John Niche

Building selectools (Python multi-agent framework) + nv:context (context engineering for AI). Senior ML engineer. Python, LLMs, React, Node.

[John Niche @johnnichev]

@cogumelokombuch @merdestinoincel Frentista só existe porque tem lei que obriga, você têm uma única função, que faça ela direito por favor

[John Niche @johnnichev]

@Allexx420 @merdestinoincel Qual a diferença falar o etanol antes????

[John Niche @johnnichev]

Do you remember when you joined X? I do! #MyXAnniversary --- I didn't until X told me lol, back then it was the lil blue bird instead of an X off course :)

[John Niche @johnnichev]

🚀 Check out my CoderLegion profile & latest post!

🏆 Points: 639 | 🎱 Badges: 3 | 👥 Followers: 2 | 📄 Posts: 1

Latest post: "SELECTOOLS"
Read it here: https://t.co/kf0Xs5TMrj

View my full profile: https://t.co/1r55OQT8Ng

[John Niche @johnnichev]

1.Saturday morning, coffee in hand, revising chapter 3 of my science fiction novel while CI runs.

Any devs here with too many projects for one lifetime?

[Elon Musk @elonmusk]

Neuralink enables those who have lost the ability to speak to speak again

[John Niche @johnnichev]

Impeccable has been truly amazing, check this out >

Subscribe to Impeccable Updates https://t.co/KrT7jAFC4e

[John Niche @johnnichev]

Most AI coding agents fail for a boring reason.
They get fed bad context.
I spent 4 weeks reading 200+ sources on this, built a Claude Code skill that fixes it, and validated it on three production repos.
> Shipping today: nv:context https://t.co/Zvvu11oTKw

[John Niche @johnnichev]

@orinfitzgerald @learnframer undercover

[tani @tanishqxyz]

Tried magnifying with html-in-canvas API

Wow

[John Niche @johnnichev]

@heyshipz Hey there!

[John Niche @johnnichev]

@shvshydv Awesome, yep let's connect

[John Niche @johnnichev]

Why I Built Selectools (and What I Learned Along the Way)

https://t.co/qBtUuR3nFK

[John Niche @johnnichev]

SELECTOOLS: Multi-agent graphs, tool calling, RAG, 50 evaluators, PII redaction. All in one.

https://t.co/mHo5AMhIdI

[John Niche @johnnichev]

@ionleu https://t.co/GQonCfc9YK not a startup but a tool for engineers that work with AI agents! Better than langchain in many aspects, check this out :)

[John Niche @johnnichev]

@trikcode I just launched a langchain/crewai free open source competitor called selectools! https://t.co/GQonCfc9YK is easy to use and has 50 evals, guardrails including PII redaction, cost tracking and visual builder :)

[John Niche @johnnichev]

@trikcode yo

[AA @measure_plan]

html-in-canvas API is shattering my expectations

[John Niche @johnnichev]

Building selectools taught me context engineering the hard way.
I turned what I learned into a separate Claude Code skill: nv:context. 3-minute install.

Works with Claude Code, Cursor, Copilot, Aider. Validated on selectools + 2 other production repos.
Separate Show HN this afternoon. https://t.co/QM3dZoABpS

[John Niche @johnnichev]

LangGraph's interrupt() mechanism re-executes the entire node body on resume. By-design behavior from its checkpoint-replay model. You have to make pre-interrupt work idempotent, place it after interrupt(), or split nodes. It's a leaky abstraction.

selectools handles this differently. Thread:

[John Niche @johnnichev]

Works with OpenAI, Anthropic, Gemini, Ollama. Python 3.9+. Apache-2.0.

pip install selectools

GitHub: https://t.co/6AZ6JwBgqB
Docs: https://t.co/d8lOHoRJYG
Changelog: https://t.co/RPXMQ888MK

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