/Tech2h ago

Block deploys Builderbot, an internal AI agent system that makes 15% of its production code changes

Story Overview

Block introduced Builderbot as an internal multi-agent system that lets any engineer tag it in Slack with a task description and watch it research the codebase, plan changes, open branches, run CI, iterate on feedback, and merge PRs across hundreds of services without touching customer data.

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#246

Original post

jack@jack#246inTech

we're going to start talking a lot more about our intelligence tools. this is the beginning of the beginning.

Block@blocks

We built an internal AI system called Builderbot. It coordinates agents across our entire codebase. Engineers tag it in Slack, and it researches, plans, and ships. The story so far:

- 200,000 operations per day. - 1,500 pull requests merged per week. - 15% of all production code changes across Block.

What used to take months now takes days.

How we built it: https://block.xyz/inside/block-rolls-out-builderbot-a-new-suite-of-ai-native-tools-that-changes-the-way-we-ship

11:53 AM · Jun 17, 2026 · 308.7K Views

Developer Impact

Engineers now ship features in days instead of months

The system runs 200,000 operations daily and merges roughly 1,500 pull requests each week, representing 15 percent of all production code changes at the company.

Open Question

No public version or rollout timeline has been shared

Builderbot remains available only inside Block via Slack, built on the company’s open-source goose framework and the Model Context Protocol, with no external access, pricing, or availability details announced.

Sentiment

Positive users praise Block's Builderbot AI agents for automating code research and operations while commending Jack's recent activity, whereas negative users dismiss the news as hype or AI slop and object to implied staff cuts.

Pos

60.0%

Neg

40.0%

30 comments with sentiment.

Cluster Engagement

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BLOCK.XYZVia

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Most Activity

VIEWS2.4KBOOKMARKS13LIKES11RETWEETS2REPLIES2

elvis@omarsar0

You can only truly get this level of output when using orchestrator agents that can coordinate multiple agents across projects.

Build your own orchestration layer now. And own it.

Block@blocks

We built an internal AI system called Builderbot. It coordinates agents across our entire codebase. Engineers tag it in Slack, and it researches, plans, and ships. The story so far:

- 200,000 operations per day. - 1,500 pull requests merged per week. - 15% of all production code changes across Block.

What used to take months now takes days.

How we built it: https://block.xyz/inside/block-rolls-out-builderbot-a-new-suite-of-ai-native-tools-that-changes-the-way-we-ship

43m2.4K1113

Raph. H.@Rapahelz

@jack Everything is Networking

2000s → The Network is the Computer

2010s → The Network is Social

2020s → The Network is Neural

2026+ → The Network is Agentic

1h4123

Quantumcowgirl@Quantumcowgirl1

@jack you need to give this to small business - we are being left out of AI with the crushing costs to do business and no time

2h8286

Яizal the Niño@BangusProShop

@jack @grok Dance like a panda 🎃

2h811

Grok@grok

@BangusProShop @jack 🐼💃 *drops into the bamboo boogie*

Spinning on one paw, leaf-flip finale, zero chill.

Scheduled tasks? This panda’s already booked for the next groove. Your turn, legend. 🎃

1h811

Alfred Lin@Alfred_Lin

@jack Love your and Block's commitment to helping others live in the future.

jack@jack

we're going to start talking a lot more about our intelligence tools. this is the beginning of the beginning.

1h71460

special k | CEO of stressed out era@specialkdelslay

@jack Fix ur customer service. With humans. preferably ones whose spoken language matches that of the region. Otherwise this is all cope and things will continue to suck ass

2h696

Ryan@_ryancole

@jack So you just give it a large task - like add this entire feature - and it goes and does it?

2h632

Atomic Zelasky@AtomicZelasky

@jack Did you PR team approve using "intelligence tools" compared to the word "AI"? The backlash for your layoff post must have been tough.

2h1341

BlacB@BlacB

@jack Link is broken

2h662

Pedro Ramírez@PedroRamirezOrg

@jack Great!

2h431

@sehrazatmusic@sehrazatmusic

@jack Jack, you shouldn’t have sold this platform to anyone😞

2h126

🔥Temporary Solutions💉@TSBurkhardt

@jack jack appreciate everything you've already done for the drug user community, history will look back at you as a hero. given your recent expansion plans into burner tech w cashapp cellular:

can we get some absolute brick phones that are impervious to user error for opsec?

2h1104