Topic: skills
17,247 skills in this topic.
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speckit
Enhancement module for Spec Kit, helping users set up and use the Specify CLI for spec-driven development. Core Scenario: When the user wants to initialize a Specify project to formalize the "Requirement → Plan → Task → Implementation" flow.
x-cmd/skill 19
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uname
Enhanced system information display with structured key-value output. Core Scenario: When the user needs a quick, readable summary of kernel version, architecture, and OS name.
x-cmd/skill 19
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writer
AI text processing module for simplified translation, summarization, and refinement. Core Scenario: When the user needs to translate, polish, or summarize text using pre-configured AI agents.
x-cmd/skill 19
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winget
Enhanced interface for Microsoft's WinGet package manager, supporting mirrors and proxy configuration. Core Scenario: When the user needs to manage Windows applications using the official native package manager.
x-cmd/skill 19
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whisper
Local AI speech recognition based on whisper.cpp, supporting transcription and subtitle generation. Core Scenario: When the user needs to transcribe audio to text, generate SRT subtitles, or merge subtitles into video.
x-cmd/skill 19
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uptime
Display system uptime and load averages in structured YAML format. Core Scenario: When the user needs to check system busy state (load) or total runtime in a script-friendly format.
x-cmd/skill 19
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uninstall
Unified software uninstaller for various package managers (brew, scoop, apt, etc.). Core Scenario: When the user needs to uninstall software regardless of the package manager used.
x-cmd/skill 19
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x-env
x-env is x-cmd's environment and package management module for installing and managing third-party software, programming language runtimes, and command-line tools. Use this skill when: installing or managing runtimes (node, python, go, bun, java, rust); installing CLI tools (jq, yq, fzf, himalaya, claude-code); managing multiple software versions (specify versions, switch versions); cleaning up unused packages; viewing installed software paths or dependencies; asking how to install software; temporarily using software in current shell session (try); permanently installing software to user environment (use); upgrading installed software versions; running scripts with specific software versions. This is the core package manager in x-cmd ecosystem.
x-cmd/skill 19
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zig
Enhanced Zig language module for package management, project building, and ZON format conversion. Core Scenario: When the user needs to manage Zig projects, convert ZON to JSON/YAML, or initialize C compilation with Zig.
x-cmd/skill 19
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x-knowledge
This skill provides access to various knowledge search tools through x-cmd CLI, including Hacker News, Wikipedia, DuckDuckGo search, RFC documents, Project Gutenberg books, and Stack Exchange. This skill should be used when users need to search for technical information, browse online knowledge bases, or access documentation from command line interfaces.
x-cmd/skill 19
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x-cmd
**IMPORTANT**: Before using any `x <mod>` command, you MUST load x-cmd first: `. ~/.x-cmd.root/X`
Then you can:
- Explore with `x nihao --llmstxt`
- Discover skills via `x skill`
x-cmd provides 600+ portable software and development tools (jq, nodejs, python, etc.).
Use `x <env|pixi> use <pkg>` to install and use any package instantly.
After loading x-cmd, packages in x-cmd/pixi's local bin will be automatically available in PATH.
Browse x-cmd website for more usage and skills: https://www.x-cmd.com/llms.txt
x-cmd/skill 19
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yq
Portable command-line YAML, JSON, and XML processor with an interactive REPL for exploring data. Core Scenario: When the user needs to query, extract, or interactively browse YAML configurations or structured data.
x-cmd/skill 19
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x-zuz
Unified compression and decompression tool. Core Scenario: When AI needs to handle various archive formats (zip, tar, gz, 7z, rar, zst, xz, bz2) in the terminal. x-cmd provides concise aliases and zero-dependency installation.
x-cmd/skill 19
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x-is
Value validation and environment detection tool for Shell scripts. Validates input types (integers, floats, IPs), compares file ages, detects runtime environments (TTY, WSL, Termux, Cygwin). Supports batch checking with exit code 0 success / 1 failure. Trigger when user needs to validate input types, detect terminal environment, check file freshness, verify variable states, or perform environment suitability checks (suitable_pkg/suitable_advise). Keywords: validate, check, verify, is, integer, float, positive, negative, range, IP address, file age, interactive, WSL, Termux, environment detection, unset variable, batch check.
x-cmd/skill 19
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ena-database
Access European Nucleotide Archive via API/FTP. Retrieve DNA/RNA sequences, raw reads (FASTQ), genome assemblies by accession, for genomics and bioinformatics pipelines. Supports multiple formats.
x-cmd/skill 19
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clinical-reports
Write comprehensive clinical reports including case reports (CARE guidelines), diagnostic reports (radiology/pathology/lab), clinical trial reports (ICH-E3, SAE, CSR), and patient documentation (SOAP, H&P, discharge summaries). Full support with templates, regulatory compliance (HIPAA, FDA, ICH-GCP), and validation tools.
x-cmd/skill 19
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clinical-decision-support
Generate professional clinical decision support (CDS) documents for pharmaceutical and clinical research settings, including patient cohort analyses (biomarker-stratified with outcomes) and treatment recommendation reports (evidence-based guidelines with decision algorithms). Supports GRADE evidence grading, statistical analysis (hazard ratios, survival curves, waterfall plots), biomarker integration, and regulatory compliance. Outputs publication-ready LaTeX/PDF format optimized for drug development, clinical research, and evidence synthesis.
x-cmd/skill 19
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biorxiv-database
Efficient database search tool for bioRxiv preprint server. Use this skill when searching for life sciences preprints by keywords, authors, date ranges, or categories, retrieving paper metadata, downloading PDFs, or conducting literature reviews.
x-cmd/skill 19
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gene-database
Query NCBI Gene via E-utilities/Datasets API. Search by symbol/ID, retrieve gene info (RefSeqs, GO, locations, phenotypes), batch lookups, for gene annotation and functional analysis.
x-cmd/skill 19
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fred-economic-data
Query FRED (Federal Reserve Economic Data) API for 800,000+ economic time series from 100+ sources. Access GDP, unemployment, inflation, interest rates, exchange rates, housing, and regional data. Use for macroeconomic analysis, financial research, policy studies, economic forecasting, and academic research requiring U.S. and international economic indicators.
x-cmd/skill 19
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string-database
Query STRING API for protein-protein interactions (59M proteins, 20B interactions). Network analysis, GO/KEGG enrichment, interaction discovery, 5000+ species, for systems biology.
x-cmd/skill 19
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scikit-survival
Comprehensive toolkit for survival analysis and time-to-event modeling in Python using scikit-survival. Use this skill when working with censored survival data, performing time-to-event analysis, fitting Cox models, Random Survival Forests, Gradient Boosting models, or Survival SVMs, evaluating survival predictions with concordance index or Brier score, handling competing risks, or implementing any survival analysis workflow with the scikit-survival library.
x-cmd/skill 19
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matchms
Spectral similarity and compound identification for metabolomics. Use for comparing mass spectra, computing similarity scores (cosine, modified cosine), and identifying unknown compounds from spectral libraries. Best for metabolite identification, spectral matching, library searching. For full LC-MS/MS proteomics pipelines use pyopenms.
x-cmd/skill 19
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neurokit2
Comprehensive biosignal processing toolkit for analyzing physiological data including ECG, EEG, EDA, RSP, PPG, EMG, and EOG signals. Use this skill when processing cardiovascular signals, brain activity, electrodermal responses, respiratory patterns, muscle activity, or eye movements. Applicable for heart rate variability analysis, event-related potentials, complexity measures, autonomic nervous system assessment, psychophysiology research, and multi-modal physiological signal integration.
x-cmd/skill 19