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Stackmint Open-Source Gateway
Local AI agent guardrails, budgets, & circuit breakers.
We help consulting companies and agencies deploy governed AI capabilities for enterprise clients. While building our platform, we realized the biggest missing piece was a reliable execution layer—so we built it ourselves. Today we are open-sourcing Stackmint Gateway: a framework-agnostic Python client that wraps your LangChain agents to enforce strict budgets, Human-in-the-Loop (HITL) gates, and circuit breakers locally.
Hey Product Hunt! 👋 I’m Florian, the founder of Stackmint.
We spend all day helping agencies and consultancies transition from selling "probabilistic AI experiments" to deploying deterministic, governed AI capabilities for their enterprise clients.
While building our enterprise platform (the Stackmint Capability Cloud), we hit a wall. We needed a way to guarantee that underlying agentic workflows wouldn't silently fail, hallucinate past their API budgets, or take destructive actions without human approval.
We realized there was a massive need for a true runtime governance gateway—so we built it, and today we are open-sourcing it for the community.
Meet the Stackmint Gateway (v0.1.0-alpha): It is a framework-agnostic Python client (starting with a native LangChain connector) that lets your developers inject strict governance directly into the runtime.
What it enforces locally today:
🛑 Circuit Breakers: Automatically halts execution if an underlying agent fails repeatedly, preventing infinite loops.
💸 Budget Guardrails: Tracks local token/cost usage and blocks execution if it exceeds your defined ceiling.
🙋 Human-In-The-Loop (HITL): Wraps specific high-risk tools and automatically pauses the runtime to request terminal/callback approval before executing.
🛡️ Fail-Open Design: It acts as a safety net. If telemetry fails, your runtime doesn't break.
The Enterprise Vision: For agencies and SIs who want to take this to the next level, our Enterprise Capability Cloud syncs this gateway to a centralized workspace with Stripe billing splits, allowing you to package and monetize these governed capabilities as recurring revenue.
I’ll be hanging out in the comments all day! I would love feedback from developers on the open-source Python SDK, or to hear from agency founders about what AI workflows you are trying to productionize right now.
About Stackmint Open-Source Gateway on Product Hunt
“Local AI agent guardrails, budgets, & circuit breakers.”
Stackmint Open-Source Gateway was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #62 on the daily leaderboard. We help consulting companies and agencies deploy governed AI capabilities for enterprise clients. While building our platform, we realized the biggest missing piece was a reliable execution layer—so we built it ourselves. Today we are open-sourcing Stackmint Gateway: a framework-agnostic Python client that wraps your LangChain agents to enforce strict budgets, Human-in-the-Loop (HITL) gates, and circuit breakers locally.
On the analytics side, Stackmint Open-Source Gateway competes within Open Source, Artificial Intelligence and GitHub — topics that collectively have 580.7k followers on Product Hunt. The dashboard above tracks how Stackmint Open-Source Gateway performed against the three products that launched closest to it on the same day.
Who hunted Stackmint Open-Source Gateway?
Stackmint Open-Source Gateway was hunted by Florian Boymond. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Stackmint Open-Source Gateway including community comment highlights and product details, visit the product overview.
Florian Boymond
Hey Product Hunt! 👋 I’m Florian, the founder of Stackmint.
We spend all day helping agencies and consultancies transition from selling "probabilistic AI experiments" to deploying deterministic, governed AI capabilities for their enterprise clients.
While building our enterprise platform (the Stackmint Capability Cloud), we hit a wall. We needed a way to guarantee that underlying agentic workflows wouldn't silently fail, hallucinate past their API budgets, or take destructive actions without human approval.
We realized there was a massive need for a true runtime governance gateway—so we built it, and today we are open-sourcing it for the community.
Meet the Stackmint Gateway (v0.1.0-alpha): It is a framework-agnostic Python client (starting with a native LangChain connector) that lets your developers inject strict governance directly into the runtime.
What it enforces locally today:
🛑 Circuit Breakers: Automatically halts execution if an underlying agent fails repeatedly, preventing infinite loops.
💸 Budget Guardrails: Tracks local token/cost usage and blocks execution if it exceeds your defined ceiling.
🙋 Human-In-The-Loop (HITL): Wraps specific high-risk tools and automatically pauses the runtime to request terminal/callback approval before executing.
🛡️ Fail-Open Design: It acts as a safety net. If telemetry fails, your runtime doesn't break.
The Enterprise Vision: For agencies and SIs who want to take this to the next level, our Enterprise Capability Cloud syncs this gateway to a centralized workspace with Stripe billing splits, allowing you to package and monetize these governed capabilities as recurring revenue.
I’ll be hanging out in the comments all day! I would love feedback from developers on the open-source Python SDK, or to hear from agency founders about what AI workflows you are trying to productionize right now.