Cardano Cardano » Epochs API
The Cardano » Epochs API from Cardano — 10 operation(s) for cardano » epochs.
The Cardano » Epochs API from Cardano — 10 operation(s) for cardano » epochs.
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openapi: 3.2.0
info:
version: 0.1.89
title: Blockfrost.io ~ API Documentation Cardano » Accounts Cardano » Epochs 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.\n\n## Tokens\n\nAfter signing up on https://blockfrost.io, a `project_id` token is automatically generated for each project.\nHTTP header of your request MUST include this `project_id` in order to authenticate against Blockfrost servers.\n\n## Available networks\n\nAt the moment, you can use the following networks. Please, note that each network has its own `project_id`.\n\n<table>\n <tbody>\n <tr>\n <td>\n <b>Network</b>\n </td>\n <td>\n <b>Endpoint</b>\n </td>\n </tr>\n <tr>\n <td>Cardano mainnet</td>\n <td>\n <code>https://cardano-mainnet.blockfrost.io/api/v0</code>\n </td>\n </tr>\n <tr>\n <td>Cardano preprod</td>\n <td>\n <code>https://cardano-preprod.blockfrost.io/api/v0</code>\n </td>\n </tr>\n <tr>\n <td>Cardano preview</td>\n <td>\n <code>https://cardano-preview.blockfrost.io/api/v0</code>\n </td>\n </tr>\n <tr>\n <td>Midnight mainnet</td>\n <td>\n <code>https://midnight-mainnet.blockfrost.io/api/v0</code>\n </td>\n </tr>\n <tr>\n <td>InterPlanetary File System</td>\n <td>\n <code>https://ipfs.blockfrost.io/api/v0</code>\n </td>\n </tr>\n </tbody>\n</table>\n\n## Concepts\n\n* All endpoints return either a JSON object or an array.\n* Data is returned in *ascending* (oldest first, newest last) order, if not stated otherwise.\n * You might use the `?order=desc` query parameter to reverse this order.\n* By default, we return 100 results at a time. You have to use `?page=2` to list through the results.\n* All time and timestamp related fields (except `server_time`) are in seconds of UNIX time.\n* All amounts are returned in Lovelaces, where 1 ADA = 1 000 000 Lovelaces.\n* Addresses, accounts and pool IDs are in Bech32 format.\n* All values are case sensitive.\n* All hex encoded values are lower case.\n* Examples are not based on real data. Any resemblance to actual events is purely coincidental.\n* We allow to upload files up to 100MB of size to IPFS. This might increase in the future.\n* Only pinned IPFS files are counted towards the IPFS quota.\n* Non-pinned IPFS files are subject to regular garbage collection and will be removed unless pinned.\n* We allow maximum of 100 queued pins per IPFS user.\n\n## Errors\n\n### HTTP Status codes\n\nThe following are HTTP status code your application might receive when reaching Blockfrost endpoints and\nit should handle all of these cases.\n\n* HTTP `400` return code is used when the request is not valid.\n* HTTP `402` return code is used when the projects exceed their daily request limit.\n* HTTP `403` return code is used when the request is not authenticated.\n* HTTP `404` return code is used when the resource doesn't exist.\n* HTTP `418` return code is used when the user has been auto-banned for flooding too much after previously receiving error code `402` or `429`.\n* HTTP `425` return code is used in Cardano networks, when the user has submitted a transaction when the mempool is already full, not accepting new txs straight away.\n* HTTP `425` return code is used in IPFS network, when the user has submitted a pin when the pin queue is already full, not accepting new pins straight away.\n* HTTP `429` return code is used when the user has sent too many requests in a given amount of time and therefore has been rate-limited.\n* HTTP `500` return code is used when our endpoints are having a problem.\n\n### Error codes\n\nAn internal error code number is used for better indication of the error in question. It is passed using the following payload.\n\n```json\n{\n \"status_code\": 403,\n \"error\": \"Forbidden\",\n \"message\": \"Invalid project token.\"\n}\n```\n## Limits\n\nThere are two types of limits we are enforcing:\n\nThe first depends on your plan and is the number of request we allow per day. We defined the day from midnight to midnight of UTC time.