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Agent skill

Building Streamlit Multipage Apps

by iusztinpaul in iusztinpaul/designing-real-world-ai-agents-workshop

Building multi-page Streamlit apps. An agent skill from iusztinpaul/designing-real-world-ai-agents-workshop.

Apache-2.0Auto-check passed

Install Building Streamlit Multipage Apps

skills CLI
$ npx skills add iusztinpaul/designing-real-world-ai-agents-workshop --skill building-streamlit-multipage-apps -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install iusztinpaul/designing-real-world-ai-agents-workshop building-streamlit-multipage-apps --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/iusztinpaul/designing-real-world-ai-agents-workshop.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/developing-with-streamlit/skills/building-streamlit-multipage-apps .claude/skills/building-streamlit-multipage-apps && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
building-streamlit-multipage-apps
GitHub stars
512
Token cost
~1.6k tokens
SKILL.md length
315 words
Files
1
Skills in repo
23
Repo updated
First seen
Licence
Apache-2.0

At a glance

Building multi-page Streamlit apps. An agent skill from iusztinpaul/designing-real-world-ai-agents-workshop.

  • Creating apps with multiple pages
  • SKILL.md covers Directory structure, Main module, Navigation position and Page modules, plus 7 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Setting up navigation

What it does

Building Streamlit Multipage Apps is an agent skill from iusztinpaul/designing-real-world-ai-agents-workshop. Building multi-page Streamlit apps. Use when creating apps with multiple pages, setting up navigation, or managing state across pages.

Its SKILL.md is about 1.6k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It works with Streamlit. The repository describes itself as: Hands-on workshop: Build a multi-agent AI system from scratch — Deep Research Agent + Writing Workflow served as MCP servers. Includes code, slides, and video. The licence is Apache-2.0.

When your agent uses it

  • Creating apps with multiple pages
  • Setting up navigation
  • Managing state across pages

Example prompts

  • “/building-streamlit-multipage-apps”

Requirements

  • Python 3

What it can do on your machine

Read from SKILL.md and the folder at commit ea4f6e9. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are python).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Links to these hosts (documentation or services it may open):

    • docs.streamlit.io

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Building Streamlit Multipage Apps loads about 1.6k tokens when it runs. Until then it costs about 42 tokens; SKILL.md has 315 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~42
When it runs · the whole SKILL.md, loaded when a task matches
~1.6k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from iusztinpaul/designing-real-world-ai-agents-workshop at commit ea4f6e9, republished under its Apache-2.0 licence (© iusztinpaul). 315 words, ~1,558 tokens.

Download SKILL.mdSave it as .claude/skills/building-streamlit-multipage-apps/SKILL.md (or your agent's skills folder).
name
building-streamlit-multipage-apps
description
Building multi-page Streamlit apps. Use when creating apps with multiple pages, setting up navigation, or managing state across pages.
license
Apache-2.0

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

python
# 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:

python
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:

python
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:

python
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")

Page modules

python
# app_pages/analytics.py
import streamlit as st

# Access global state
api = st.session_state.api_client
user = st.session_state.user

# Page-specific content (title is handled in streamlit_app.py)
data = api.fetch_analytics(user.id)
st.line_chart(data)

Global state

Initialize state in the main module only if it's needed across multiple pages:

python
# streamlit_app.py
st.session_state.api = init_client()
st.session_state.user = get_user()
st.session_state.settings = load_settings()

Tip: Use st.session_state.setdefault("key", default_value) to initialize values only if they don't exist.

Why main module (for global state):

  • Runs before every page
  • Ensures state is initialized
  • Single source of truth

Page-specific state

Use prefixed keys for page-specific state:

python
# app_pages/analytics.py
if "analytics_date_range" not in st.session_state:
    st.session_state.analytics_date_range = default_range()

Share elements between pages

Put shared UI in the entrypoint (before page.run()) so it appears on all pages:

python
# streamlit_app.py
import streamlit as st

pages = [...]
page = st.navigation(pages)

# Shared title
st.title(f"{page.icon} {page.title}")

# Shared sidebar widgets
with st.sidebar:
    st.selectbox("Theme", ["Light", "Dark"])

page.run()

Programmatic navigation

Navigate to another page programmatically:

python
if st.button("Go to Settings"):
    st.switch_page("app_pages/settings.py")

Create navigation links with st.page_link:

python
st.page_link("app_pages/home.py", label="Home", icon=":material/home:")
st.page_link("https://example.com", label="External", icon=":material/open_in_new:")

Note: Prefer st.navigation over st.page_link for standard navigation. Do not use st.page_link to recreate the nav bar you get with st.navigation. Only use st.page_link when linking to pages from somewhere other than the sidebar, or when building a more complex navigation menu.

