AgentGuard
The AI agent firewall: catches hijacks that pass every rule
AgentGuard launched on July 23, 2026 with 3 votes, #8,766 of 24,623 launches that month and more than 50% of that year's launches.
What it does
Spend limits cap the money. They can't see that your agent's intent changed. A €300 payment to an allowlisted merchant, under every cap. Every rule passes — and GPT-5.6 holds it anyway, because gift cards aren't the API credits the agent was authorized to buy. AgentGuard adds a GPT-5.6 intent firewall between your agents and the real world, plus a human approval gate, a tamper-evident ledger you can break yourself, and an MCP server any agent can plug into. Live demo, no signup, no API key.
A GPT-5.6 intent layer that catches hijacked agents static rules can't see. Policy floor, intent firewall, tamper-evident audit chain.
The firewall for AI agents — a GPT-5.6 intent layer that catches hijacked agents static rules can't see. Every high-risk action — payments, email, data, APIs, shell — is judged against the mission before it executes. Agents read emails, webpages, invoices, and documents to decide what to do. A poisoned document can redirect the agent without changing its permissions. Gartner predicts that by 2028, 1 in 4 enterprise breaches will be traced back to AI agent abuse — from both external and malicious internal actors. The agent registers its purpose. Every proposed action is judged against that declared mission. A deterministic policy floor checks caps, allowlists, and integer cents. GPT-5.6…from agentguard-dusky.vercel.app
Does a similar job
all alternatives →
AgentGuard – Auto-kill AI agents before they burn through your budget2025 · github.com · ▲47Your AI agent hits an infinite loop and racks up $2000 in API charges overnight. This happens weekly to AI developers. AgentGuard monitors API calls in real-time and automatically kills your process when it hits your budget limit. How it works: Add 2 lines to any AI project: const agentGuard = require('agent-guard'); await agentGuard.init({ limit: 50 }); // $50 budget // Your existing code runs unchanged const response = await openai.chat.completions.create({...}); // AgentGuard tracks costs automatically When your code hits $50 in API costs, AgentGuard stops…
Agentcard for companiesJul 2026 · agentcard.sh · ▲189Agentcard gives every user of your product a wallet their agent can spend from. Cards go in once. Purchases come out priced, approved, and paid.
delegareApr 2026 · delegare.dev · ▲70Hi guys, am building SecureLend.ai and when working on our underwriting agents (free trial, paid after) I had issues with seamless payment options. Of course I looked at x402 which I believe is a great protocol but not a fan of a) sharing private keys with the agent b) having a human in the loop or c) similar workaround e.g. pre-funded wallets So I started building out a solution. For my use case it was important to not only have stablecoins but also a fiat rail which is now implemented using Stripe. Initially I build a mandate system internally but am very glad and big shoutout to the guys…

Agent Browser ShieldJun 2026 · github.com · ▲109I've been experimenting with Claude Code, ChatGPT Agent, and OpenClaw to perform more open-ended tasks for me online. A big blocker I've hit on shopping and research tasks is the agent getting a key piece of info wrong. For example, in one case, my agent decided to add a brand I don't like to the cart because the site flagged it as almost sold out The HN crowd is probably pretty aware of the threats and can avoid them while browsing. But what about their agents? I tried prompting, but it was ineffective, because once the AI saw the threat, it polluted/distracted its context Looking at…

More ai this month
the category →



Paintings by AI models: programs run through a simulation of oil paint.
AI · 20d ago · stillwet.art

PixVerse R2▲381A real-time world model you can explore and change
AI · 29d ago · world.pixverse.video
Source: Product Hunt launch ↗
Launched alongside, July 2026
the whole month →- IR
I might be the only SRE on Earth with his own bowling center. It's a more in-depth gig than you'd think. My family and I bought an abandoned 8-lane bowling center in the rural mid-west. In our small town there weren't many recreation options for families. You've heard of a food desert? This is an R&R desert. It had been abandoned for a good reason. The roof leaks, the electrical system was constantly surging, and my 70-year-old bowling equipment (still) doesn't work perfectly. The system that keeps your score is particularly interesting to me. It's the thing you watch during your game, but…
Life & fun · Jul 2026

18 Words▲1,160Play 18 Words, the free daily word puzzle. The official home is 18words.com. Tap Play now to open today
Life & fun · Jul 2026 · 18words.com
- BA
Over the past few months, our team has been building more and more slidedecks using web frontend technologies with coding harnesses like Claude Code, but a common complaint is to make even small edits we need to edit the code either manually or via the harness. To avoid this loop, I ended up creating Bento, a single HTML file with everything you need in a slide tool including animations and shared editing. There's no install or cloud login, everything works offline. The default deck is around 560 KB and it doesn't need to fetch anything once you got it. Open it in a browser and then you can…
Dev tools · Jul 2026 · bento.page

A few days ago I found myself trying out GLM 5.2 and was really positively impressed. The capabilities and security I was getting from this LLM are similar to those I've gotten from models like Claude or GPT, and this really surprised me. But then I thought, "I wonder how it would work on a normal computer like mine," and above all, "I wonder if it would work without going into OOM on a computer like mine." So I started working with the help of agents to test this possibility. I started converting the model to int4, understanding MTP usage, and if possible implementing DSA for long context.…
AI · Jul 2026 · github.com
OpenSEO▲928Hello! For the last 2 months, I've been building OpenSEO. It's a user friendly UI wrapping the DataForSEO API which has high quality SEO data for keywords, backlinks, AI SEO and competitor research. Instead of paying $100+ per month, you buy DataForSEO credits and pay only for usage. The coolest thing about the project so far has been hearing about what people are building on top of it. People are using coding agents to quickly integrate with Google Search Console, Google Ads and building their own AI SEO and reporting features. Many were already building their own custom solutions around…
Dev tools · Jul 2026 · openseo.so