Path Parameters

metadataVersion

string

REQUIRED

The version of metadata. The input is expected in a vX format, where X represents the version number (e.g. v14, v15). By default, metadata is outputted in 'json' format, unless the metadata query parameter is provided, in which case it can be either in 'json' or 'scale' format.

Query Parameters

at

string

Block at which to retrieve the transaction construction material.

metadata

string

Specifies the format of the metadata to be returned. Accepted values are 'json', and 'scale'. 'json' being the decoded metadata, and 'scale' being the SCALE encoded metadata.

Returns

at

object

An object containing information about the state

hash

string

The block's hash

height

string

The block's height

genesisHash

string

The hash of the genesis block

chainName

string

The name of the blockchain network

specName

string

The name of the blockchain specification

specVersion

string

The version number of the blockchain specification being used

txVersion

string

The version number of the transaction format, ensuring compatibility with different versions of the blockchain

magicNumber

string

(Optional) A unique identifier for the metadata format version

metadata

object

(Optional) The metadata object which contains the following fields:

v14

object

The v14 object which contains the following fields:

lookup

object

Provides a mapping and definition of types used within the runtime

types

array

A list of types defining the data structures used in the blockchain

id

string

Identifier for the specific type

type

object

Describes the type's structure and attributes

path

string

Specifies the module path to the type

params

array

Lists any parameters associated with the type

def

object

The def object which contains the following fields:

composite

object

The composite object which contains the following fields:

fields

array

Describes the individual fields within the composite type

name

string

The name of the field

type

string

The type identifier of the field

typeName

string

The human-readable name of the field's type

docs

array

The documentation or comments about the field

docs

array

The documentation or comments about the type

pallets

array

Lists the runtime modules (pallets) and their associated components

name

string

The name of the pallet

storage

object

The storage object which contains the following fields:

prefix

string

The prefix used for storage items in this pallet

items

array

Lists the storage items within the pallet

name

string

The name of the storage item

modifier

string

Specifies the modifier type

type

object

The type object which contains the following fields:

map

object

The map object which contains the following fields:

hashers

string

List of hash functions used for the key

key

string

The type identifier for the key

value

string

The type identifier for the value

fallback

string

Default value used when no value is stored

docs

string

Documentation or comments about the storage item

calls

object

Describes the callable functions provided by the pallet

type

string

The type identifier for the calls

events

object

Describes the events emitted by the pallet

type

string

The type identifier for the events

constants

array

Lists the constant values defined within the pallet

name

string

The name of the constant

type

string

The type identifier for the constant

value

object

The value object which contains the following fields:

baseBlock

object

The baseBlock object which contains the following fields:

refTime

string

The reference time for the base block

proofSize

string

The size of the proof for the base block

maxBlock

object

The maxBlock object which contains the following fields:

refTime

string

The reference time for the maximum block

proofSize

string

The size of the proof for the maximum block.

perClass

object

The perClass object which contains the following fields:

normal

object

The normal object which contains the following fields:

baseExtrinsic

object

The baseExtrinsic object which contains the following fields:

refTime

string

The reference time for the base extrinsic

proofSize

string

The proof size for the base extrinsic

maxExtrinsic

object

The maxExtrinsic object which contains the following fields:

refTime

string

The reference time for the maximum extrinsic

proofSize

string

The proof size for the maximum total

maxTotal

object

The maxTotal object which contains the following fields:

refTime

string

The reference time for the maximum total

proofSize

string

The proof size for the maximum total

reserved

object

The reserved object which contains the following fields:

refTime

string

The reference time for the reserved total

proofSize

string

The proof size for the reserved total

operational

object

The operational object which contains the following fields:

baseExtrinsic

object

The baseExtrinsic object which contains the following fields:

refTime

string

The reference time for the baseExtrinsic total

proofSize

string

The proof size for the baseExtrinsic total

maxExtrinsic

object

The maxExtrinsic object which contains the following fields:

refTime

string

The reference time for the maxExtrinsic total

proofSize

string

The proof size for the maxExtrinsic total

maxTotal

object

The maxTotal object which contains the following fields:

refTime

string

The reference time for the maxTotal

proofSize

string

The proof size for the maxTotal

reserved

object

The reserved object which contains the following fields:

refTime

string

The reference time for the reserved total

proofSize

string

The proof size for the reserved total

mandatory

object

The mandatory object which contains the following fields:

baseExtrinsic

object

The baseExtrinsic object which contains the following fields:

refTime

string

The reference time for the baseExtrinsic total

proofSize

string

The proof size for the baseExtrinsic total

maxExtrinsic

object

The maxExtrinsic object which contains the following fields:

refTime

string

The reference time for the maxExtrinsic total

proofSize

string

The proof size for the maxExtrinsic total

maxTotal

object

The maxTotal object which contains the following fields:

refTime

string

The reference time for the maxTotal

proofSize

string

The proof size for the maxTotal

reserved

object

The reserved object which contains the following fields:

refTime

string

The reference time for the reserved total

proofSize

string

The proof size for the reserved total

docs

string

Documentation or comments about the constant

errors

object

The errors object which contains the following fields:

type

string

The type identifier for the errors

index

string

The index or identifier of the pallet within the runtime

extrinsic

object

The extrinsic object which contains the following fields:

