frontpage.
newsnewestaskshowjobs

Made with ♥ by @iamnishanth

Open Source @Github

fp.

Open in hackernews

Show HN: MemState – Transactional, type-safe memory for AI agents (SQLite/Redis)

https://github.com/scream4ik/MemState
1•scream4ik•52m ago
I wanted to share MemState, an open-source library I've been building for strict agent state management.

It acts as a Git-like layer for Python agents: unlike standard vector memory, it enforces Pydantic schemas and supports transactional rollbacks (Time Travel) to prevent state corruption.

Key technical features:

* Strict Schemas: Uses Pydantic to validate memory on write. If an LLM tries to save a string into an int field, the transaction fails before corruption happens.

* Time Travel: Every change is an append-only transaction. You can call memory.rollback(1) to undo an agent's hallucination.

* Constraints: Enforce logic like Singleton facts (e.g., only one "User Profile" per session).

* No Vectors required: It uses SQLite's JSON1 extension for structured filtering, which is faster and deterministic for state lookups.

It includes a native checkpointer for LangGraph, so you can persist agent threads to SQLite with full history auditability.

It's open source (Apache 2.0). Would love to hear your feedback on the architecture!

Library of Time

https://libraryoftime.xyz/
1•bookofjoe•2m ago•0 comments

What Are Lie Groups?

https://www.quantamagazine.org/what-are-lie-groups-20251203/
2•ibobev•4m ago•0 comments

Diocletian's Cabbages – The Abdication of an Emperor

https://historyhogs.com/diocletians-cabbages/
1•dsego•4m ago•0 comments

You Are (Probably) Measuring Time Wrong

https://www.counting-stuff.com/why-you-are-probably-measuring-time-wrong-why-do-we-need-to-use-su...
1•speckx•4m ago•0 comments

Minimising Screen Brightness with Ubuntu

https://blog.georgovassilis.com/2025/12/03/minimising-screen-brightness-in-ubuntu/
1•ggeorgovassilis•5m ago•0 comments

Using ClickHouse for L7 DDoS and Bot Traffic Analytics with Tempesta FW

https://tempesta-tech.com/blog/defending-against-l7-ddos-and-web-bots-with-tempesta-fw/
1•krizhanovsky•6m ago•1 comments

Essentials of Compilation: An Incremental Approach (2020)

https://swatson555.github.io/essentials-of-compilation-support/
1•swatson741•6m ago•0 comments

The Market as God (1999)

https://www.theatlantic.com/magazine/archive/1999/03/the-market-as-god/306397/
1•measurablefunc•7m ago•0 comments

Man charged with theft over claims he swallowed $19k Fabergé egg

https://www.bbc.com/news/articles/c7vm754r80vo
1•onemoresoop•11m ago•0 comments

The Invisible Cost: From Creator to Consumer

https://edwardnoaland.substack.com/p/the-invisible-cost-from-creator-to
2•edwardnoaland•12m ago•0 comments

Vanbi

https://xeiaso.net/blog/vanbi-01-08-2019/
1•xena•12m ago•0 comments

Conflict with fathers and friends speeds up aging

https://news.virginia.edu/content/conflict-fathers-and-friends-speeds-aging
1•PaulHoule•12m ago•0 comments

Search for long-missing Malaysia Airlines flight MH370 to resume

https://www.bbc.com/news/articles/cy7v077dm0po
1•onemoresoop•13m ago•0 comments

Random Gods song in ORCA (2D programming language) [video]

https://www.youtube.com/watch?v=mxr8Dtw2R5w
1•ludicrousdispla•14m ago•1 comments

The Value Story Framework (2020)

https://www.reifyworks.com/writing/2020-10-14-introducing-the-vsf
1•mooreds•16m ago•0 comments

The only winning move is not to play

https://gregg.io/the-only-winning-move
2•AIBytes•16m ago•0 comments

Kalshi raises $1B at $11B valuation, doubling value in under two months

https://techcrunch.com/2025/12/02/kalshi-raises-1b-at-11b-valuation-doubling-value-in-under-two-m...
2•ryan_j_naughton•17m ago•0 comments

What Is Generative UI?

https://tambo.co/blog/posts/what-is-generative-ui
2•grouchy•18m ago•0 comments

Show HN: Anvitra – Human like search (public beta)

https://anvitra.ai/campaigns/public-beta/
1•melvinodsa•18m ago•0 comments

Teaching an LLM a Niche Diagraming Language

https://www.huy.rocks/everyday/12-01-2025-ai-teaching-an-llm-a-niche-diagraming-language
3•todsacerdoti•18m ago•0 comments

HunyuanOCR by Tencent: A 1B Parameter End to End OCR Expert VLM

https://huggingface.co/tencent/HunyuanOCR
4•maxloh•19m ago•0 comments

Turtletoy

https://turtletoy.net/
1•ustad•19m ago•0 comments

Ask HN: Selling one's self

2•it_is_beautiful•20m ago•1 comments

Workflow Automation: Letting AI Write Workflow Code

https://blog.codesolvent.com/2025/12/workflow-automation-letting-ai-write.html
1•Edmond•20m ago•0 comments

'Carspreading' is on the rise – and not everyone is happy about it

https://www.bbc.co.uk/news/articles/cy7vdvl2531o
5•helsinkiandrew•20m ago•1 comments

New Interview - Michael Burry from the Big Short Speaks [video]

https://www.youtube.com/watch?v=nsE13fvjz18
1•skx001•20m ago•0 comments

Show HN: TabPFN Scaling Mode – Tabular Foundation Model on millions of rows

https://priorlabs.ai/technical-reports/large-data-model
1•onasta•20m ago•0 comments

Toward a Working Definition of Paperclip-Punk

https://www.a16z.news/p/toward-a-working-definition-of-paperclip
1•gk1•21m ago•0 comments

LLMs as a new alien subset of all possible embodied intelligences

https://advanced.onlinelibrary.wiley.com/doi/10.1002/aisy.202401034
1•inshard•23m ago•0 comments

Devtools Just Became AI Infrastructure

https://www.nibzard.com/bun-acquisition
1•nkko•24m ago•0 comments