Hacker News: obiefernandez

Show HN: Manceps – Ruby Client for the Model Context Protocol (MCP)

obiefernandez — Tue, 07 Apr 2026 01:49:13 +0000

I built this because existing Ruby options for MCP either don't handle persistent connections properly (MCP servers bind sessions to TCP connections) or couple you to a specific LLM framework.

Manceps is a pure protocol client. Two transports (Streamable HTTP and stdio), built-in auth (bearer, API key, experimental OAuth 2.1 with PKCE), and full 2025-11-25 spec support including protocol negotiation, elicitation, structured output, and notifications.

It uses httpx under the hood for connection persistence. No LLM opinions -- just MCP.

Ruby >= 3.4, MIT licensed.

Comments URL: https://news.ycombinator.com/item?id=47669780

Points: 1

# Comments: 0

New comment by obiefernandez in "Issue Tracking Is Dead"

obiefernandez — Tue, 24 Mar 2026 19:25:23 +0000

At ZAR once we had pervasive ingestion into an organization-wide knowledge graph in place and working well, the next step was to ditch Linear and replace it with a homegrown experiment tracking system that focuses all product engineers on empirical data and scientific method applied to how we prioritize work.

It's the only way to actually encourage high-agency, high-ownership behavior. Working from a backlog is actively counterproductive!

Levels of 5-MeO-DMT

obiefernandez — Tue, 24 Mar 2026 03:13:46 +0000

Article URL: https://heart.qri.org/retreats/2023-canada/andres-gomez-emilsson/levels

Comments URL: https://news.ycombinator.com/item?id=47498243

Points: 2

# Comments: 0

Cursor caught stealing Kimi's model calling it their own, again

obiefernandez — Fri, 20 Mar 2026 17:27:19 +0000

Article URL: https://twitter.com/aakashgupta/status/2035003184192630985

Comments URL: https://news.ycombinator.com/item?id=47457778

Points: 5

# Comments: 0

Enclave gem: Mega useful if you're building agents on Ruby on Rails

obiefernandez — Fri, 27 Feb 2026 23:47:40 +0000

Article URL: https://github.com/rubymonolith/enclave

Comments URL: https://news.ycombinator.com/item?id=47187712

Points: 1

# Comments: 0

New comment by obiefernandez in "Show HN: Declarative open-source framework for MCPs with search and execute"

obiefernandez — Tue, 24 Feb 2026 22:32:48 +0000

I’m gonna build this into Ruby on Rails.

I have lots of the code proven out already https://medium.com/zar-engineering/code-mode-mcp-ac17c2a1038...

New comment by obiefernandez in "Does anyone use CrewAI or LangChain anymore?"

obiefernandez — Tue, 24 Feb 2026 03:13:25 +0000

No. They suck.

It might be time to say goodbye to HTML inputs

obiefernandez — Tue, 24 Feb 2026 03:11:19 +0000

Article URL: https://medium.com/zar-engineering/it-might-be-time-to-say-goodbye-to-html-inputs-f37ccf434cc3

Comments URL: https://news.ycombinator.com/item?id=47132396

Points: 3

# Comments: 1

Code Mode MCP: Practical application example with immediate benefits

obiefernandez — Sun, 22 Feb 2026 16:31:15 +0000

Article URL: https://medium.com/zar-engineering/code-mode-mcp-ac17c2a1038b

Comments URL: https://news.ycombinator.com/item?id=47112352

Points: 1

# Comments: 0

New comment by obiefernandez in "How I use Claude Code: Separation of planning and execution"

obiefernandez — Sun, 22 Feb 2026 02:43:21 +0000

My colleague swears by his DHH claude skill https://danieltenner.com/dhh-is-immortal-and-costs-200-m/

New comment by obiefernandez in "A16z partner says that the theory that we’ll vibe code everything is wrong"

obiefernandez — Sat, 21 Feb 2026 22:17:10 +0000

I just recreated most of Linear for my company in a few days. Making it hyper specific to what we want (metrics driven, lean startup style).

All state changes are made with MCP so it saved me from having to spend time on any forms and most interactions other than filtering searching sorting etc.

Means we will be ditching Linear soon.

I know I’m an outlier but this sort of thing will get more common.