Antigravity already writes good HTML: task walkthroughs, prototype pages, test results and implementation plans. The hard part is what happens next. A file on your laptop doesn't open properly on a phone, and feedback ends up in a chat thread that Antigravity never sees.
tossithere fixes that. Antigravity runs one command, and the HTML is live at a private link that opens anywhere. People comment on the exact element or sentence they mean, and Antigravity reads every comment, fixes the page and publishes v2 on the same link.
Set it up
You do this once, in Antigravity's agent manager and editor.
- Install the CLI and sign in:
npm install -g tossithere
toss login- Install the tossithere skill. Ask Antigravity:
Install the tossithere skill from https://tossithere.com/skill.md and use it whenever you make HTML for me.
Prefer to keep it in the repository? Copy the instructions from this page instead. Add the instructions to Antigravity's rules for your workspace, or paste them at the start of a task. The agent can then run the commands in its terminal.
That's it. Antigravity now knows how to publish, share, read comments and push new versions.
Publish your first page
Ask Antigravity for something you'd normally get as a wall of text:
Build a prototype of the settings page, then publish it so I can comment from my phone.
Antigravity writes the HTML and publishes it:
toss docs:push settings-prototype.html --json
# -> https://tossithere.com/d/settings-prototype-8fa2The page is private to you. Open it on your laptop or your phone.
Share it and collect comments
When someone else should see it, ask Antigravity to share it, or publish straight into a team workspace:
toss docs:share <docId> --visibility public --allow comment
toss docs:push settings-prototype.html --team <slug>Reading needs no account. Commenting takes a Google sign-in, so every comment has a name on it. Reviewers click any element or highlight any text and type.
Let Antigravity fix it
Tell Antigravity: "Read the comments and fix the page." It runs:
toss comments:list <docId> --unresolved --json
toss docs:push settings-prototype.html --id <docId> --note "what changed"Every comment arrives with the exact markup it points at, so Antigravity edits the right line instead of guessing. The new version goes to the same link, and older versions stay readable with their own comments.
Tips for Antigravity
- Antigravity's agents already produce plans and walkthroughs. Publishing them gives you a link you can share outside the IDE.
- Run several agents in parallel and ask each one to publish its result, so you review links instead of switching workspaces.
- Comments come back with the exact markup, which makes follow-up tasks precise.
