---
title: "CPOS Companion – Chrome extension stats, history and permissions"
description: "No user count, rated 5.00 by 10 people. Version 0.17.0, updated 2026-07-06. Requests 11 permissions."
url: "https://extensiontracker.com/extension/gjnbapmjonegeeamdeahcoojgokeogmm"
---

# CPOS Companion

Live in the Chrome Web Store.

- Users: the store shows no user count
- Rating: 5.00 from 10 ratings
- Last checked: 2026-09-27 01:50 UTC
- Users gained in 7 days: – (needs a week of history)
- Users gained in 30 days: – (needs a month of history)

## The listing

What the Chrome Web Store shows, as of the last check.

Summary from the listing:

> Codeforces, CSES & AtCoder companion: capture & submit, in-browser editor, profile analytics, themes & practice tools. Local-first.

- Extension ID: `gjnbapmjonegeeamdeahcoojgokeogmm`
- Developer: [aggarwalsoham3](https://extensiontracker.com/developer/u60dc61238bdd47fc1f5e4be844e43073)
- Trader status: Not declared a trader under EU law
- Category: [Productivity › Developer Tools](https://extensiontracker.com/category/productivity/developer)
- First published: 2026-06-01
- Last updated: 2026-07-06
- Version: `0.17.0`
- Size: 546 KiB
- Minimum Chrome: 88
- Languages (1): English
- Support page: `https://github.com/Soham109/cpos/issues`
- Chrome Web Store: <https://chromewebstore.google.com/detail/cpos-companion/gjnbapmjonegeeamdeahcoojgokeogmm>
- View the code or download the CRX, in CRX Viewer: <https://robwu.nl/crxviewer/?crx=https%3A%2F%2Fchromewebstore.google.com%2Fdetail%2Fgjnbapmjonegeeamdeahcoojgokeogmm>

## Users over time

One row per check, newest first, as shown on the Chrome Web Store.

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-09-27 | – | 5.00 | 10 |

## What changed

Every change found on a check, newest first.

No changes found since tracking began on 2026-09-27.

## What it can access

From the extension's manifest, in plain language.

### Sites

- `http://127.0.0.1:27121/*`: 127.0.0.1:27121
- `http://127.0.0.1:27122/*`: 127.0.0.1:27122
- `https://atcoder.jp/*`: atcoder.jp
- `https://codeforces.com/*`: codeforces.com
- `https://cses.fi/*`: cses.fi
- `https://ntfy.sh/*`: ntfy.sh

### Sites where it runs scripts

- `https://atcoder.jp/contests/*/submit*`: atcoder.jp
- `https://atcoder.jp/contests/*/tasks/*`: atcoder.jp
- `https://codeforces.com/*`: codeforces.com
- `https://codeforces.com/blog/entry/*`: codeforces.com
- `https://codeforces.com/contest/*`: codeforces.com
- `https://codeforces.com/contest/*/problem/*`: codeforces.com
- `https://codeforces.com/contest/*/standings*`: codeforces.com
- `https://codeforces.com/contest/*/submit`: codeforces.com
- `https://codeforces.com/contest/*/submit*`: codeforces.com
- `https://codeforces.com/edu/*/submit`: codeforces.com
- `https://codeforces.com/group/*/contest/*/submit`: codeforces.com
- `https://codeforces.com/gym/*`: codeforces.com
- `https://codeforces.com/gym/*/problem/*`: codeforces.com
- `https://codeforces.com/gym/*/submit`: codeforces.com
- `https://codeforces.com/gym/*/submit*`: codeforces.com
- `https://codeforces.com/problemset*`: codeforces.com
- `https://codeforces.com/problemset/problem/*`: codeforces.com
- `https://codeforces.com/problemset/submit*`: codeforces.com
- `https://codeforces.com/profile/*`: codeforces.com
- `https://cses.fi/*`: cses.fi
- `https://cses.fi/problemset/list*`: cses.fi
- `https://cses.fi/problemset/list/*`: cses.fi
- `https://cses.fi/problemset/submit/*`: cses.fi
- `https://cses.fi/problemset/task/*`: cses.fi

### Browser features

- `alarms`: Run tasks on a schedule
- `notifications`: Show notifications
- `scripting`: Run scripts on sites it can reach
- `storage`: Save settings and data in your browser
- `tabs`: Read the addresses and titles of your tabs

## More from this developer

Other extensions from the same publisher account.

| Extension | Users | Rating | Ratings | Category |
| --- | ---: | ---: | ---: | --- |
| [SubChat — AI side-chat with memory](https://extensiontracker.com/extension/nmbmgjgehmpopilieoojidjcpiegkgoc) | 107 | – | – | Tools |

All 2 extensions by [aggarwalsoham3](https://extensiontracker.com/developer/u60dc61238bdd47fc1f5e4be844e43073).

## About this data

Collected from the extension's public Chrome Web Store listing. It's checked every month, and again whenever a new version appears. Last checked 2026-09-27 01:50 UTC; next check around 2026-10-14.

How the data is collected: <https://extensiontracker.com/methodology>.

## Cite this page

Extension Tracker. “CPOS Companion” (gjnbapmjonegeeamdeahcoojgokeogmm). Chrome Web Store data, last checked 2026-09-27. https://extensiontracker.com/extension/gjnbapmjonegeeamdeahcoojgokeogmm. Accessed 2026-09-28.

```bibtex
@misc{extensiontracker_gjnbapmjonegeeamdeahcoojgokeogmm,
  title   = {CPOS Companion (gjnbapmjonegeeamdeahcoojgokeogmm)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-09-27},
  url     = {https://extensiontracker.com/extension/gjnbapmjonegeeamdeahcoojgokeogmm},
  urldate = {2026-09-28}
}
```

---

From Extension Tracker, a public record of the Chrome Web Store: <https://extensiontracker.com/extension/gjnbapmjonegeeamdeahcoojgokeogmm>. It isn't affiliated with Google. The data is free to reuse under CC BY 4.0 (<https://creativecommons.org/licenses/by/4.0/>), crediting Extension Tracker. Extension, developer and list pages come as Markdown too: add `format=md` to the address, as in `https://extensiontracker.com/extension/{id}?format=md`.