Path Parameters

Query Parameters

at

string

Block at which to retrieve the metadata at.

Returns

magicNumber

string

A unique identifier for the metadata format version

metadata

object

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 | array

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 | null

The name of the field

type

string

The type identifier of the field

typeName

string | null

The human-readable name of the field's type, or null when not specified

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 | null

(Optional) The storage object which contains the following fields, or null when the pallet defines no storage:

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

array

Storage map key hashers

key

string

The type identifier for the key

value

string

The type identifier for the value

plain

string

Type identifier when the storage item is a plain value (not a map)

fallback

string

Default value used when no value is stored

docs

array

Documentation strings about the storage item

calls

object | null

(Optional) Describes the callable functions provided by the pallet

type

string

The type identifier for the calls

events

object | null

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

string | 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

array

Documentation strings about the constant

errors

object | null

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

Request

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

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

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

5
# Polkadot Relaychain - for runtime metadata from Relaychain (requires /rc prefix)
6
curl --location 'https://docs-demo.dot-mainnet.quiknode.pro/rc/runtime/metadata' \
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/runtime/metadata", 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/runtime/metadata", 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/runtime/metadata"
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/runtime/metadata"
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/runtime/metadata")
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/runtime/metadata")
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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