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Claude Skills

The open format is called Agent Skills and works in Claude Code, Codex, Cursor and other agents — most people know it as Claude Skills.

Every Agent Skill we could find on GitHub, deduplicated by content. 86 961 files from 2 125 authors, of which 68 678 are unique — the rest is the same skill repackaged into someone else's repository. For each one: what it weighs in tokens, whether it ships runnable scripts, and which MCP servers it needs.

68 678
unique skills
out of 86 961 files found on GitHub
18 283
are copies
same content, someone else's repository
1 749
tokens, median
what a typical skill costs you in context
8 467
name collisions
two skills with one name cannot sit side by side

10 861–10 920 of 68 678

page 182 of 1 145
Touch App
by jeremylongshore

Produce a complete mobile app architecture design — platform choice, navigation structure, state management, data layer, key screens. Use when asked to "build a mobile app", "new app", "create iOS/Android app", "app architecture", or "cross-platform app".

3k tokens
Touch Feature
by jeremylongshore

Produce a mobile feature spec — user story, technical approach, component breakdown, platform-specific considerations, edge cases. Use when asked to "add a screen", "spec this feature", "mobile feature", "new tab", "push notifications", or "deep link".

2.1k tokens
Vigil Incident
by jeremylongshore

Incident response — diagnose production issues, find root cause, propose fix with rollback. Use when asked about "something is broken", "production issue", "why is this down", "incident", or "debug production".

1.5k tokens
Vigil Instrument
by jeremylongshore

Instrument a service with OpenTelemetry — RED metrics, structured logs, distributed tracing, and health checks. Outputs actual code and config, not a plan. Use when asked to "add monitoring", "instrument this", "add logging", "set up tracing", or "observability".

2.7k tokens
Vigil Recon
by jeremylongshore

Observability reconnaissance — inventory what monitoring exists, map coverage, highlight blind spots. Use when asked "what monitoring exists", "observability assessment", or "what can we see".

1.1k tokens
Vigil
by jeremylongshore

Observability and reliability engineer — SLOs, alerting, instrumentation, and incident response.

344 tokens
Volt Firmware
by jeremylongshore

Produce a complete firmware architecture spec for a described device — layer diagram, module responsibilities, HAL interface definitions, key state machines, RTOS decision. Use when asked to "design firmware architecture", "plan embedded firmware", "architect an IoT device", "how should I structure this firmware", or given a device description and asked what the firmware should look like.

3.6k tokens
Volt Ota
by jeremylongshore

Produce a complete OTA update system design — partition layout, update flow, rollback conditions, validation checks, fleet management approach, failure modes and recovery. Use when asked about "OTA updates", "firmware updates over the air", "how do I update devices in the field", "OTA strategy", or "remote firmware update design".

4.3k tokens
Volt Power
by jeremylongshore

Power management audit — analyze sleep modes, wake sources, power state machines, radio duty cycles, and battery life estimates. Use when asked to "audit power usage", "optimize battery life", "review power management", "why is my battery draining", "power budget analysis", or "sleep mode review".

1.3k tokens
Volt Driver
by jeremylongshore

Build a device driver or protocol handler — I2C sensors, BLE services, MQTT clients, SPI peripherals with interrupt-driven I/O and clean HAL abstraction. Use when asked to "write a driver", "I2C device", "BLE service", "MQTT client", or "sensor integration".

1.1k tokens
Volt Recon
by jeremylongshore

Firmware reconnaissance for takeover — inventory the MCU, peripherals, RTOS, protocols, OTA, power management, and assess code quality with risk flags. Use when asked to "understand this firmware", "device inventory", or "embedded assessment".

1k tokens
Touch Release
by jeremylongshore

Set up mobile release pipeline — Fastlane, code signing, CI, beta distribution, versioning. Use when asked about "app store setup", "release pipeline", "fastlane", "beta distribution", or "signing".

1.6k tokens
Volt
by jeremylongshore

Embedded and IoT engineer — firmware, microcontrollers, OTA updates, device protocols.

328 tokens
Warden Audit
by jeremylongshore

Full security audit — secrets, dependencies, IAM, auth, injection, XSS, HTTPS, rate limiting, public storage. Use when asked for "security audit", "check for vulnerabilities", "security review", or "are we secure".

920 tokens
Warden Harden
by jeremylongshore

Produce a hardening spec and implement it — auth patterns, security headers, rate limiting, input validation, secrets management, dependency hygiene. Use when asked to "harden this", "add security to this service", "what security do I need", or "secure this before launch".

2.4k tokens
Warden Iam
by jeremylongshore

Build IAM from scratch — roles, policies, service accounts with least privilege. Use when asked to "set up IAM", "create roles", "service accounts", or "access control".

