Coding & Dev Tools Agent Skills
Coding agent skills teach AI agents repeatable engineering workflows: reviewing pull requests, writing tests, refactoring safely, and enforcing house style. Install one SKILL.md and your agent applies the same checklist every time, whether you use Claude Code, Cursor, Codex, or another agent.
Coding & Dev Tools
9,777 skills
schattenspiegel Jax Python
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schattenspiegel Rich Python
Use for writing, reviewing, debugging, or testing Python terminal presentation built with Rich, including Console streams, Text and markup safety, tables, trees, panels, progress, status, Live displays, render protocols, and deterministic output capture. Do not use for CLI argument parsing, structured logging design, browser UI, or machine-readable protocol output that must remain plain.
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schattenspiegel Httpx Python
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schattenspiegel Sympy Python
Use for writing, reviewing, debugging, testing, or optimizing Python SymPy symbolic mathematics. Trigger on Symbol, assumptions, Expr, Eq, solve/solveset, simplify, factor, expand, calculus, matrices, exact arithmetic, lambdify, code generation, or symbolic-to-numeric conversion. Do not use for NumPy-only arrays, mpmath-only arbitrary-precision numerics, CVXPY optimization models, or parsing untrusted mathematical text.
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schattenspiegel Typer Python
Use for writing, reviewing, debugging, or testing Python command-line interfaces built with Typer, including typed arguments and options, command groups, callbacks, contexts, exit behavior, help, and CliRunner tests. Do not use merely for terminal styling, arbitrary business logic, a Click-only CLI, shell scripts, or invoking an existing command.
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schattenspiegel Mpmath Python
Use for writing, reviewing, debugging, testing, or validating Python mpmath arbitrary-precision numerical code. Trigger on mpf, mpc, mp.dps, workdps, interval arithmetic, high-precision quadrature, root finding, special functions, matrices, inverse transforms, or precision/convergence failures. Do not use for ordinary NumPy vectorization, SymPy symbolic manipulation, decimal currency arithmetic, or machine-float code with no precision requirement.
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schattenspiegel Pandas Python
Write, review, debug, test, or optimize pandas Series, DataFrame, Index, groupby, merge, reshape, dtype, missing-value, and time-series code.
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schattenspiegel Pytest Python
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schattenspiegel Python Typing
Design, review, debug, and test Python static types including Protocol, generics, variance, overloads, TypedDict, ParamSpec, TypeGuard, and narrowing.
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schattenspiegel Xarray Python
Write, review, debug, or test Python Xarray workflows for labeled N-dimensional DataArray and Dataset operations, including coordinates, alignment, indexing, groupby, resample, rolling, weighted reduction, Dask-backed execution, and NetCDF/Zarr I/O.
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schattenspiegel Fastapi Python
Write, review, debug, and test Python FastAPI applications with path operations, dependencies, Pydantic models, lifespan, middleware, background tasks, exception handling, and ASGI tests.
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schattenspiegel Jupyter Python
Create, review, debug, test, or reproduce Python Jupyter notebooks by inspecting format, executing cells top-to-bottom in a clean kernel, and verifying outputs.
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schattenspiegel Sqlglot Python
Write, review, debug, or test Python code that parses, inspects, transforms, builds, qualifies, optimizes, formats, or transpiles SQL with SQLGlot.
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schattenspiegel Networkx Python
Produces NetworkX code with explicit graph kind, node identity, edge multiplicity, direction, attribute schema, weight semantics, and algorithm preconditions, including testing.
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schattenspiegel Rustworkx Python
Write, review, debug, test, or optimize Python code using the rustworkx graph library, with explicit handling of graph kind, index lifecycle, payload semantics, and algorithm result mapping.
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schattenspiegel Streamlit Python
Use for writing, reviewing, debugging, or testing Python Streamlit apps, especially rerun behavior, widget identity and callbacks, session_state, cache_data/cache_resource, forms, fragments, containers, multipage navigation, uploads/downloads, and Streamlit-hosted chart/table interaction. Do not use for standalone Plotly/Altair figure design, generic backend services, Dash apps, or deployment configuration without app code.
