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Engineering (@Engineering) profile picture

Engineering

@Engineering

updates from our engineering team

 San Francisco
Joined June 2007
  • Tweets1.2K
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  • Followers1.3M
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Three implementations became one, and a profile's first post now loads in 2.7 seconds on a slow connection. Read how we rebuilt X web for speed and efficiency:
Yagiz Nizipli (@yagiznizipli) profile pictureYagiz Nizipli
@yagiznizipliNov 4
The web rewrite is working. On a slow connection, the old X web took more than 22 seconds to show the first post on a profile. The new X web does it in 2.7 seconds. Here's how we did it, and how we're rolling it out one country at a time. blog.x.com/en/engineering/re…
Rebuilding the global town square from scratch

Rebuilding the global town square from scratch

How we rebuilt x.com on the web: one server for people, search crawlers, and link previews, now rolling out to signed-in people country by country, and the performance work since.

blog.x.com
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Engineering retweeted
Santiago (@santiagomed) profile picture
Santiago
@santiagomedOct 16
Ever wondered what it takes to ship an encrypted chat API? I wrote up how to build on the 𝕏 Chat API and a sneak peak on how we built it
Building on 𝕏 Chat

Building on 𝕏 Chat

Article · @santiagomed
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Engineering retweeted
Kyle (@kyletruong) profile picture
Kyle
@kyletruongSep 30
First week at @X done and first big ship: introducing 23 new X Chat endpoints!
Developers (@XDevelopers) profile pictureDevelopers
@XDevelopersSep 30
New X Chat endpoints are now available in X API v2.169. You can now manage groups, admins, invites, join requests, members, mute, TTL, pinned messages, and chat settings from the X API. More details here: docs.x.com/xchat/introductio…
Send encrypted direct messages with the X Chat API - X

Send encrypted direct messages with the X Chat API - X

Learn what the X Chat API offers: send and receive encrypted direct messages on X, with the Chat XDK handling the hard parts for you.

docs.x.com
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Livestream API ✅ Streaming on X ✅
Mike Rosinsky (@mike_rosinsky) profile pictureMike Rosinsky
@mike_rosinskySep 22
One of my favorite verticals that I've worked on, and there's so much more to come. A world-class streaming platform needs a world-class API to match. Now it's here. Tell your favorite streaming software company to get integrated today.
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Engineering retweeted
Mike Rosinsky (@mike_rosinsky) profile picture
Mike Rosinsky
@mike_rosinskySep 22
One of my favorite verticals that I've worked on, and there's so much more to come. A world-class streaming platform needs a world-class API to match. Now it's here. Tell your favorite streaming software company to get integrated today.
Developers (@XDevelopers) profile pictureDevelopers
@XDevelopersSep 22
X Livestream API has been rebuilt from the ground up. Your entire broadcast lifecycle on X can now be powered by our API: go live, schedule broadcasts, run and moderate chat, and get live events for alerts and overlays. Available now. 🚢
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XChat (@chat) profile picture
XChat
@chatSep 22
X Numbers are here. Share yours with anyone you want to contact you, even if you don't follow them. It's an optional way for people to message or call you, without you needing to accept requests or follow them back.
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Engineering retweeted
Santiago (@santiagomed) profile picture
Santiago
@santiagomedAug 29
The @XDevelopers and @bot team worked tirelessly this week to make the X in Grok Bot experience as seamless as possible. On top of the included credits to Grok Bot users, this week we started giving $20 of monthly X API credits to all Premium+ users.
Grok Bot (@bot) profile pictureGrok Bot
@botAug 29
Grok Bot now has improved support for X! When you connect your X profile, a developer account will be automatically created with some included credits.
Image from Grok Bot (@bot)
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Santiago (@santiagomed) profile picture
Santiago
@santiagomedAug 21
We're building the Everything API so agents can work across X and beyond. To get started with the X Ads MCP, assign your developer app to an Ads project at console.x.com
Developer Console

Developer Console

Use the X API with an all-new Developer Console and consumption-based billing. No fixed monthly costs, no monthly caps.

console.x.com
Business (@XBusiness) profile pictureBusiness
@XBusinessAug 21
Create, manage and optimize campaigns from the AI you already use with X Ads MCP. Now accessible with an X Developer Platform account.
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X Open Source (@XOpenSource) profile picture
X Open Source
@XOpenSourceAug 13
Open-sourcing the For You timeline

