Notice of post inspection
Bag Check is a browser extension. When someone on X posts about a company they hold a stake in, their post gets a tag that links to the public sources.
No good shill will go unpublished.
The agent swarms will come for your code, but the psyops have already come for your mind.
A model goes rogue.
Two competitors trade blows in public.
A team of safety researchers gets fired.
Open-source models get banned.
A lab announces a cure to cancer.
Narratives around defining events are built through a violent, never-ending, and chaotic symphony of investors, founders, posters, and posers on X dot com.
Whether we like it or not, those narratives only truly make sense downstream of financial stakes we can’t see.
Until now…
Bag Check lets you instantly see the bags behind the posts, as you scroll.
It’s a free browser extension designed for X/Twitter that shows you if the person posting has a bag behind their tweet—an investment in the company they’re tweeting about, a board seat, advisor role, PR work, or an investment in one of its competitors.
Think of it as psyop protection against the shameless shills, the dicey digs, and the noiseslop that can so easily entangle.
Bag Check uses a living library of more than 38,000 publicly available and independently verifiable claims covering nearly 18,000 companies and 1,006 investors and operators. It grows every day as new rounds, board seats and filings become public.
An example timeline on X: as each post comes up, Bag Check tags it with the poster’s tie to the company, such as “Sits on their board” or “Invested in their rival”.
Bag Check is a browser extension that instantly shows you if someone is tweeting about someone they’re financially connected to.
As you scroll X, Bag Check checks each post against public records: SEC filings, firms’ portfolio pages, press releases and news. When someone posts about a company they’re tied to (an investment, a board seat, a fund that backs it or its rival), the post gets a tag that links to the sources.
Every claim comes from our curated collection of verified records with a public source; models only answer closed questions, like whether a post means Ramp the company or a ramp.
Investors and operators who post about the companies they’re tied to: venture partners, angels, founders and executives. 1,006 people so far.
To see who’s getting checked, search below. Think we should check someone? Ask us.
Yes. The extension only runs on x.com, and it has no idea who you are. It reads tweets on the page in your browser to match them against its list. It never reads your DMs and never asks for access to your X account or password. It can’t post, like, follow, or take any action on your account.
Nothing about you leaves your device: no account details, no browsing history, no cookies. For some posts by people Bag Check covers, the post’s public text goes to our server so a model can answer a yes-or-no question about it.
See the privacy policy for more details.
If Instagram is the glittering shopping mall of social platforms, Twitter is the dingy back alley littered with cigarette butts and knife fights. But, as a designer and founder who grew up on it, I owe more than anyone should to that alley.
This is my public offering in an era when truth and clarity are scarce.
If Bag Check resonates with you, feel free to shoot me a message or offer your support for this small, independent personal project.
Yes, it’s free to use. However, at scale it becomes a bit pricy to run as a personal project.
If you support the vision of Bag Check, we accept donations to directly offset technical costs.
This is a side project by Michael Miller, a NYC-based founder and designer.
Not who you meant?
Ask us to check them, and we’ll go through the public record.
One check that you’re a person, and we’ll send it.