Cardano Cardano » Governance API
The Cardano » Governance API from Cardano — 20 operation(s) for cardano » governance.
OpenAPI Specification
openapi: 3.0.3
info:
version: 0.1.89
title: Blockfrost.io ~ API Documentation Cardano » Accounts Cardano » Governance 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 » Governance
paths:
/governance/committee:
get:
tags:
- Cardano » Governance
summary: Constitutional committee
description: 'Information about the currently active constitutional committee
When `is_dissolved` is `true`, the committee has been removed by an enacted `NoConfidence` governance action; `quorum` and `members` still describe the last seated committee for historical reference.
'
responses:
'200':
description: Return the active constitutional committee
content:
application/json:
schema:
$ref: '#/components/schemas/committee'
'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'
/governance/committee/votes:
get:
tags:
- Cardano » Governance
summary: Constitutional committee votes
description: History of all votes cast by constitutional committee members across all committees (current and past). Not scoped to the currently active committee.
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: '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 constitutional committee votes
content:
application/json:
schema:
$ref: '#/components/schemas/committee_votes'
'400':
$ref: '#/components/responses/400'
'403':
$ref: '#/components/responses/403'
'418':
$ref: '#/components/responses/418'
'429':
$ref: '#/components/responses/429'
'500':
$ref: '#/components/responses/500'
/governance/committee/{cc_id}/votes:
get:
tags:
- Cardano » Governance
summary: Constitutional committee member votes
description: 'Votes cast under a given constitutional committee credential. Accepts both the CIP-129 hot bech32 (`cc_hot1...`) and the cold bech32 (`cc_cold1...`).
When queried by a cold credential, this returns votes cast by any hot key that the cold key has authorized over time (so the result aggregates across hot-key rotations).'
parameters:
- in: path
name: cc_id
required: true
schema:
type: string
description: CIP-129 bech32 committee credential (`cc_hot1...` or `cc_cold1...`).
example: cc_hot1qf4xq9mlra5j68w8zjz2lvf3kc3rtsdtu98ka7zx4u6jvqyy39ww0
- 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 votes for the given committee credential
content:
application/json:
schema:
$ref: '#/components/schemas/committee_votes'
'400':
$ref: '#/components/responses/400'
'403':
$ref: '#/components/responses/403'
'418':
$ref: '#/components/responses/418'
'429':
$ref: '#/components/responses/429'
'500':
$ref: '#/components/responses/500'
/governance/dreps:
get:
tags:
- Cardano » Governance
summary: Delegate Representatives (DReps)
description: Return the information about Delegate Representatives (DReps)
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: 'The ordering of items. Direction applied to whichever sort key is selected by `order_by`.
By default, when sorting by registration order, we return oldest first, newest last.
'
- in: query
name: order_by
required: false
schema:
type: string
enum:
- amount
description: 'Optional sort key. When omitted, DReps are ordered by their internal registration order
(the current default). Set to `amount` to sort by voting power.
'
- in: query
name: retired
required: false
schema:
type: boolean
description: 'Optional filter. When `true`, only returns DReps that have been deregistered.
When `false`, only returns DReps that are currently registered.
When omitted, both are returned.
'
- in: query
name: expired
required: false
schema:
type: boolean
description: 'Optional filter. When `true`, only returns DReps that have been inactive for longer than
the `drep_activity` protocol parameter. When `false`, only returns DReps that are not
expired. When omitted, both are returned.
