Arweave Wallets API

openapi: 3.1.0
info:
  title: Arweave HTTP Node Wallets API
  description: 'The core Arweave node REST API for submitting and retrieving transactions, uploading data chunks, querying wallet balances, fetching blocks, and inspecting network state. Requests target any Arweave node on port 1984 (default gateway arweave.net). Amounts are denominated in winstons (1 AR = 10^12 winstons).

    '
  version: 1.0.0
  contact:
    name: Arweave Team
    url: https://www.arweave.org/
    email: team@arweave.org
  termsOfService: https://www.arweave.org/legal/terms-of-use
  license:
    name: MIT
    url: https://opensource.org/licenses/MIT
servers:
- url: https://arweave.net
  description: Arweave public gateway
- url: http://localhost:1984
  description: Local Arweave node (default port 1984)
tags:
- name: Wallets
  description: Endpoints for querying wallet balances and transaction history
paths:
  /wallet/{address}/balance:
    get:
      operationId: getWalletBalance
      summary: Get wallet balance
      description: 'Retrieve the AR balance of a wallet address in winstons. Unknown addresses return 0. Convert to AR by dividing by 10^12.

        '
      tags:
      - Wallets
      parameters:
      - $ref: '#/components/parameters/WalletAddress'
      responses:
        '200':
          description: Balance in winstons returned as numeric string
          content:
            text/plain:
              schema:
                type: string
              example: '6450000000000'
        '400':
          description: Invalid wallet address
  /wallet/{address}/last_tx:
    get:
      operationId: getWalletLastTransaction
      summary: Get last transaction for wallet
      description: 'Returns the transaction ID of the most recent outgoing transaction from the given wallet address. Used to populate the last_tx field when constructing new transactions.

        '
      tags:
      - Wallets
      parameters:
      - $ref: '#/components/parameters/WalletAddress'
      responses:
        '200':
          description: Last transaction ID returned
          content:
            text/plain:
              schema:
                type: string
              example: BNttzDav3jHVnNiV7noWn2KgamiO1m_yI4vI1JcmHco
        '400':
          description: Invalid wallet address
components:
  parameters:
    WalletAddress:
      name: address
      in: path
      required: true
      description: Wallet address (Base64URL encoded SHA-256 of RSA public key modulus)
      schema:
        type: string
externalDocs:
  description: Arweave HTTP API Documentation
  url: https://docs.arweave.org/developers/arweave-node-server/http-api