Pydantic
bobmatnyc/claude-mpm
Python data validation using type hints and runtime type checking with Pydantic v2's Rust-powered core for high-performance validation in FastAPI, Django, and configuration management.
Automatically migrate Python web applications between frameworks (Flask → FastAPI, Django → FastAPI).
$ npx skills add ArabelaTso/Skills-4-SE --skill framework-migration-assistant -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install ArabelaTso/Skills-4-SE framework-migration-assistant --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/ArabelaTso/Skills-4-SE.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/framework-migration-assistant .claude/skills/framework-migration-assistant && rm -rf skills-srcUse ~/.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/
Install the "framework-migration-assistant" agent skill from https://github.com/ArabelaTso/Skills-4-SE/tree/main/skills/framework-migration-assistant into .claude/skills/framework-migration-assistant/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "framework-migration-assistant", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/ArabelaTso/Skills-4-SE/tree/main/skills/framework-migration-assistantType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add ArabelaTso/Skills-4-SE --skill framework-migration-assistant -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install ArabelaTso/Skills-4-SE framework-migration-assistant --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ArabelaTso/Skills-4-SE.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/framework-migration-assistant .agents/skills/framework-migration-assistant && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "framework-migration-assistant" agent skill from https://github.com/ArabelaTso/Skills-4-SE/tree/main/skills/framework-migration-assistant into .agents/skills/framework-migration-assistant/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "framework-migration-assistant", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add ArabelaTso/Skills-4-SE --skill framework-migration-assistant -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install ArabelaTso/Skills-4-SE framework-migration-assistant --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ArabelaTso/Skills-4-SE.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/framework-migration-assistant .cursor/skills/framework-migration-assistant && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "framework-migration-assistant" agent skill from https://github.com/ArabelaTso/Skills-4-SE/tree/main/skills/framework-migration-assistant into .cursor/skills/framework-migration-assistant/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "framework-migration-assistant", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/ArabelaTso/Skills-4-SE.git --path skills/framework-migration-assistant--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add ArabelaTso/Skills-4-SE --skill framework-migration-assistant -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install ArabelaTso/Skills-4-SE framework-migration-assistant --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ArabelaTso/Skills-4-SE.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/framework-migration-assistant .gemini/skills/framework-migration-assistant && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "framework-migration-assistant" agent skill from https://github.com/ArabelaTso/Skills-4-SE/tree/main/skills/framework-migration-assistant into .gemini/skills/framework-migration-assistant/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "framework-migration-assistant", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install ArabelaTso/Skills-4-SE framework-migration-assistantInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add ArabelaTso/Skills-4-SE --skill framework-migration-assistant -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/ArabelaTso/Skills-4-SE.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/framework-migration-assistant .github/skills/framework-migration-assistant && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "framework-migration-assistant" agent skill from https://github.com/ArabelaTso/Skills-4-SE/tree/main/skills/framework-migration-assistant into .github/skills/framework-migration-assistant/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "framework-migration-assistant", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add ArabelaTso/Skills-4-SE --skill framework-migration-assistant -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install ArabelaTso/Skills-4-SE framework-migration-assistant --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ArabelaTso/Skills-4-SE.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/framework-migration-assistant .opencode/skills/framework-migration-assistant && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "framework-migration-assistant" agent skill from https://github.com/ArabelaTso/Skills-4-SE/tree/main/skills/framework-migration-assistant into .opencode/skills/framework-migration-assistant/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "framework-migration-assistant", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
framework-migration-assistantAutomatically migrate Python web applications between frameworks (Flask → FastAPI, Django → FastAPI).
Framework Migration Assistant is an agent skill from ArabelaTso/Skills-4-SE. Automatically migrate Python web applications between frameworks (Flask → FastAPI, Django → FastAPI). Use when you need to migrate an existing web application to a modern framework while preserving functionality. The skill analyzes the codebase, updates routes, handlers, configuration, dependency injection patterns, and tests. Creates git commits for each migration phase and generates a comprehensive summary of all changes. Supports automatic dependency updates, code transformations, and test adaptations.
Its SKILL.md is about 1.9k tokens, which your agent loads only when the skill is triggered. The skill folder holds 13 other files, including scripts, reference files and assets (for example `assets/example_fastapi_app.py`, `assets/example_flask_app.py` and `references/framework_comparison.md`).
It sits in Backend & APIs, covering Backend development, Code migrations and Design patterns. It works with FastAPI, Django, Flask and Python. The repository describes itself as: A curated list of 180+ useful Claude Skills for Software Engineering and resources for customizing AI for SE workflows. The licence is Apache-2.0.
6 steps, taken from the step headings in SKILL.md.
Read from SKILL.md and the folder at commit 4f38503. It shows what the files ask for, not the result of running them.
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.
Ships 5 files in scripts/ (Python), which the agent can run.
