Google Slides API integration with managed OAuth. Create presentations, add slides, insert content, and manage slide formatting. Use this skill when users want to interact with Google Slides. For other third party apps, use the api-gateway skill (https://clawhub.ai/byungkyu/api-gateway).

Google Weather API - accurate, real-time weather data. Get current conditions, temperature, humidity, wind, and forecasts. Powered by Google's Weather API for reliable, hyperlocal data updated every 15 minutes. Supports any location worldwide.

HubSpot CRM API integration with managed OAuth. Manage contacts, companies, deals, and associations. Use this skill when users want to create or update CRM records, search contacts, or sync data with HubSpot. For other third party apps, use the api-gateway skill (https://clawhub.ai/byungkyu/api-gateway).

External knowledge sync — fetches data from an external REST API, maps items to RAG documents, ingests and indexes them via the RAG pipeline, with on-demand and scheduled sync. Use this skill when the user says "sync knowledge", "import knowledge base", "setup knowledge-sync", "external data ingestion", or "connect knowledge API".

Migrate MSTest v1 or v2 test project to MSTest v3. Use when user says "upgrade MSTest", "upgrade to MSTest v3", "migrate to MSTest v3", "update test framework", "modernize tests", "MSTest v3 migration", "MSTest compatibility", "MSTest v2 to v3", or build errors after updating MSTest packages from 1.x/2.x to 3.x. USE FOR: upgrading from MSTest v1 assembly references (Microsoft.VisualStudio.QualityTools.UnitTestFramework) or MSTest v2 NuGet (MSTest.TestFramework 1.x-2.x) to MSTest v3, fixing assertion overload errors (AreEqual/AreNotEqual), updating DataRow constructors, replacing .testsettings with .runsettings, timeout behavior changes, target framework compatibility (.NET 5 dropped -- use .NET 6+; .NET Fx older than 4.6.2 dropped), adopting MSTest.Sdk. First step toward MSTest v4 -- after this, use migrate-mstest-v3-to-v4. DO NOT USE FOR: migrating to MSTest v4 (use migrate-mstest-v3-to-v4), migrating between frameworks (MSTest to xUnit/NUnit), or general .NET upgrades unrelated to MSTest.

Provides knowledge and resources for projects that have vendored the @lenne.tech/nest-server core directly into their source tree (under projects/api/src/core/ instead of consuming via npm). Covers the vendor model, the flatten-fix pattern, the Upstream-to-Project sync workflow, the Project-to-Upstream PR workflow, typical conflicts, and how cosmetic changes are distinguished from substantial upstream candidates. Activates for vendored nest-server core discussions, "sync core from upstream", "port local core change to upstream", conflict resolution during vendor sync, or questions about the vendor pattern. Delegates execution to lt-dev:nest-server-core-updater (for syncs) and lt-dev:nest-server-core-contributor (for upstream PR preparation). NOT for npm-based nest-server updates (use nest-server-updating). NOT for writing new NestJS code (use generating-nest-servers).

Build a new AI agent with Olakai monitoring from scratch — project setup, SDK integration, KPI configuration, and end-to-end validation

Use this skill to implement hybrid search combining BM25 keyword search with semantic vector search using Reciprocal Rank Fusion (RRF). **Trigger when user asks to:** - Combine keyword and semantic search - Implement hybrid search or multi-modal retrieval - Use BM25/pg_textsearch with pgvector together - Implement RRF (Reciprocal Rank Fusion) for search - Build search that handles both exact terms and meaning **Keywords:** hybrid search, BM25, pg_textsearch, RRF, reciprocal rank fusion, keyword search, full-text search, reranking, cross-encoder Covers: pg_textsearch BM25 index setup, parallel query patterns, client-side RRF fusion (Python/TypeScript), weighting strategies, and optional ML reranking.