997 tokens
Warden Recon
by jeremylongshore

Security reconnaissance — full inventory of secrets management, IAM, dependencies, auth, encryption, audit logging, and compliance gaps. Use when asked about "security posture", "how secure is this", or "security assessment".

1.1k tokens
Warden Scan
by jeremylongshore

Automated SAST + dependency vulnerability scan. Runs Semgrep (code vulnerabilities) and pip-audit (CVE-matched dependencies) and writes a structured JSON report. Use when asked to "scan for vulnerabilities", "run a security scan", "check for CVEs", or "audit dependencies".

849 tokens
Warden
by jeremylongshore

Security engineer — IAM, secrets, threat modeling, hardening, auth, and supply chain security.

337 tokens
Warden Threat
by jeremylongshore

Produce a threat model — assets, ranked threats, mitigations, accepted risks. Use when asked to "threat model this", "what could go wrong security-wise", "map our attack surface", or before designing any security-sensitive feature.

1.6k tokens
Validating AI Ethics And Fairness
by jeremylongshore

Validate AI/ML models and datasets for bias, fairness, and ethical concerns. Use when auditing AI systems for ethical compliance, fairness assessment, or bias detection. Trigger with phrases like "evaluate model fairness", "check for bias", or "validate AI ethics". '

1.5k tokens scripts
Orchestrating Multi Agent Systems
by jeremylongshore

Execute orchestrate multi-agent systems with handoffs, routing, and workflows across AI providers. Use when building complex AI systems requiring agent collaboration, task delegation, or workflow coordination. Trigger with phrases like "create multi-agent system", "orchestrate agents", or "coordinate agent workflows". '

1.4k tokens scripts
Detecting Data Anomalies
by jeremylongshore

Process identify anomalies and outliers in datasets using machine learning algorithms. Use when analyzing data for unusual patterns, outliers, or unexpected deviations from normal behavior. Trigger with phrases like "detect anomalies", "find outliers", or "identify unusual patterns". '

1.4k tokens scripts
Building Classification Models
by jeremylongshore

Build and evaluate classification models for supervised learning tasks with labeled data. Use when requesting "build a classifier", "create classification model", or "train classifier". Trigger with relevant phrases based on skill purpose. '

962 tokens scripts
Building Automl Pipelines
by jeremylongshore

Build automated machine learning pipelines with feature engineering, model selection, and hyperparameter tuning. Use when automating ML workflows from data preparation through model deployment. Trigger with phrases like "build automl pipeline", "automate ml workflow", or "create automated training pipeline". '

702 tokens scripts
Running Clustering Algorithms
by jeremylongshore

Analyze datasets by running clustering algorithms (K-means, DBSCAN, hierarchical) to identify data groups. Use when requesting "run clustering", "cluster analysis", or "group data points". Trigger with relevant phrases based on skill purpose. '

1k tokens scripts
Preprocessing Data With Automated Pipelines
by jeremylongshore

Process automate data cleaning, transformation, and validation for ML tasks. Use when requesting "preprocess data", "clean data", "ETL pipeline", or "data transformation". Trigger with relevant phrases based on skill purpose. '

1k tokens scripts
Processing Computer Vision Tasks
by jeremylongshore

Process images using object detection, classification, and segmentation. Use when requesting "analyze image", "object detection", "image classification", or "computer vision". Trigger with relevant phrases based on skill purpose. '

897 tokens scripts
Creating Data Visualizations
by jeremylongshore

Generate plots, charts, and graphs from data with automatic visualization type selection. Use when requesting "visualization", "plot", "chart", or "graph". Trigger with phrases like ''generate'', ''create'', or ''scaffold''. '

819 tokens scripts
Splitting Datasets
by jeremylongshore

Process split datasets into training, validation, and testing sets for ML model development. Use when requesting "split dataset", "train-test split", or "data partitioning". Trigger with relevant phrases based on skill purpose. '

836 tokens scripts
Optimizing Deep Learning Models
by jeremylongshore

Optimize deep learning models using Adam, SGD, and learning rate scheduling to improve accuracy and reduce training time. Use when asked to "optimize deep learning model" or "improve model performance". Trigger with phrases like ''optimize'', ''performance'', or ''speed up''. '

988 tokens scripts
Setting Up Experiment Tracking
by jeremylongshore

Implement machine learning experiment tracking using MLflow or Weights & Biases. Configures environment and provides code for logging parameters, metrics, and artifacts. Use when asked to "setup experiment tracking" or "initialize MLflow". Trigger with relevant phrases based on skill purpose. '

953 tokens scripts
Engineering Features For Machine Learning
by jeremylongshore

Execute create, select, and transform features to improve machine learning model performance. Handles feature scaling, encoding, and importance analysis. Use when asked to "engineer features" or "select features". Trigger with relevant phrases based on skill purpose. '

