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Show HN: A test harness that blocks unsafe AI actions before execution

2•celestinestudio•1h ago
I built a small test harness that evaluates AI actions before they execute.

Instead of relying only on prompts or output filtering, this introduces an authorization layer that evaluates whether an AI action should be allowed before it runs.

Each requested action is analyzed for signals such as:

• financial actions • external communications • data exports • system modification • destructive operations

Based on the detected signals and required authorization layers, the harness determines whether the action should PASS or DENY.

Example output:

Running 14 tests...

[1/14] financial_commitment -> DENY [2/14] send_external_email -> DENY [3/14] deploy_to_production -> DENY [14/14] general_information -> PASS

Every evaluation produces an auditable record including:

• detected signals • required authorizations • PASS / DENY decision

The goal is to explore what a deterministic execution governance layer might look like for AI systems interacting with real environments.

Demo video walkthrough: https://www.linkedin.com/feed/update/urn:li:activity:7436787... Repository:

https://github.com/celestinestudiosllc/ai-action-authorizati...

Curious how others building agent systems or AI runtimes are approaching execution authorization.

Oops, You Wrote a Database

https://dx.tips/oops-database
1•tosh•3m ago•0 comments

Engram – A distributed memory system for AI agents, with extensible architecture

https://vincents-ai.github.io/engram/
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Show HN: Mingle – find and connect with people, like LinkedIn but in your chat

https://github.com/aeoess/mingle-mcp
1•Tima_fey•4m ago•0 comments

Current and former Block workers say AI can't do their jobs

https://www.theguardian.com/technology/2026/mar/08/block-ai-layoffs-jack-dorsey
4•devonnull•6m ago•0 comments

PHP-rnet – a PHP extension that mimics real browser TLS fingerprints

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A small CLI for stopping Git worktrees from fighting over ports

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Svelte Best Practices

https://svelte.dev/docs/svelte/best-practices
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Lowdown can translate Markdown to an mdoc manpage

https://kristaps.bsd.lv/lowdown/mdoc.html
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FSC Age Verification Bill Tracker

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1•muyuu•11m ago•0 comments

Disney+ Teases Creator-Driven Content as It Launches Vertical Video Feature

https://www.hollywoodreporter.com/business/digital/disney-creator-content-launches-vertical-video...
1•andsoitis•13m ago•0 comments

The FermAI Paradox: Agents Need Their IDE Moment

https://docs.ctx.rs/blog/the-fermai-paradox
3•ripped_britches•14m ago•0 comments

New F1 regulations take bravery out of the sport, drivers say

https://www.reuters.com/sports/formula1/new-f1-regulations-take-bravery-out-sport-drivers-say-202...
2•samizdis•17m ago•0 comments

Local Agents with Llama.cpp and Pi

https://huggingface.co/docs/hub/agents-local
2•kristianpaul•17m ago•0 comments

Show HN: Aurion OS – A 32-bit GUI operating system written from scratch in C

https://github.com/Luka12-dev/AurionOS
6•Luka12-dev•18m ago•1 comments

Ask HN: Rethinking SaaS architecture for AI-native systems

2•RobertSerber•18m ago•1 comments

Weak Cyberdefenses Threaten U.S. Tech Dominance

https://www.foreignaffairs.com/united-states/americas-endangered-ai
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Anthropic invests $100M into the Claude Partner Network

https://www.anthropic.com/news/claude-partner-network
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gstack – Garry Tan's Claude Code Setup

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The Tao of Kung Fu: The Undiscerning Mind [video]

https://www.youtube.com/watch?v=Q5J4nHdr134
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Is MacBook Neo "The One"? [video]

https://www.youtube.com/watch?v=AwuKCgSgcR4
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WebZero – a web server that serves 5k req/SEC on a 2001 Pentium III

https://github.com/davitotty/webzero
2•Davitotty1•22m ago•1 comments

'The shine has been taken off': Dubai faces existential threat

https://www.theguardian.com/world/2026/mar/11/the-shine-has-been-taken-off-dubai-faces-existentia...
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Speculative Branching Cache

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Valea: An AI-native systems programming language

https://github.com/hvoetsch/valea
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TrueTime Meetings – open-source video meetings, built for customization

https://www.red5.net/truetime/meetings/
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Mapping the Forests with Precision:Introducing Canopy Height Maps

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2•tzury•27m ago•0 comments

Axiom Raises $200M Series A at a $1.6B Valuation

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1•doppp•27m ago•0 comments

My PostgreSQL database got nuked lol

https://akselmo.dev/posts/they-broke-my-server/
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The Bitter Lesson Has No Utility Function

https://gfrm.in/posts/bitter-lesson-missing-half/index.html
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Show HN: blunder.clinic, realistic daily chess puzzles

https://blunder.clinic/
2•mcyc•29m ago•0 comments