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Circle

Circle Transactions API

The Transactions API from Circle — 12 operation(s) for transactions.

Documentation Provider Profile APIs.io OpenAPI GitHub

Circle Transactions API is one of 7 APIs that Circle publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Transaction. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.

This API exposes 12 operations across 12 paths. It is described by OpenAPI 3.2.0, at version 2026-05-23.

Requests are made against a single base URL, https://api.circle.com.

12 operations 12 paths 0 schemas 4 GET8 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
2026-05-23
Base URL
https://api.circle.com/v1/w3s
Authentication
HTTP Bearer
Contact
Circle Developer Support
License
Proprietary
Resource Areas
1

Authentication & Security 1

Circle Transactions API declares 1 security scheme for authenticating requests. It accepts HTTP bearer tokens (BearerAuth). By default, every request must be authenticated.

  • BearerAuth — Circle API key, formatted as PREFIX:ID:SECRET, supplied as Bearer token.

Paths & Operations 12

Across 12 paths, the API surfaces 12 operations — 4 GET, 8 POST. Each is listed below with its method, path, parameters, and response codes.

Transactions 12
GET
/v1/w3s/transactions
List transactions
listTransactions → 200
GET
/v1/w3s/transactions/{id}
Get transaction
getTransaction 1 param → 200
GET
/v1/w3s/transactions/lowestNonceTransaction
Get lowest nonce transaction
getLowestNonceTransaction → 200
GET
/v1/w3s/developer/transactions/feeParameters
Get fee parameters
getFeeParameters → 200
POST
/v1/w3s/developer/transactions/transfer
Create a transfer transaction
createTransferTransaction → 201
POST
/v1/w3s/transactions/transfer/estimateFee
Estimate transfer fee
estimateTransferFee → 200
POST
/v1/w3s/transactions/contractExecution/estimateFee
Estimate contract-execution fee
estimateContractExecutionFee → 200
POST
/v1/w3s/transactions/validateAddress
Validate a blockchain address
validateAddress → 200
POST
/v1/w3s/developer/transactions/contractExecution
Create contract-execution transaction
createContractExecution → 201
POST
/v1/w3s/developer/transactions/walletUpgrade
Create wallet-upgrade transaction
createWalletUpgrade → 201
POST
/v1/w3s/developer/transactions/{id}/cancel
Cancel a transaction
cancelTransaction 1 param → 200
POST
/v1/w3s/developer/transactions/{id}/accelerate
Accelerate a transaction
accelerateTransaction 1 param → 200

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

circle-transactions-api-openapi.yml Raw ↑

Other APIs Circle publishes across the network.

Gas Station and Paymaster
AE Profile APIs.io
Circle NFTs API
AE Profile APIs.io
Circle Signing API
AE Profile APIs.io
Circle Tokens API
AE Profile APIs.io
Circle Wallet Sets API
AE Profile APIs.io
Circle Wallets API
AE Profile APIs.io
#Transaction
← Back to C APIs
API Details
ID
circle:circle-transactions-api
Base URL
https://api.circle.com/v1/w3s
Docs
https://developers.circle.com/w3s/programmable-wallets
Provider
Circle
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