1.1k tokens scripts
Tuning Hyperparameters
by jeremylongshore

Optimize machine learning model hyperparameters using grid search, random search, or Bayesian optimization. Finds best parameter configurations to maximize performance. Use when asked to "tune hyperparameters" or "optimize model". Trigger with relevant phrases based on skill purpose. '

1.2k tokens scripts
Adk Deployment Specialist
by jeremylongshore

Deploy and orchestrate Vertex AI ADK agents using A2A protocol. Manages AgentCard discovery, task submission, Code Execution Sandbox, and Memory Bank. Use when asked to "deploy ADK agent" or "orchestrate agents". Trigger with phrases like ''deploy'', ''infrastructure'', or ''CI/CD''. '

683 tokens scripts
Adk Engineer
by jeremylongshore

Execute software engineer specializing in creating production-ready ADK agents with best practices, code structure, testing, and deployment automation. Use when asked to "build ADK agent", "create agent code", or "engineer ADK application". Trigger with relevant phrases based on skill purpose. '

837 tokens scripts
Genkit Production Expert
by jeremylongshore

Build production Firebase Genkit applications including RAG systems, multi-step flows, and tool calling for Node.js/Python/Go. Deploy to Firebase Functions or Cloud Run with AI monitoring. Use when asked to "create genkit flow" or "implement RAG". Trigger with relevant phrases based on skill purpose. '

1.5k tokens scripts
Basic Math
by openai
vendor

Add or multiply numbers.

79 tokens
Running Tests
by openai
vendor

Guide for running tests in the openai-dotnet repository. Use this when asked to run, debug, or validate tests, or when writing new tests. Explains test modes (Playback, Record, Live), how to identify recorded vs non-recorded tests, environment variable configuration, and what to do when recordings are missing or stale.

1.3k tokens
Ingesting Spec
by openai
vendor

Guide for ingesting the latest OpenAI TypeSpec specification into the openai-dotnet SDK. Use this when asked to update or ingest OpenAI API specs, copy base TypeSpec files from upstream, fix client TSP compile errors, or run code generation for new API areas.

812 tokens
Vibe
by foryourhealth111-pixel

Vibe Code Orchestrator (VCO) is a governed runtime entry that freezes requirements, bounds execution, and enforces verification and phase cleanup.

4k tokens scripts
Alpha Vantage
by foryourhealth111-pixel

Access real-time and historical stock market data, forex rates, cryptocurrency prices, commodities, economic indicators, and 50+ technical indicators via the Alpha Vantage API. Use when fetching stock prices (OHLCV), company fundamentals (income statement, balance sheet, cash flow), earnings, options data, market news/sentiment, insider transactions, GDP, CPI, treasury yields, gold/silver/oil prices, Bitcoin/crypto prices, forex exchange rates, or calculating technical indicators (SMA, EMA, MACD, RSI, Bollinger Bands). Requires a free API key from alphavantage.co.

1.4k tokens
Lqf Machine Learning Expert Guide
by foryourhealth111-pixel

| LQF Machine Learning Expert Guide - Routed skill for ML/Statistical Modeling with Critical Discussion Mode. Engages in critical discussion with minimum 3 rounds of iterative refinement. Challenges both user proposals and own suggestions with fact-based critique. Demands evidence and baselines before accepting solutions.

7.8k tokens
Astropy
by foryourhealth111-pixel

Comprehensive Python library for astronomy and astrophysics. This skill should be used when working with astronomical data including celestial coordinates, physical units, FITS files, cosmological calculations, time systems, tables, world coordinate systems (WCS), and astronomical data analysis. Use when tasks involve coordinate transformations, unit conversions, FITS file manipulation, cosmological distance calculations, time scale conversions, or astronomical data processing.

2.9k tokens
Cancel Ralph
by foryourhealth111-pixel

Codex-compatible cancel command for Ralph loop state, preserving the original command name.

247 tokens scripts
Autonomous Builder
by foryourhealth111-pixel

Full-stack software development agent for design, implementation, testing, and deployment. Use when the user explicitly asks for end-to-end project creation, feature development, bug fixing, or code refactoring.

11k tokens scripts
Bio Database Evidence
by foryourhealth111-pixel

Unified biological database evidence owner. Use for gene annotation, variant clinical significance, cancer mutation evidence, GWAS trait associations, pathway mapping, target-disease evidence, protein structures, protein interaction networks, reference single-cell census queries, and cross-database biological ID mapping. Do not use for full single-cell analysis, bulk RNA-seq differential expression, BAM/VCF processing, protein embedding models, metabolic flux modeling, genomic interval ML, or flow-cytometry file parsing.

772 tokens
Chembl Database
by foryourhealth111-pixel

Query ChEMBL bioactive molecules and drug discovery data. Search compounds by structure/properties, retrieve bioactivity data (IC50, Ki), find inhibitors, perform SAR studies, for medicinal chemistry.

