Check which C source lines are not covered by Python flow tests. Use this when you want to ensure your C code changes are exercised by end-to-end Python tests. For Rust coverage, use /check-rust-coverage instead.

Use when deciding whether make bazel_prepare is required before build or test commands based on local file changes in TiDB.

Build GraalVM native images using the native-maven-plugin (org.graalvm.buildtools). Use this skill to build Java applications with Maven, configure pom.xml native image settings, run native tests, collect metadata, or resolve build or runtime issues.

Build Amazon Machine Images (AMIs) with Packer using the amazon-ebs builder. Use when creating custom AMIs for EC2 instances.

Azure PostgreSQL Flexible Server SDK for .NET. Database management for PostgreSQL Flexible Server deployments. Use for creating servers, databases, firewall rules, configurations, backups, and high availability. Triggers: "PostgreSQL", "PostgreSqlFlexibleServer", "PostgreSQL Flexible Server", "Azure Database for PostgreSQL", "PostgreSQL database management", "PostgreSQL firewall", "PostgreSQL backup", "Postgres".

Azure Resource Manager SDK for Durable Task Scheduler in .NET. Use for MANAGEMENT PLANE operations: creating/managing Durable Task Schedulers, Task Hubs, and retention policies via Azure Resource Manager. Triggers: "Durable Task Scheduler", "create scheduler", "task hub", "DurableTaskSchedulerResource", "provision Durable Task", "orchestration scheduler".

Enterprise Grid Admin API operations with the Slack Go SDK. Use when managing organization-wide conversations, assigning or listing admin roles, configuring team settings, restricting channel access, or building internal tooling for Slack workspace/org administrators.

Deep research and discovery before building something new. Explores local projects for reusable code, researches competitors, reads forums and reviews, analyses plugin ecosystems, investigates technical options, and produces a comprehensive research brief. Three depths: focused (30 min), wide (1-2 hours), deep (3-6 hours). Triggers: 'research this', 'discovery', 'explore the space', 'what should I build', 'competitive analysis', 'before I start building', 'research before coding'. Not for cited fact-checking research reports (a separate harness does those); this is pre-build product discovery.

Receive and verify SendGrid webhooks. Use when setting up SendGrid webhook handlers, debugging signature verification, or handling email delivery events.

Sets up and configures Hookdeck Outpost for outbound event delivery to customer endpoints. Use when sending webhooks to customers, building webhook delivery infrastructure, managing tenants and destinations with supported types (webhooks, Hookdeck Event Gateway, AWS SQS/Kinesis/S3, Azure Service Bus, GCP Pub/Sub, RabbitMQ, Kafka), or aligning topics and publishes. EventBridge support is tracked in GitHub issues.

Gather architectural context about an internal system from code and documentation across the organization — use when asked to understand a system's architecture, find its repos, or get an overview before working on it.

Use when an acceptance test panics with 'interface {} is nil, not *clientset.ClientSet' in a CheckDestroy or check helper, or a helper calls testAccProvider.Meta().

Use when a plan is never empty and an attribute the user never configured shows (known after apply) forever, next to a JSON/normalized attribute that shows as unchanged. Explains the framework rule and the two fixes.

Use when a Terraform Plugin Framework resource import reads required DynamicAttribute values. Handle imported partial state before converting dynamic values.

USE THIS when migrating a CDS React Native component to native iOS, or when writing or reviewing SwiftUI in packages/cds-ios or apps/ios-gallery. Covers rewrite patterns (Style vs SwiftUI API vs CDS view), RN visual spec (not HIG look-alikes), HIG-styled control enforcement, tokens, gallery, and tests.

Turn Figma designs into CDS React (cds-web) or React Native (cds-mobile) code. Use when the user shares a Figma design URL (e.g. `figma.com/design/...?node-id=...`) or asks to "implement this design" or "build this from Figma" in a frontend project that is using Coinbase Design System (CDS). Do not use for general CDS UI work with no Figma reference (use `cds-code`), or for design critique without an implementation request.

MUST be used whenever fixing test coverage for a Flows app to meet the 80% line coverage hard gate. This skill finds AND fixes coverage gaps — it configures tooling, writes missing tests, covers untested paths, and refactors code for testability. It does not just report. Triggers: test coverage, fix tests, write tests, add tests, coverage fix, 80% coverage, coverage gate, missing tests, testability, vitest coverage, jest coverage.

Create new skills, modify and improve existing skills, and measure skill performance. Use when users want to create a skill from scratch for Claude Code or Cursor, update or optimize an existing skill, run evals to test a skill, benchmark skill performance with variance analysis, or optimize a skill's description for better triggering accuracy.

MUST be used whenever integrating CogniteFileViewer into a Flows app to preview CDF files (PDFs, images, text). Do NOT manually wire up react-pdf or file resolution — this skill handles installation, Vite config, worker setup, and component usage. Triggers: file viewer, file preview, CogniteFileViewer, PDF viewer, view CDF files, document viewer, preview file.

Nuclear-grade 12-agent pre-publish release gate. Runs /get-unpublished-changes to detect all changes since last npm release, spawns up to 10 ultrabrain agents for deep per-change analysis, invokes /review-work (orchestrator manual QA plus one gate reviewer) for holistic review, and 1 oracle for overall release synthesis. Runs ONLY when the user explicitly asks for a pre-publish review — a plain publish/release request MUST NOT trigger this; /publish ships directly. Triggers: 'pre-publish review', 'review before publish', 'release review', 'pre-release review', 'ready to publish?', 'can I publish?', 'pre-publish', 'safe to publish', 'publishing review', 'pre-publish check'.