SkillFoxx

is-gpt-nerfed plugin

is-gpt-nerfed compares the Codex model you chose with the one answering and reports a silent swap by macOS notification.

  • 261 ★ on the repository
  • Last commit
  • MIT
Plugin

Extended access

Why this level

  • Installation through curl and sh runs a repository script, and the plugin adds Codex hooks.
  • Probing spends requests on your account.
All reasons and checks

kiyoakii/is-gpt-nerfedAuthor:kiyoakii

Install

Works in

Manual install

curl -fsSL https://raw.githubusercontent.com/kiyoakii/is-gpt-nerfed/main/install-app.sh | sh

The first README Install command installs the macOS menu bar app. Read the script before running it.

Access and checks

How we review

Extended accessThe tool runs code or makes network calls and only reads external data.

  • Installation through curl and sh runs a repository script, and the plugin adds Codex hooks.
  • Probing spends requests on your account.

This is third-party code. Review the repository files before installing.

What it does

The Codex plugin reads the records Codex keeps for every turn and flags what changed without your input: a model swap, lower reasoning effort, a hidden internal model such as `gpt-reserve` or a smaller context window. This check spends no tokens. On a schedule the plugin forks the session three times and asks each fork for about 300 random numbers. Models pick numbers with different biases, and the calibrated ModelTrace bank turns three answers into a fingerprint compared with the selected model. The verdict appears as a menu bar face, a notification and a message in the session.

Who it is for. Codex users on macOS who pay for a specific model and want to know whether it was swapped for a cheaper one.

Good fit when

  • Answers in a long session got noticeably weaker and the model needs a check.
  • A fresh session is probed with `$is-gpt-nerfed` before an important task.
  • Codex accounts are switched and a verdict per account is wanted.
  • The `nerfed report` output is compared with Codex records from the last two hours.

Not a fit when

  • You are not on macOS, where the menu bar app is the only interface.
  • The model is missing from the calibrated bank and gets mapped to its nearest look-alike.
  • Not a single request may go to the probe forks.

Example request

Probe this session right now: did the model I selected answer, and show the evidence.

Limitations

Requires macOS 15 or newer, Codex with plugin hooks (tested on 0.154) and the system `python3`. The app is not notarized yet, so macOS blocks the first launch until allowed in settings. Each probe costs three short answers on your account. If a server swaps the weights and keeps the name, only the fingerprint or a smaller context window can show it. The plugin asks you to trust its hooks, and Codex runs no hook without that consent.

How to disable. Run `./uninstall.sh` from the cloned repository to remove everything. Delete the menu bar app from Applications.

FAQ

What does the Suspicious verdict mean?

The fingerprint leans toward another model without confidence. The verdict stands until the next probe.

Does data leave my machine?

No, the README states everything runs on your Mac. The exception is three short probe answers on your Codex account.

How often are probes run?

By default every 30 minutes of activity. Change `frequency` with `nerfed config set frequency <value>`.

How do I probe a session immediately?

Type `$is-gpt-nerfed` in the session or run `nerfed probe now`.

Can I skip the app?

Yes. Clone the repository and run `./install.sh` on any macOS version with `python3`.

Discussion

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README in short

The plugin compares Codex records and a statistical answer fingerprint with the selected model. A mismatch brings a notification and a red face.

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