'
responses:
'200':
description: Paginated array with the Delegate Representatives (DReps) data
content:
application/json:
schema:
$ref: '#/components/schemas/dreps'
'400':
$ref: '#/components/responses/400'
'403':
$ref: '#/components/responses/403'
'418':
$ref: '#/components/responses/418'
'429':
$ref: '#/components/responses/429'
'500':
$ref: '#/components/responses/500'
/governance/dreps/{drep_id}:
get:
tags:
- Cardano » Governance
summary: Specific DRep
description: DRep information.
parameters:
- in: path
name: drep_id
required: true
schema:
type: string
description: Bech32 or hexadecimal DRep ID.
example: drep15cfxz9exyn5rx0807zvxfrvslrjqfchrd4d47kv9e0f46uedqtc
responses:
'200':
description: Return the DRep information content
content:
application/json:
schema:
$ref: '#/components/schemas/drep'
'400':
$ref: '#/components/responses/400'
'403':
$ref: '#/components/responses/403'
'418':
$ref: '#/components/responses/418'
'429':
$ref: '#/components/responses/429'
'500':
$ref: '#/components/responses/500'
/governance/dreps/{drep_id}/delegators:
get:
tags:
- Cardano » Governance
summary: DRep delegators
description: List of Drep delegators.
parameters:
- in: path
name: drep_id
required: true
schema:
type: string
description: Bech32 or hexadecimal drep ID.
example: drep1mvdu8slennngja7w4un6knwezufra70887zuxpprd64jxfveahn
- 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 DRep delegations
content:
application/json:
schema:
$ref: '#/components/schemas/drep_delegators'
'400':
$ref: '#/components/responses/400'
'403':
$ref: '#/components/responses/403'
'418':
$ref: '#/components/responses/418'
'429':
$ref: '#/components/responses/429'
'500':
$ref: '#/components/responses/500'
/governance/dreps/{drep_id}/metadata:
get:
tags:
- Cardano » Governance
summary: DRep metadata
description: DRep metadata information.
parameters:
- in: path
name: drep_id
required: true
schema:
type: string
description: Bech32 or hexadecimal DRep ID.
example: drep15cfxz9exyn5rx0807zvxfrvslrjqfchrd4d47kv9e0f46uedqtc
responses:
'200':
description: Return the DRep metadata content.
content:
application/json:
schema:
$ref: '#/components/schemas/drep_metadata'
'400':
$ref: '#/components/responses/400'
'403':
$ref: '#/components/responses/403'
'418':
$ref: '#/components/responses/418'
'429':
$ref: '#/components/responses/429'
'500':
$ref: '#/components/responses/500'
/governance/dreps/{drep_id}/updates:
get:
tags:
- Cardano » Governance
summary: DRep updates
description: List of certificate updates to the DRep.
parameters:
- in: path
name: drep_id
required: true
schema:
type: string
description: Bech32 or hexadecimal DRep ID.
example: drep15cfxz9exyn5rx0807zvxfrvslrjqfchrd4d47kv9e0f46uedqtc
- 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 Drep updates history
content:
application/json:
schema:
$ref: '#/components/schemas/drep_updates'
'400':
$ref: '#/components/responses/400'
'403':
$ref: '#/components/responses/403'
'418':
$ref: '#/components/responses/418'
'429':
$ref: '#/components/responses/429'
'500':
$ref: '#/components/responses/500'
/governance/dreps/{drep_id}/votes:
get:
tags:
- Cardano » Governance
summary: DRep votes
description: History of Drep votes.
parameters:
- in: path
name: drep_id
required: true
schema:
type: string
description: Bech32 or hexadecimal drep ID.
example: drep1mvdu8slennngja7w4un6knwezufra70887zuxpprd64jxfveahn
- 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 DRep votes
content:
application/json:
schema:
$ref: '#/components/schemas/drep_votes'
'400':
$ref: '#/components/responses/400'
'403':
$ref: '#/components/responses/403'
'418':
$ref: '#/components/responses/418'
'429':
$ref: '#/components/responses/429'
'500':
$ref: '#/components/responses/500'
/governance/proposals:
get:
tags:
- Cardano » Governance
summary: Proposals
description: Return the information about Proposals
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: '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.
Ordering in this case is based on the time of the first mint transaction.
