Hacker News: fennecthttps://news.ycombinator.com/user?id=fennectHacker News RSShttps://hnrss.org/hnrss v2.1.1Tue, 06 Oct 2026 02:07:53 +0000<![CDATA[New comment by fennect in "Agents don't need memory, they need documentation"]]>You could try https://github.com/ioni-dev/mati the constant changes in reasoning effort in consumer models can break things and its more dangerous for devs that relay to much on agents.

I’m the author of the project.

]]>Sun, 04 Oct 2026 18:02:55 +0000https://news.ycombinator.com/item?id=49956263fennecthttps://news.ycombinator.com/item?id=49956263https://news.ycombinator.com/item?id=49956263<![CDATA[Show HN: Built a local guardrail layer for Claude Code]]>I built Mati to give me more control over what Claude Code and Codex are allowed to do. Many important product constraints live in an engineer's or product person's head.

This isn't new for engineers. We've always had important constraints that only certain people know about, but with coding agents it gets worse because we can now delegate a lot more, sometimes without realizing how much context the agent is missing.

Then we delegate changes and the agent implements a change that looks reasonable but breaks some hidden constraint, hurts performance, exposes data, or does something destructive. It’s a local, Apache-2.0 licensed tool. It works with Claude Code and Codex, and also exposes MCP and CLI interfaces.

The name comes from a Nahuatl verb meaning “to know” or “to think.”

It’s probably a bit over-engineered.

Anyway, sharing it here in case it’s useful to someone.

Comments URL: https://news.ycombinator.com/item?id=49767823

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]]>Sat, 19 Sep 2026 16:22:42 +0000https://github.com/ioni-dev/matifennecthttps://news.ycombinator.com/item?id=49767823https://news.ycombinator.com/item?id=49767823