Work with astronomical data using Astropy for FITS file I/O, coordinate transformations, physical units, precise time handling, and catalog operations. Use when processing telescope images, matching celestial catalogs, handling time-series observations, or building photometry/spectroscopy pipelines. Ideal for astronomy research requiring proper unit handling, coordinate frame transformations, and astronomical time scales.

M-estimation, influence functions, and semiparametric efficiency theory for causal inference

Run background agents and bash commands asynchronously for CircleTel development. Use when running dev servers, parallel tests, long builds, or multi-agent research tasks without blocking the main workflow.

Comprehensive pytest skill for async Python testing with proper mocking, fixtures, and patterns from production-ready test suites. Use when writing or improving async tests for Python applications, especially FastAPI backends with database interactions.

Author and validate AsyncAPI 3.0 specifications for event-driven API design, message brokers, and async communication patterns

Event-driven API specification with AsyncAPI 3.0 for message-based architectures

AsyncAPI specification handling for event-driven API documentation. Parse, validate, and generate documentation for message-based APIs including Kafka, MQTT, WebSocket, and AMQP systems.

Add the Debounce mixin to wait for user input pauses before acting. Covers setting the `debounce` duration, implementing search-as-you-type, and avoiding excessive API calls during rapid input.

Debug AsyncRedux applications effectively. Covers printing state with store.state, checking actionsInProgress(), using ConsoleActionObserver, StateObserver for state change tracking, and tracking dispatchCount/reduceCount.

Inject dependencies into actions using the environment pattern. Covers creating an Environment class, passing it to the Store, accessing `env` from actions, and using dependency injection for testability.

Handle navigation through actions using NavigateAction. Covers setting up the navigator key, dispatching NavigateAction for push/pop/replace, and testing navigation in isolation.

Implement local state persistence using Persistor. Covers creating a custom Persistor class, implementing `readState()`, `persistDifference()`, `deleteState()`, using LocalPersist helper, throttling saves, and pausing/resuming persistence with app lifecycle.

Integrate AsyncRedux with the Provider package. Covers using provider_for_redux, the ReduxSelector widget, and choosing between StoreConnector and ReduxSelector approaches.

Create and cache selectors for efficient state access. Covers writing selector functions, caching with `cache1` and `cache2`, the reselect pattern, and avoiding repeated computations in widgets.

Initialize, setup and configure AsyncRedux in a Flutter app. Use it whenever starting a new AsyncRedux project, or when the user requests.

Write unit tests for AsyncRedux actions using the Store directly. Covers creating test stores with initial state, using `dispatchAndWait()`, checking state after actions, verifying action errors via ActionStatus, and testing async actions.

Test StoreConnector view-models in isolation. Covers creating view-models with `Vm.createFrom()`, testing view-model properties, testing callbacks that dispatch actions, and verifying state changes from callbacks.

Use advanced wait methods for complex test scenarios. Covers `waitCondition()`, `waitAllActions()`, `waitActionType()`, `waitAllActionTypes()`, `waitAnyActionTypeFinishes()`, and the `completeImmediately` parameter.

Handle user-facing errors with UserException. Covers throwing UserException from actions, setting up UserExceptionDialog, customizing error dialogs with `onShowUserExceptionDialog`, and using UserExceptionAction for non-interrupting error display.

Use `waitCondition()` inside actions to pause execution until state meets criteria. Covers waiting for price thresholds, coordinating between actions, and implementing conditional workflows.

Call accessible chromatin regions from ATAC-seq data using MACS3 with ATAC-specific parameters. Use when identifying open chromatin regions from aligned ATAC-seq BAM files, different from ChIP-seq peak calling.

Interface with AtCoder for Japanese competitive programming contests

atdd

atdd-assistant

**Goal:** Generate API and/or E2E tests first, before starting implementation.

Drive quantitative analysis, factor diagnostics, and reporting for ATFT-GAT-FAN outputs.

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Patterns for Atlas database schema management covering HCL/SQL schema definitions, versioned and declarative migrations, linting analyzers, testing, and project configuration. Use when working with atlas.hcl, .hcl schema files, Atlas CLI commands, or database migrations.

Specialized in Atlas ORM and database design for Gravito. Trigger this for schema design, migrations, or complex query building.

Standard 5-phase workflow for most development tasks - bugs, small features, refactors (30-60 min)

Use the bundled CLI to control Atlas and inspect local browser data.

Use when querying Jira issues, searching Confluence pages, creating tickets, updating documentation, or integrating Atlassian tools via MCP protocol.

Atomic Design component organization pattern for React Native mobile applications. Use when creating new components with proper accessibility and touch targets.

Generate use-case-specific Attio workflow skills from templates. Use when creating new skills for lead qualification, deal management, customer onboarding, or custom Attio workflows.

Synthesize what we're learning about our audience

Comprehensive audio analysis with waveform visualization, spectrogram, BPM detection, key detection, frequency analysis, and loudness metrics.

Game audio design patterns for creating sound effects and UI audio. Use when designing sounds for games, writing AI audio prompts (ElevenLabs, etc.), creating feedback sounds, or specifying audio for abilities/UI. Includes psychological principles from Kind Games, volume hierarchy, frequency masking prevention, and prompt engineering for AI audio generation.

Create standard SuperCollider audio effects for Bice-Box (delays, reverbs, filters, distortions). Provides templates, ControlSpecs, common patterns, and MCP workflow for safely creating/updating effects.

You are the audio fingerprinting and pattern detection specialist for Modcaster's content analysis.

Test Bob The Skull with virtual audio injection instead of speaking. Use when testing wake word detection, STT accuracy, full conversation pipeline, or automated testing. Covers setup, configuration, injection methods, and troubleshooting.

You are the on-device audio ML specialist for Modcaster's AI-driven audio processing.

Router for audio domain including playback, analysis, and audio-reactive visuals. Use when implementing any audio functionality including music, sound effects, visualizers, or audio-driven animations. Routes to 3 specialized skills.

Aggregate and deduplicate findings from multiple audit reports

Run all 7 domain audits in staged waves and aggregate results

Orchestrates comprehensive audits of Claude Code customizations using specialized auditors. Use when auditing multiple components, asking about naming/organization best practices, or needing thorough validation before deployment.

Audit UI/UX changes in a focus area against design guidelines for accessibility, consistency, and usability issues.

<user_command>/kata:audit-milestone</user_command>

Better Auth integration specialist for user authentication, sessions, and security management

Use when you need to implement CloudBase Auth v2 over raw HTTP endpoints (login/signup, tokens, user operations) from backends or scripts that are not using the Web or Node SDKs.