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schattenspiegel Pytest Hypothesis
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schattenspiegel Statsmodels Python
Write, review, debug, or interpret Python statistical models using statsmodels, including formulas, regression, GLM, time series, robust covariance, diagnostics, prediction intervals, and inference.
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schattenspiegel Scikit Learn Python
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schattenspiegel Httpx Tenacity Asyncio
Use for designing or reviewing resilient asynchronous HTTP call paths that combine HTTPX, Tenacity, and asyncio: client lifetime, time budgets, retry eligibility, backoff, concurrency, cancellation, and idempotency. Do not use for generic HTTPX, retry, or asyncio questions that do not cross these boundaries.
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schattenspiegel Python Project Tooling
Creates, reviews, debugs, and modernizes Python project structure with deterministic tooling including pyproject.toml, uv, Ruff, Pyright, and pytest.
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schattenspiegel Polars Pyarrow Boundaries
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schattenspiegel Fastapi Pydantic Boundaries
Use when FastAPI request, dependency, response, or OpenAPI behavior interacts with Pydantic v2 models, validation, aliases, serialization, generics, or error contracts. Do not use for standalone FastAPI routing or standalone Pydantic models with no ASGI boundary.
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schattenspiegel Sympy Numpy Scipy Boundaries
Use when symbolic mathematics must cross into NumPy vector evaluation or SciPy numerical algorithms: lambdify contracts, domains, dtypes, parameters, residuals, tolerances, and symbolic-versus-numeric verification. Do not use for work confined entirely to one of those libraries.
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matteobortolazzo Sync
Sync main, rebase active worktrees, and clean up merged branches safely.
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matteobortolazzo Design
Run interactive design reasoning and create .pen files using Pencil.
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matteobortolazzo Refine
Refine a ticket interactively until it is ready for planning.
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matteobortolazzo Maintain
> **Client dispatch**: In Codex, read `codex-runtime` and `maintain/codex.md`, execute that native procedure, and do not continue into the Claude procedure below.
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matteobortolazzo Refactor
Analyze a codebase with specialized agents and propose refactoring tickets.
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matteobortolazzo Configure
Configure cenci's neutral project core and generate Claude/Codex adapters.
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matteobortolazzo Address Review
Address PR review comments by fetching, evaluating, fixing, replying, pushing, and re-requesting review.
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matteobortolazzo Babysit Attention
Resolve a paused PR supervisor decision with explicit human input.
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matteobortolazzo Pr Comment Filter
Decide which pull-request review comments are actionable. Use when addressing review feedback, monitoring a PR, or filtering already-handled comments.
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whd4 Blockrun
Use when user needs capabilities Claude lacks (image generation, real-time X/Twitter data) or explicitly requests external models ("blockrun", "use grok", "use gpt", "dall-e", "deepseek")
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whd4 Clerk Auth
Expert patterns for Clerk auth implementation, middleware, organizations, webhooks, and user sync Use when: adding authentication, clerk auth, user authentication, sign in, sign up.
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whd4 App Builder
Main application building orchestrator. Creates full-stack applications from natural language requests. Determines project type, selects tech stack, coordinates agents.
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Frequently asked questions
What are Coding & Dev Tools agent skills?
Coding agent skills teach AI agents repeatable engineering workflows: reviewing pull requests, writing tests, refactoring safely, and enforcing house style. Install one SKILL.md and your agent applies the same checklist every time, whether you use Claude Code, Cursor, Codex, or another agent.
Which Coding & Dev Tools skills are most installed?
Popular Coding & Dev Tools skills on SkillMD right now include jax-python, rich-python, httpx-python. Rankings shift as installs change; sort this page by "Most downloaded" for the live list.
Do Coding & Dev Tools skills work with Claude Code and Cursor?
Yes. Every skill here ships as a SKILL.md file, an open format that works in Claude Code, Claude.ai, Cursor, Codex, Windsurf, and 60+ other agents. Install one with npx skillmds add <owner>/<name>, or copy the file into your agent's skills directory.