Polkadot

Polkadot ahm API

Asset Hub Migration information

Documentation GitHub OpenAPI

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this

find_apisBrowse and filter every API in the catalog.
get_api_artifactsOne API's artifacts, grouped by type.
get_openapiThe primary OpenAPI for this API.
find_similar_apisAPIs that look like this one.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools

Call it yourself

curl for this page

This API

curl "https://apis.io/api/v1/apis/polkadot-ahm-api"

All apis

curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

openapi: 3.1.0
info:
  title: Polkadot REST Account ahm API
  description: High-performance Rust REST API for Substrate/Polkadot blockchain data. Drop-in replacement for substrate-api-sidecar.
  contact:
    url: https://github.com/paritytech/polkadot-rest-api
  license:
    name: GPL-3.0-or-later
  version: 0.1.3
servers:
- url: http://localhost:8080/v1
  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
  /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'
components:
  schemas:
    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
              nullable: true
              description: Block number when relay chain migration started, or null if not available
              format: unsignedInteger
            endBlock:
              type: integer
              nullable: true
              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
              nullable: true
              description: Block number when Asset Hub migration started, or null if not available
              format: unsignedInteger
            endBlock:
              type: integer
              nullable: true
              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
    Error:
      type: object
      properties:
        code:
          type: number
        message:
          type: string
        stack:
          type: string
        level:
          type: string

Polkadot ahm API

Documentation

Specifications

SDKs

Other Resources