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Show HN: Voight-Kampff Machine: Diagnostics of the "Is" vs. "Wish" Clash

https://zenodo.org/records/19538276
1•Weatherill•48s ago•0 comments

The exponential curve behind open source backlogs

https://armanckeser.com/writing/jellyfin-flow
1•armanckeser•1m ago•0 comments

The Usefulness of Useless Knowledge

https://timharford.com/2026/04/the-usefulness-of-useless-knowledge/
1•rpgbr•2m ago•0 comments

Absurd in Production: Durable Execution with Just Postgres

https://lucumr.pocoo.org/2026/4/4/absurd-in-production/
1•lapnito•4m ago•0 comments

The missing catalogue: why finding books in translation is still so hard

https://blogs.lse.ac.uk/impactofsocialsciences/2026/04/13/the-missing-catalogue-why-finding-books...
1•AusiasTsel•4m ago•0 comments

OpenAI Codex Telepathy feature flag: sidecar for passive screen-context memories

https://github.com/openai/codex/pull/17777/commits/da513220f971346718399012300665a93dfb8883
1•matthieu_bl•4m ago•0 comments

Ask HN: I quit my job over weaponized robots to start my own venture

2•barratia•8m ago•1 comments

Building a Real-Time Routing System for Payment Success at Cashfree Payments

https://tech.cashfree.com/building-a-real-time-routing-system-for-high-volume-payment-success-at-...
1•shritama_saha•10m ago•0 comments

Read the Friendly Manual

https://plo.fyi/blog/read-the-friendly-manual/
1•ploMP4•10m ago•0 comments

Ada Lovelace and the First Computer Algorithm

https://www.101computing.net/ada-lovelace-and-the-first-computer-algorithm/
1•birdculture•11m ago•0 comments

We Tracked Every Congressional Bill to Its Prediction Market

https://simplefunctions.dev/blog/legislation-tracker-congress-prediction-markets
1•patrickliu0077•11m ago•1 comments

China Imposes New Rules to Block Foreign Companies from 'Decoupling'

https://www.nytimes.com/2026/04/14/business/china-foreign-companies-supply-chain.html
1•thelastgallon•12m ago•0 comments

The Case Against Gameplay Loops

https://blog.joeyschutz.com/the-case-against-gameplay-loops/
1•coinfused•13m ago•0 comments

Optimizing Chained Strcmp Calls for Speed and Clarity

https://medium.com/@yair.lenga/optimizing-chained-strcmp-calls-for-speed-and-clarity-without-refa...
1•yairlenga•15m ago•1 comments

Architecture Catas – A collection of anti-patterns

https://github.com/Bellangelo/architecture-catas
3•bellangelo•15m ago•0 comments

Mastodon gets Sovereign Tech Agency funding

https://blog.joinmastodon.org/2026/04/sovereign-tech-agency-funding/
2•edent•17m ago•0 comments

Rubens Menin's 150 Years "Old" Port Wine

https://neofeed.com.br/finde/o-vinho-do-porto-very-very-old-de-rubens-menin/en/
1•Anon84•18m ago•0 comments

Computational 'time machine' shows solar and wind power on track for 2°C target

https://techxplore.com/news/2026-04-machine-solar-power-track-2c.html
1•geox•18m ago•0 comments

NimConf 2026: Dates Announced, Registrations Open

https://nim-lang.org/blog/2026/04/07/nimconf-2026.html
2•moigagoo•20m ago•0 comments

Thucydides Trap

https://en.wikipedia.org/wiki/Thucydides_Trap
1•nomilk•21m ago•0 comments

1% Vacancy, 81% Preleased: Where Midmarket Compute Deploys in 2026

1•jaynamburi•25m ago•0 comments

Ask HN: Preferred pricing model for sound effects libraries?

2•CSP_LIBRARY•33m ago•1 comments

Energy-Guard OS – A 411MB CPU-Native AI Security Gateway (4ms Latency)

https://github.com/almoizsaad/Energy-Guard-OS-Security-Benchmark
1•ALMOIZ_MOHMED•37m ago•0 comments

Why it's so hard to innovate in the email space (2014)

https://collinmathilde.medium.com/why-its-so-hard-to-innovate-in-the-e-mail-space-9874e08e3426
2•downbad_•39m ago•1 comments

PHP 8.6 Closure Optimizations

https://wiki.php.net/rfc/closure-optimizations
1•moebrowne•40m ago•1 comments

The Folly of SEO

https://yadin.com/notes/seo-folly/
1•dryadin•41m ago•0 comments

US officials underwhelmed by French far-right's plans for economy

https://www.reuters.com/world/europe/us-officials-underwhelmed-by-french-far-rights-plans-economy...
4•vrganj•43m ago•2 comments

AdVersa: Adversarially-Robust and Practical Ad and Tracker Blocking in the Wild

https://github.com/SKKU-SecLab/AdVersa
1•grac3•50m ago•1 comments

The Etymological Problem with Apples

https://dannybate.com/2026/04/08/the-etymological-problem-with-apples/
1•Anon84•54m ago•0 comments

Why My WordPress?

https://alex.kirk.at/2026/04/14/why-my-wordpress/
2•akirk•56m ago•1 comments
Open in hackernews

Show HN: Pixelagent – Build your Stateful Agent Framework in 200 lines of code

https://github.com/pixeltable/pixelagent
30•pierrebrunelle•11mo ago

Comments

jweisspxl•11mo ago
Pixelagent: Agent Engineering Blueprint https://www.youtube.com/watch?v=BS6PRsnxkBA
SafeDusk•11mo ago
Exciting to see a fellow builder in the space! Love how memory management and observability is built-in.

