Skills
100,928 packaged capabilities and playbooks for agents. Install any of them with one command.
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Write and rewrite technical documents in ASD-STE100 Simplified Technical English. Use this skill when the user asks for STE, ASD-STE100, Simplified Technical English, simplified English, controlled language, or plain technical English. Also use it for aircraft, defense, machine, or industrial maintenance procedures, work instructions, warnings, cautions, safety notices, and manuals that must be easy to translate or easy to read for non-native readers.
Turn Steam store-page, wishlist, demo, Next Fest, and launch-window ambiguity into one packet-first Steam launch brief. Use when an indie dev, small studio, founder-marketer, or publisher helper needs to decide whether the next move is a page-promise audit, wishlist-signal check, demo-readiness gate, event-timing workback, or launch-ops runbook — especially when they say "help my Steam page", "wishlists are weak", "is our demo ready", "should we do Next Fest", or "give me a Steam launch checklist". Route broad non-game GTM work to `marketing-automation` and player-feedback/build-performance issues to the game specialist skills.
Create and populate Sumsub client lists — the named sets of keys that workflow conditions and KYT rules match against (`clientLists.<name>`). TRIGGER when the user wants to build a high-risk country list, add or remove entries, check whether a key is in a list, resolve a list name to its id, or un-blocklist an applicant. SKIP for blocklisting an applicant (that is `POST /resources/applicants/{id}/blacklist`, not a list write) and for writing the rules that reference a list (`sumsub-create-kyt-rules`, `sumsub-create-workflow`).
Implement Syncfusion Blazor Stock Chart (SfStockChart) for financial data visualization. Use this when working with stock charts, candlestick displays, OHLC data, or technical indicators like SMA, EMA, MACD, and Bollinger Bands. This skill covers period selectors, range navigation, and financial time-series data visualization in Blazor applications.
Implements advanced TypeScript type systems, creates custom type guards, utility types, and branded types, and configures tRPC for end-to-end type safety. Use when building TypeScript applications requiring advanced generics, conditional or mapped types, discriminated unions, monorepo setup, or full-stack type safety with tRPC.
Generate and maintain the system recap block in a PR description—a GitHub-rendered visual summary of which system primitives a change touches, how risky it is, and what changed. Prefer Mermaid sequence diagrams for the change; choose another graph type when it explains the diff better. Use when planning a non-trivial change (plan mode), creating or updating a pull request (recap mode), or when the user asks for a visual recap, visual plan, system review, or PR recap.
Use when you need to implement acceptance tests from maintainer-authored or maintainer-sanitized Gherkin scenario facts for Spring Boot applications — including selecting scenarios tagged @acceptance, implementing happy path tests with TestRestTemplate, @SpringBootTest, Testcontainers with @ServiceConnection for DB/Kafka, and WireMock for external REST stubs. Never ingest raw .feature files. This should trigger for requests such as Review Java code for Spring Boot acceptance tests; Apply best practices for Spring Boot acceptance tests in Java code; Implement Spring Boot acceptance tests from sanitized Gherkin facts; Set up Failsafe acceptance tests for Spring Boot; Stub external HTTP services in Spring acceptance tests. Part of Plinth Toolkit
Agentic and machine-to-machine payments on Stellar. Covers x402 (HTTP 402 paid APIs through a facilitator, fee-sponsored clients; the guide configures OZ Channels) and MPP (Machine Payments Protocol) in both Charge mode (per-request SAC) and Session mode (channel-backed off-chain commits, high-frequency; formerly called Channel mode). Defaults to USDC (SEP-41 SAC) on `stellar:testnet`/`stellar:pubnet` (CAIP-2). Use when selling a paid API to AI agents, building an x402 client, or designing a payment-channel architecture for high-frequency agent traffic.