2.6k tokens scripts
Biopython
by foryourhealth111-pixel

Primary retained Python toolkit for molecular biology sequence work. Preferred for sequence manipulation, FASTA/FASTQ/GenBank parsing, Bio.Entrez, BLAST workflows, alignments, structures, and phylogenetics. For biological database evidence lookup, use bio-database-evidence. For single-cell workflows use scanpy. For direct literature REST API, use pubmed-database.

3.5k tokens
Clinpgx Database
by foryourhealth111-pixel

Access ClinPGx pharmacogenomics data (successor to PharmGKB). Query gene-drug interactions, CPIC guidelines, allele functions, for precision medicine and genotype-guided dosing decisions.

5.2k tokens scripts
Clinical Reports
by foryourhealth111-pixel

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.

9.9k tokens scripts
Clinicaltrials Database
by foryourhealth111-pixel

Query ClinicalTrials.gov via API v2. Search trials by condition, drug, location, status, or phase. Retrieve trial details by NCT ID, export data, for clinical research and patient matching.

3.7k tokens scripts
Citation Management
by foryourhealth111-pixel

Comprehensive citation management for academic research. Resolve bibliographic identifiers, extract accurate metadata, validate citations, deduplicate references, and generate properly formatted BibTeX entries. This skill should be used when you need to verify citation information, convert DOIs/PMIDs/arXiv IDs to BibTeX, or ensure reference accuracy in scientific writing.

7.6k tokens scripts
Coding Tutor
by foryourhealth111-pixel

Personalized coding tutorials that build on your existing knowledge and use your actual codebase for examples. Creates a persistent learning trail that compounds over time using the power of AI, spaced repetition and quizes.

3k tokens scripts
Code Reviewer
by foryourhealth111-pixel

Default code-quality route for broad code review, PR review, maintainability, correctness, and regression-risk checks. Do not use as the primary route for dedicated OWASP/security audits, review-feedback handling, completion verification, AI-code cleanup, or TDD/test-first work.

1.4k tokens scripts
Commit With Reflection
by foryourhealth111-pixel

Git提交与调试反思报告生成技能。用于分析开发过程中的错误、调试步骤和解决方案,生成结构化的中文反思报告,并创建包含报告引用的Git提交。显式请求词:反思提交、智能提交、生成调试报告、commit with reflection。

5.4k tokens scripts zh
Context Hunter
by foryourhealth111-pixel

Discover codebase patterns, conventions, and unwritten rules before making changes. Use when implementing features, fixing bugs, or refactoring code.

503 tokens
Creating Data Visualizations
by foryourhealth111-pixel

| Create analytical charts and plots from existing data. Use for exploratory or reporting visuals such as bars, lines, scatters, and dashboards; not for publication-grade scientific figures or AI-generated schematics.

403 tokens scripts
Cs Foundations
by foryourhealth111-pixel

Master discrete mathematics, logic, formal proofs, and computational thinking. Build the mathematical foundation for all computer science.

837 tokens scripts
Datacommons Client
by foryourhealth111-pixel

Work with Data Commons, a platform providing programmatic access to public statistical data from global sources. Use this skill when working with demographic data, economic indicators, health statistics, environmental data, or any public datasets available through Data Commons. Applicable for querying population statistics, GDP figures, unemployment rates, disease prevalence, geographic entity resolution, and exploring relationships between statistical entities.

2.1k tokens

Claude Skills — questions

Answers built from the skills we actually parsed.

What is a Claude Skill?
A folder with a SKILL.md file: instructions that teach an agent to do one thing well, optionally with scripts and reference files alongside. The format is open and called Agent Skills — Claude Code, Codex and other agents read the same files. It is not a program you run; it is knowledge the agent loads when the task calls for it.
How is a skill different from an MCP server?
A server gives the agent new abilities — it connects to something and exposes tools. A skill gives the agent knowledge: how to use what it already has. They combine, and often literally: 13 478 of the skills here declare which MCP servers they need to work.
Why are there fewer skills here than in other catalogues?
Because we deduplicate by content. Of 86 961 files found on GitHub, 68 678 are unique — the rest is the same skill copied into someone else's repository, word for word. Catalogues that count files rather than skills show every copy as a separate entry.
What does the token count mean?
A skill is loaded in stages. Its name and description stay in the model's context all the time; the body of SKILL.md is read when the skill is used; other files in the folder, such as references, scripts and fonts, are opened only when the skill asks for them. The number we show is SKILL.md, the part every use pays for. A big folder is not a big cost: one official skill ships 83 font files, and none of them ever enters the context.
How do I install a skill?
Copy the skill folder into ~/.claude/skills for personal use, or into .claude/skills inside a project. The agent picks it up by the name in the SKILL.md header — which is worth checking: 8 467 skills here share a name with another skill, and two of them cannot sit side by side.