\n\nThe second is rate limiting. We limit an end user, distinguished by IP address, to 10 requests per second. On top of that, we allow\neach user to send burst of 500 requests, which cools off at rate of 10 requests per second. In essence, a user is allowed to make another\nwhole burst after (currently) 500/10 = 50 seconds. E.g. if a user attempts to make a call 3 seconds after whole burst, 30 requests will be processed.\nWe believe this should be sufficient for most of the use cases. If it is not and you have a specific use case, please get in touch with us, and\nwe will make sure to take it into account as much as we can.\n\n## SDKs\n\nWe support a number of SDKs that will help you in developing your application on top of Blockfrost.\n\n<table>\n <tbody>\n <tr>\n <td><b>Programming language</b></td>\n <td><b>SDK</b></td>\n </tr>\n <tr>\n <td>JavaScript</td>\n <td>\n <a href=\"https://github.com/blockfrost/blockfrost-js\">blockfrost-js</a>\n </td>\n </tr>\n <tr>\n <td>Haskell</td>\n <td>\n <a href=\"https://github.com/blockfrost/blockfrost-haskell\">blockfrost-haskell</a>\n </td>\n </tr>\n <tr>\n <td>Python</td>\n <td>\n <a href=\"https://github.com/blockfrost/blockfrost-python\">blockfrost-python</a>\n </td>\n </tr>\n <tr>\n <td>Rust</td>\n <td>\n <a href=\"https://github.com/blockfrost/blockfrost-rust\">blockfrost-rust</a>\n </td>\n </tr>\n <tr>\n <td>Golang</td>\n <td>\n <a href=\"https://github.com/blockfrost/blockfrost-go\">blockfrost-go</a>\n </td>\n </tr>\n <tr>\n <td>Ruby</td>\n <td>\n <a href=\"https://github.com/blockfrost/blockfrost-ruby\">blockfrost-ruby</a>\n </td>\n </tr>\n <tr>\n <td>Java</td>\n <td>\n <a href=\"https://github.com/blockfrost/blockfrost-java\">blockfrost-java</a>\n </td>\n </tr>\n <tr>\n <td>Scala</td>\n <td>\n <a href=\"https://github.com/blockfrost/blockfrost-scala\">blockfrost-scala</a>\n </td>\n </tr>\n <tr>\n <td>Swift</td>\n <td>\n <a href=\"https://github.com/blockfrost/blockfrost-swift\">blockfrost-swift</a>\n </td>\n </tr>\n <tr>\n <td>Kotlin</td>\n <td>\n <a href=\"https://github.com/blockfrost/blockfrost-kotlin\">blockfrost-kotlin</a>\n </td>\n </tr>\n <tr>\n <td>Elixir</td>\n <td>\n <a href=\"https://github.com/blockfrost/blockfrost-elixir\">blockfrost-elixir</a>\n </td>\n </tr>\n <tr>\n <td>.NET</td>\n <td>\n <a href=\"https://github.com/blockfrost/blockfrost-dotnet\">blockfrost-dotnet</a>\n </td>\n </tr>\n <tr>\n <td>Arduino</td>\n <td>\n <a href=\"https://github.com/blockfrost/blockfrost-arduino\">blockfrost-arduino</a>\n </td>\n </tr>\n <tr>\n <td>PHP</td>\n <td>\n <a href=\"https://github.com/blockfrost/blockfrost-php\">blockfrost-php</a>\n </td>\n </tr>\n <tr>\n <td>Crystal</td>\n <td>\n <a href=\"https://github.com/blockfrost/blockfrost-crystal\">blockfrost-crystal</a>\n </td>\n </tr>\n </tbody>\n</table>\n\n\n## Midnight API\n\n\nThe Midnight Indexer API exposes a GraphQL API that enables clients to query and subscribe to blockchain data — blocks, transactions, contracts, and wallet-related events — indexed from the Midnight blockchain.\n\nAvailable networks: `mainnet`, `preprod`, `preview`\n\n| Service | URL | Protocol |\n|---------|-----|----------|\n| **Indexer HTTP API** | `https://midnight-{network}.blockfrost.io/api/v0` | HTTP POST (GraphQL) |\n| **Indexer Subscriptions API** | `wss://midnight-{network}.blockfrost.io/api/v0/ws` | WebSocket |\n| **Node RPC** | `https://rpc.midnight-{network}.blockfrost.io` | JSON-RPC |\n\n\nFor the full documentation — queries, mutations, subscriptions, authentication options, and examples — see the Midnight GraphQL API Reference:\n\n[](./midnight/)\n"
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 » Epochs
paths:
/epochs/latest:
get:
tags:
- Cardano » Epochs
summary: Latest epoch
description: Return the information about the latest, therefore current, epoch.
responses:
'200':
description: Return the data about the epoch
content:
application/json:
schema:
$ref: '#/components/schemas/epoch_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'
/epochs/latest/parameters:
get:
tags:
- Cardano » Epochs
summary: Latest epoch protocol parameters
description: Return the protocol parameters for the latest epoch.