Today, I just re-implemented Google's AlphaEvolve for Perlin noises using my own minimal agentic framework (https://toolkami.com/alphaevolve-toolkami-style/), will probably steal a trick or two from you.

pierrebrunelle•11mo ago
Congrats! Take whatever you want :)

Yes: Memory, observability, versioning, and lineage being built-in is a derivative of unifying orchestration and storage: https://docs.pixeltable.com/docs/datastore/computed-columns.

bosky101•11mo ago
Your readme doesn't mention any example of multiple agents. We don't need another wrapper to anthropic/openai/*. Without being able to select between multiple tools/agents - you only need 2 lines of code to achieve llm calls, and another 2 lines for state management.

That said the interface is more idiomatic that others agent frameworks that show up here.

It also wasn't clear where the last N messages is being persisted. Db/file/adapters/?

Good luck!

pierrebrunelle•11mo ago
Thanks!

https://github.com/pixeltable/pixelagent/tree/main/examples/... for multiple tools/agents. A tool is just a UDF. You can have as many as you want.

The goal of this reference agent SDK is to showcase the flexibility of Pixeltable (the underlying unified storage and orchestration system) that is Open Source and Apache 2.0.

This is where storage is defined: https://github.com/pixeltable/pixelagent/blob/main/pixelagen.... These are very simple examples.

Here's how an Agentic Reddit bot would work for instance: https://github.com/pixeltable/pixeltable/tree/main/docs/samp...

RamblingCTO•11mo ago
I'll just leave this here: https://github.com/The-Pocket/PocketFlow 100 lines of code agent lib that's not tied to a commercial offering
pierrebrunelle•11mo ago
I like PocketFlow. You beat me on the # of lines of code! But does it provide parallelization, caching, orchestration, versioning, observability, lineage, multi-modal support?

As you just showed, building an agent SDK is easy, so what's interesting to me is tackling:

- Infrastructure Sprawl: Juggling separate systems for vector search, state tracking, multimodal data handling, and monitoring leads to fragmented workflows and high operational costs. - State Management Nightmares: Reliably tracking agent memory, tool calls, and intermediate states across potentially long-running, asynchronous tasks is incredibly difficult. - Multimodal Integration Pain: Integrating and processing images, audio, video, and documents alongside text requires specialized, often disparate, tooling. - Observability Gaps: Understanding why an agent made a decision or failed requires visibility into its state and data lineage, which is often lacking.

And doing all of that while finding the right abstraction layer to leave all the application and business logic to the dev/users so they don't feel limited. It's difficult!

Besides, I don't know where you see a commercial offering? Everything is Apache 2.0/Open Source from A to Z.

RamblingCTO•11mo ago
PocketFlow is not from me, but just my current favorite ;)

I just got the feeling that the lib is tied to pixeltable, but maybe I misunderstood? Maybe that's why this is dead? pocketflow is completely standalone and the main thing is that you vibe code what you need (works awesome so far!).

I don't want to sideline the discussion about pixelagent, but here's some more about pf:

- https://the-pocket.github.io/PocketFlow/design_pattern/multi... (multi agent, queue) - https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/ here are more advanced examples. Pretty easy to follow imho.

PS: re the observability, yesterday I coded tracing for pocketflow, just need to put it up on github haha

esafak•11mo ago
I don't know why Pierre's post is dead, but I wanted to ask if it is accurate to describe Pixelagent as an MCP-compatible memory layer, and what its competitors are.

If memory is the centerpiece, I suggest leading with it, rather than the ambiguous "Your AI Data Infrastructure".

pierrebrunelle•11mo ago
You can indeed turn anything that you want into an MCP server, e.g. https://github.com/pixeltable/pixeltable-mcp-server.

Pixelagent is a reference implementation for a multimodal agent framework to show that an agent class is easy to build and users should be empowered to build their own from scratch for their use cases.

Regarding Memory, to me it's just about Data Storage, Indexing, Orchestration, and Retrieval and I don't know why we should abstract Memory away from users. Memory will mean so many different things for many use cases.

Let's say you want:

- Working memory: Holds current context and immediate interaction history within the agent's context window -> this is just about passing Q&A pairs to maintain context alongside with roles.

- Episodic memory: Stores specific past experiences and interactions -> this is just about indexing past exchanges and having semantic search on it.

- Semantic memory: Organizes specific knowledge in structured formats -> this is just about building a custom logic (udf) to decide how and what to extract insight from and then retrieve it.

I've implemented them all in this example: https://github.com/pixeltable/pixelbot