c15t

The Developer-First Consent Banner.
Created and maintained by @inth

[c15t @c15tdev]

👀

[c15t @c15tdev]

The banners are climbing 🧗

More than 2,600 c15t consent banners have been tracked by Wappalyzer.

Developers are done with slow, bloated vendor scripts. c15t runs at 89ms, lives in your codebase, and is fast to ship.

[c15t @c15tdev]

The future of c15t and compliance implementation looks very agent-first 👀

[Inth (YC P26) @Inth]

#GoogleIO just shipped massive wins for developers! 🚀

→ Gemini 3.5 Flash: Frontier-level coding & reasoning at blazing Flash speed, built for agents

→ Antigravity 2.0: The agent-first IDE just got seriously upgraded (multi-agent orchestration, native voice, deep Firebase + Android integration)

→ Google AI Studio: Now with seamless prompt-to-production workflows + native Android support

No matter what you’re building, privacy & consent compliance isn’t optional.

Power it with Gemini 3.5 Flash using Inth Consent and @c15t — clean, fast, developer-first cookie banners.

👉 https://t.co/zCC7t7WKiP

[c15t @c15tdev]

15 new integrations landed in c15t 2.1.0.

Mixpanel, Fathom, Segment, Matomo, Plausible, Hotjar, Vercel Analytics, and more. All consent-aware. None of them block your page load.

https://t.co/LPdjPjYXAh

[c15t @c15tdev]

Just launched c15t 2.0 on @ProductHunt to share our latest version and features;

- c15t is still the fastest banner available at 89ms to load
- agents can now use c15t/skills to implement even faster
- improved consent aware script loading
- Dev tools to inspect consent states anywhere
- now ships with Apache 2.0 license

Come say hi and tell us what you think!
https://t.co/ySIMKU3gmB

[Y Combinator @ycombinator]

Inth is building cookie banners that don't cost your Core Web Vitals.

Bundled into your website's code, Inth's open-source cookie banner standard, c15t, has native SDKs, i18n, and are fully customizable to match your UI and brand. Quickstart: npx @ c15t/cli

Congrats on the launch, @burnedchris!

https://t.co/rMn7U61PN9

[Inth (YC P26) @Inth]

Launch Week Day 5. Inth DSAR announcement, and wrapping up an incredible week.

Today we announce Inth DSAR is coming. The fully managed DSAR platform.

Inth DSAR is a complete hosted platform built on top of DSAR SDK to manage the full lifecycle of your DSAR requests. There’s two parts:

① Use our automated dashboard to quickly understand your liability and legal statuses of each request, no matter the method of intake or jurisdiction.
② Give your users clean branded portals to improve their experience and expectations throughout each stage of their request, from intake to appeals.

Join Inth DSAR’s waitlist on our dashboard at https://t.co/7bX6LwV3TX to be the first to know when it’s out.

Our launch week has now come to an end.

Here’s the highlights from the first 4 days;
Day ① https://t.co/0EBOE17Qvq became https://t.co/T8r2zeThnX. We’ve evolved from just cookie banners to consent and privacy infrastructure. We’ve also joined Y Combinator P26.
Day ② c15t 2.0 is finally here. Our open-source cookie consent banner just got major upgrades. Read the docs: https://t.co/S0tZKyXW1p
Day ③ Reintroduced our hosted c15t infrastructure, with major upgrades to our dashboard, new configurations, and support for more international standards. Sign up here: https://t.co/V8KrsRzeZn
Day ④ DSAR SDK. The new open-source standard for handling DSAR requests programmatically. Start here: https://t.co/OYCGdHHyg6

Inth’s first launch week has been transformative for our company. We can’t thank everyone enough for the engagement, the reception, and joining us for our week.

Chris is here to sign us out 👋

[c15t @c15tdev]

c15t is no longer the only open-source project at @Inth - DSAR SDK is the new standard for handling DSAR requests programmatically.

[Inth (YC P26) @Inth]

Launch Week Day 4. DSAR SDK, the new open-source standard for handling DSAR requests programmatically.

You’ve either never heard of DSAR, or if you have, you know that it’s a nightmare task every time a request for one comes through.

Today that changes. Inth’s second open-source product releases today. DSAR SDK.

DSAR SDK is the open-source framework for handling DSAR requests programmatically.

