ASashp15205·Jun 12, 2026Submission
Guardian Runtime – Track AI agents token usage and enforce API budgets
5 points · Open discussionashp15205
guardian-runtime
Python2026–2026
ashp15205 / guardian-runtime
guardian-runtime
Guardian Runtime sits securely on your machine, acting as a bodyguard for your code. Whenever you use AI tools like Cursor or Claude Code, it intercept every prompt and response locally to stop data leaks and runaway token costs. A zero-latency, local-first runtime firewall for LLMs.
4Distinct people
5Mentions
0Explicit recommenders
21GitHub stars
What to know before exploring
What it is
Guardian Runtime sits securely on your machine, acting as a bodyguard for your code. Whenever you use AI tools like Cursor or Claude Code, it intercept every prompt and response locally to stop data leaks and runaway token costs. A zero-latency, local-first runtime firewall for LLMs.
GitHub
Where it is used
No documented product use has been verified yet.
What people are saying
No recommendation phrase was found in the indexed comments.
No classified warning is attached to this page. Read the discussions before treating silence as approval.
Also in these discussions
No other repository is repeatedly linked in the same discussions.
This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 3:56:07 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by 3-hour interval5 dated mentions
Observed mentions: 2026-06-09 04:19:12 UTC to 2026-06-12 05:56:14 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| Jun 9, 03:00 | 2026-06-09 03:00:00 UTC | 2026-06-09 06:00:00 UTC | 1 | 1 | 0 |
| Jun 9, 06:00 | 2026-06-09 06:00:00 UTC | 2026-06-09 09:00:00 UTC | 0 | 0 | 0 |
| Jun 9, 09:00 | 2026-06-09 09:00:00 UTC | 2026-06-09 12:00:00 UTC | 0 | 0 | 0 |
| Jun 9, 12:00 | 2026-06-09 12:00:00 UTC | 2026-06-09 15:00:00 UTC | 0 | 0 | 0 |
| Jun 9, 15:00 | 2026-06-09 15:00:00 UTC | 2026-06-09 18:00:00 UTC | 1 | 1 | 0 |
| Jun 9, 18:00 | 2026-06-09 18:00:00 UTC | 2026-06-09 21:00:00 UTC | 0 | 0 | 0 |
| Jun 9, 21:00 | 2026-06-09 21:00:00 UTC | 2026-06-10 00:00:00 UTC | 0 | 0 | 0 |
| Jun 10, 00:00 | 2026-06-10 00:00:00 UTC | 2026-06-10 03:00:00 UTC | 0 | 0 | 0 |
| Jun 10, 03:00 | 2026-06-10 03:00:00 UTC | 2026-06-10 06:00:00 UTC | 0 | 0 | 0 |
| Jun 10, 06:00 | 2026-06-10 06:00:00 UTC | 2026-06-10 09:00:00 UTC | 0 | 0 | 0 |
| Jun 10, 09:00 | 2026-06-10 09:00:00 UTC | 2026-06-10 12:00:00 UTC | 0 | 0 | 0 |
| Jun 10, 12:00 | 2026-06-10 12:00:00 UTC | 2026-06-10 15:00:00 UTC | 0 | 0 | 0 |
| Jun 10, 15:00 | 2026-06-10 15:00:00 UTC | 2026-06-10 18:00:00 UTC | 0 | 0 | 0 |
| Jun 10, 18:00 | 2026-06-10 18:00:00 UTC | 2026-06-10 21:00:00 UTC | 0 | 0 | 0 |
| Jun 10, 21:00 | 2026-06-10 21:00:00 UTC | 2026-06-11 00:00:00 UTC | 0 | 0 | 0 |
| Jun 11, 00:00 | 2026-06-11 00:00:00 UTC | 2026-06-11 03:00:00 UTC | 0 | 0 | 0 |
| Jun 11, 03:00 | 2026-06-11 03:00:00 UTC | 2026-06-11 06:00:00 UTC | 0 | 0 | 0 |
| Jun 11, 06:00 | 2026-06-11 06:00:00 UTC | 2026-06-11 09:00:00 UTC | 1 | 1 | 0 |
| Jun 11, 09:00 | 2026-06-11 09:00:00 UTC | 2026-06-11 12:00:00 UTC | 0 | 0 | 0 |
| Jun 11, 12:00 | 2026-06-11 12:00:00 UTC | 2026-06-11 15:00:00 UTC | 0 | 0 | 0 |
| Jun 11, 15:00 | 2026-06-11 15:00:00 UTC | 2026-06-11 18:00:00 UTC | 1 | 1 | 0 |
| Jun 11, 18:00 | 2026-06-11 18:00:00 UTC | 2026-06-11 21:00:00 UTC | 0 | 0 | 0 |
| Jun 11, 21:00 | 2026-06-11 21:00:00 UTC | 2026-06-12 00:00:00 UTC | 0 | 0 | 0 |
| Jun 12, 00:00 | 2026-06-12 00:00:00 UTC | 2026-06-12 03:00:00 UTC | 0 | 0 | 0 |
| Jun 12, 03:00 | 2026-06-12 03:00:00 UTC | 2026-06-12 06:00:00 UTC | 1 | 1 | 0 |
What Hacker News says
5 sourcesLocal firewall for AI Agents that cuts tokens usage and cost by 40–70%
3 points · Open discussionLocal firewall for AI agents – blocks secret leaks and cuts API costs by 40–70%
3 points · Open discussionShow HN: Stop letting Claude Code burn your tokens and leak API keys
3 points · Open discussionShow HN: Built an open-source local firewall for AI coding agents
GitHub: https://github.com/ashp15205/guardian-runtime
Docs: https://ashp15205.github.io/guardian-runtime/
Hi Guys,
I built Guardian Runtime: a local FinOps and security proxy for AI coding agents (like Claude Code, Cursor, and Aider).
You point your agent to localhost:8080 instead of the real LLM API, and it sits in the middle to do three things:
1. Hard Budgets: Auto-kills the agent's internet access if it gets stuck in a retry loop and hits your daily spend limit.
2. Local Scanners: Instantly drops outgoing requests that contain leaked API keys or PII.
3. Terse Mode: Optimizes system prompts to force shorter answers, cutting your API output costs by 40–70%.
It runs entirely on your machine with zero cloud dependency, and supports OpenAI, Anthropic, and Gemini out of the box.
pip install guardian-runtime
I'd love to hear your feedback or
Read the rest
see if you can break it!