Conditional pages

Show different pages based on user role, authentication, or any other condition by building the pages list dynamically:

python
# streamlit_app.py
import streamlit as st

pages = [st.Page("app_pages/home.py", title="Home", icon=":material/home:")]

if st.user.is_logged_in:
    pages.append(st.Page("app_pages/dashboard.py", title="Dashboard", icon=":material/bar_chart:"))

if st.session_state.get("is_admin"):
    pages.append(st.Page("app_pages/admin.py", title="Admin", icon=":material/settings:"))

page = st.navigation(pages)
page.run()

Common conditions for showing/hiding pages:

  • st.user.is_logged_in for authenticated users
  • st.session_state flags (roles, permissions, feature flags)
  • Environment variables or secrets
  • Time-based access (e.g., beta features)

Imports from pages

When importing from page files in app_pages/, always import from the root directory perspective:

python
# app_pages/dashboard.py - GOOD
from utils.data import load_sales_data

# app_pages/dashboard.py - BAD (don't use relative imports)
from ..utils.data import load_sales_data

References

© iusztinpaul, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .agents/skills/developing-with-streamlit/skills/building-streamlit-multipage-apps of iusztinpaul/designing-real-world-ai-agents-workshop.

Open the folder on GitHubat commit ea4f6e9

Compare with similar skills

Building Streamlit Multipage Apps next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Building Streamlit Multipage Apps compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Building Streamlit Multipage Apps this skilliusztinpaul/designing-real-world-ai-agents-workshop512—~1.6kAutomated safety check: PassApache-2.0
Paper FiguresEvoScientist/EvoSkills4781 repos~4.4kAutomated safety check: PassApache-2.0
Changesetwhitphx/stlite1.7k—~1.9kAutomated safety check: PassApache-2.0
Updating Docs For Releasestreamlit/docs178—~4kAutomated safety check: PassApache-2.0
Echarts Streamlit Syncandfanilo/streamlit-echarts-demo146—~1kAutomated safety check: PassNone
Streamlit Rebasewhitphx/stlite1.7k—~2.3kAutomated safety check: PassApache-2.0

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Works with

Questions about Building Streamlit Multipage Apps

What does Building Streamlit Multipage Apps do?

Building multi-page Streamlit apps. An agent skill from iusztinpaul/designing-real-world-ai-agents-workshop. Building Streamlit Multipage Apps is an agent skill from iusztinpaul/designing-real-world-ai-agents-workshop. Building multi-page Streamlit apps.

When should I use Building Streamlit Multipage Apps?

Building Streamlit Multipage Apps fits situations like: creating apps with multiple pages; setting up navigation; managing state across pages.

How do I install Building Streamlit Multipage Apps in Claude Code?

Run `npx skills add iusztinpaul/designing-real-world-ai-agents-workshop --skill building-streamlit-multipage-apps -a claude-code`. Or copy the skill folder (.agents/skills/developing-with-streamlit/skills/building-streamlit-multipage-apps in iusztinpaul/designing-real-world-ai-agents-workshop) into .claude/skills/building-streamlit-multipage-apps in your project. Claude Code loads it when a task matches its description.

How do I install Building Streamlit Multipage Apps in Codex?

Run `npx skills add iusztinpaul/designing-real-world-ai-agents-workshop --skill building-streamlit-multipage-apps -a codex`. Or copy the skill folder (.agents/skills/developing-with-streamlit/skills/building-streamlit-multipage-apps in iusztinpaul/designing-real-world-ai-agents-workshop) into .agents/skills/building-streamlit-multipage-apps in your project. Codex loads it when a task matches its description.

Can I use Building Streamlit Multipage Apps in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add iusztinpaul/designing-real-world-ai-agents-workshop --skill building-streamlit-multipage-apps -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/building-streamlit-multipage-apps, .gemini/skills/building-streamlit-multipage-apps, .github/skills/building-streamlit-multipage-apps and .opencode/skills/building-streamlit-multipage-apps in your project.

What does Building Streamlit Multipage Apps need to run?

SKILL.md names no scripts, command-line tools or credentials: Building Streamlit Multipage Apps is instructions for the agent only. Our summary lists: Python 3.

Does Building Streamlit Multipage Apps access the network?

SKILL.md names 1 domain. As links in the text: docs.streamlit.io. This is read from the text; nothing was executed.

Is Building Streamlit Multipage Apps safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Building Streamlit Multipage Apps use?

Building Streamlit Multipage Apps is published under the Apache-2.0 licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Building Streamlit Multipage Apps use?

About 1.6k tokens (SKILL.md is roughly 6.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Building Streamlit Multipage Apps?

Skills that share tags, products or a category with Building Streamlit Multipage Apps: Paper Figures (EvoScientist/EvoSkills, 478 stars), Changeset (whitphx/stlite, 1.7k stars), Updating Docs For Release (streamlit/docs, 178 stars) and Echarts Streamlit Sync (andfanilo/streamlit-echarts-demo, 146 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Building Streamlit Multipage Apps?

iusztinpaul (a GitHub user) maintains it in iusztinpaul/designing-real-world-ai-agents-workshop, which has 512 GitHub stars. The repository holds 23 skills in this directory. The repository was last updated on June 3, 2026.

Source: iusztinpaul/designing-real-world-ai-agents-workshop on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.