JSON-RPC Protocol Converter Tool

Seamlessly convert between JSON-RPC, REST, and GraphQL API formats to facilitate cross-protocol integration.

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Overview

The JSON-RPC Protocol Converter is a powerful tool that bridges the gap between different API paradigms. It enables developers to translate between JSON-RPC, REST, and GraphQL formats, allowing seamless integration between systems that use different API architectures.

Whether you're migrating from one API style to another, creating compatibility layers, or simply learning about the differences between these approaches, the Protocol Converter provides a straightforward way to transform API definitions and requests.

Pro Tip: Use the Protocol Converter when integrating with legacy systems or when you need to provide multiple API interfaces for the same backend functionality.

Features

Bi-directional Conversion

Convert from any supported protocol to any other

Interface Mappings

Map methods, resources, and queries between protocols

Schema Transformation

Convert data schemas between different protocol formats

API Definition Import

Import OpenAPI, GraphQL schemas, or JSON-RPC method lists

Interactive Preview

See conversion results in real-time as you make changes

Export Options

Save converted definitions in various formats

Conversion Types

The Protocol Converter supports the following types of conversions:

JSON-RPC to REST

Transforms JSON-RPC methods into RESTful endpoints with appropriate HTTP methods. The converter maps JSON-RPC method names to resource paths and translates parameters into query parameters, path variables, or request bodies as appropriate.

REST to JSON-RPC

Converts RESTful API definitions into JSON-RPC method interfaces. The converter transforms resource-based paths and HTTP methods into method names, and converts path variables, query parameters, and request bodies into JSON-RPC parameters.

JSON-RPC to GraphQL

Transforms JSON-RPC methods into GraphQL queries and mutations. The converter maps method names to GraphQL operation names and creates appropriate GraphQL types for input parameters and return values.

GraphQL to JSON-RPC

Converts GraphQL schema definitions into JSON-RPC method interfaces. The converter transforms GraphQL queries and mutations into JSON-RPC methods, with appropriate parameter and return type mappings.

Usage Guide

Basic Conversion Steps

To perform a protocol conversion:

  1. Select the source protocol (JSON-RPC, REST, or GraphQL)
  2. Enter or import the API definition for the source protocol
  3. Select the target protocol you want to convert to
  4. Configure any conversion options specific to your needs
  5. Click "Convert" to generate the equivalent API in the target protocol
  6. Review the conversion and make any necessary adjustments
  7. Export or copy the converted API definition

Input Format Examples

JSON-RPC Method Definition
{
  "methods": [
    {
      "name": "getUserProfile",
      "params": {
        "userId": {
          "type": "number",
          "description": "ID of the user to retrieve"
        }
      },
      "returns": {
        "type": "object",
        "properties": {
          "id": {"type": "number"},
          "username": {"type": "string"},
          "email": {"type": "string"},
          "createdAt": {"type": "string", "format": "date-time"}
        }
      }
    }
  ]
}
OpenAPI (REST) Definition
openapi: 3.0.0
info:
  title: User API
  version: 1.0.0
paths:
  /users/{userId}:
    get:
      summary: Get user profile
      parameters:
        - name: userId
          in: path
          required: true
          schema:
            type: integer
          description: ID of the user to retrieve
      responses:
        '200':
          description: User profile data
          content:
            application/json:
              schema:
                type: object
                properties:
                  id:
                    type: integer
                  username:
                    type: string
                  email:
                    type: string
                  createdAt:
                    type: string
                    format: date-time

Advanced Options

The Protocol Converter offers several advanced options to fine-tune your conversions.

Advanced Configuration Options

Naming Conventions

Configure how method names are converted to endpoints or GraphQL operations. Options include camelCase, snake_case, kebab-case, and custom patterns.

Authentication Mapping

Specify how authentication mechanisms should be translated between protocols (e.g., mapping JSON-RPC auth parameters to REST headers or GraphQL context).

Error Handling

Configure how error codes and messages are translated between different protocols' error handling mechanisms.

Batch Request Handling

Define how JSON-RPC batch requests are converted to other protocols that may not have native batch support.

Conversion Examples

JSON-RPC to REST Example

JSON-RPC Input

{
  "jsonrpc": "2.0",
  "method": "createOrder",
  "params": {
    "customerId": 42,
    "items": [
      {"productId": 101, "quantity": 2},
      {"productId": 205, "quantity": 1}
    ],
    "shippingAddress": {
      "street": "123 Main St",
      "city": "Anytown",
      "zipCode": "12345"
    }
  },
  "id": 1
}

REST Output

POST /customers/42/orders
Content-Type: application/json

{
  "items": [
    {"productId": 101, "quantity": 2},
    {"productId": 205, "quantity": 1}
  ],
  "shippingAddress": {
    "street": "123 Main St",
    "city": "Anytown",
    "zipCode": "12345"
  }
}

JSON-RPC to GraphQL Example

JSON-RPC Input

{
  "jsonrpc": "2.0",
  "method": "searchProducts",
  "params": {
    "query": "laptop",
    "category": "electronics",
    "minPrice": 500,
    "maxPrice": 2000,
    "limit": 10,
    "offset": 0
  },
  "id": 1
}

GraphQL Output

query {
  searchProducts(
    searchInput: {
      query: "laptop"
      category: "electronics"
      priceRange: {
        min: 500
        max: 2000
      }
      pagination: {
        limit: 10
        offset: 0
      }
    }
  ) {
    id
    name
    description
    price
    category
    imageUrl
  }
}

Limitations

While the Protocol Converter is a powerful tool, there are some inherent limitations when converting between different API paradigms:

Protocol Semantic Differences

Each protocol has fundamental design principles that may not have direct equivalents in other protocols. For example, GraphQL's nested queries don't have a direct equivalent in JSON-RPC or REST.

Batch Processing

JSON-RPC has native support for batch requests, while REST typically doesn't. The converter provides approximations but cannot guarantee identical behavior.

State Management

REST is designed around resource states, while JSON-RPC is more procedure-oriented. These fundamental differences may lead to imperfect translations.

Performance Considerations

Converted APIs may not be as performant as purpose-built implementations for each protocol. Consider this a starting point that may require optimization.

Note: The Protocol Converter is best used as a starting point for cross-protocol integrations or for educational purposes. For production systems with high performance requirements, we recommend reviewing and optimizing the generated outputs.