Need help with your APIs? I offer API discovery, governance & evangelism services. Explore services →
API Evangelist API Evangelist
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC

Cardano Cardano » Transactions API

The Cardano » Transactions API from Cardano — 14 operation(s) for cardano » transactions.

Cardano Cardano » Transactions API is one of 21 APIs that Cardano publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Cardano » Transactions. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, and rate-limit docs.

This API exposes 14 operations across 14 paths, and defines 13 schemas. It is described by OpenAPI 3.0.3, at version 0.1.89.

Requests are made against 4 base URLs: https://cardano-mainnet.blockfrost.io/api/v0, https://cardano-preprod.blockfrost.io/api/v0, https://cardano-preview.blockfrost.io/api/v0, https://localhost:3000.

14 operations 14 paths 13 schemas 13 GET1 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.0.3
API Version
0.1.89
Base URL
https://cardano-mainnet.blockfrost.io/api/v0
Authentication
API Key
License
Terms of Service
Resource Areas
1

Authentication & Security 1

Cardano Cardano » Transactions API declares 1 security scheme for authenticating requests. An API key is passed in the header as project_id (project_id). By default, every request must be authenticated.

  • project_id — There are multiple token types available based on network you choose when creating a Blockfrost a project, for a list of token types see available networks.

Paths & Operations 14

Across 14 paths, the API surfaces 14 operations — 13 GET, 1 POST. Each is listed below with its method, path, parameters, and response codes.

Cardano » Transactions 14
GET
/txs/{hash}
Specific transaction
1 param → 200400403404418429500
GET
/txs/{hash}/utxos
Transaction UTXOs
1 param → 200400403404418429500
GET
/txs/{hash}/stakes
Transaction stake addresses certificates
1 param → 200400403404418429500
GET
/txs/{hash}/delegations
Transaction delegation certificates
1 param → 200400403404418429500
GET
/txs/{hash}/withdrawals
Transaction withdrawal
1 param → 200400403404418429500
GET
/txs/{hash}/mirs
Transaction MIRs
1 param → 200400403404418429500
GET
/txs/{hash}/pool_updates
Transaction stake pool registration and update certificates
1 param → 200400403404418429500
GET
/txs/{hash}/pool_retires
Transaction stake pool retirement certificates
1 param → 200400403404418429500
GET
/txs/{hash}/metadata
Transaction metadata
1 param → 200400403404418429500
GET
/txs/{hash}/metadata/cbor
Transaction metadata in CBOR
1 param → 200400403404418429500
GET
/txs/{hash}/redeemers
Transaction redeemers
1 param → 200400403404418429500
GET
/txs/{hash}/required_signers
Transaction required signers
1 param → 200400403404418429500
GET
/txs/{hash}/cbor
Transaction CBOR
1 param → 200400403404418429500
POST
/tx/submit
Submit a transaction
body → 200400403404418425429500

Schemas 13

The contract defines 13 schemas that model the data the API accepts and returns. The most detailed are tx_content (23 properties), tx_content_utxo (3 properties), tx_content_cbor (1 property). Each schema is shown below with its type and property counts.

tx_content_metadata_cbor
array
tx_content_redeemers
array
tx_content_utxo
object
3 properties 3 required
tx_content_pool_retires
array
tx_content_delegations
array
tx_content_mirs
array
tx_content_stake_addr
array
tx_content_withdrawals
array
tx_content_pool_certs
array
tx_content_required_signers
array
tx_content
object
23 properties 23 required
tx_content_metadata
array
tx_content_cbor
object
1 property 1 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

cardano-cardano-transactions-api-openapi.yml Raw ↑

Other APIs Cardano publishes across the network.

Blockfrost IPFS API
Cardano Cardano » Accounts API
Cardano Cardano » Addresses API
Cardano Cardano » Assets API
Cardano Cardano » Blocks API
Cardano Cardano » Epochs API
Cardano Cardano » Governance API
Cardano Cardano » Ledger API
Cardano Cardano » Mempool API
Cardano Cardano » Metadata API
Cardano Cardano » Network API
Cardano Cardano » Pools API