Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/firebase/agent-skills/firebase-hosting-basicsnpx skills add firebase/agent-skills --skill firebase-hosting-basicsgit clone --depth 1 https://github.com/firebase/agent-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/firebase/agent-skills/firebase-hosting-basics)<a href="https://agentmods.dev/skills/firebase/agent-skills/firebase-hosting-basics"><img src="https://agentmods.dev/badge/skills/firebase/agent-skills/firebase-hosting-basics.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00092 | $0.00524 |
| Opus 5 | $0.00046 | $0.00262 |
| Sonnet 5 | $0.00018 | $0.00105 |
| Haiku 4.5 | $0.00009 | $0.00052 |
Grade A, and why
firebase-hosting-basics scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
hosting-basics
This skill provides instructions and references for working with Firebase Hosting, a fast and secure hosting service for your web app, static and dynamic content, and microservices.
Overview
Firebase Hosting provides production-grade web content hosting for developers. With a single command, you can deploy web apps and serve both static and dynamic content to a global CDN (content delivery network).
Key Features:
- Fast Content Delivery: Files are cached on SSDs at CDN edges around the world.
- Secure by Default: Zero-configuration SSL is built-in.
- Preview Channels: View and test changes on temporary preview URLs before deploying live.
- GitHub Integration: Automate previews and deploys with GitHub Actions.
- Dynamic Content: Serve dynamic content and microservices using Cloud Functions or Cloud Run.
Hosting vs App Hosting
Choose Firebase Hosting if:
- You are deploying a static site (HTML/CSS/JS).
- You are deploying a simple SPA (React, Vue, etc. without SSR).
- You want full control over the build and deploy process via CLI.
Choose Firebase App Hosting if:
- You are using a supported full-stack framework like Next.js or Angular.
- You need Server-Side Rendering (SSR) or ISR.
- You want an automated "git push to deploy" workflow with zero configuration.
Instructions
1. Configuration (firebase.json)
For details on configuring Hosting behavior, including public directories, redirects, rewrites, and headers, see configuration.md.
2. Deploying
For instructions on deploying your site, using preview channels, and managing releases, see deploying.md.
3. Emulation
To test your app locally:
npx -y firebase-tools@latest emulators:start --only hosting
This serves your app at http://localhost:5000 by default.
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 5d ago First seen · 68 lines · 92 tokens per session scan A bcd0e291ba74
firebase-hosting-basics is a skill published in the GitHub repository firebase/agent-skills (434 stars, last pushed 2d ago), licensed Apache-2.0. It adds 92 tokens to every session and 524 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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