Shell commands in SKILL.md call:
gitpythonpippytestuvicornFrom the folder's file list and the shell code blocks in SKILL.md.
No URLs in SKILL.md. Its commands use git and pip, which can reach the network depending on how they are called.
From URLs in SKILL.md, links to its own repository left out.
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Framework Migration Assistant loads about 1.9k tokens when it runs, and up to ~8.5k if it reads all its reference files. Until then it costs about 135 tokens; SKILL.md has 553 words of instructions outside code blocks.
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.
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); the scripts in this folder are not scanned.
The full file from ArabelaTso/Skills-4-SE at commit 4f38503, republished under its Apache-2.0 licence (© ArabelaTso). 553 words, ~1,898 tokens.
.claude/skills/framework-migration-assistant/SKILL.md (or your agent's skills folder). This skill also uses 10 other files; get the full folder from GitHub.This skill automatically migrates Python web applications between frameworks, transforming code, configuration, and tests while preserving existing functionality. It handles route migration, request/response patterns, dependency injection, configuration updates, and test adaptations, committing changes incrementally with detailed summaries.
# Navigate to your repository
cd /path/to/your/repo
# Run migration
python scripts/migrate.py . --from flask --to fastapiThe migration process will:
# Migrate Flask app to FastAPI
python scripts/migrate.py /path/to/flask-app --from flask --to fastapi
# Output:
# ✓ Created migration branch: migrate-flask-to-fastapi
# ✓ Analyzing codebase...
# ✓ Found 15 route files
# ✓ Found 23 test files
# ✓ Migrating dependencies...
# ✓ Migrating routes...
# ✓ Migrating configuration...
# ✓ Migrating tests...
# ✓ Migration completed successfully!What gets migrated:
@app.route() → @app.get(), @app.post(), etc.request.args → query parameters, request.json → Pydantic modelsjsonify() → direct returnExample transformation:
Before (Flask):
@app.route('/users/<int:user_id>', methods=['GET'])
def get_user(user_id):
user = db.get_user(user_id)
return jsonify(user)After (FastAPI):
@app.get('/users/{user_id}')
async def get_user(user_id: int) -> UserSchema:
user = await db.get_user(user_id)
return userWhat gets migrated:
The migration tool automatically:
Updates package dependencies:
requirements.txtpyproject.tomlExample changes:
flask>=2.0.0 → fastapi>=0.104.0
werkzeug>=2.0.0 → uvicorn[standard]>=0.24.0
flask-cors>=3.0.0 → fastapi-cors>=0.0.6Transforms route definitions and handlers:
Updates configuration files:
Adapts test files:
Creates a comprehensive report:
MIGRATION_SUMMARY.jsonpython scripts/migrate.py <repo_path> --from <source> --to <target>
# Options:
# repo_path: Path to the repository
# --from: Source framework (flask, django, or auto)
# --to: Target framework (fastapi)You can also run individual migration steps:
from migrate_dependencies import DependencyMigrator
from migrate_routes import RouteMigrator
from migrate_config import ConfigMigrator
from migrate_tests import TestMigrator
# Run specific migration
migrator = RouteMigrator(repo_path, 'flask', 'fastapi')
migrator.migrate()After migration completes:
Review the changes
git log --oneline
git diff main..migrate-flask-to-fastapiInstall new dependencies
pip install -r requirements.txtRun tests
pytestManual review needed for:
Test the application
uvicorn main:app --reloadMerge when ready
git checkout main
git merge migrate-flask-to-fastapireferences/framework_comparison.md - Detailed comparison of Flask, Django, and FastAPI including architecture, routing, request handling, and performancereferences/migration_guide.md - Comprehensive migration guide with step-by-step instructions, common patterns, troubleshooting, and post-migration checklistreferences/migration_patterns.md - Common migration patterns for routes, requests, responses, authentication, database operations, and testingExample applications are provided in assets/:
example_flask_app.py - Flask application before migrationexample_fastapi_app.py - Same application after migration to FastAPICompare these files to understand the transformations applied.
After migration, review MIGRATION_SUMMARY.json:
{
"source_framework": "flask",
"target_framework": "fastapi",
"total_changes": 47,
"changes_by_type": {
"dependency": 5,
"route": 15,
"config": 4,
"test": 23
},
"files_modified": [...],
"next_steps": [...]
}Issue: Import errors after migration
pip install -r requirements.txtIssue: Tests fail with async errors
@pytest.mark.asyncio and install pytest-asyncioIssue: Database connections fail
Issue: CORS errors
See references/migration_guide.md for detailed troubleshooting.
© ArabelaTso, 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
SKILL.md and 10 other files (scripts, references, assets) in skills/framework-migration-assistant of ArabelaTso/Skills-4-SE.