Use this skill for ANY interaction with external issue tracking and project management tools (Linear, Jira, GitHub Issues, etc.). This includes: - Reading, creating, or updating issues in Linear/Jira/GitHub - Querying project boards, backlogs, or sprints - Updating issue statuses, assignees, or labels - Fetching milestones, cycles, or sprint information - Creating or managing projects - Any API call to Linear, Jira, or similar tools Trigger phrases: "update Linear", "check Linear", "create issue", "my tickets", "project board", "backlog", "sprint", "milestone", "assign to me", "move to done", "what's in progress", "decompose", "decompose plan", "break down plan", "create issues from plan"

Rust programming patterns and ownership concepts

Rust FFI skill for C interoperability. Use when calling C libraries from Rust, generating Rust bindings with bindgen, exporting Rust functions to C with cbindgen, writing safe wrappers around unsafe FFI, or linking system and vendor libraries. Activates on queries about bindgen, cbindgen, extern "C", unsafe FFI, Rust C bindings, linking C from Rust, or sys crates.

Rust profiling skill for performance analysis. Use when generating flamegraphs from Rust binaries, measuring monomorphization bloat with cargo-llvm-lines, analysing binary size with cargo-bloat, microbenchmarking with Criterion, or interpreting inlined frames in profiles. Activates on queries about cargo flamegraph, cargo-bloat, cargo-llvm-lines, Criterion benchmarks, Rust performance profiling, or binary size analysis.

Use this skill when adding authentication, handling user input, working with secrets, creating API endpoints, or implementing payment/sensitive features. Provides comprehensive security checklist and patterns.

Set up the Weslink local development environment with shared Docker infrastructure (Traefik, PostgreSQL, Redis, MeiliSearch, Mailpit, MinIO), native PHP-FPM + nginx, HTTPS via mkcert, and shell aliases. Use when a developer says 'setup local dev', 'einrichten', 'install infra', or 'ich will das lokale Setup'.

Grafana Tempo distributed tracing backend. Covers TraceQL query language (span selectors, attribute scopes, pipeline operators, structural operators, metrics functions), trace ingestion via OTLP/Jaeger/Zipkin, Tempo architecture (distributor/ingester/compactor/querier/metrics-generator), full configuration reference with YAML, metrics-from-traces (span metrics, service graphs, TraceQL metrics), deployment modes (monolithic/microservices/Helm/Kubernetes), multi-tenancy, performance tuning, caching, and HTTP API. Use when working with distributed traces, writing TraceQL queries, deploying Tempo, configuring trace pipelines, or setting up Grafana-Tempo integrations (traces-to-logs, traces-to-metrics, traces-to-profiles).

Testing patterns for unit, integration, and E2E tests. Mock patterns for Supabase, Redis, OpenAI. Use when writing tests or setting up test infrastructure.

Provides patterns for unit testing external REST APIs using WireMock. Stubs API responses, verifies request details, simulates failures (timeouts, 4xx/5xx errors), and validates HTTP client behavior without real network calls. Use when testing service integrations with external APIs or mocking HTTP endpoints.

Write new MSTest unit tests and fix existing MSTest code using MSTest 3.x/4.x modern APIs and best practices. USE FOR: write or create MSTest unit tests, fix or modernize MSTest assertions, better MSTest assertion than Assert.IsTrue, replace hard cast with MSTest type assertion, MSTest assertion APIs (IsInstanceOfType, Contains, ContainsSingle, HasCount, IsEmpty, IsNotEmpty, DoesNotContain, StartsWith, EndsWith, MatchesRegex, IsGreaterThan, IsInRange, IsNull), fix swapped Assert.AreEqual arguments, replace ExpectedException with Assert.Throws, data-driven tests (DataRow, DynamicData, ValueTuples), test lifecycle (sealed classes, TestInitialize, TestCleanup), async tests and cancellation tokens, test parallelization (Parallelize / DoNotParallelize), MSTest.Sdk project setup. DO NOT USE FOR: broad test quality audits (use test-anti-patterns), running tests (use run-tests), MSTest version migration (use migrate-mstest-v1v2-to-v3 or migrate-mstest-v3-to-v4), xUnit/NUnit/TUnit, or non-.NET languages.