Orchestrate multiple worker agents to implement groomed tasks. Use when multiple ready tasks need implementation, when you want autonomous multi-task execution, or when coordinating batch development work. Keywords: coordinator, orchestrator, multi-task, parallel, workers, batch, autonomous
Use Boltz2 NIM for biomolecular structure prediction and binding affinity scoring. Invoke for Boltz2, protein structures, protein-ligand/DNA/RNA complexes, SMILES or CCD ligands, pIC50/IC50 affinity scoring, mmCIF output, hosted NVIDIA API calls, or local Docker deployment
MUST be used whenever creating an AtlasTool (client-side tool) for an Atlas agent. Do NOT manually write AtlasTool definitions or wire them into useAtlasChat — this skill handles the TypeBox schema, execute function, and hook wiring. This includes tools that fetch data, render UI, call APIs, show charts, query local state, or perform any browser-side action. Triggers: AtlasTool, client tool, add tool, create tool, new tool, tool definition, agent tool.
Forward-looking gap check on one opportunity—exactly what is missing to advance it to the next stage and close, with who does what by when. Use when the user asks “what’s missing to advance [deal]”, “what do I need to move [opp] forward”, “why is [deal] stuck”, or “what’s between [account] and a close”.
Proactively monitor your book for deals gone quiet, close dates slipping into view, champion changes, renewal windows opening, and competitor mentions—surfaced as a short alert digest you can act on. Use when the user asks “what changed in my book,” “any deals gone quiet,” “what should I be worried about today,” “run my deal signals,” or sets it up as a recurring scheduled task.
The closing beat of the day — every call processed or explicitly skipped, the CRM brought current, commitments captured, and tomorrow's top three teed up. Use when the user says "end of day", "close out my day", "process today's calls", "EOD", or on an evening schedule. Companion bookend to daily-briefing.
A crawler for searching WeChat Official Account articles by keyword. Displays results in a terminal table (title/author/reads/likes/shares/favorites/publish time/article link), automatically exports CSV, and generates interactive HTML reports. Use when users need to search, crawl, or browse Official Account articles; also useful for tracking industry trends, analyzing competitor content, and gathering inspiration.
HIP and ROCm skill for AMD GPU programming. Use when writing HIP kernels with hipcc, porting CUDA code via HIPIFY, profiling with rocprof, debugging with rocgdb, or optimizing for MI300X. Activates on queries about HIP, ROCm, hipify, hipcc, rocprof, or CUDA to AMD porting.
Identify and exploit HTML injection vulnerabilities that allow attackers to inject malicious HTML content into web applications. This vulnerability enables attackers to modify page appearance, create phishing pages, and steal user credentials through injected forms
Fast tokenizers optimized for research and production. Rust-based implementation tokenizes 1GB in <20 seconds. Supports BPE, WordPiece, and Unigram algorithms. Train custom vocabularies, track alignments, handle padding/truncation. Integrates seamlessly with transformers. Use when you need high-performance tokenization or custom tokenizer training.
Amazon store A+ Content (enhanced brand content) management. Use to query, create, and update A+ Content documents; associate or disassociate ASINs; validate associations; view publishing records; submit for review; and pause display in brand-detail-page operations. Trigger when the user mentions Amazon A+ pages, A+ Content, enhanced brand content, EBC, rich product details, A+ review or publishing, ASIN associations, contentReferenceKey, or contentPublishRecords. Even without an explicit mention of the A+ API, trigger this skill whenever they want to manage branded content modules on Amazon product detail pages.
Amazon store Feed batch data submission and processing status management. Use to create Feed documents, upload Feed content to presigned URLs, submit batch files such as inventory or Listings, query or list Feeds, retrieve result documents, and cancel Feeds. Trigger when the user mentions Amazon Feed, batch inventory or product updates, submitting a Listing Feed, POST_FLAT_FILE, feedType, feedDocumentId, feedId, Feed processing status, Feed results, canceling Feeds, or Feeds API. Even if they don't explicitly say “Feed,” trigger this skill whenever they want to submit structured product or inventory data in batches through Amazon SP-API; for individual Listing CRUD, use linkfox-amazon-store-listings.
