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Top stories from https://news.ycombinator.com (with 100+ score) Contribute to the development here: https://github.com/phil-r/hackernewsbot Also check https://t.me/designer_news Contacts: @philr
SQLite JSON at Full Index Speed Using Generated Columns (Score: 158+ in 4 hours)
Link: https://readhacker.news/s/6Hka2
Comments: https://readhacker.news/c/6Hka2
He set out to walk around the world. After 27 years, his quest is nearly over (❄️ Score: 152+ in 4 days)
Link: https://readhacker.news/s/6GYGc
Comments: https://readhacker.news/c/6GYGc
4 billion if statements (2023) (❄️ Score: 150+ in 5 days)
Link: https://readhacker.news/s/6GVTL
Comments: https://readhacker.news/c/6GVTL
CRISPR fungus: Protein-packed, sustainable, and tastes like meat (Score: 154+ in 9 hours)
Link: https://readhacker.news/s/6HiMF
Comments: https://readhacker.news/c/6HiMF
Nested Learning: A new ML paradigm for continual learning (❄️ Score: 150+ in 4 days)
Link: https://readhacker.news/s/6GYr9
Comments: https://readhacker.news/c/6GYr9
Nokia N900 Necromancy (Score: 151+ in 5 hours)
Link: https://readhacker.news/s/6HiDB
Comments: https://readhacker.news/c/6HiDB
An SVG is all you need (Score: 151+ in 6 hours)
Link: https://readhacker.news/s/6HhC9
Comments: https://readhacker.news/c/6HhC9
Programmers and software developers lost the plot on naming their tools (Score: 150+ in 7 hours)
Link: https://readhacker.news/s/6Hhfy
Comments: https://readhacker.news/c/6Hhfy
Denial of service and source code exposure in React Server Components (🔥 Score: 151+ in 3 hours)
Link: https://readhacker.news/s/6HhVn
Comments: https://readhacker.news/c/6HhVn
See also: https://blog.cloudflare.com/react2shell-rsc-vulnerabilities-..., https://nextjs.org/blog/security-update-2025-12-11
UK House of Lords attempting to ban use of VPNs by anyone under 16 (🔥 Score: 153+ in 2 hours)
Link: https://readhacker.news/s/6HhS4
Comments: https://readhacker.news/c/6HhS4
French supermarket's Christmas advert is worldwide hit (without AI) [video] (Score: 151+ in 8 hours)
Link: https://readhacker.news/s/6Hg6V
Comments: https://readhacker.news/c/6Hg6V
Litestream VFS (🔥 Score: 151+ in 3 hours)
Link: https://readhacker.news/s/6HhdQ
Comments: https://readhacker.news/c/6HhdQ
Days since last GitHub incident (🔥 Score: 154+ in 2 hours)
Link: https://readhacker.news/s/6HgVy
Comments: https://readhacker.news/c/6HgVy
GPT-5.2 (🔥 Score: 154+ in 1 hour)
Link: https://readhacker.news/s/6Hhfe
Comments: https://readhacker.news/c/6Hhfe
Nimony (Nim 3.0) Design Principles (❄️ Score: 150+ in 1 week)
Link: https://readhacker.news/s/6GBhG
Comments: https://readhacker.news/c/6GBhG
The Tor Project is switching to Rust (🔥 Score: 156+ in 2 hours)
Link: https://readhacker.news/s/6Hk3z
Comments: https://readhacker.news/c/6Hk3z
The tiniest yet real telescope I've built (Score: 153+ in 6 hours)
Link: https://readhacker.news/s/6HjtM
Comments: https://readhacker.news/c/6HjtM
After 27 years within budget Austria open 6thlongest railway tunnel in the world (🔥 Score: 160+ in 2 hours)
Link: https://readhacker.news/s/6HjPz
Comments: https://readhacker.news/c/6HjPz
Google de-indexed Bear Blog and I don't know why (Score: 153+ in 8 hours)
Link: https://readhacker.news/s/6HiPS
Comments: https://readhacker.news/c/6HiPS
Terrain Diffusion: A Diffusion-Based Successor to Perlin Noise (Score: 150+ in 1 day)
Link: https://readhacker.news/s/6Hd3C
Comments: https://readhacker.news/c/6Hd3C
Show HN: Sim – Apache-2.0 n8n alternative (Score: 152+ in 9 hours)
Link: https://readhacker.news/s/6Hh4u
Comments: https://readhacker.news/c/6Hh4u
Hey HN, Waleed here. We're building Sim (https://sim.ai/), an open-source visual editor to build agentic workflows. Repo here: https://github.com/simstudioai/sim/. Docs here: https://docs.sim.ai.
