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OpenAI social network πŸ“±, next-gen cholesterol drug πŸ’Š, how to build an agent πŸ€–

TLDR <dan@tldrnewsletter.com>

April 16, 10:25 am

TLDR
OpenAI is in the early stages of building its own X-like social media network. The company currently has an internal prototype β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ  β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ β€Œ 

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Together With Delve

TLDR 2025-04-16

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πŸ“±

Big Tech & Startups

OpenAI is reportedly developing its own X-like social media platform (1 minute read)

OpenAI is in the early stages of building its own X-like social media network. The company currently has an internal prototype that contains a social feed focused on ChatGPT's image generation. It is unknown whether the company plans to launch the social network as a standalone app or if it plans to integrate it within the ChatGPT app. Having a social media app would allow OpenAI to access real-time data to contain its AI models.
Meta CEO Mark Zuckerberg considered spinning off Instagram from Facebook in 2018: FTC trial (2 minute read)

Mark Zuckerberg considered spinning Instagram out of Meta in 2018 due to concerns about the rising threat of antitrust litigation against Facebook. He had predicted that there would be a non-trivial chance that Meta would be forced to spin out Instagram and WhatsApp in the next 5-10 years. The company is currently being accused of monopolizing the social networking market - Instagram and WhatsApp are at the heart of the antitrust trial, which seeks to cleave the apps from Meta as a possible remedy. Meta disputes the allegations and says that regulators are failing to acknowledge a number of rivals.
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Science & Futuristic Technology

One dose of experimental drug nearly wipes out stealthy cholesterol in 'remarkable' trial (4 minute read)

Lipoproteins are a type of cholesterol that is undetected by routine tests and undeterred by existing drugs, diet, or exercise. People with high levels of the cholesterol are at extremely high risk of cholesterol buildup in their arteries, which raises their odds of heart attack, stroke, and early death from cardiovascular problems. Eli Lilly has developed a drug called lepodisiran that dramatically reduced levels of lipoproteins for up to one year. The effects waned after a year but only slightly.
Deep sea craft filmed unprecedented footage of a colossal squid (3 minute read)

Scientists captured rare footage of a colossal squid on March 9 off the South Sandwich Islands in the Atlantic Ocean. The observed colossal squid was a juvenile and not fully grown at about a foot long - mature individuals grow to around 23 feet long and weigh over 1,100 pounds. It was found swimming at around 1,968 feet beneath the surface. This is the first confirmed live observation of a colossal squid in its natural habitat. Video of the young squid is available in the article.
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Programming, Design & Data Science

The Battle against Bots: How to protect your AI app (Sponsor)

Bots are smarter than everβ€”evading traditional detection with AI. As attacks grow more sophisticated, traditional detection isn't enough.

Enter WorkOS Radarβ€”the all-in-one bot defense to secure your signup flow against brute force attacks, leaked credentials, and fake emails. Protect your app today.
Tech hiring: is this an inflection point? (15 minute read)

Many engineering managers, directors, heads of engineering and startups, and mid-sized companies are reporting that they are currently finding it harder to hire than ever. Some previously common hiring approaches, like coding problems and take-home exercises, no longer work. Candidates are likely to inevitably hit potholes that AI assistants are able to fix eventually. Some companies are starting to introduce more in-person processes despite the cost.
How to Build an Agent (38 minute read)

Building a fully functioning code-editing agent is easy. This post shows how to build a small yet highly impressive agent in less than 400 lines of code, most of which is boilerplate. It explains how to use the Anthropic Go SDK to access Claude, what tools are, and how to access them. The post covers essentially all there is to the inner loop of a code-editing agent.
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Miscellaneous

Mark Zuckerberg once suggested wiping all Facebook friends lists to boost usage (2 minute read)

Meta CEO Mark Zuckerberg proposed deleting all friends lists to get people to use Facebook more in 2022. The idea was to wipe the lists and have everyone start again. It was discussed over emails but was never implemented. The company has taken a different approach to revitalizing the Facebook experience lately by introducing a revamped friends tab that doesn't show algorithmic content to users.
Deel's CEO is now in Dubai, complicating Rippling's lawsuit (2 minute read)

Deel CEO Alex Bouaziz and his lawyer are now in Dubai, complicating Rippling's efforts to serve Buoaziz over a lawsuit that accuses him of bribing a Rippling employee to spy on the company. The UAE has a reputation for being a safe haven for those wanting to avoid extradition. Its legal environment makes extradition very difficult, although the country has told the media it is committed to working with international partners on law enforcement and recently stepped up extraditions of some long-wanted criminals. Deel has responded to the lawsuit by denying all wrongdoing.
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Quick Links

Figma ignores the fear, files paperwork for an IPO (2 minute read)

Pursuing an IPO in the current climate is surprising, even at an exploratory level, but just because the company is working on an IPO doesn't mean it will proceed in the usual timeline.
MCP-Shield (GitHub Repo)

MCP-Shield scans installed Model Context Protocol servers to detect vulnerabilities like tool poisoning attacks, exfiltration channels, and cross-origin escalations.
Google Search switching to googleβ€€com around the world (1 minute read)

Google is getting rid of its country code top-level domain names in favor of using google.com globally.
Stevens: a hackable AI assistant using a single SQLite table and a handful of cron jobs (7 minute read)

You don't need fancy techniques or libraries to build useful personal tools with large language models.
Hacking the Postgres wire protocol (9 minute read)

The Postgres wire protocol can be hacked and manipulated to serve queries to multiple databases at the same time.
Notion Mail is a minimalist but powerful take on email (5 minute read)

Notion Mail looks like Notion but works like Gmail and it contains a lot of AI features to help users tame their inboxes.

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Dan Ni & Stephen Flanders


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