Open the folder on GitHubat commit 4f38503
Framework Migration Assistant 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Framework Migration Assistant this skillArabelaTso/Skills-4-SE | 253 | — | ~1.9k | Automated safety check: Pass | Apache-2.0 | |
| Pydanticbobmatnyc/claude-mpm | 155 | — | ~8.4k | Automated safety check: Notes | Custom licence | |
| Fix Slow Endpointvpcarlos/profyle | 123 | — | ~2.1k | Automated safety check: Pass | MIT | |
| Mastering Python SkillSpillwaveSolutions/agent-brain | 120 | — | ~1.4k | Automated safety check: Notes | MIT | |
| Sentry Python SDKgetsentry/sentry-for-ai | 268 | — | ~4.1k | Automated safety check: Pass | Apache-2.0 | |
| Python Appservice Deploymicrosoft/GitHub-Copilot-for-Azure | 255 | 1 repos | ~688 | Automated safety check: Pass | MIT |
bobmatnyc/claude-mpm
Python data validation using type hints and runtime type checking with Pydantic v2's Rust-powered core for high-performance validation in FastAPI, Django, and configuration management.
vpcarlos/profyle
Diagnose and fix a slow endpoint or request in a Python web app (FastAPI, Flask, Django, Tornado, any ASGI/WSGI framework) using real Profyle/VizTracer traces, then prove the fix by replaying the…
SpillwaveSolutions/agent-brain
Modern Python coaching covering language foundations through advanced production patterns.
getsentry/sentry-for-ai
Full Sentry SDK setup for Python. An agent skill from getsentry/sentry-for-ai.
microsoft/GitHub-Copilot-for-Azure
Deploy Python (Flask/Django/FastAPI) code to Azure App Service Linux.
cohen-liel/hivemind
FastAPI best practices for building production Python backends.
ArabelaTso/Skills-4-SE
Generate prioritized CVE watchlists and actionable security recommendations for repositories.
ArabelaTso/Skills-4-SE
Generate test cases using metamorphic testing by applying transformations based on metamorphic properties.
ArabelaTso/Skills-4-SE
Instruments programs to capture execution traces specifically for reproducing reported bugs, enabling consistent replay and diagnosis of failures.
ArabelaTso/Skills-4-SE
Automatically migrate Spring MVC applications to Spring Boot.
ArabelaTso/Skills-4-SE
Instrument programs (Python, C/C++, Java) to capture snapshots of key program states at runtime, including variables, memory, and call stacks.
ArabelaTso/Skills-4-SE
Instruments code to track the flow of untrusted or sensitive data at runtime, enabling detection of injection vulnerabilities, data leaks, and privilege violations.
Categories
Automatically migrate Python web applications between frameworks (Flask → FastAPI, Django → FastAPI). Framework Migration Assistant is an agent skill from ArabelaTso/Skills-4-SE. Automatically migrate Python web applications between frameworks (Flask → FastAPI, Django → FastAPI).
Framework Migration Assistant fits situations like: you need to migrate an existing web application to a modern framework while preserving functionality; tasks that involve Backend development; tasks that involve Code migrations.
Run `npx skills add ArabelaTso/Skills-4-SE --skill framework-migration-assistant -a claude-code`. Or copy the skill folder (skills/framework-migration-assistant in ArabelaTso/Skills-4-SE) into .claude/skills/framework-migration-assistant in your project. Claude Code loads it when a task matches its description.
Run `npx skills add ArabelaTso/Skills-4-SE --skill framework-migration-assistant -a codex`. Or copy the skill folder (skills/framework-migration-assistant in ArabelaTso/Skills-4-SE) into .agents/skills/framework-migration-assistant in your project. Codex loads it when a task matches its description.
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add ArabelaTso/Skills-4-SE --skill framework-migration-assistant -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/framework-migration-assistant, .gemini/skills/framework-migration-assistant, .github/skills/framework-migration-assistant and .opencode/skills/framework-migration-assistant in your project.
Going by SKILL.md and its folder, Framework Migration Assistant needs Python for the scripts in its folder and the command-line tools its instructions call (git, python, pip, pytest and uvicorn). Our summary lists: Python 3.
SKILL.md contains no URLs. Its commands use git and pip, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
Framework Migration Assistant is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
About 1.9k tokens (SKILL.md is roughly 7.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 6.6k tokens, read only when the agent opens those files.
Skills that share tags, products or a category with Framework Migration Assistant: Pydantic (bobmatnyc/claude-mpm, 155 stars), Fix Slow Endpoint (vpcarlos/profyle, 123 stars), Mastering Python Skill (SpillwaveSolutions/agent-brain, 120 stars) and Sentry Python SDK (getsentry/sentry-for-ai, 268 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
ArabelaTso (a GitHub user) maintains it in ArabelaTso/Skills-4-SE, which has 253 GitHub stars. The repository holds 151 skills in this directory. The repository was last updated on August 21, 2026.
Source: ArabelaTso/Skills-4-SE on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.