JSON-RPC 2.0 Request & Response Builder

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Build, validate, and scaffold JSON-RPC 2.0 request and response payloads with terminal cURL commands.

RPC Template:Target RPC URL:

✓ Valid JSON-RPC 2.0

JSON-RPC 2.0 PAYLOAD80 chars

SPEC VALIDATION & CURL SNIPPET

Terminal cURL Execution:

curl -X POST "https://eth.llamarpc.com" \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'

Specification Rules:

• jsonrpc: Must be exactly "2.0".

• method: String containing the action to be invoked.

• params: Structured array or object passed to the method.

• id: Unique identifier matching the response.

✓ How to Use the JSON-RPC 2.0 Request & Response Builder

1

Select an RPC preset (e.g. Ethereum blockNumber, getBalance) or start from scratch.
2

Configure the target RPC endpoint URL.
3

Review real-time JSON-RPC 2.0 specification compliance checks.
4

Copy the validated payload or the ready-to-run terminal cURL snippet.

JSON-RPC 2.0: Overview & Capabilities

JSON-RPC 2.0 is a remote procedure call protocol encoded in JSON. It defines specifications for single requests, batch executions, notifications, and structured error responses.

This tool lets Web3, blockchain, and microservice developers test and validate RPC compliance, format parameters, and generate terminal cURL commands with zero server latency.

Explore deeper technical specifications in our comprehensive guide: JSON to Backend, DB and API Developer Reference Guide →

Key Capabilities

Strict JSON-RPC 2.0 specification validator
Pre-loaded templates for Ethereum EVM (eth_blockNumber, eth_getBalance) and Solana
Batch request and error response scaffolding
Ready-to-run terminal cURL command generator