Cardano » Mempool API
The Cardano » Mempool API from Cardano — 3 operation(s) for cardano » mempool.
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OpenAPI Specification
openapi: 3.2.0
info:
version: 0.1.89
title: Blockfrost.io ~ API Documentation Cardano » Mempool API
x-logo:
url: https://staging.blockfrost.io/images/logo.svg
altText: Blockfrost
contact:
name: Blockfrost Team
url: https://blockfrost.io
email: contact@blockfrost.io
license:
name: MIT
url: https://opensource.org/licenses/MIT
termsOfService: https://blockfrost.io/terms
description: Blockfrost is an API as a service that allows users to interact with the Cardano blockchain, Midnight blockchain, and parts of their ecosystems.
servers:
- url: https://cardano-mainnet.blockfrost.io/api/v0
description: Cardano Mainnet network
- url: https://cardano-preprod.blockfrost.io/api/v0
description: Cardano Preprod network
- url: https://cardano-preview.blockfrost.io/api/v0
description: Cardano Preview network
- url: https://localhost:3000
description: local
security:
- project_id: []
tags:
- name: Cardano » Mempool
paths:
/mempool:
get:
tags:
- Cardano » Mempool
summary: Mempool
description: 'Return transactions that are currently stored in Blockfrost mempool,
waiting to be included in a newly minted block.
Shows only transactions submitted via Blockfrost.io.
Hosted Endpoint only available for hosted variant.'
parameters:
- in: query
name: count
required: false
schema:
type: integer
minimum: 1
maximum: 100
default: 100
description: The number of results displayed on one page.
- in: query
name: page
required: false
schema:
type: integer
minimum: 1
maximum: 21474836
default: 1
description: The page number for listing the results.
- in: query
name: order
required: false
schema:
type: string
enum:
- asc
- desc
default: asc
description: 'Ordered by the time of transaction submission.
By default, we return oldest first, newest last.
'
responses:
'200':
description: Return the contents of the mempool
content:
application/json:
schema:
$ref: '#/components/schemas/mempool_content'
'400':
$ref: '#/components/responses/400'
'403':
$ref: '#/components/responses/403'
'404':
$ref: '#/components/responses/404'
'418':
$ref: '#/components/responses/418'
'429':
$ref: '#/components/responses/429'
'500':
$ref: '#/components/responses/500'
operationId: getMempool
x-operation-id-source: derived
/mempool/{hash}:
get:
tags:
- Cardano » Mempool
summary: Specific transaction in the mempool
description: 'Return content of the requested transaction.
Hosted Endpoint only available for hosted variant.'
parameters:
- in: path
name: hash
required: true
schema:
type: string
format: 64-character case-sensitive hexadecimal string.
description: Hash of the requested transaction
example: 6e5f825c42c1c6d6b77f2a14092f3b78c8f1b66db6f4cf8caec1555b6f967b3b
responses:
'200':
description: Return the contents of the transaction.
content:
application/json:
schema:
$ref: '#/components/schemas/mempool_tx_content'
'400':
$ref: '#/components/responses/400'
'403':
$ref: '#/components/responses/403'
'404':
$ref: '#/components/responses/404'
'418':
$ref: '#/components/responses/418'
'429':
$ref: '#/components/responses/429'
'500':
$ref: '#/components/responses/500'
operationId: getMempoolByHash
x-operation-id-source: derived
/mempool/addresses/{address}:
get:
tags:
- Cardano » Mempool
summary: Mempool by address
description: 'List of mempool transactions where at least one of the transaction inputs or outputs belongs to the address.
Shows only transactions submitted via Blockfrost.io.
Hosted Endpoint only available for hosted variant.'
parameters:
- in: path
name: address
required: true
schema:
type: string
format: 64-character case-sensitive hexadecimal string.
description: Bech32 address.
example: addr1qxqs59lphg8g6qndelq8xwqn60ag3aeyfcp33c2kdp46a09re5df3pzwwmyq946axfcejy5n4x0y99wqpgtp2gd0k09qsgy6pz
- in: query
name: count
required: false
schema:
type: integer
minimum: 1
maximum: 100
default: 100
description: The number of results displayed on one page.