Use when writing, editing, reviewing, or discussing any SQL in the project. Triggers: SQL query, SELECT, INSERT, UPDATE, DELETE, CREATE TABLE, ALTER TABLE, migration, schema, database query, raw query, prepared statement, PDO, query builder, $wpdb, DB::, ->prepare(), ->query(), SQL formatting, inline SQL in PHP, CTE, subquery, window function, UNION, EXISTS. Applies to raw .sql files, migration DDL, inline queries in PHP adapters/repositories, and any code review involving SQL. Enforces project SQL formatting conventions — no exceptions for short queries.

Use when you need to refactor Java code based on profiling analysis findings — including reviewing docs/profiling-problem-analysis and docs/profiling-solutions, identifying specific performance bottlenecks, and implementing targeted code changes to address CPU, memory, or threading issues. This should trigger for requests such as Refactor the code with profiling; Apply profiling; Refactor the code with profiling; Optimize hot path. Part of cursor-rules-java project

Multi-layer caching strategies across CDN, browser, server, and database. PROACTIVELY activate for: (1) HTTP caching headers, (2) CDN configuration, (3) Server-side caching with Redis, (4) Cache invalidation strategies, (5) ETag implementation. Triggers: "caching", "cache strategy", "CDN", "browser cache", "server cache", "redis", "cache invalidation", "ETag", "Cache-Control"

Vector embeddings layer — pgvector for Postgres, embedding generation via AI Gateway, recursive text chunking with overlap, cosine similarity search, and automatic indexing of parsed document pages. Use this skill when the user says "setup vectors", "add embeddings", "setup ai-rag-vectors", or "add semantic search".

This skill provides API route patterns and conventions for the fitness app. Use when creating or modifying API routes, handling authentication, validating requests, or implementing error handling.

Diagnose MSBuild build performance bottlenecks using binary log analysis. Only activate in MSBuild/.NET build context. USE FOR: identifying why builds are slow by analyzing binlog performance summaries, detecting ResolveAssemblyReference (RAR) taking >5s, Roslyn analyzers consuming >30% of Csc time, single targets dominating >50% of build time, node utilization below 80%, excessive Copy tasks, NuGet restore running every build. Covers timeline analysis, Target/Task Performance Summary interpretation, and 7 common bottleneck categories. Use after build-perf-baseline has established measurements. DO NOT USE FOR: establishing initial baselines (use build-perf-baseline first), fixing incremental build issues (use incremental-build), parallelism tuning (use build-parallelism), non-MSBuild build systems. INVOKES: binlog MCP server tools (overview, errors, search, items, properties); falls back to dotnet msbuild binlog replay + grep/cat when the MCP is unavailable.

Validate data with schemas across languages and formats. Use when defining JSON Schema, using Zod (TypeScript) or Pydantic (Python), validating API request/response shapes, checking CSV/JSON data integrity, or setting up data contracts between services.

Code quality patterns and guidelines for ToolUniverse tool development. Apply when writing, fixing, or refactoring tool Python code in the ToolUniverse project. Encodes lessons from 80+ debug rounds. Use alongside devtu-fix-tool and devtu-self-evolve. Triggers: implementing tool fixes, writing new tool classes, reviewing tool code quality, checking schema correctness, looking up API-specific bug fixes.

Free AI search via Exa MCP. Web search for news/info, code search for docs/examples from GitHub/StackOverflow, company research for business intel. No API key needed.

Expert guidance for integrating FeatBit .NET Server SDK into C# and ASP.NET Core applications. Use when user asks about ".NET SDK", "C# feature flags", "ASP.NET Core FeatBit", "dotnet feature flags", or mentions .cs or .csproj files. Do not use for Node.js, Python, Java, Go, or client-side JavaScript questions.

Add a Telegram bot webhook endpoint to a Flask service using the byteforge-telegram library. Use when wiring up a Flask app to receive Telegram bot updates, validating the Telegram secret token, routing commands, and sending notifications back through the Bot API.

Interact with the GitHub API as the joelclawgithub[bot] app. Use when creating PRs, pushing commits, managing issues, checking CI status, listing repos, or any GitHub API operation. Triggers on "create a PR", "push to GitHub", "open an issue", "check CI", "list repos", "merge PR", "GitHub API", or any task requiring programmatic GitHub access. All actions appear as joelclawgithub[bot], not as @joelhooks.