① Abstract every jurisdiction rule to stay on top of every nuance in the process.
② Automate the entire DSAR lifecycle, from intake, ID Verification, fulfilment, and appeals.
③ Tracks deadlines automatically with DSAR SDK’s legal clock. Accounts for pauses and extensions, and produces an explainability trace.
④ DSAR Policy Packs helps you stay on top of changes for every jurisdiction so you know your liability for each request.

⑤ Our full-lifecycle state machine means there’s no chance of accidentally skipping key stages in each request.

Check DSAR SDK in detail in thread.

Read DSAR SDK’s Docs: https://t.co/OYCGdHI65E

Star DSAR SDK on GitHub: https://t.co/FwhImxtT4H

[Dominik Koch @dominikkoch]

you either die a hero or wait long enough to see yourself become a coding agent

[c15t @c15tdev]

Check out the latest upgrades and support for our hosted c15t infrastructure for Inth's Launch Week Day 3

[Inth (YC P26) @Inth]

Launch Week Day 3. Our hosted c15t infrastructure, reintroduced with major upgrades and support.

① Your managed backend for c15t, with database storage and audit trails ready for the regulators.
② Custom and preconfigured Policy Packs for best practises and fine tuning.
③ IAB TCF 2.3 support for ad publishers wanting the best c15t has to offer.
④ Host the fastest consent banners and get the best performance available to c15t.
⑤ Observability dashboard for tracking consent activity, geo-location data, and bot traffic detection.

Check the details in thread.

https://t.co/T8r2zeThnX is now used by your favorite devtool companies, luxury hotels and gyms, and world class dev agencies to create the fastest consent experiences out there.

Want to join them? Start here: https://t.co/V8KrsRzeZn

[Kaylee @kaylee_dev]

What framework should we ship first?

[c15t @c15tdev]

c15t 2.0 is here!

[Inth (YC P26) @Inth]

Launch Week Day 2. @c15tdev 2.0 is finally here.

Our open-source cookie consent banner just got a major upgrade.

Faster load times, 60% smaller bundle, and a whole load of features to add styled and compliant consent into your site faster and easier than ever before.

① New design token banner styling system.
② c15t/skills - Implement & style your banner, add scripts with an agent.
③ IAB TCF 2.3 and Global Privacy Control support.
④ DevTools, test, debug, and simulate what users see.
⑤ c15t is now Apache License 2.0.

Check the details in thread 🧵

c15t is now growing over 53% MoM. c15t makes it easier than ever to get started and join those already running performant consent banners.

Start here: https://t.co/7yTJz5yqES

[Inth (YC P26) @Inth]

Launch Week Day 1. Today, https://t.co/0EBOE17Qvq becomes https://t.co/x44sAnakBB.

We've evolved from just a cookie consent banner.

We're Inth, consent and privacy infrastructure. Built for performance, full developer control.

We're not doing this alone. We've raised a $1.2m pre-seed and joined @ycombinator's YC P26.

Over the last year, @c15tdev has reached 1.7k GitHub stars and 1.6M+ downloads.

This week, we're announcing the first steps of what Inth is building.

[c15t @c15tdev]

I heard some BIG things are dropping with c15t 🤫

[consent @consentdotio]

Something big is coming on April 13th.

We're releasing our first Launch Week. 5 days of drops.

We're giving ourselves the rockstar treatment and you're not going to want to miss what we're launching.

Sign up to hear when it drops: https://t.co/P4udaKRjVs

[c15t @c15tdev]

@interfere_ Thanks @interfere_ for building this for @c15tdev and others

[c15t @c15tdev]

@BurnedChris @expo @zeddotdev You guys are the best.

[c15t @c15tdev]

@resend We agree.

[Christopher Burns @BurnedChris]

I can't believe we managed to hit 1 million downloads in our first year with @c15tdev.

We feel like we're just getting started. We can't wait to talk more about c15t 2.0 very soon!

[consent @consentdotio]

Big thanks to @ReactAdvanced London for having us at @figma's London office tonight.

@BurnedChris shared how @c15tdev is making consent management actually performant. No cookie banner bloat, no Lighthouse penalties, just clean compliance without performance loss.

[consent @consentdotio]

Meet us in-person again for two more events in London next week, with @BurnedChris talking performance costs of cookies and scripts.

1. @nextjs London Meetup, at Metro Bank, Tues 17th Feb at 5:30pm, Luma: https://t.co/npFfZK3tXO

2.@ReactAdvanced London Meetup, hosted by @figma
Wed 18th Feb at 6pm, Guild: https://t.co/cm2C1ijlYv