# Apollo Client Devtools

> GraphQL debugging tools for Apollo Client.

Canonical page: [https://chrome-stats.com/d/apollo-developer-tools](https://chrome-stats.com/d/apollo-developer-tools)

## Overview

- **ID:** `apollo-developer-tools`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Apollo Team
- **Category:** web-development
- **Daily users:** 5,820
- **Weekly downloads:** 42
- **Rating:** 3.93 / 5 (29 ratings)
- **Version:** 4.26.1
- **Last updated:** 2026-09-03
- **First published:** 2018-02-01
- **Size:** 562 KB
- **Data as of:** 2026-09-05
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/apollo-developer-tools/)
- **Website:** [https://github.com/apollographql/apollo-client-devtools](https://github.com/apollographql/apollo-client-devtools)

## Description

Apollo Client Devtools is a powerful Firefox add-on designed for developers using Apollo Client, the popular open-source GraphQL client. It enhances your development workflow by providing four key features: a built-in GraphQL explorer to run queries seamlessly via your app's network interface, a query watcher to monitor active queries and their variables, a mutation inspector to track all mutations affecting your application data, and a cache inspector featuring a tree-like interface for exploring and searching Apollo Client's cache data. This tool simplifies debugging and helps you maintain efficient GraphQL operations within your applications.

You can access the source code on [GitHub](https://github.com/apollographql/apollo-client-devtools) and report any issues directly through the project's issue tracker. To dive deeper into Apollo's ecosystem and capabilities, visit [Apollo GraphQL's official website](https://www.apollographql.com). Apollo Client Devtools is an essential extension for anyone looking to improve their GraphQL debugging and client-side state management experience.

## Rankings

- #1,076 — Overall
- #111 — Web Development
- #7 — poll
- #59 — debug
- #70 — tools
- #75 — query

## Permissions and access

### Permissions

- `storage`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension was recently updated in the past month. New updates may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Review summary

Users find Apollo Client Devtools valuable for Apollo GraphQL debugging when it works correctly, requiring configuration with 'connectToDevTools: true'. However, many report the add-on is unreliable on Firefox and LinuxMint, with issues like failure to connect, missing developer tools tab, freezing, and disappearing functionality. Some suspect the Firefox support is weaker compared to Chromium. When operational, it is appreciated; otherwise, it causes frustration due to instability and lack of clear integration.

### Pros

- Useful for developers working with Apollo GraphQL when it functions properly.
- Works well if configured correctly, specifically by adding 'connectToDevTools: true' in ApolloClient settings.
- Helpful for debugging Apollo queries within browser developer tools.

### Cons

- Frequently does not work or fails to connect, especially on LinuxMint and Firefox.
- Often causes the developer tools tab to not appear or disappear without explanation.
- Freezes or stops updating, requiring removal and reinstallation to fix.
- No clear visibility or indication in Firefox extensions or developer tools, unlike in Chromium browsers.

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Source: [Chrome-Stats](https://chrome-stats.com/d/apollo-developer-tools)