'
responses:
'200':
description: Paginated array with the proposal data
content:
application/json:
schema:
$ref: '#/components/schemas/proposals'
'400':
$ref: '#/components/responses/400'
'403':
$ref: '#/components/responses/403'
'418':
$ref: '#/components/responses/418'
'429':
$ref: '#/components/responses/429'
'500':
$ref: '#/components/responses/500'
/governance/proposals/{tx_hash}/{cert_index}:
get:
tags:
- Cardano » Governance
summary: Specific proposal
description: Proposal information.
parameters:
- in: path
name: tx_hash
required: true
schema:
type: string
description: Transaction hash.
example: 2dd15e0ef6e6a17841cb9541c27724072ce4d4b79b91e58432fbaa32d9572531
- in: path
name: cert_index
required: true
schema:
type: integer
description: Index of the certificate within the proposal transaction.
example: 1
responses:
'200':
description: Return the proposal information content
content:
application/json:
schema:
$ref: '#/components/schemas/proposal'
'400':
$ref: '#/components/responses/400'
'403':
$ref: '#/components/responses/403'
'418':
$ref: '#/components/responses/418'
'429':
$ref: '#/components/responses/429'
'500':
$ref: '#/components/responses/500'
/governance/proposals/{tx_hash}/{cert_index}/parameters:
get:
tags:
- Cardano » Governance
summary: Specific parameters proposal
description: Parameters proposal details.
parameters:
- in: path
name: tx_hash
required: true
schema:
type: string
description: Transaction hash.
example: 2dd15e0ef6e6a17841cb9541c27724072ce4d4b79b91e58432fbaa32d9572531
- in: path
name: cert_index
required: true
schema:
type: integer
description: Index of the certificate within the proposal transaction.
example: 1
responses:
'200':
description: Return the proposal parameters content
content:
application/json:
schema:
$ref: '#/components/schemas/proposal_parameters'
'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'
/governance/proposals/{tx_hash}/{cert_index}/withdrawals:
get:
tags:
- Cardano » Governance
summary: Specific withdrawals proposal
description: Withdrawal proposal details.
parameters:
- in: path
name: tx_hash
required: true
schema:
type: string
description: Transaction hash.
example: 2dd15e0ef6e6a17841cb9541c27724072ce4d4b79b91e58432fbaa32d9572531
- in: path
name: cert_index
required: true
schema:
type: integer
description: Index of the certificate within the proposal transaction.
example: 1
- 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 proposal withdrawals content
content:
application/json:
schema:
$ref: '#/components/schemas/proposal_withdrawals'
'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'
/governance/proposals/{tx_hash}/{cert_index}/votes:
get:
tags:
- Cardano » Governance
summary: Proposal votes
description: History of Proposal votes.
parameters:
- in: path
name: tx_hash
required: true
schema:
type: string
description: Transaction hash.
example: 2dd15e0ef6e6a17841cb9541c27724072ce4d4b79b91e58432fbaa32d9572531
- in: path
name: cert_index
required: true
schema:
type: integer
description: Index of the certificate within the proposal transaction.
example: 1
- 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 Proposal votes
content:
application/json:
schema:
$ref: '#/components/schemas/proposal_votes'
'400':
$ref: '#/components/responses/400'
'403':
$ref: '#/components/responses/403'
'418':
$ref: '#/components/responses/418'
'429':
$ref: '#/components/responses/429'
'500':
$ref: '#/components/responses/500'
/governance/proposals/{tx_hash}/{cert_index}/metadata:
get:
tags:
- Cardano » Governance
summary: Specific proposal metadata
description: 'Proposal metadata information.
If this endpoint returns `404` or empty metadata for a known proposal, the off-chain metadata could not be fetched (e.g. unreachable URL or hash mismatch). Use the [`/governance/proposals/{gov_action_id}/metadata`](#tag/cardano--governance/GET/governance/proposals/{gov_action_id}/metadata) variant instead — it always returns the anchor `url` and `hash` along with an `error` object describing the fetch failure, so you can retrieve the metadata manually if needed.
'
parameters:
- in: path
name: tx_hash
required: true
schema:
type: string
description: Transa
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