Open-sourcing the For You timeline

Article · @XOpenSource
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Try X Chat API 👇 docs.x.com/xchat/introductio…
Send encrypted direct messages with the X Chat API - X

Send encrypted direct messages with the X Chat API - X

Learn what the X Chat API offers: send and receive encrypted direct messages on X, with the Chat XDK handling the hard parts for you.

docs.x.com
Santiago (@santiagomed) profile pictureSantiago
@santiagomedJul 30
𝕏 Chat is a full rewrite of DMs on 𝕏 and will replace legacy DMs over time That only works if builders can come along. Businesses ran support & automation on the DM API for years, but none of it works with encrypted messages 𝕏 Chat needed an API of its own. Today it has one
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We've completely rebuilt the Android X app from the ground up. It's faster, smoother, and more reliable than the old version in every way. We modernized the foundation so everything just feels better: scrolling, loading, notifications, you name it.
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Update your app today to see the difference. Many more upgrades to come including hosting Spaces and performance upgrades for older devices. Let us know what you think and reply with any bugs that you catch.
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Nate Esparza (@Nate_Esparza) profile picture
Nate Esparza
@Nate_EsparzaJul 9
The Ads @engineering team at 𝕏 continues to deliver outstanding new products for advertisers! 🔥 In the last month we have launched: - X Ads App on Shopify - Simplified Pixel + Direct CAPI Integration - Improved Dynamic UTMs - New Conversion Tracking Dashboard - Boost & Mentions Boost 🚀
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Try out our new model for free and let us know what can be improved. Install at x.ai/cli
Grok Build

Grok Build

Grok Build is now powered by Grok 4.7, our newest model — with a native subagent view, Plan Mode integration, mouse support, and a fullscreen terminal UI. Install with curl -fsSL https://x.ai/cli/i...

x.ai
SpaceX Super Intelligence (@SpaceXSI) profile pictureSpaceX Super Intelligence
@SpaceXSIJul 8
Announcing Grok 4.5, our first model trained specifically for coding and agents. It was trained with Cursor and offers frontier intelligence at leading speeds and cost efficiency. x.ai/news/grok-4-5
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Andrew Milich (@milichab) profile picture
Andrew Milich
@milichabJul 8
Try Grok 4.5 in the API, Grok Build, and Cursor
SpaceX Super Intelligence (@SpaceXSI) profile pictureSpaceX Super Intelligence
@SpaceXSIJul 8
Announcing Grok 4.5, our first model trained specifically for coding and agents. It was trained with Cursor and offers frontier intelligence at leading speeds and cost efficiency. x.ai/news/grok-4-5
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Creators (@XCreators) profile picture
Creators
@XCreatorsJul 1
Introducing Live Studio (beta) — a completely redesigned livestreaming control room built into 𝕏.com. x.com/i/live-studio
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Andrew Milich (@milichab) profile picture
Andrew Milich
@milichabJul 1
Build a voice agent connected to your scheduling app, knowledge base, and any custom MCPs or APIs Phone number included to get started!
SpaceX Super Intelligence (@SpaceXSI) profile pictureSpaceX Super Intelligence
@SpaceXSIJul 1
Introducing Voice Agent Builder: a no-code platform to create human-like voice agents with Grok Voice. Available today at $0.05 / min. x.ai/voice
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was a lot of fun working on this! agents will now be able to inform their decisions with the highest-quality realtime data known to man. lots more coming soon.
Developers (@XDevelopers) profile pictureDevelopers
@XDevelopersJun 30
Announcing the hosted X MCP. Agents now have access to the best real-time information source in the world. Connect Grok, Cursor, or any MCP-compatible AI tool to the X API without any setup! Check it out here: docs.x.com/tools/mcp
MCP servers for the X API and X developer docs - X

MCP servers for the X API and X developer docs - X

Connect Grok, Cursor, and other AI tools to the X API and X developer docs through hosted Model Context Protocol servers using xurl and docs search.

docs.x.com
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XChat (@chat) profile picture
XChat
@chatJun 29
XChat for Android is live. Chat privately with anyone on X, straight from your home screen. Download now: play.google.com/store/apps/d…
Image from XChat (@chat)
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Build massive-scale systems that drive the business, rebuilt with modern infra + AI at the core. Join a small, fast team where early-career engineers get real ownership, learn from top talent, and ship what matters. Apply Below!👇 job-boards.greenhouse.io/xai…

Software Engineer, Ads Product

Palo Alto, CA

job-boards.greenhouse.io
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