Skill Claude CodeCodex
Address all valid review comments on a PR for the current branch in the streamlit/streamlit repo. Covers both inline review comments and general PR (issue) comments. Use when a PR has reviewer feedback to address, including code changes, style fixes, and documentation updates.
Skill Claude CodeCodex
Assesses whether branch or PR changes are high-risk for externally hosted or embedded Streamlit usage and recommends whether external e2e coverage with @pytest.mark.externaltest is needed. Use during code review, PR triage, or test planning when changes touch routing, auth, websocket/session behavior, embedding…
Skill Claude CodeCodex
Validates all code changes before committing by running format, lint, type, and unit test checks. Use after making backend (Python) or frontend (TypeScript) changes, before committing or finishing a work session.
Skill Claude CodeCodex
Creates a draft pull request on GitHub with proper labels, branch naming, and description formatting. Use when changes are ready to be submitted as a PR to the streamlit/streamlit repository.
Skill Claude CodeCodex
Debug Streamlit frontend and backend changes using make debug with hot-reload. Use when testing code changes, investigating bugs, checking UI behavior, or needing screenshots of the running app.
Skill Claude CodeCodex
Lists available make commands for Streamlit development. Use for build, test, lint, or format tasks.
Skill Claude CodeCodex
Finalizes branch changes for merging by simplifying code, running checks, reviewing changes, and creating a PR if needed. Use when ready to merge changes into the target branch.
Skill Claude CodeCodex
Diagnose and fix flaky Playwright e2e tests. Use when tests fail intermittently, show timeout errors, have snapshot mismatches, or exhibit browser-specific failures.
Skill Claude CodeCodex
Analyze and fix failed GitHub Actions CI jobs for the current branch/PR. Use when CI checks fail, PR checks show failures, or you need to diagnose lint/type/test errors and verify fixes locally.
Skill Claude CodeCodex
Generates polished website release notes between two git tags for docs.streamlit.io. Use when preparing a new Streamlit release or reviewing changes between versions.
Skill Claude CodeCodex
Implement a feature from a product/tech spec, URL, GitHub issue, or by auto-selecting the next papercut enhancement. Reads the spec, implements the feature following Streamlit patterns, and creates a merge-ready PR. Use when given a spec folder path, document URL, or issue link to implement, or when asked to implement…
Skill Claude CodeCodex
Runs frontend unit tests with coverage, analyzes coverage reports, and implements meaningful tests to increase coverage by 0.2%. Use when you want to systematically improve frontend test coverage with high-value test cases.
Skill Claude CodeCodex
Runs Python unit tests with coverage, analyzes coverage reports, and implements meaningful tests to increase coverage by 0.2%. Use when you want to systematically improve Python test coverage with high-value test cases.
Skill Claude CodeCodex
Evaluates a PR's title and description for readability — do they clearly and concisely convey what changed and why to a reviewer? Produces findings with concrete proposed rewrites; the caller decides whether to apply them or present them as feedback. Use when finalizing a PR or reviewing PR metadata. For code…
Skill Claude CodeCodex
Evaluates comments, docstrings, and naming in code for readability by a developer new to the codebase — is the documentation clear and concise, and is non-obvious logic documented? Produces findings with concrete proposed rewrites (or additions where documentation is missing); the caller decides whether to apply them…
Skill Claude CodeCodex
Uploads agent-generated artifacts (specs, plans, learnings) to the streamlit.wiki for sharing via PR comments. Use when you have agent artifacts to share with reviewers.
Skill Claude CodeCodex
Explains Streamlit's internal architecture including backend runtime, frontend rendering, and WebSocket communication. Use when debugging cross-layer issues, understanding how features work end-to-end, planning architectural changes, or onboarding to the codebase. Covers ForwardMsg/BackMsg protocol, script rerun…
Skill Claude CodeCodex
Review internal documentation (.md files) against the current codebase state and propose updates for outdated or incorrect information.
Skill Claude CodeCodex
Writes product and tech specs for new Streamlit features. Use when designing new API commands, widgets, or significant changes that need team review before implementation.
Skill Claude CodeCodex
Use for ALL Streamlit tasks: creating, editing, debugging, beautifying, styling, theming, optimizing, or deploying Streamlit apps. Also custom components, st.components.v2, HTML/JS/CSS work. Discovers and loads version-matched reference docs from the user's installed Streamlit (>=1.57). Triggers: streamlit, st.…