openapi: 3.0.3
info:
  title: Aleo Node REST Blocks Chain API
  description: The public REST API exposed by Aleo network nodes (snarkOS), served through Provable's public gateway at api.explorer.provable.com. It provides read access to on-chain state — the latest block height/hash/state root, blocks and their transactions, deployed programs and their mappings, and the current validator committee — plus a broadcast endpoint for submitting signed transactions to the network. The API is unauthenticated and read-only for query endpoints. Endpoints were verified live against the mainnet gateway; the route surface follows the snarkOS node REST implementation.
  version: v1
  contact:
    name: Provable / Aleo Developer Community
    url: https://docs.aleo.org/
  license:
    name: Apache-2.0
    url: https://github.com/ProvableHQ/snarkOS/blob/staging/LICENSE.md
servers:
- url: https://api.explorer.provable.com/v1
  description: Provable public gateway (mainnet + testnet)
tags:
- name: Chain
  description: Latest chain state
paths:
  /{network}/latest/height:
    get:
      operationId: getLatestHeight
      tags:
      - Chain
      summary: Get latest block height
      description: Returns the height of the latest block on the network.
      parameters:
      - $ref: '#/components/parameters/Network'
      responses:
        '200':
          description: The latest block height.
          content:
            application/json:
              schema:
                type: integer
                example: 20285447
  /{network}/latest/hash:
    get:
      operationId: getLatestHash
      tags:
      - Chain
      summary: Get latest block hash
      description: Returns the block hash of the latest block on the network.
      parameters:
      - $ref: '#/components/parameters/Network'
      responses:
        '200':
          description: The latest block hash.
          content:
            application/json:
              schema:
                type: string
  /{network}/latest/stateRoot:
    get:
      operationId: getLatestStateRoot
      tags:
      - Chain
      summary: Get latest state root
      description: Returns the latest state root of the ledger.
      parameters:
      - $ref: '#/components/parameters/Network'
      responses:
        '200':
          description: The latest state root.
          content:
            application/json:
              schema:
                type: string
  /{network}/latest/block:
    get:
      operationId: getLatestBlock
      tags:
      - Chain
      summary: Get latest block
      description: Returns the full latest block, including its transactions.
      parameters:
      - $ref: '#/components/parameters/Network'
      responses:
        '200':
          description: The latest block object.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Block'
components:
  parameters:
    Network:
      name: network
      in: path
      required: true
      description: The Aleo network to query.
      schema:
        type: string
        enum:
        - mainnet
        - testnet
        default: mainnet
  schemas:
    Transaction:
      type: object
      description: An Aleo transaction (execution or deployment).
      properties:
        type:
          type: string
          enum:
          - execute
          - deploy
          - fee
        id:
          type: string
        execution:
          type: object
        deployment:
          type: object
    Block:
      type: object
      description: An Aleo block.
      properties:
        block_hash:
          type: string
        previous_hash:
          type: string
        header:
          type: object
        transactions:
          type: array
          items:
            $ref: '#/components/schemas/Transaction'
externalDocs:
  description: Aleo developer documentation
  url: https://docs.aleo.org/