Topic: codex
8,457 skills in this topic.
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openclaw
Install and configure the OpenClaw personal AI assistant. Core Scenario: When the user needs to deploy, uninstall, or configure their own local AI assistant on their device.
x-cmd/skill 19
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hostname
Manage the system's hostname, including viewing current name and setting new names. Core Scenario: When the user needs to identify the device name or change the system hostname.
x-cmd/skill 19
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anndata
Data structure for annotated matrices in single-cell analysis. Use when working with .h5ad files or integrating with the scverse ecosystem. This is the data format skill—for analysis workflows use scanpy; for probabilistic models use scvi-tools; for population-scale queries use cellxgene-census.
x-cmd/skill 19
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stable-baselines3
Production-ready reinforcement learning algorithms (PPO, SAC, DQN, TD3, DDPG, A2C) with scikit-learn-like API. Use for standard RL experiments, quick prototyping, and well-documented algorithm implementations. Best for single-agent RL with Gymnasium environments. For high-performance parallel training, multi-agent systems, or custom vectorized environments, use pufferlib instead.
x-cmd/skill 19
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polars
Fast in-memory DataFrame library for datasets that fit in RAM. Use when pandas is too slow but data still fits in memory. Lazy evaluation, parallel execution, Apache Arrow backend. Best for 1-100GB datasets, ETL pipelines, faster pandas replacement. For larger-than-RAM data use dask or vaex.
x-cmd/skill 19
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datamol
Pythonic wrapper around RDKit with simplified interface and sensible defaults. Preferred for standard drug discovery including SMILES parsing, standardization, descriptors, fingerprints, clustering, 3D conformers, parallel processing. Returns native rdkit.Chem.Mol objects. For advanced control or custom parameters, use rdkit directly.
x-cmd/skill 19
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simpy
Process-based discrete-event simulation framework in Python. Use this skill when building simulations of systems with processes, queues, resources, and time-based events such as manufacturing systems, service operations, network traffic, logistics, or any system where entities interact with shared resources over time.
x-cmd/skill 19
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ensembl-database
Query Ensembl genome database REST API for 250+ species. Gene lookups, sequence retrieval, variant analysis, comparative genomics, orthologs, VEP predictions, for genomic research.
x-cmd/skill 19
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nu
Enhanced interface for Nushell, enabling x-cmd integration, documentation search, and AI-powered command generation. Core Scenario: When the user needs to set up x-cmd in Nushell or search Nushell documentation via CLI.
x-cmd/skill 19
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ls
Enhanced ls command providing unified access to system resources like CPU, memory, and processes. Core Scenario: When the user needs a quick summary of files and system resource states via enhanced subcommands.
x-cmd/skill 19
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gemini
Integrate Google Gemini AI for chat, text analysis, and multimodal tasks like image understanding. Core Scenario: When the user wants to use Gemini models for advanced chat, translation with file context, or analyzing images via CLI.
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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onsh
Enhanced interface for xonsh, providing x-cmd integration, documentation search, and AI capabilities. Core Scenario: When the user needs to integrate x-cmd with xonsh or search xonsh documentation via CLI.
x-cmd/skill 19
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ps
Display running process information with support for interactive UI and structured exports (CSV, JSON, TSV). Core Scenario: When the user needs to analyze system processes or export process data for external automation.
x-cmd/skill 19
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gg
Search the web using Google Gemini AI, combining search results with AI-generated answers. Core Scenario: When the user needs real-time information from the web with AI-summarized responses and source citations.
x-cmd/skill 19
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rowan
Cloud-based quantum chemistry platform with Python API. Preferred for computational chemistry workflows including pKa prediction, geometry optimization, conformer searching, molecular property calculations, protein-ligand docking (AutoDock Vina), and AI protein cofolding (Chai-1, Boltz-1/2). Use when tasks involve quantum chemistry calculations, molecular property prediction, DFT or semiempirical methods, neural network potentials (AIMNet2), protein-ligand binding predictions, or automated computational chemistry pipelines. Provides cloud compute resources with no local setup required.
x-cmd/skill 19
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hmdb-database
Access Human Metabolome Database (220K+ metabolites). Search by name/ID/structure, retrieve chemical properties, biomarker data, NMR/MS spectra, pathways, for metabolomics and identification.
x-cmd/skill 19
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brand-guidelines
Applies Anthropic's official brand colors and typography to any sort of artifact that may benefit from having Anthropic's look-and-feel. Use it when brand colors or style guidelines, visual formatting, or company design standards apply.
x-cmd/skill 19
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telegram
Send messages and files to Telegram groups or channels using bot tokens. Core Scenario: When the user needs to automate alerts or share files with Telegram chats via bot.
x-cmd/skill 19
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perplexity-search
Perform AI-powered web searches with real-time information using Perplexity models via LiteLLM and OpenRouter. This skill should be used when conducting web searches for current information, finding recent scientific literature, getting grounded answers with source citations, or accessing information beyond the model knowledge cutoff. Provides access to multiple Perplexity models including Sonar Pro, Sonar Pro Search (advanced agentic search), and Sonar Reasoning Pro through a single OpenRouter API key.
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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find
Search for files and directories in a directory hierarchy with an interactive FZF application. Core Scenario: When the user needs to find files based on name, size, type, or other metadata.
x-cmd/skill 19
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rg
Modern, high-speed line-oriented search tool (ripgrep) with an interactive FZF interface. Core Scenario: When the user needs to perform recursive text searches in large codebases or directories.
x-cmd/skill 19
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umap-learn
UMAP dimensionality reduction. Fast nonlinear manifold learning for 2D/3D visualization, clustering preprocessing (HDBSCAN), supervised/parametric UMAP, for high-dimensional data.
x-cmd/skill 19