
type: object
additionalProperties:
$ref: '#/components/schemas/v2NetworkAddressInfo'
description: 'A mapping of the referenced addresses in the message.
The key is the address and the value is the corresponding address info.'
TransactionTransitionValue:
type: object
properties:
type:
type: string
description: '"record", "public", "private", or "future".'
value:
type: string
description: Plaintext value (decrypted if private).
v2TransactionTronTransactionWithdrawBalance:
type: object
properties:
ownerAddress:
description: 'The source of the transaction.
A base58 string address (example: `TZ4UXDV5ZhNW7fb2AMSbgfAEZ7hWsnYS2g`)'
allOf:
- $ref: '#/components/schemas/apiv2Address'
v2TransactionAMLScreening:
type: object
properties:
provider:
$ref: '#/components/schemas/TransactionAMLScreeningProviderEnum'
rawResponses:
type: array
items:
type: string
OperationBodyChangeTrust:
type: object
properties:
asset:
type: string
description: 'A Stellar asset `{asset_code}-{issuer}`.
Example: `USDC-GA5ZSEJYB37JRC5AVCIA5MOP4RHTM335X2KGX3IHOJAPP5RE34K4KZVN`.'
limit:
type: string
description: 'The limit of the change trust.
For unlimited amount, don''t provide this field.
Example: `10000000` (1 XLM in stroops).'
required:
- asset
v2BatchGetTransactionsResponse:
type: object
properties:
transactions:
type: array
items:
$ref: '#/components/schemas/v2Transaction'
description: The transactions retrieved.
referencedResources:
type: object
additionalProperties:
$ref: '#/components/schemas/v2ReferencedResource'
description: 'A mapping of the referenced resources in the message.
The key is the resource name and the value is the corresponding resource.'
referencedAddressesInfo:
type: object
additionalProperties:
$ref: '#/components/schemas/v2NetworkAddressInfo'
description: 'A mapping of the referenced addresses in the message.
The key is the address and the value is the corresponding address info.'
v2TransactionTronTransactionTronResourceEnum:
type: string
enum:
- BANDWIDTH
- ENERGY
StellarTransactionDecodedOperationBody:
type: object
properties:
payment:
$ref: '#/components/schemas/StellarTransactionDecodedOperationBodyPayment'
createAccount:
$ref: '#/components/schemas/StellarTransactionDecodedOperationBodyCreateAccount'
changeTrust:
$ref: '#/components/schemas/StellarTransactionDecodedOperationBodyChangeTrust'
sep41Payment:
$ref: '#/components/schemas/StellarTransactionDecodedOperationBodySEP41Payment'
sep41TokenApproval:
$ref: '#/components/schemas/StellarTransactionDecodedOperationBodySEP41TokenApproval'
v2SolanaSerializedTransaction:
type: object
properties:
network:
type: string
example: networks/solana-mainnet
description: 'The resource name of the network of the transaction.
Format: `networks/{network_id}`.'
rawTransaction:
type: string
format: byte
description: 'The full transaction payload serialized.
The message and signatures, encoded in base64 format.'
publish:
type: boolean
description: 'Set to true if you wish for Utila to automatically broadcast the transaction after it is signed. Default: true.'
replaceBlockhash:
type: boolean
description: If set to true, the transaction recent blockhash will be replaced with the most recent blockhash before signing.
tryReplaceBlockhash:
type: boolean
description: 'If set to true, Utila will check whether the transaction can have its blockhash replaced automatically.
The blockhash will be replaced if the transaction does not use a durable nonce AND all signers
of the transaction are wallets in the current vault.
If the conditions are met, behaves as if `replace_blockhash` was set to true.'
required:
- network
- rawTransaction
apiv2EVMTransaction:
type: object
properties:
network:
type
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# Full source: https://raw.githubusercontent.com/api-evangelist/utila/refs/heads/main/openapi/utila-transactions-api-openapi.yml