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Flow Transactions API

The Transactions API from Flow — 4 operation(s) for transactions.

Flow Transactions API is one of 11 APIs that Flow 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, API documentation, and rate-limit docs.

This API exposes 5 operations across 4 paths, and defines 16 schemas. It is described by OpenAPI 3.0.0, at version 1.0.0.

Requests are made against 2 base URLs: https://rest-testnet.onflow.org/v1, https://rest-mainnet.onflow.org/v1.

5 operations 4 paths 16 schemas 4 GET1 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.0.0
API Version
1.0.0
Base URL
https://rest-mainnet.onflow.org/v1
Resource Areas
1

Paths & Operations 5

Across 4 paths, the API surfaces 5 operations — 4 GET, 1 POST. Each is listed below with its method, path, parameters, and response codes.

Transactions 5
GET
/transactions/{id}
Get a Transaction by ID.
5 params → 200400404500
GET
/transaction_results
Get Transaction Results by block
7 params → 200400404500
GET
/transaction_results/{transaction_id}
Get a Transaction Result by transaction ID or scheduled transaction ID.
8 params → 200400404500
GET
/transactions
Get Transactions by block
4 params → 200400404500
POST
/transactions
Submit a Transaction
body → 201400500

Schemas 16

The contract defines 16 schemas that model the data the API accepts and returns. The most detailed are Transaction (13 properties), TransactionResult (10 properties), Event (5 properties), ProposalKey (3 properties). Each schema is shown below with its type and property counts.

TransactionStatus
string
This value indicates the state of the transaction execution. Only sealed and expired are final and immutable states.
Address
string
The 8-byte address of an account.
TransactionSignature
object
Base64 encoded signature.
3 properties 3 required
Identifier
string
A 32-byte unique identifier for an entity.
Event
object
5 properties 5 required
ExecutorMetadata
object
Contains data about the execution result used to serve the request.
2 properties
Links
object
1 property
TransactionExecution
string
This value indicates whether the transaction execution succeded or not, this value should be checked when determining transaction success.
BlockHeight
Transaction
object
13 properties 11 required
EventType
string
The qualified event type.
Signature
string
A variable length signature.
Error
object
2 properties
ProposalKey
object
3 properties 3 required
TransactionResult
object
10 properties 7 required
Metadata
object
Contains data about the node's state at the time of the request.
1 property

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

flow-blockchain-transactions-api-openapi.yml Raw ↑

Other APIs Flow publishes across the network.

Flow Accounts API
Flow Blocks API
Flow Collections API
Flow Events API
Flow Execution Receipts API
Flow Execution Results API
Flow Network API
Flow NodeVersionInfo API
Flow Scripts API
Flow Subscribe events API
Where this information came from

This is an independent, third-party profile of Flow Transactions API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

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