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Found 3,052 Skills
Use when designing Rails models - ActiveRecord patterns, validations, callbacks, scopes, associations, concerns, query objects, form objects
Pydantic is a Python data validation and serialization library, based on type hints. Use this skill whenever you need to do relatively complex data modeling using Pydantic, e.g. when adding constraints, defining a model hierarchy with subclasses, etc.
Recreates or builds UI designs in Sketch from a reference URL, screenshot, or source code with side-by-side screenshot fidelity validation using Sketch MCP (`get_document_info`, `get_layer_tree_summary`, `get_screenshot`, `get_design_assets`, `get_symbol_overrides`, targeted `run_code`). Use when the user wants to design, mock up, or reproduce a page or screen in Sketch from the web, an image, or code.
Retroactively audit and fill Nyquist validation gaps for a completed phase
Analyze survey results into actionable PM insights. Produces persona segmentation, hypothesis validation status, thematic clustering of open-text responses, statistical confidence labels, prioritized recommendations, and what-NOT-to-conclude warnings. Refuses to overstate statistical significance from weak samples or biased instruments.
Study design and validity review for radiology and medical AI research. Identifies analysis unit, cohort logic, leakage risks, comparator design, validation strategy, and reporting guideline fit before drafting or submission.
Writing or reviewing code that handles untrusted input, secrets, outbound requests, rendered content, or third-party dependencies — "is this safe", "secure by default", "harden", "security", "secret", "privacy", "PII", "XSS", "injection", "SSRF", "safe fetch", "access control", or a dependency review. The OWASP Top 10:2025 lens in two modes, writing secure-by-default code and judging the risk a change introduces. Covers secrets and environment variables, input validation, output encoding, SSRF, access control and data exposure, and supply-chain risk.
Diagnose and correct a known defect, including a root-cause change and regression validation. Use when the user reports existing behavior that violates an expected contract. Do not use merely to undo or revise Codex's changes from the current task in response to feedback; continue the active task instead. Use kf-investigate-issue when the request is only to understand an unclear symptom or cause.
Use when running project-wide lint across a Datex Studio codebase (or a scope subset) — checks 5 categories of cross-component issues that per-file validation misses: (1) description-rule conformance across all component files, (2) schema-code alignment between declared `inParams`/`outParams` and the embedded TypeScript that consumes them, (3) cross-component `objectType` reference resolution, (4) OData query pre-flight against connection schemas, (5) result-shape sync between a datasource's query options and its declared `outParams`. Triggers: "validate the project", "run cross-component validation checks", "lint the codebase", "find broken type references", "find OData pre-flight failures", "check the project before merge". For single-file audits use `component-validator` instead.
Build, review, debug, migrate, or plan TanStack Form v1 React forms with current docs. Use for @tanstack/react-form, @tanstack/form-core, useForm, form.Field, createFormHook, createFormHookContexts, withForm, withFieldGroup, formOptions, form.Subscribe, useSelector, useStore, validators, Standard Schema validation, Zod, Valibot, ArkType, Effect Schema, async validation, dynamic validation, array fields, FormGroup, linked fields, listeners, SSR, TanStack Start, Next.js, Remix, devtools, UI libraries, accessibility, and production form composition.
HyperFrames HTML composition contract. Use for composition structure, data attributes, clips, tracks, sub-compositions, variables, media playback, deterministic render rules, and validation of minimal renderable projects.
Execute Azure deployments after preparation and validation are complete. USE FOR: azd up, azd deploy, push to Azure, publish to Azure, ship to production, launch on Azure, go live, release to Azure, deploy web app, deploy container app, deploy static site, deploy Azure Functions, azd provision, infrastructure deployment, bicep deploy, terraform apply, deploy with terraform. Supports azd with Bicep, azd with Terraform, pure Bicep, pure Terraform, and Azure CLI deployments. DO NOT USE FOR: preparing new apps (use azure-prepare), validating before deploy (use azure-validate).