openapi: 3.0.3
info:
  title: Chainstack Arbitrum Node Account Info Gas Data API
  version: 1.0.0
  description: Chainstack-managed RPC node API for the Arbitrum blockchain. Endpoints follow the canonical JSON-RPC over HTTPS interface for the network. Authenticate against your Chainstack node's per-node URL (e.g. https://nd-XXX-XXX-XXX.p2pify.com/<key>). Merged from the Chainstack Developer Portal per-method fragments at https://github.com/chainstack/dev-portal/tree/main/openapi/arbitrum_node_api.
  contact:
    name: Chainstack API Support
    email: support@chainstack.com
  license:
    name: Chainstack Terms
    url: https://chainstack.com/terms-of-service/
servers:
- url: https://{node_id}.p2pify.com/{api_key}
  description: Chainstack-managed node endpoint
  variables:
    node_id:
      default: nd-000-000-000
      description: Your Chainstack node identifier
    api_key:
      default: <api-key>
      description: Per-node access key
tags:
- name: Gas Data
paths:
  /eth_estimateGas:
    post:
      tags:
      - Gas Data
      summary: eth_estimateGas
      operationId: estimateGas
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                id:
                  type: integer
                  default: 1
                jsonrpc:
                  type: string
                  default: '2.0'
                method:
                  type: string
                  default: eth_estimateGas
                params:
                  type: array
                  items:
                    type: object
                    properties:
                      from:
                        type: string
                        format: byte
                      to:
                        type: string
                        format: byte
                  default:
                  - from: '0x13867a801e352e219c2d2AC29288Bf086e5C81ef'
                    to: '0xbe0eb53f46cd790cd13851d5eff43d12404d33e8'
                  - latest
      responses:
        '200':
          description: The estimated gas amount
          content:
            application/json:
              schema:
                type: object
                properties:
                  jsonrpc:
                    type: string
                  id:
                    type: integer
                  result:
                    type: string
                    format: byte
  /eth_gasPrice:
    post:
      tags:
      - Gas Data
      summary: eth_gasPrice
      operationId: getGasPrice
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                id:
                  type: integer
                  default: 1
                jsonrpc:
                  type: string
                  default: '2.0'
                method:
                  type: string
                  default: eth_gasPrice
                params:
                  type: array
                  default: []
      responses:
        '200':
          description: The value of the current gas base fee in Wei.
          content:
            application/json:
              schema:
                type: object
                properties:
                  jsonrpc:
                    type: string
                  id:
                    type: integer
                  result:
                    type: string
  /eth_maxPriorityFeePerGas:
    post:
      tags:
      - Gas Data
      summary: eth_maxPriorityFeePerGas
      operationId: maxPriorityFeePerGas
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                id:
                  type: integer
                  default: 1
                jsonrpc:
                  type: string
                  default: '2.0'
                method:
                  type: string
                  default: eth_maxPriorityFeePerGas
                params:
                  type: array
                  default: []
      responses:
        '200':
          description: The estimated max priority fee per gas
          content:
            application/json:
              schema:
                type: object
                properties:
                  jsonrpc:
                    type: string
                  id:
                    type: integer
                  result:
                    type: string
                    format: byte
  /eth_feeHistory:
    post:
      tags:
      - Gas Data
      summary: eth_feeHistory
      operationId: eth_feeHistory
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                id:
                  type: integer
                  default: 1
                jsonrpc:
                  type: string
                  default: '2.0'
                method:
                  type: string
                  default: eth_feeHistory
                params:
                  type: array
                  default:
                  - '0x4'
                  - latest
                  - - 25
                    - 75
      responses:
        '200':
          description: Fee history for the requested block range.
          content:
            application/json:
              schema:
                type: object
                properties:
                  jsonrpc:
                    type: string
                  id:
                    type: integer
                  result:
                    type: object
  /eth_blobBaseFee:
    post:
      tags:
      - Gas Data
      summary: eth_blobBaseFee
      operationId: blobBaseFee
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                id:
                  type: integer
                  default: 1
                jsonrpc:
                  type: string
                  default: '2.0'
                method:
                  type: string
                  default: eth_blobBaseFee
                params:
                  type: array
                  items: {}
                  default: []
      responses:
        '200':
          description: Returns the base fee for blob gas in wei.
          content:
            application/json:
              schema:
                type: object
                properties:
                  jsonrpc:
                    type: string
                  id:
                    type: integer
                  result:
                    type: object
                    nullable: true