Polkadot JSON-RPC DevTools

Extension Developer Tools

Item media 1 (screenshot) for Polkadot JSON-RPC DevTools

Overview

Devtools for the polkadot JSON-RPC Spec

This extension adds a new panel to Chrome DevTools that inspects JSON-RPC messages sent with Polkadot-API. It is useful when debugging applications that speak to Substrate-based chains over JSON-RPC. Features: - Groups multiple JSON-RPC connections per tab, so you can inspect all traffic for a page in one place. - Provides an improved, structured JSON view for requests and responses, making complex payloads easier to read. - Understands chainHead JSON-RPC methods so you can inspect subscriptions, operations and their lifecycle. - Lets you follow pinned blocks and track the operations executed on each tracked block. Decodes operations and responses into a more readable representation while keeping the underlying raw JSON available.

0 out of 5
No ratings
Learn more about results and reviews.

Details

Version
0.1.0
Updated
December 18, 2025
Flag concern
Offered by
victor
Size
232KiB
Languages
English
Developer
Streamsphere Labs
Vilamari 130 Barcelona, Barcelona 08015 ES
Email
info@streamsphere.io
Non-trader
This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

The developer has disclosed that it will not collect or use your data.

This developer declares that your data is

Not being sold to third parties, outside of the approved use cases
Not being used or transferred for purposes that are unrelated to the item's core functionality
Not being used or transferred to determine creditworthiness or for lending purposes

Formik Devtools

5.0

Formik Developer Tools for debugging React form components

gRPC-Web Developer Tools

3.6

gRPC-Web Developer Tools for debugging application's gRPC-Web network requests.

JSON RPC Chrome Viewer

5.0

JSON RPC requests Chrome developer tools viewer. More convenient way to manage your rpc requests.

JSON Viewer

5.0

A beautiful, customizable JSON/JSONP viewer and highlighter. Open-source fork: https://github.com/Lysak/json-viewer

JSON Formatter

4.6

Makes JSON easy to read and explore

JSON Viewer V3

5.0

The most beautiful and customizable JSON/JSONP highlighter that your eyes have ever seen

PixiJS DevTools

4.7

DevTools for PixiJS

JSONGrid Web Inspector

3.0

A Chrome extension for inspecting JSON data with JSONGrid, a tabular JSON view.

JSON Pretty

4.6

Use JSON Pretty to parse, format, and pretty print json data. A powerful json formatter and beautify tool for easy data readability.

OdooTerminal

5.0

Terminal-like to send json-rpc requests and use tools for Odoo developers

JSON Hero

4.3

A beautiful JSON explorer packed with features

Event Sniffer

0.0

DevTools extension for capturing JSON POST requests and filtering event data in real time.