- in: query
name: page
required: false
schema:
type: integer
minimum: 1
maximum: 21474836
default: 1
description: The page number for listing the results.
- in: query
name: order
required: false
schema:
type: string
enum:
- asc
- desc
default: asc
description: 'Ordered by the time of transaction submission.
By default, we return oldest first, newest last.
'
responses:
'200':
description: Return the contents of the mempool
content:
application/json:
schema:
$ref: '#/components/schemas/mempool_addresses_content'
'400':
$ref: '#/components/responses/400'
'403':
$ref: '#/components/responses/403'
'404':
$ref: '#/components/responses/404'
'418':
$ref: '#/components/responses/418'
'429':
$ref: '#/components/responses/429'
'500':
$ref: '#/components/responses/500'
operationId: getMempoolAddressesByAddress
x-operation-id-source: derived
components:
responses:
'400':
description: Bad request
content:
application/json:
schema:
type: object
properties:
status_code:
type: integer
example: 400
error:
type: string
example: Bad Request
message:
type: string
example: Backend did not understand your request.
required:
- error
- message
- status_code
'418':
description: IP has been auto-banned for extensive sending of requests after usage limit has been reached
content:
application/json:
schema:
type: object
properties:
status_code:
type: integer
example: 418
error:
type: string
example: Requested Banned
message:
type: string
example: IP has been auto-banned for flooding.
required:
- error
- message
- status_code
'500':
description: Internal Server Error
content:
application/json:
schema:
type: object
properties:
status_code:
type: integer
example: 500
error:
type: string
example: Internal Server Error
message:
type: string
example: An unexpected response was received from the backend.
required:
- error
- message
- status_code
'403':
description: Authentication secret is missing or invalid
content:
application/json:
schema:
type: object
properties:
status_code:
type: integer
example: 403
error:
type: string
example: Forbidden
message:
type: string
example: Invalid project token.
required:
- error
- message
- status_code
'404':
description: Component not found
content:
application/json:
schema:
type: object
properties:
status_code:
type: integer
example: 404
error:
type: string
example: Not Found
message:
type: string
example: The requested component has not been found.
required:
- error
- message
- status_code
'429':
description: Usage limit reached
content:
application/json:
schema:
type: object
properties:
status_code:
type: integer
example: 429
error:
type: string
example: Project Over Limit
message:
type: string
example: Usage is over limit.
required:
- error
- message
- status_code
schemas:
mempool_tx_content:
type: object
properties:
tx:
type: object
properties:
hash:
type: string
example: 1e043f100dce12d107f679685acd2fc0610e10f72a92d412794c9773d11d8477
description: Transaction hash
output_amount:
type: array
items:
type: object
description: The sum of all the UTXO per asset
properties:
unit:
type: string
format: Lovelace or concatenation of asset policy_id and hex-encoded asset_name
description: The unit of the value
quantity:
type: string
description: The quantity of the unit
required:
- unit
- quantity
example:
- unit: lovelace
quantity: '42000000'
- unit: b0d07d45fe9514f80213f4020e5a61241458be626841cde717cb38a76e7574636f696e
quantity: '12'
fees:
type: string
example: '182485'
description: Fees of the transaction in Lovelaces
deposit:
type: string
example: '0'
description: Deposit within the transaction in Lovelaces
size:
type: integer
example: 433
description: Size of the transaction in Bytes
invalid_before:
type:
- string
- 'null'
example: null
description: Left (included) endpoint of the timelock validity intervals
invalid_hereafter:
type:
- string
- 'null'
example: '13885913'
description: Right (excluded) endpoint of the timelock validity intervals
utxo_count:
type: integer
example: 4
description: Count of UTXOs within the transaction
withdrawal_count:
type: integer
example: 0
description: Count of the withdrawals within the transaction
mir_cert_count:
type: integer
example: 0
description: Count of the MIR certificates within the transaction
delegation_count:
type: integer
example: 0