Google Play Developer API (Android Publisher) integration with managed OAuth. Manage apps, subscriptions, in-app purchases, and reviews. Use this skill when users want to interact with Google Play Console programmatically. For other third party apps, use the api-gateway skill (https://clawhub.ai/byungkyu/api-gateway).

Complete Grafana operations via REST API - dashboards, Prometheus/Loki queries, alerting, annotations, Sift When user mentions Grafana, dashboards, Prometheus, Loki, metrics, logs, alerts, PromQL, LogQL

List active tasks in the configured backend. Use to see current task status.

Full-market HTX scan — top gainers/losers, volume anomalies, breadth metrics, and sector rotation hints derived from spot + futures tickers. Public, no API key required.

Understand how AI generates SQL injection, command injection, and XSS vulnerabilities. Use this skill when you need to learn about injection attack patterns in AI code, see real-world examples of injection vulnerabilities, understand why AI generates insecure database queries, or recognize vulnerable code patterns. Triggers include "SQL injection AI", "command injection", "XSS vulnerabilities", "injection attacks", "AI database queries", "shell injection", "cross-site scripting AI code".

Integrates a Flows/Dune app with the Fusion built-in PAIA agent panel using @cognite/app-sdk. Use this skill whenever a developer wants to: open the agent panel from their app, send the agent a contextual message, let the agent read app state (resources), or let the agent call actions in the app. Triggers: "fusion agent", "PAIA", "agent panel", "sendAgentMessage", "sendAgentLayoutMode", "agent server", "registerAgentServer", "connectToHostApp", "agent integration", "agent sidebar", "app-sdk agent". Always use this skill instead of manually writing agent integration code — it sets up the correct lifecycle, graceful fallback, and recommended file structure.

Create and manage Kibana alerting rules via REST API or Terraform. Use when creating, updating, or managing rule lifecycle (enable, disable, mute, snooze) or rules-as-code workflows.

Ktor HTTP Client 3.4.x — use for backend API calls, REST requests, serialization, auth, client-server communication. Always use the versions specified here verbatim; do not regress to Ktor 2.x or 3.0.x even if your training data is older.

Run the Model Context Protocol (MCP) Atlassian server in Docker, enabling integration with Jira, Confluence, and other Atlassian products. Use when you need to query Jira issues, search Confluence, or interact with Atlassian services programmatically. Requires Docker and valid Jira API credentials.

Guide for creating high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. Use when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript (MCP SDK).

Implement memory-safe programming with RAII, ownership, smart pointers, and resource management across Rust, C++, and C. Use when writing safe systems code, managing resources, or preventing memory bugs.

Use this skill when the user requests to generate, create, compose, or produce music or songs — background music, theme songs, jingles, or instrumental tracks. Generates a song from a style/mood prompt and optional lyrics via the MiniMax music API.

In-depth reference for how OpenCode works — the AI agent framework that powers this environment. Covers: agents (definition, loading, modes, model assignment), skills (discovery, loading, structure), tools (built-in + custom, permissions), commands (slash commands, frontmatter, routing), sessions (lifecycle, prompting, subagents), config (opencode.jsonc, providers, MCP servers, plugins), and the full REST/SSE API. Load this skill when you need to understand OpenCode internals, debug agent/tool/skill issues, extend the framework, create custom tools, or work with the session API.

Pipedrive API integration with managed OAuth. Manage deals, persons, organizations, activities, and pipelines. Use this skill when users want to interact with Pipedrive CRM. For other third party apps, use the api-gateway skill (https://clawhub.ai/byungkyu/api-gateway).

Implement rate limiting to prevent brute force attacks, spam, and resource abuse. Use this skill when you need to protect endpoints from automated attacks, prevent API abuse, limit request frequency, or control infrastructure costs. Triggers include "rate limiting", "rate limit", "brute force", "prevent spam", "API abuse", "resource exhaustion", "DoS", "withRateLimit", "too many requests", "429 error".

