Borrowing it
Nothing to install: this file belongs to iusztinpaul/designing-real-world-ai-agents-workshop. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/iusztinpaul/designing-real-world-ai-agents-workshop/main/.agents/skills/developing-with-streamlit/skills/building-streamlit-multipage-apps/SKILL.mdgit clone --depth 1 https://github.com/iusztinpaul/designing-real-world-ai-agents-workshopWrote 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/iusztinpaul/designing-real-world-ai-agents-workshop/building-streamlit-multipage-apps)<a href="https://agentmods.dev/skills/iusztinpaul/designing-real-world-ai-agents-workshop/building-streamlit-multipage-apps"><img src="https://agentmods.dev/badge/skills/iusztinpaul/designing-real-world-ai-agents-workshop/building-streamlit-multipage-apps/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/iusztinpaul/designing-real-world-ai-agents-workshop/building-streamlit-multipage-apps"><img src="https://agentmods.dev/badge/skills/iusztinpaul/designing-real-world-ai-agents-workshop/building-streamlit-multipage-apps.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 5.1 | $0.00034 | $0.01461 |
| Opus 5.5 | $0.00014 | $0.00584 |
| Sonnet 5.5 | $0.00007 | $0.00292 |
| Haiku 4.5 | $0.00003 | $0.00146 |
Grade A, and why
building-streamlit-multipage-apps 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 2mo 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.
How it starts
The opening of the file, as written. The whole thing — 219 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Streamlit multi-page apps
Structure and navigation for apps with multiple pages.
Directory structure
streamlit_app.py # Main entry point
app_pages/
home.py
analytics.py
settings.py
Important: Name your pages directory app_pages/ (not pages/). Using pages/ conflicts with Streamlit's old auto-discovery API and can cause unexpected behavior.
Main module
# streamlit_app.py
import streamlit as st
# Initialize global state (shared across pages)
if "api_client" not in st.session_state:
st.session_state.api_client = init_api_client()
# Define navigation
page = st.navigation([
st.Page("app_pages/home.py", title="Home", icon=":material/home:"),
st.Page("app_pages/analytics.py", title="Analytics", icon=":material/bar_chart:"),
st.Page("app_pages/settings.py", title="Settings", icon=":material/settings:"),
])
# App-level UI runs before page content
# Useful for shared elements like titles
st.title(f"{page.icon} {page.title}")
page.run()
Note: When you handle titles in streamlit_app.py, individual pages should NOT use st.title again.
Navigation position
Few pages (3-7) → Top navigation:
page = st.navigation([...], position="top")
Creates a clean horizontal menu. Great for simple apps. Sections are supported too—they appear as dropdowns in the top nav.
Many pages or nested sections → Sidebar:
page = st.navigation({
"Main": [
st.Page("app_pages/home.py", title="Home"),
st.Page("app_pages/analytics.py", title="Analytics"),
],
"Admin": [
st.Page("app_pages/settings.py", title="Settings"),
st.Page("app_pages/users.py", title="Users"),
],
}, position="sidebar")
Mixed: Some pages ungrouped:
Use an empty string key "" for pages that shouldn't be in a section. These ungrouped pages always appear first, before any named groups. Put all ungrouped pages in a single "" key:
page = st.navigation({
"": [
st.Page("app_pages/home.py", title="Home"),
st.Page("app_pages/about.py", title="About"),
],
"Analytics": [
st.Page("app_pages/dashboard.py", title="Dashboard"),
st.Page("app_pages/reports.py", title="Reports"),
],
}, position="top")
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.
- 2mo ago First seen · 219 lines · 34 tokens per session scan A 801d8abcd265
building-streamlit-multipage-apps is a skill published in the GitHub repository iusztinpaul/designing-real-world-ai-agents-workshop (517 stars, last pushed 4mo ago), licensed MIT. It adds 34 tokens to every session and 1,461 once invoked, about $0.0001 per session on Opus 5.5. 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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