description: Count of the delegations within the transaction
stake_cert_count:
type: integer
example: 0
description: Count of the stake keys (de)registration within the transaction
pool_update_count:
type: integer
example: 0
description: Count of the stake pool registration and update certificates within the transaction
pool_retire_count:
type: integer
example: 0
description: Count of the stake pool retirement certificates within the transaction
asset_mint_or_burn_count:
type: integer
example: 0
description: Count of asset mints and burns within the transaction
redeemer_count:
type: integer
example: 0
description: Count of redeemers within the transaction
valid_contract:
type: boolean
example: true
description: True if contract script passed validation
required:
- hash
- output_amount
- fees
- deposit
- size
- invalid_before
- invalid_hereafter
- utxo_count
- withdrawal_count
- mir_cert_count
- delegation_count
- stake_cert_count
- pool_update_count
- pool_retire_count
- asset_mint_or_burn_count
- redeemer_count
- valid_contract
inputs:
type: array
items:
type: object
properties:
address:
type: string
example: addr1q9ld26v2lv8wvrxxmvg90pn8n8n5k6tdst06q2s856rwmvnueldzuuqmnsye359fqrk8hwvenjnqultn7djtrlft7jnq7dy7wv
description: Input address
tx_hash:
type: string
example: 1a0570af966fb355a7160e4f82d5a80b8681b7955f5d44bec0dce628516157f0
description: Hash of the UTXO transaction
output_index:
type: integer
example: 0
description: UTXO index in the transaction
collateral:
type: boolean
example: false
description: Whether the input is a collateral consumed on script validation failure
reference:
type: boolean
example: false
description: Whether the input is a reference transaction input
required:
- tx_hash
- output_index
- collateral
outputs:
type: array
items:
type: object
properties:
address:
type: string
example: addr1q9ld26v2lv8wvrxxmvg90pn8n8n5k6tdst06q2s856rwmvnueldzuuqmnsye359fqrk8hwvenjnqultn7djtrlft7jnq7dy7wv
description: Output address
amount:
type: array
items:
type: object
description: The sum of all the UTXO per asset
properties:
unit:
type: string
format: Lovelace or concatenation of asset policy_id and hex-encoded asset_name
description: The unit of the value
quantity:
type: string
description: The quantity of the unit
required:
- unit
- quantity
example:
- unit: lovelace
quantity: '42000000'
- unit: b0d07d45fe9514f80213f4020e5a61241458be626841cde717cb38a76e7574636f696e
quantity: '12'
output_index:
type: integer
example: 0
description: UTXO index in the transaction
data_hash:
type:
- string
- 'null'
description: The hash of the transaction output datum
example: 9e478573ab81ea7a8e31891ce0648b81229f408d596a3483e6f4f9b92d3cf710
inline_datum:
type:
- string
- 'null'
description: CBOR encoded inline datum
example: 19a6aa
collateral:
type: boolean
example: false
description: Whether the output is a collateral output
reference_script_hash:
type:
- string
- 'null'
description: The hash of the reference script of the output
example: 13a3efd825703a352a8f71f4e2758d08c28c564e8dfcce9f77776ad1
required:
- address
- amount
- output_index
- data_hash
- inline_datum
- collateral
- reference_script_hash
redeemers:
type: array
items:
type: object
properties:
tx_index:
type: integer
example: 0
description: Index of the redeemer within the transaction
purpose:
type: string
enum:
- spend
- mint
- cert
- reward
example: spend
description: Validation purpose
unit_mem:
type: string
example: '1700'
description: The budget in Memory to run a script
unit_steps:
type: string
example: '476468'
description: The budget in CPU steps to run a script
required:
- tx_index
- purpose
- unit_mem
- unit_steps
required:
- tx
- inputs
- outputs
mempool_addresses_content:
type: array
items:
type: object
properties:
tx_hash:
type: string
description: Hash of the transaction
required:
- tx_hash
example:
- tx_hash: 1a0570af966fb355a7160e4f82d5a80b8681b7955f5d44bec0dce628516157f0
mempool_content:
type: array
items:
type: object
properties:
tx_hash:
type: string
description: Hash of the transaction
required:
- tx_hash
example:
- tx_hash: 1a0570af966fb355a7160e4f82d5a80b8681b7955f5d44bec0dce628516157f0
securitySchemes:
project_id:
type: apiKey
in: header
name: project_id
description: '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.
'