OpenAPI Specification
openapi: 3.1.0
info:
title: Hyperledger Besu JSON-RPC Eth API
description: Hyperledger Besu is an Ethereum client written in Java that exposes a JSON-RPC 2.0 API over HTTP and WebSockets. The API provides namespaces including admin, debug, eth, net, web3, txpool, miner, and trace for interacting with Ethereum-compatible networks, smart contracts, and node operations.
version: '1.0'
contact:
name: Hyperledger Besu Community
url: https://besu.hyperledger.org/
license:
name: Apache 2.0
url: https://www.apache.org/licenses/LICENSE-2.0
servers:
- url: https://besu.example.com
description: Besu JSON-RPC endpoint
tags:
- name: Eth
description: Standard Ethereum JSON-RPC methods.
paths:
/:
post:
summary: JSON-RPC endpoint
description: Single endpoint accepting JSON-RPC 2.0 requests. The `method` field determines the operation invoked across admin, debug, eth, net, web3, txpool, miner, and trace namespaces.
operationId: jsonRpcCall
tags:
- Eth
requestBody:
required: true
content:
application/json:
schema:
$ref: '#/components/schemas/JsonRpcRequest'
responses:
'200':
description: JSON-RPC response
content:
application/json:
schema:
$ref: '#/components/schemas/JsonRpcResponse'
components:
schemas:
JsonRpcResponse:
type: object
required:
- jsonrpc
- id
properties:
jsonrpc:
type: string
enum:
- '2.0'
id:
oneOf:
- type: integer
- type: string
result: {}
error:
type: object
properties:
code:
type: integer
message:
type: string
data: {}
JsonRpcRequest:
type: object
required:
- jsonrpc
- method
- id
properties:
jsonrpc:
type: string
enum:
- '2.0'
method:
type: string
description: Method name, e.g. `eth_blockNumber`, `admin_peers`, `debug_traceTransaction`, `net_version`, `web3_clientVersion`, `txpool_status`, `trace_block`.
examples:
- eth_blockNumber
- eth_getBalance
- eth_sendRawTransaction
- admin_peers
- admin_nodeInfo
- debug_traceTransaction
- net_version
- web3_clientVersion
- txpool_status
- trace_block
params:
type: array
items: {}
id:
oneOf:
- type: integer
- type: string
externalDocs:
description: Hyperledger Besu API Reference
url: https://besu.hyperledger.org/public-networks/reference/api