Refactor Express.js/Node.js code to improve maintainability, readability, and adherence to best practices. Transforms callback hell, fat route handlers, and outdated patterns into clean, modern JavaScript/TypeScript code. Applies async/await, controller-service-repository architecture, proper middleware patterns, and ESM modules. Identifies and fixes anti-patterns including blocking event loop, improper error handling, forEach with async callbacks, and memory leaks.

Comprehensive Rust code review that fans out across detected technology areas, running them in parallel when the agent supports subagents and sequentially otherwise. Use for pre-push or pre-PR review of .rs files.

Rust cross-compilation skill. Use when building Rust binaries for a different target architecture or OS, using cross or cargo-zigbuild for hermetic cross-compilation, configuring .cargo/config.toml for cross targets, or targeting embedded and bare-metal systems. Activates on queries about Rust cross-compilation, rustup targets, cross tool, cargo-zigbuild, aarch64-unknown-linux-gnu, thumbv7m-none-eabi, or building for embedded.

Rust debugging skill for systems programming. Use when debugging Rust binaries with GDB or LLDB, enabling Rust pretty-printers, interpreting panics and backtraces, debugging async/await with tokio-console, stepping through no_std code, or using dbg! and tracing macros effectively. Activates on queries about rust-gdb, rust-lldb, RUST_BACKTRACE, Rust panics, debugging async Rust, tokio-console, or pretty-printers.

Salesforce CRM API integration with managed OAuth. Query records with SOQL, manage sObjects (Contacts, Accounts, Leads, Opportunities), and perform batch operations. Use this skill when users want to interact with Salesforce data. For other third party apps, use the api-gateway skill (https://clawhub.ai/byungkyu/api-gateway).

Build sandboxed applications for secure code execution. Load when building AI code execution, code interpreters, CI/CD systems, interactive dev environments, or executing untrusted code. Covers Sandbox SDK lifecycle, commands, files, code interpreter, and preview URLs. Biases towards retrieval from Cloudflare docs over pre-trained knowledge.

Build sandboxed applications for secure code execution. Load when building AI code execution, code interpreters, CI/CD systems, interactive dev environments, or executing untrusted code. Covers Sandbox SDK lifecycle, commands, files, code interpreter, and preview URLs. Biases towards retrieval from Cloudflare docs over pre-trained knowledge.

Build sandboxed applications for secure code execution. Load when building AI code execution, code interpreters, CI/CD systems, interactive dev environments, or executing untrusted code. Covers Sandbox SDK lifecycle, commands, files, code interpreter, and preview URLs. Biases towards retrieval from Cloudflare docs over pre-trained knowledge.

Implement secure error handling to prevent information leakage and provide appropriate error responses. Use this skill when you need to handle errors in API routes, prevent stack trace exposure, implement environment-aware error messages, or use the error handler utilities. Triggers include "error handling", "handle errors", "error messages", "information leakage", "stack trace", "handleApiError", "production errors", "error responses".

Master SQL query optimization, indexing strategies, and EXPLAIN analysis to dramatically improve database performance and eliminate slow queries. Use when debugging slow queries, designing database schemas, or optimizing application performance.

Master SQL query optimization, indexing strategies, and EXPLAIN analysis to dramatically improve database performance and eliminate slow queries. Use when debugging slow queries, designing database schemas, or optimizing application performance.

Write and run tests across languages and frameworks. Use when setting up test suites, writing unit/integration/E2E tests, measuring coverage, mocking dependencies, or debugging test failures. Covers Node.js (Jest/Vitest), Python (pytest), Go, Rust, and Bash.

Threads API Documentation

Lightweight guidance for using the Upstash Redis RateLimit TypeScript/JavaScript SDK, including setup steps, basic usage, and pointers to advanced algorithm, features, pricing, and traffic‑protection docs.