You can run Sim locally using Docker, with no execution limits or other restrictions.
We started building Sim almost a year ago after repeatedly troubleshooting why our agents failed in production. Code-first frameworks felt hard to debug because of implicit control flow, and workflow platforms added more overhead than they removed. We wanted granular control and easy observability without piecing everything together ourselves.
We launched Sim [1][2] as a drag-and-drop canvas around 6 months ago. Since then, we've added:
- 138 blocks: Slack, GitHub, Linear, Notion, Supabase, SSH, TTS, SFTP, MongoDB, S3, Pinecone, ...
- Tool calling with granular control: forced, auto
- Agent memory: conversation memory with sliding window support (by last n messages or tokens)
- Trace spans: detailed logging and observability for nested workflows and tool calling
- Native RAG: upload documents, we chunk, embed with pgvector, and expose vector search to agents
- Workflow deployment versioning with rollbacks
- MCP support, Human-in-the-loop block
- Copilot to build workflows using natural language (just shipped a new version that also acts as a superagent and can call into any of your connected services directly, not just build workflows)
Under the hood, the workflow is a DAG with concurrent execution by default. Nodes run as soon as their dependencies (upstream blocks) are satisfied. Loops (for, forEach, while, do-while) and parallel fan-out/join are also first-class primitives.
Agent blocks are pass-through to the provider. You pick your model (OpenAI, Anthropic, Gemini, Ollama, vLLM), and and we pass through prompts, tools, and response format directly to the provider API. We normalize response shapes for block interoperability, but we're not adding layers that obscure what's happening.
We're currently working on our own MCP server and the ability to deploy workflows as MCP servers. Would love to hear your thoughts and where we should take it next :)
[1] https://news.ycombinator.com/item?id=43823096
[2] https://news.ycombinator.com/item?id=44052766
The Walt Disney Company and OpenAI Partner on Sora (Score: 155+ in 11 hours)
Link: https://readhacker.news/s/6Hgcp
Comments: https://readhacker.news/c/6Hgcp
https://www.cnbc.com/2025/12/11/disney-openai-sora-character...
My productivity app is a never-ending .txt file (2020) (Score: 153+ in 5 hours)
Link: https://readhacker.news/s/6HhDx
Comments: https://readhacker.news/c/6HhDx
Rivian Unveils Custom Silicon, R2 Lidar Roadmap, and Universal Hands Free (Score: 152+ in 4 hours)
Link: https://readhacker.news/s/6HhhA
Comments: https://readhacker.news/c/6HhhA
Going Through Snowden Documents, Part 1 (🔥 Score: 150+ in 3 hours)
Link: https://readhacker.news/s/6Hhsn
Comments: https://readhacker.news/c/6Hhsn
EFF launches Age Verification Hub (Score: 152+ in 1 day)
Link: https://readhacker.news/s/6HdBF
Comments: https://readhacker.news/c/6HdBF
Also: We built a resource hub to fight back against age verification https://www.eff.org/deeplinks/2025/12/age-verification-comin...
Craft software that makes people feel something (Score: 150+ in 6 hours)
Link: https://readhacker.news/s/6Hg8u
Comments: https://readhacker.news/c/6Hg8u
GPT-5.2 (🔥 Score: 156+ in 1 hour)
Link: https://readhacker.news/s/6HhgL
Comments: https://readhacker.news/c/6HhgL
System card: https://cdn.openai.com/pdf/3a4153c8-c748-4b71-8e31-aecbde944...
Things I want to say to my boss (🔥 Score: 152+ in 2 hours)
Link: https://readhacker.news/s/6HgRu
Comments: https://readhacker.news/c/6HgRu
The Cost of a Closure in C (Score: 150+ in 10 hours)
Link: https://readhacker.news/s/6HfgF
Comments: https://readhacker.news/c/6HfgF