Amazon seller Listing creation and product type definition management. Use to look up or search Listings by SKU; create, fully update, partially update, and delete Listings; check ASIN listing restrictions; and query product types and their JSON Schema attribute requirements. Trigger when the user mentions Amazon Listings, listing products, editing product information, deleting Listings, seller SKU, ASIN sellability, listing restrictions, product type, product type definitions, JSON Schema, Listings Items, or Listings Restrictions. Even without an explicit mention of the API, trigger this skill whenever they want to manage their own seller Listings or confirm required fields and eligibility for listing. For the Amazon catalog, use linkfox-amazon-store-catalog; for batch submissions, use linkfox-amazon-store-feeds.
General file uploads for Amazon SP-API. Use to create upload destinations for A+ Content, Messaging, and other workflows, calculate contentMD5, and upload images or attachments to the returned presigned URLs. Trigger when the user mentions Amazon file uploads, A+ image uploads, Messaging attachments, createUploadDestinationForResource, upload destination, contentMD5, presigned uploads, the Uploads API, or SP-API file uploads. Even without an explicit mention of the Uploads API, trigger this skill whenever another Amazon SP-API operation requires obtaining a referenceable upload resource URL first. For Feed document uploads, use the dedicated flow in linkfox-amazon-store-feeds.
Build native macOS/iOS apps with Apple's Liquid Glass design language and Human Interface Guidelines. Use when creating SwiftUI interfaces, implementing translucent materials, designing cards/rows/badges, applying SF Symbols, following Apple HIG spacing/typography/color systems, or building any app that should feel native to Apple platforms. Triggers on macOS apps, iOS apps, SwiftUI UI, Apple-style design, glass effects, material backgrounds, native app design.
Reviews a diff or security scope read-only using evidence-tiered findings, structural and context-error rubrics, and repository review policy. Use when asked to "review my changes", "structural review", "review for AI patterns", or "security audit". For applying fixes use tidy; for UI defects use ui-design
Make the agent show evidence when handing work over instead of just saying “done”. Use in three cases: when an agent is about to hand off work; when the user corrects the agent a second time about the same thing (“wrong again”, “how many times have I said this”, “how do I stop it from doing this again”); or when writing tests or cleaning up useless tests. prove it, stop repeating this mistake, clean up useless tests.
React Query v4 (TanStack Query) best practices, patterns, and troubleshooting. Use when working with useQuery, useMutation, query invalidation, caching, WebSocket integration, or any async state management in React. Based on TkDodo's comprehensive blog series.
Look up seekdb database documentation. Use when users ask about seekdb features, SQL syntax, vector search, hybrid search, integrations, deployment, or any seekdb-related topics. Automatically finds relevant docs through catalog-based semantic search.
Download and install Claude Code skills from various sources. Supports GitHub repositories, compressed archives (.zip, .tar.gz, .skill), and direct URLs. Use when the user wants to download, install, or add a skill from GitHub, a URL, or an archive file. Triggers on "download skill", "install skill", "add skill from", "get skill".
Provides guidance for building and customizing Syncfusion Blazor 3D Charts. Trigger this skill whenever the user needs help with SfChart3D, 3D Column/Bar charts, axes, data binding, rotation, tilt, depth, legends, tooltips, or any configuration in Syncfusion.Blazor.Chart3D
Comprehensive guide for implementing the Syncfusion Blazor Sankey Diagram (SfSankey) component for flow visualization in Blazor applications. Use this when working with Sankey diagrams, flow visualization, or process flows. This skill covers node and link configuration, data binding, flow magnitude representation, and diagram customization. Ideal for visualizing energy flows, supply chain relationships, user journey maps, traffic analysis, and any scenario involving flows between categories or stages
New to MCP?
From what the protocol is to installing your first server, these answers cover most first questions.
An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.