Polkadot

Polkadot ahm API

Asset Hub Migration information

GitHub OpenAPI

Operations 2

GET /v1/ahm-info Asset Hub Migration info #
GET /ahm-info Get Asset Hub Migration information. #

Documentation

📖
Documentation
https://support.subscan.io/
📖
RateLimits
https://raw.githubusercontent.com/api-evangelist/polkadot/refs/heads/main/rate-limits/subscan.yml
📖
Documentation
https://docs.polkadot.com/chain-interactions/query-data/query-rest/
📖
Documentation
https://github.com/paritytech/polkadot-rest-api

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/polkadot/refs/heads/main/openapi/polkadot-ahm-api-openapi.yml

SDKs

📦
GitHubRepository
https://github.com/paritytech/substrate-api-sidecar
📦
GitHubRepository
https://github.com/paritytech/polkadot-rest-api

Other Resources

🔗
PostmanCollection
https://documenter.getpostman.com/view/1618960/TVCe1oRU
🔗
Plans
https://raw.githubusercontent.com/api-evangelist/polkadot/refs/heads/main/plans/subscan.yml
🔗
FinOps
https://raw.githubusercontent.com/api-evangelist/polkadot/refs/heads/main/finops/subscan.yml

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OpenAPI Specification

polkadot-ahm-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  title: Polkadot Ahm API
  version: '1.0'
  description: 'Operations tagged ahm across 2 of this provider''s published API definitions: polkadot-rest-api-openapi.json, substrate-api-sidecar-openapi.yaml. Each path carries the servers of the definition it was published in.'
servers:
- url: http://localhost:8080/v1
  description: Localhost
- url: https://polkadot-public-sidecar.parity-chains.parity.io/
  description: Polkadot Parity public sidecar
- url: https://kusama-public-sidecar.parity-chains.parity.io/
  description: Kusama Parity public sidecar
- url: https://polkadot-asset-hub-public-sidecar.parity-chains.parity.io/
  description: Polkadot Asset Hub Parity public sidecar
- url: https://kusama-asset-hub-public-sidecar.parity-chains.parity.io/
  description: Kusama Asset Hub Parity public sidecar
- url: http://localhost:8080
  description: Localhost
tags:
- name: ahm
  description: Asset Hub Migration information
paths:
  /v1/ahm-info:
    get:
      tags:
      - ahm
      summary: Asset Hub Migration info
      description: Returns information about the Asset Hub migration, including start and end blocks for both relay chain and Asset Hub.
      operationId: ahm_info
      responses:
        '200':
          description: AHM migration boundaries
          content:
            application/json:
              schema:
                type: object
        '404':
          description: No migration data available
    servers:
    - url: http://localhost:8080/v1
      description: Localhost
  /ahm-info:
    get:
      tags:
      - ahm
      summary: Get Asset Hub Migration information.
      description: Returns information about Asset Hub Migration (AHM) including migration start and end blocks for both relay chain and Asset Hub. The endpoint automatically detects whether you're connected to a relay chain or Asset Hub and provides relevant migration data. Returns static migration boundaries for known networks or queries on-chain migration pallets for dynamic information.
      operationId: getAhmInfo
      responses:
        '200':
          description: Successfully retrieved Asset Hub Migration information
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AhmInfo'
        '400':
          description: Invalid chain specName or missing migration pallets
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
    servers:
    - url: https://polkadot-public-sidecar.parity-chains.parity.io/
      description: Polkadot Parity public sidecar
    - url: https://kusama-public-sidecar.parity-chains.parity.io/
      description: Kusama Parity public sidecar
    - url: https://polkadot-asset-hub-public-sidecar.parity-chains.parity.io/
      description: Polkadot Asset Hub Parity public sidecar
    - url: https://kusama-asset-hub-public-sidecar.parity-chains.parity.io/
      description: Kusama Asset Hub Parity public sidecar
    - url: http://localhost:8080
      description: Localhost
components:
  schemas:
    Error:
      type: object
      properties:
        code:
          type: number
        message:
          type: string
        stack:
          type: string
        level:
          type: string
    AhmInfo:
      type: object
      description: Asset Hub Migration information including migration boundaries for both relay chain and Asset Hub.
      properties:
        relay:
          type: object
          description: Relay chain migration information
          properties:
            startBlock:
              type:
              - integer
              - 'null'
              description: Block number when relay chain migration started, or null if not available
              format: unsignedInteger
            endBlock:
              type:
              - integer
              - 'null'
              description: Block number when relay chain migration ended, or null if not available
              format: unsignedInteger
        assetHub:
          type: object
          description: Asset Hub migration information
          properties:
            startBlock:
              type:
              - integer
              - 'null'
              description: Block number when Asset Hub migration started, or null if not available
              format: unsignedInteger
            endBlock:
              type:
              - integer
              - 'null'
              description: Block number when Asset Hub migration ended, or null if not available
              format: unsignedInteger
      example:
        relay:
          startBlock: 26041702
          endBlock: 26071771
        assetHub:
          startBlock: 11716733
          endBlock: 11736597
x-refined-from:
- polkadot-rest-api-openapi.json
- substrate-api-sidecar-openapi.yaml