Arkham

Arkham Cluster API

The Cluster API from Arkham — 1 operation(s) for cluster.

Documentation GitHub OpenAPI

Operations 1

GET /cluster/{id}/summary Get cluster summary statistics #

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/arkham-cluster-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: 3.2.0
info:
  title: Arkham Intel Analytics Cluster API
  version: 1.1.0
servers:
- url: https://api.arkm.com
  description: Base URL declared by the provider in apis.yml (roadmap#122).
tags:
- name: Cluster
paths:
  /cluster/{id}/summary:
    get:
      summary: Get cluster summary statistics
      description: 'Returns summary statistics for the specified cluster, including:

        - Total number of unique addresses in the cluster

        - Total balance in USD

        - Total transaction volume in USD

        - First and last transaction timestamps


        Clusters are groups of addresses that have been linked together through on-chain heuristics (e.g., Bitcoin input clustering).


        To find a cluster ID, look up an address with GET /intelligence/address_enriched/{address} and read its clusterIds field.'
      operationId: GetClusterSummary
      parameters:
      - name: id
        in: path
        description: The ID of the cluster to summarize.
        required: true
        schema:
          type: string
          description: The ID of the cluster to summarize.
          example: 00000002aae817c1a0d2ec3c91ede74c64c92c83658decdad52b591451948d75a9ca
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ClusterSummary'
        '400':
          description: Bad Request
        '500':
          description: Internal Server Error
      tags:
      - Cluster
components:
  schemas:
    ClusterSummary:
      required:
      - clusterId
      - numAddresses
      - volumeUsd
      - balanceUsd
      - firstTx
      - lastTx
      type: object
      properties:
        balanceUsd:
          type: number
          example: 270448104.02
        clusterId:
          type: string
          example: 00000002aae817c1a0d2ec3c91ede74c64c92c83658decdad52b591451948d75a9ca
        firstTx:
          type:
          - string
          - 'null'
          format: date-time
          example: '2018-11-12T14:22:37Z'
        lastTx:
          type:
          - string
          - 'null'
          format: date-time
          example: '2026-06-19T00:58:41Z'
        numAddresses:
          type: integer
          example: 1894908
        volumeUsd:
          type: number
          example: 1782634995673.44
      example:
        balanceUsd: 270448104.02
        clusterId: 00000002aae817c1a0d2ec3c91ede74c64c92c83658decdad52b591451948d75a9ca
        firstTx: '2018-11-12T14:22:37Z'
        lastTx: '2026-06-19T00:58:41Z'
        numAddresses: 1894908
        volumeUsd: 1782634995673.44