Emulated Vercel REST API for local development and testing. Use when the user needs to interact with Vercel API endpoints locally, test Vercel integrations, emulate projects/deployments/domains, set up Vercel OAuth flows, manage environment variables, create API keys, configure protection bypass, or test without hitting the real Vercel API. Triggers include "Vercel API", "emulate Vercel", "mock Vercel", "test Vercel OAuth", "Vercel integration", "local Vercel", or any task requiring a local Vercel API.

Find unused and rarely-queried metrics in VictoriaMetrics using the metric_names_stats API, then suggest optimization actions (drop rules, relabel configs). Use this skill when the user wants to find unused metrics, identify wasted storage, optimize metric ingestion, reduce cardinality by dropping unneeded metrics, clean up scrape targets, or asks about which metrics are never queried. Also trigger when the user mentions "metric cleanup", "unused series", "what metrics can I drop", "metric optimization", "wasted ingestion", or wants to reduce VictoriaMetrics resource consumption by eliminating unnecessary metrics.

Use when you need to generate a checklist document with embedded agents inventory, following the embedded template exactly and producing INVENTORY-AGENTS-JAVA.md in the project root. This should trigger for requests such as Create embedded agents inventory checklist; Generate INVENTORY-AGENTS-JAVA.md; Use @002-agents-inventory. Part of cursor-rules-java project

Build automated AI workflows combining multiple models and services. Patterns: batch processing, scheduled tasks, event-driven pipelines, agent loops. Tools: inference.sh CLI, bash scripting, Python SDK, webhook integration. Use for: content automation, data processing, monitoring, scheduled generation. Triggers: ai automation, workflow automation, batch processing, ai pipeline, automated content, scheduled ai, ai cron, ai batch job, automated generation, ai workflow, content at scale, automation script, ai orchestration

Amazon sales volume estimator for sellers and product researchers. Estimate monthly sales and revenue from BSR (Best Seller Rank), ASIN, or keyword. Three modes: (A) BSR Calculator — input BSR + marketplace + price + category to get instant sales estimate, (B) ASIN Lookup — input ASIN to auto-fetch data and estimate sales, (C) Keyword Market Analysis — input keyword to analyze total market size and competition. Works on 12 Amazon marketplaces. No API key required. Use when: (1) estimating how many units a product sells per month, (2) sizing a market or niche opportunity, (3) analyzing competitor sales performance, (4) comparing sales across price points, (5) identifying top sellers vs long-tail distribution.

ALWAYS use when working with Angular HttpClient, HTTP requests, interceptors, error handling, or API communication in Angular applications.

Wire AnyRouter into a project, migrate from Anthropic / OpenAI / OpenRouter, and call its MCP server. Use when the user mentions AnyRouter, asks to add a unified LLM gateway, wants to swap providers without code churn, migrates an existing OpenAI/Anthropic/OpenRouter integration, sets up Claude Code / Codex / Cursor against a custom base URL, or needs help with model ids like `provider/model`, app attribution headers (`X-AnyRouter-*`), provider preferences, streaming, BYOK, or the AnyRouter MCP server at `https://anyrouter.dev/api/v1/mcp`.

Scaffold, test, document, and debug REST and GraphQL APIs. Use when the user needs to create API endpoints, write integration tests, generate OpenAPI specs, test with curl, mock APIs, or troubleshoot HTTP issues.

Generate comprehensive API documentation including endpoint descriptions, request/response examples, authentication guides, error codes, and SDKs. Creates OpenAPI/Swagger specs, REST API docs, and developer-friendly reference materials. Use when users need to document APIs, create technical references, or write developer documentation.

Azure Cosmos DB partition keys, consistency levels, change feed, SDK patterns

Expert knowledge for Azure Update Manager development including troubleshooting, best practices, decision making, limits & quotas, security, configuration, integrations & coding patterns, and deployment. Use when onboarding VMs/Arc servers, configuring schedules/ESU/hotpatch, using SDK/REST APIs, or planning cross-subscription patching, and other Azure Update Manager related development tasks. Not for Azure Automation (use azure-automation), Azure Policy (use azure-policy), Azure Monitor (use azure-monitor), Azure Resource Manager (use azure-resource-manager).