responses:
'200':
description: Return the data about the epoch
content:
application/json:
schema:
$ref: '#/components/schemas/epoch_param_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'
/epochs/{number}:
get:
tags:
- Cardano » Epochs
summary: Specific epoch
description: Return the content of the requested epoch.
parameters:
- in: path
name: number
required: true
schema:
type: integer
description: Number of the epoch
example: 225
responses:
'200':
description: Return the epoch data.
content:
application/json:
schema:
$ref: '#/components/schemas/epoch_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'
/epochs/{number}/next:
get:
tags:
- Cardano » Epochs
summary: Listing of next epochs
description: Return the list of epochs following a specific epoch.
parameters:
- in: path
name: number
required: true
schema:
type: integer
description: Number of the requested epoch.
example: 225
- 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.
responses:
'200':
description: Return the data about the epoch
content:
application/json:
schema:
$ref: '#/components/schemas/epoch_content_array'
'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'
/epochs/{number}/previous:
get:
tags:
- Cardano » Epochs
summary: Listing of previous epochs
description: Return the list of epochs preceding a specific epoch.
parameters:
- in: path
name: number
required: true
schema:
type: integer
description: Number of the epoch
example: 225
- 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
responses:
'200':
description: Return the epoch data
content:
application/json:
schema:
$ref: '#/components/schemas/epoch_content_array'
'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'
/epochs/{number}/stakes:
get:
tags:
- Cardano » Epochs
summary: Stake distribution
description: Return the active stake distribution for the specified epoch.
parameters:
- in: path
name: number
required: true
schema:
type: integer
description: Number of the epoch
example: 225
- 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.
responses:
'200':
description: Return the data about the epoch
content:
application/json:
schema:
$ref: '#/components/schemas/epoch_stake_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'
/epochs/{number}/stakes/{pool_id}:
get:
tags:
- Cardano » Epochs
summary: Stake distribution by pool
description: Return the active stake distribution for the epoch specified by stake pool.
parameters:
- in: path
name: number
required: true
schema:
type: integer
description: Number of the epoch
example: 225
- in: path
required: true
name: pool_id
schema:
type: string
description: Stake pool ID to filter
example: pool1pu5jlj4q9w9jlxeu370a3c9myx47md5j5m2str0naunn2q3lkdy
- 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.
responses:
'200':
description: Return the data about the epoch
content:
application/json:
schema:
$ref: '#/components/schemas/epoch_stake_pool_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'
/epochs/{number}/blocks:
get:
tags:
- Cardano » Epochs
summary: Block distribution
description: Return the blocks minted for the epoch specified.
parameters:
- in: path
name: number
required: true
schema:
type: integer
description: Number of the epoch
example: 225
- 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: 'The ordering of items from the point of view of the blockchain,
not the page listing itself. By default, we return oldest first, newest last.
'
responses:
'200':
description: Return the data about the epoch
content:
application/json:
schema:
$ref: '#/components/schemas/epoch_block_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'
/epochs/{number}/blocks/{pool_id}:
get:
tags:
- Cardano » Epochs
summary: Block distribution by pool
description: Return the block minted for the epoch specified by stake pool.
parameters:
- in: path
name: number
required: true
schema:
type: integer
description: Number of the epoch
example: 225
- in: path
required: true
name: pool_id
schema:
type: string
description: Stake pool ID to filter
example: pool1pu5jlj4q9w9jlxeu370a3c9myx47md5j5m2str0naunn2q3lkdy
- 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: 'The ordering of items from the point of view of the blockchain,
not the page listing itself. By default, we return oldest first, newest last.
'
responses:
'200':
description: Return the data about the epoch
content:
application/json:
schema:
$ref: '#/components/schemas/epoch_block_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'
/epochs/{number}/parameters:
get:
tags:
- Cardano » Epochs
summary: Protocol parameters
description: Return the protocol parameters for the epoch specified.
