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h5i

Working

An open-source red-teaming browser for AI agents

What it's for

  • let an agent browse a web app under sandbox limits
  • inspect and replay HTTP from an agent session
886 GitHub starsPushed Install on your machine155 checksDeveloper utilities
Open h5iSourceSite checked h5i.devLast change recorded

We have checked the project site of h5i 155 times since 15 Sept 2026, and the site answered every time. The site's visible text last changed on 28 Oct 2026.

What it does

h5i is an open-source browser built in Rust. The page says agents can automate pages and control HTTP to test web apps, with sandboxing and auditable sessions. Install is a curl script.

Others that do this

Each answered its most recent check.

Looking for something else?

What stands out

  • No account required
  • Free
  • Source is public

What we checked

  • App accessible

    The project site answered. That is not the installed tool running.

  • Page rendered

    A picture of the project site is not the installed tool rendering.

  • Screenshot kept

    We captured a picture of the page.

  • Looked at by an agent

    An agent reviewed it. That is not a person.

Looked
9

9 browsers

Opened
25

25 browsers

Checks
155

155 checks

Watching
0

Nobody yet

Browsers on this site, not verified people.

Screenshot of h5i
Screenshot from our last capture

Development

8 snapshots kept

Active

Commits landed in the last 90 days.

+241 stars since we started watching.

Evidence

Each bar is one request to the project's own site

This one is installed and run on your own machine, so what we re-check is the project’s site — whether it is still published and still reachable. We cannot tell you from here that the tool itself runs.

Checks
155
Working · last 40
100%
Median response
205ms
Watching since
15 Sept 2026

Of the last 40 checks, 40 answered (100%); the latest was on . Median response 205 ms. Watching since .

Activity

Watching since
Last content change
4 days ago
Unchanged for
4 days
Certificate expires
in 51 days
  • The page content changed4 days ago
  • The page content changed9 days ago
  • The page content changed11 days ago
  • The page content changed12 days ago
  • The page content changed13 days ago
  • The page content changed13 days ago
  • The page content changed14 days ago
  • The page content changed16 days ago
  • The page content changed20 days ago
  • The page content changed21 days ago
  • The page content changed26 days ago
  • The page content changed27 days ago
  • The page content changed28 days ago
  • The page content changed28 days ago
  • The page content changed1 month ago
  • The page content changed1 month ago
  • The page content changed1 month ago
  • The TLS certificate was renewed1 month ago
  • The page content changed1 month ago
  • Its embedding policy changed1 month ago

How we track changes

What people say

No reviews yet.

Embed this status

For a README. It updates on every check.

h5i — still works
[![h5i — still works](https://itstillworks.app/api/badge/h5i)](https://itstillworks.app/verify/h5i)