Core XMTP Agent SDK setup and patterns. Use when creating new agents, handling messages, setting up middleware, or configuring environment variables. Triggers on agent setup, XMTP configuration, message handling, or middleware implementation.

Use when designing database schemas, writing migrations, optimizing SQL queries, fixing N+1 problems, creating indexes, setting up PostgreSQL, configuring EF Core, implementing caching, partitioning tables, or any database performance question.

SQL query optimization and database performance specialist. Use when optimizing slow queries, fixing N+1 problems, designing indexes, implementing caching, or improving database performance. Works with PostgreSQL, MySQL, and other databases.

Debug FastAPI applications systematically with this comprehensive troubleshooting skill. Covers async/await issues, Pydantic validation errors (422 responses), dependency injection failures, CORS configuration problems, database session management, and circular import resolution. Provides structured four-phase debugging methodology with FastAPI-specific tools including uvicorn logging, OpenAPI docs, and middleware debugging patterns.

Embedded Rust skill for bare-metal microcontroller development. Use when using probe-rs or cargo-embed for flashing and debugging, setting up defmt logging, using the RTIC framework, configuring cortex-m-rt startup, writing no_std + no_main firmware, or choosing between panic-halt and panic-semihosting. Activates on queries about embedded Rust, probe-rs, cargo-embed, defmt, RTIC, cortex-m-rt, no_std embedded, or panic handling in embedded Rust.

Fivemanage SDK for FiveM — installation, screenshots (takeImage, takeServerImage, uploadImage), and centralized logs (Log, Info/Warn/Error). Use when integrating Fivemanage, capturing player screenshots, uploading images, or sending logs to the Fivemanage dashboard.

Create reports in Frappe including Report Builder, Query Reports (SQL), and Script Reports (Python + JS). Use when building data analysis views, dashboards, or custom reporting features.

Write ggsql queries — a grammar of graphics for SQL. Use when the user wants to create, modify, or understand a ggsql visualization query.

Make HTTPS requests from canisters to external web APIs. Covers transform functions for consensus, cycle cost management, response size limits, and idempotency patterns. Use when a canister needs to call an external API, fetch data from the web, or make HTTP requests. Do NOT use for EVM/Ethereum calls — use evm-rpc instead.

Generate read-only MongoDB queries (find) or aggregation pipelines using natural language, with collection schema context and sample documents. Use this skill whenever the user asks to write, create, or generate MongoDB queries, wants to filter/query/aggregate data in MongoDB, asks "how do I query...", needs help with query syntax, or discusses finding/filtering/grouping MongoDB documents. Also use for translating SQL-like requests to MongoDB syntax. Does NOT handle Atlas Search ($search operator), vector/semantic search ($vectorSearch operator), fuzzy matching, autocomplete indexes, or relevance scoring - use search-and-ai for those. Does NOT analyze or optimize existing queries - use mongodb-query-optimizer for that. Does NOT handle aggregation pipelines that involve write operations. Requires MongoDB MCP server.

Generate read-only MongoDB queries (find) or aggregation pipelines using natural language, with collection schema context and sample documents. Use this skill whenever the user asks to write, create, or generate MongoDB queries, wants to filter/query/aggregate data in MongoDB, asks "how do I query...", needs help with query syntax, or discusses finding/filtering/grouping MongoDB documents. Also use for translating SQL-like requests to MongoDB syntax. Does NOT handle Atlas Search ($search operator), vector/semantic search ($vectorSearch operator), fuzzy matching, autocomplete indexes, or relevance scoring - use search-and-ai for those. Does NOT analyze or optimize existing queries - use mongodb-query-optimizer for that. Does NOT handle aggregation pipelines that involve write operations. Requires MongoDB MCP server.

Work with Domino Volumes for NetApp ONTAP - enterprise-grade, multi-terabyte storage with near-instant snapshots. Covers volume creation, snapshot versioning with commit messages, cross-project sharing, mount paths (/mnt/netapp-volumes/ or /domino/netapp-volumes/), and the NetApp Volumes REST API. Use when managing large-scale data storage, needing fast no-copy snapshots, or integrating existing NetApp ONTAP infrastructure with Domino.