parameters:
- in: path
name: number
required: true
schema:
type: integer
description: Number of the epoch
example: 225
responses:
'200':
description: Return the data about the epoch
content:
application/json:
schema:
$ref: '#/components/schemas/epoch_param_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'
components:
responses:
'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
'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
'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
'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
'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
schemas:
epoch_block_content:
type: array
items:
type: string
description: Hash of the block
example:
- d0fa315687e99ccdc96b14cc2ea74a767405d64427b648c470731a9b69e4606e
- 38bc6efb92a830a0ed22a64f979d120d26483fd3c811f6622a8c62175f530878
- f3258fcd8b975c061b4fcdcfcbb438807134d6961ec278c200151274893b6b7d
epoch_stake_pool_content:
type: array
items:
properties:
stake_address:
type: string
example: stake1u9l5q5jwgelgagzyt6nuaasefgmn8pd25c8e9qpeprq0tdcp0e3uk
description: Stake address
amount:
type: string
example: '4440295078'
description: Amount of active delegated stake in Lovelaces
required:
- stake_address
- amount
epoch_param_content:
type: object
properties:
epoch:
type: integer
example: 225
description: Epoch number
min_fee_a:
type: integer
example: 44
description: The linear factor for the minimum fee calculation for given epoch
min_fee_b:
type: integer
example: 155381
description: The constant factor for the minimum fee calculation
max_block_size:
type: integer
example: 65536
description: Maximum block body size in Bytes
max_tx_size:
type: integer
example: 16384
description: Maximum transaction size
max_block_header_size:
type: integer
example: 1100
description: Maximum block header size
key_deposit:
type: string
example: '2000000'
description: The amount of a key registration deposit in Lovelaces
pool_deposit:
type: string
example: '500000000'
description: The amount of a pool registration deposit in Lovelaces
e_max:
type: integer
example: 18
description: Epoch bound on pool retirement
n_opt:
type: integer
example: 150
description: Desired number of pools
a0:
type: number
example: 0.3
description: Pool pledge influence
rho:
type: number
example: 0.003
description: Monetary expansion
tau:
type: number
example: 0.2
description: Treasury expansion
decentralisation_param:
type: number
example: 0.5
description: Percentage of blocks produced by federated nodes
extra_entropy:
type:
- string
- 'null'
example: null
description: Seed for extra entropy
protocol_major_ver:
type: integer
example: 2
description: Accepted protocol major version
protocol_minor_ver:
type: integer
example: 0
description: Accepted protocol minor version
min_utxo:
type: string
example: '1000000'
description: Minimum UTXO value. Use `coins_per_utxo_size` for Alonzo and later eras
deprecated: true
min_pool_cost:
type: string
example: '340000000'
description: Minimum stake cost forced on the pool
nonce:
type: string
example: 1a3be38bcbb7911969283716ad7aa550250226b76a61fc51cc9a9a35d9276d81
description: Epoch number only used once
cost_models:
additionalProperties: true
type:
- object
- 'null'
deprecated: true
example:
PlutusV1:
addInteger-cpu-arguments-intercept: 197209
addInteger-cpu-arguments-slope: 0
PlutusV2:
addInteger-cpu-arguments-intercept: 197209
addInteger-cpu-arguments-slope: 0
description: Cost models parameters for Plutus Core scripts. Deprecated, use `cost_models_raw` instead.
cost_models_raw:
additionalProperties: true
type:
- object
- 'null'
example:
PlutusV1:
- 100788
- 420
- 1
- 1
- 1000
- 173
- 0
- 1
- 1000
- 59957
- 4
- 1
- 11183
- 32
- 201305
- 8356
- '...'
PlutusV2:
- 100788
- 420
- 1
- 1
- 1000
- 173
- 0
- 1
- 1000
- 59957
- 4
- 1
- 11183
- 32
- 201305
- 8356
- '...'
PlutusV3:
- 100788
- 420
- 1
- 1
- 1000
- 173
- 0
- 1
- 1000
- 59957
- 4
- 1
- 11183
- 32
- 201305
- 8356
- '...'
description: Cost models parameters for Plutus Core scripts in raw list form
price_mem:
type:
- number
- 'null'
example: 0.0577
description: The per word cost of script memory usage
price_step:
type:
- number
- 'null'
example: 7.21e-05
description: The cost of script execution step usage
max_tx_ex_mem:
type:
- string
- 'null'
example: '10000000'
description: The maximum number of execution memory allowed to be used in a single transaction
max_tx_ex_steps:
type:
- string
- 'null'
example: '10000000000'
description: The maximum number of execution steps allowed to be used in a single transaction
max_block_ex_mem:
type:
- string
- 'null'
example: '50000000'
description: The maximum number of execution memory allowed to be used in a single block
max_block_ex_steps:
type:
- string
- 'null'
example: '40000000000'
description: The maximum number of execution steps allowed to be used in a single block
max_val_size:
type:
- string
- 'null'
example: '5000'
description: The maximum Val size
collateral_percent:
type:
- integer
- 'null'
example: 150
description: The percentage of the transactions fee which must be provided as collateral when including non-native scripts
max_collateral_inputs:
type:
- integer
- 'null'
example: 3
description: Th
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# Full source: https://raw.githubusercontent.com/api-evangelist/cardano/refs/heads/main/openapi/cardano-cardano-epochs-api-openapi.yml