Vibe Check for X

Chrome and Firefox extension that scores a draft X post with Jev on a dozen rubrics and gives a send-or-don't verdict.

Browser extensionbeta

Overview

Vibe Check for X runs your draft post through Jev before you post. It renders a scorecard under the composer covering virality, funniness, informativeness, clarity, insult level, ragebait, cringe, whether it sounds AI-written, regret risk, typos and the most likely crowd reaction, plus an overall verdict: Send it, Fine/mid, Probably don't, or Sleep on it.

It works in the compose modal, inline composer, replies, quote posts and threads; the tweet being replied to or quoted is sent as context. Jev is text-only, so if you add an OpenAI key, attached images and the first frame of videos are described by a vision model and passed to Jev, with two extra media rubrics. Descriptions are cached per attachment. No build step is needed; Firefox requires a temporary add-on unless signed.

What the decision model decides

Type	Question	Answers
Score	How likely is this post to go viral?	—
Score	How insulting is this post given the reply context?	—
Choice	Overall verdict on posting	Send it · Fine, mid · Probably don't · Sleep on it
Choice	Most likely crowd reaction	—

How it works

Type a draft in X's composer.
The extension sends the draft and reply or quote context to Jev.
Optionally describe attached media with an OpenAI vision model.
Show the scorecard and verdict under the composer.

Strengths

Pre-posting feedback on tone and risk.
Context-aware for replies and quotes.
Media descriptions cached to limit cost.

Caveats

Drafts and context are sent to TypeSafe (and images to OpenAI if enabled).
Firefox install is temporary without signing.

Getting started

Clone the repo and load the folder unpacked in chrome://extensions (or as a temporary add-on in Firefox).

At a glance

Type: Browser extension
Status: beta
Language: JavaScript
Runtime: Chrome/Firefox extension
Has code: yes

Use cases and integrations

Adaptive & Realtime UI100

How curated lists describe it

Shows a Jev scorecard before posting on X, assessing draft clarity, tone, and possible offensiveness.
logicrw/awesome-jev-projects
Chrome extension that scores draft posts and reply context before posting; optional media descriptions come from a separate vision model.
cobanov/awesome-jev
Chrome extension: vibe-check your X posts with TypeSafe's Jev before you hit Post.
hellogumbo/awesome-jev
Chrome and Firefox extension that scores a draft X post on a dozen dimensions and gives a send-or-don't verdict before you publish.
MrJev/awesome-jev

Frequently asked questions

What does it score?

About a dozen dimensions such as virality, clarity, insult level, ragebait and regret risk, plus an overall verdict.

Can it judge images?

Only via descriptions from an optional OpenAI vision model, since Jev is text-only.

What data is sent?

Your draft and reply or quote context to TypeSafe.

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