Migration guide from @openrouter/sdk to @openrouter/agent for callModel, tool(), stop conditions, and agent features. This skill should be used when code imports callModel, tool(), or stop conditions from @openrouter/sdk and needs to migrate to @openrouter/agent.

Control Docker containers and stacks via Portainer API. List containers, start/stop/restart, view logs, and redeploy stacks from git.

Privacy manifest (PrivacyInfo.xcprivacy) implementation including required reason APIs, tracking domains, third-party SDK declarations, and App Tracking Transparency. Use when preparing apps for App Store privacy requirements.

Refactor FastAPI/Python code to improve maintainability, readability, and adherence to best practices. This skill transforms working code into exemplary code following FastAPI patterns, Pydantic v2, and SOLID principles. It addresses fat route handlers, blocking I/O in async routes, code duplication, deep nesting, missing type hints, and improper dependency injection. Apply when you notice business logic in routes, Pydantic v1 patterns, or code violating PEP 8 conventions.

Pay-per-call API gateway for AI agents. 10 services available via x402 — no API keys, no subscriptions.

Rocky Linux changes since training cutoff (latest: 10.0) — DNF 5 (modularity removed), Valkey replaces Redis, rpmsort, rh_waived kernel arg. Load before working with Rocky Linux.

Master Rust async programming with Tokio, async traits, error handling, and concurrent patterns. Use when building async Rust applications, implementing concurrent systems, or debugging async code.

Rust sanitizers and Miri skill for memory safety validation. Use when running AddressSanitizer or ThreadSanitizer on Rust code, interpreting sanitizer reports, using Miri to detect undefined behaviour in unsafe Rust, or validating unsafe code correctness. Activates on queries about Rust ASan, Rust TSan, Miri, RUSTFLAGS sanitize, cargo miri, unsafe Rust UB, or interpreting Rust sanitizer output.

Rust compiler skill for systems programming. Use when selecting RUSTFLAGS, configuring Cargo profiles, tuning release builds, reading assembly or MIR output, understanding monomorphization, or diagnosing compilation errors. Activates on queries about rustc flags, Cargo.toml profiles, opt-level, LTO, codegen-units, target-cpu, emit asm, MIR, or Rust build performance.

Comprehensive skill for Sentry error monitoring and performance tracking. Use when Claude needs to (1) Configure Sentry SDKs for error tracking and performance monitoring, (2) Manage releases, source maps, and debug symbols via CLI, (3) Query issues, events, and metrics via API, (4) Set up alerting and notification rules, (5) Configure sampling strategies and quota management, (6) Deploy self-hosted Sentry instances, (7) Integrate with OpenTelemetry for distributed tracing, or any other Sentry automation task.

Set up Shopify CLI auth and Admin API access for a store. Install CLI, authenticate, create custom app, store access token, verify. Use whenever the user wants to connect to a Shopify store, set up Shopify API access, install Shopify CLI, or troubleshoot Shopify auth / Admin API token issues.

Persist canister state across upgrades. Covers StableBTreeMap and MemoryManager in Rust, persistent actor in Motoko, and upgrade hook patterns. Use when dealing with canister upgrades, data persistence, data lost after upgrade, stable storage, StableBTreeMap, pre_upgrade traps, or heap vs stable memory. Do NOT use for inter-canister calls or access control — use multi-canister or canister-security instead.

Auditing software supply chain security across CI/CD pipelines, container images, and language ecosystems. Detects mutable dependency references, insecure CI patterns, credential exposure risks, and missing SBOM/SLSA controls. Use when performing a supply chain audit, checking action pinning, auditing dependencies, scanning for CI security issues, reviewing container security, or assessing dependency security. Covers GitHub Actions, containers, Python, Node, Go, Rust, .NET, and more.

What belongs in system prompt vs user prompt and why. Placement decisions for API calls, system messages, and prompt architecture — system as identity/constraints/tools, user as task/context/state. Use when designing system prompts, structuring API calls, deciding where instructions belong, writing prompts for production systems, or debugging instruction compliance.