type

string

The type identifier for the extrinsics

version

string

The version of the extrinsic format

signedExtensions

array

Lists additional checks or data required for signed extrinsics

identifier

string

The name of the signed extension

type

string

The type identifier for the signed extension

additionalSigned

string

Additional data required by the signed extension

type

string

The type identifier for the metadata structure

apis

array

An array containing details about different APIs implemented in the runtime

name

string

The name of the API or method

methods

array

An array containing the details of the methods available within the API

name

string

The name of the method within the API

inputs

array

An array of objects specifying the inputs required by the method

output

string

A string indicating the output type or identifier returned by the method

docs

array

An array of strings providing documentation or descriptions specific to the method

docs

array

An array of strings providing documentation or descriptions specific to the api

outerEnums

object

An object defining mappings for outer enums used in the runtime

callType

string

The type identifier for runtime calls

eventType

string

The type identifier for runtime events

errorType

string

The type identifier for runtime errors

custom

object

The custom object which contains the following fields:

map

object

A custom key-value mapping

Request

1
# AssetHub (default) - for versioned transaction material from AssetHub parachain
2
curl --location 'https://docs-demo.dot-mainnet.quiknode.pro/transaction/material/v15' \
3
--header 'Accept: application/json'
4

5
# Polkadot Relaychain - for versioned transaction material from Relaychain (requires /rc prefix)
6
curl --location 'https://docs-demo.dot-mainnet.quiknode.pro/rc/transaction/material/v15' \
7
--header 'Accept: application/json'

1
# AssetHub (default) - for versioned transaction material from AssetHub parachain
2
curl --location 'https://docs-demo.dot-mainnet.quiknode.pro/transaction/material/v15' \
3
--header 'Accept: application/json'
4

5
# Polkadot Relaychain - for versioned transaction material from Relaychain (requires /rc prefix)
6
curl --location 'https://docs-demo.dot-mainnet.quiknode.pro/rc/transaction/material/v15' \
7
--header 'Accept: application/json'

1
// For Polkadot Relaychain access, add '/rc' after https://docs-demo.dot-mainnet.quiknode.pro/ (e.g., https://docs-demo.dot-mainnet.quiknode.pro/rc/accounts/...)
2

3
const myHeaders = new Headers();
4
myHeaders.append("Accept", "application/json");
5

6
const requestOptions = {
7
  method: "GET",
8
  headers: myHeaders,
9
  redirect: "follow"
10
};
11

12
  fetch("https://docs-demo.dot-mainnet.quiknode.pro/transaction/material/v15", requestOptions)
13
    .then((response) => response.text())
14
    .then((result) => console.log(result))
15
    .catch((error) => console.error(error));
16

1
// For Polkadot Relaychain access, add '/rc' after https://docs-demo.dot-mainnet.quiknode.pro/ (e.g., https://docs-demo.dot-mainnet.quiknode.pro/rc/accounts/...)
2

3
const myHeaders = new Headers();
4
myHeaders.append("Accept", "application/json");
5

6
const requestOptions = {
7
  method: "GET",
8
  headers: myHeaders,
9
  redirect: "follow"
10
};
11

12
  fetch("https://docs-demo.dot-mainnet.quiknode.pro/transaction/material/v15", requestOptions)
13
    .then((response) => response.text())
14
    .then((result) => console.log(result))
15
    .catch((error) => console.error(error));
16

1
import requests
2
# For Polkadot Relaychain access, add '/rc' after https://docs-demo.dot-mainnet.quiknode.pro/ (e.g., https://docs-demo.dot-mainnet.quiknode.pro/rc/accounts/...)
3

4

5
url = "https://docs-demo.dot-mainnet.quiknode.pro/transaction/material/v15"
6
payload = {}
7
headers = {
8
  'Accept': 'application/json'
9
}
10

11
response = requests.request("GET", url, headers=headers, data=payload)
12
print(response.text)
13

1
import requests
2
# For Polkadot Relaychain access, add '/rc' after https://docs-demo.dot-mainnet.quiknode.pro/ (e.g., https://docs-demo.dot-mainnet.quiknode.pro/rc/accounts/...)
3

4

5
url = "https://docs-demo.dot-mainnet.quiknode.pro/transaction/material/v15"
6
payload = {}
7
headers = {
8
  'Accept': 'application/json'
9
}
10

11
response = requests.request("GET", url, headers=headers, data=payload)
12
print(response.text)
13

1
require "uri"
2
require "net/http"
3
# For Polkadot Relaychain access, add '/rc' after https://docs-demo.dot-mainnet.quiknode.pro/ (e.g., https://docs-demo.dot-mainnet.quiknode.pro/rc/accounts/...)
4

5

6
url = URI("https://docs-demo.dot-mainnet.quiknode.pro/transaction/material/v15")
7

8
https = Net::HTTP.new(url.host, url.port)
9
https.use_ssl = true
10

11
request = Net::HTTP::Get.new(url)
12

13
response = https.request(request)
14
puts response.read_body
15

1
require "uri"
2
require "net/http"
3
# For Polkadot Relaychain access, add '/rc' after https://docs-demo.dot-mainnet.quiknode.pro/ (e.g., https://docs-demo.dot-mainnet.quiknode.pro/rc/accounts/...)
4

5

6
url = URI("https://docs-demo.dot-mainnet.quiknode.pro/transaction/material/v15")
7

8
https = Net::HTTP.new(url.host, url.port)
9
https.use_ssl = true
10

11
request = Net::HTTP::Get.new(url)
12

13
response = https.request(request)
14
puts response.read_body
15

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