Simone Marzola

herding agents @klarna, opinions my own 🇸🇪

[Simone Marzola @simock85]

@tobi You made this look too fun so I tried the same exercise with Kafka. Single rust binary, S3, one CAS manifest per partition https://t.co/fKeQFuRdZN

[Simone Marzola @simock85]

@vmg @tobi Before someone says it: no, this isn’t a Kafka replacement lol.

One partition per topic. No groups, no transactions.

But stock Kafka clients work. The test kills the process, starts a clean one, and reads the log back from S3.

[Simone Marzola @simock85]

Cursor’s “Git at any scale” by @vmg and @tobi shipping walgit over a weekend sent me down a rabbit hole.

If S3 can be the WAL for Git, why not Kafka?

So obviously I had to try it. Walstream: a tiny Kafka-compatible broker with all durable state in S3.

https://t.co/fKeQFuRdZN

[Simone Marzola @simock85]

@vmg @tobi The whole write path:

1. PUT a record batch
2. CAS the partition manifest
3. ACK

Lose the CAS? Read again and retry. Kill the broker? Start another one. The log is still there.

[Simone Marzola @simock85]

I built Lurkline: a Slack CLI + MCP that works when your workspace bans MCPs/connectors.

No Slack app. No bot. No OAuth flow. Just your existing browser session.

It also handles Slack markup without destroying it.

https://t.co/TEbxsT1Tp9

[Simone Marzola @simock85]

@shaneikennedy @martiano 😂 yeah $4B ECR spike? Cute.

[Simone Marzola @simock85]

New achievement unlocked: Tokenmaxxing Dad Edition 👶

Voice message → phone → Codex → laptop

while trapped under a sleeping newborn

[Simone Marzola @simock85]

The core rule:

Search broad, read narrow.

Search filenames/snippets first. Read only the likely notes. Stop when the question is answered.

Do not dump the whole brain into every prompt.

[Simone Marzola @simock85]

Most AI agent memory systems are backwards.

I tried the plugin route. The better pattern was simpler:

memory = tiny bootloader
brain = searchable Markdown
session = scratchpad
hygiene = demotion loop

Memory is not the brain.

[Simone Marzola @simock85]

https://t.co/UFIPZfEZNm

[Simone Marzola @simock85]

Repo + templates here:

https://t.co/1kGUgObW4m

The intended use is literal: give the Markdown writeups to your agent and ask it to implement the memory-as-bootloader + Markdown-brain pattern for your own setup.

[Simone Marzola @simock85]

The practical prompt is basically:

Read this repo and implement the pattern for my agent setup.

Keep startup memory tiny. Build/use a durable Markdown brain. Add templates for decisions, projects, research, and operations. Search broad, read narrow. Verify writes.

[Simone Marzola @simock85]

https://t.co/UFIPZfEZNm

[Simone Marzola @simock85]

Repo with the implementation recipe + templates:

https://t.co/1kGUgObW4m

This is meant to be agent-readable: give it to your own agent and ask it to adapt the memory-as-bootloader + Markdown-brain pattern to your setup.

[Anshu @anshuc]

@github holy shit, how did the attackers find a large enough uptime window to get in?

[Sebastian Siemiatkowski @klarnaseb]

Great to see our 3 rd party network continue to expand!

Took insp. from Amex, back in the 90s had limited acceptance, today not far from par with VISA

Key is strong distribution partners like Google here and offer payment methods for every vertical

https://t.co/8QHVjq7NDD

[Claude @claudeai]

Introducing Cowork: Claude Code for the rest of your work.

Cowork lets you complete non-technical tasks much like how developers use Claude Code.

[Klarna @Klarna]

Just dropped our Agentic Product Protocol: an open standard that makes 100M+ products instantly discoverable by AI agents.

-400M prices across 12 markets
-Real-time prices & availability

Before agents can buy, they need to know what exists. Now they do.

[Piero Mamberti @pmamberti]

Identity thieves have a card in my name with tens of thousands of £££ in fraud.
@AmericanExpress @AskAmexUK just told me they can't help because "fraud department closes at 6pm".

So criminals get 24/7 access to commit fraud but victims have to wait for business hours?

[Simone Marzola @simock85]

@prevenzione @barsa_net @Klarna @TicketOneIT 😮

[Simone Marzola @simock85]

@g_bonfiglio The difference with systems resiliency is that the sudden loss of _only_ 30% of capacity is likely a catastrophic event, you can't really plan for your company to be able to run with 2/3 of cash available.