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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. 79 870 files from 1 769 authors, of which 62 217 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.

62 217
unique skills
out of 79 870 files found on GitHub
17 653
are copies
same content, someone else's repository
1 743
tokens, median
what a typical skill costs you in context
7 935
name collisions
two skills with one name cannot sit side by side

36 301–36 360 of 62 217

page 606 of 1 037
Goal Analyzer
by BioTender-max

分析健康目标数据、识别目标模式、评估目标进度,并提供个性化目标管理建议。支持与营养、运动、睡眠等健康数据的关联分析。

4k tokens zh
GSEA and Pathway Enrichment Analysis
by BioTender-max

Gene set enrichment analysis with correct geneset format handling. Critical guidance for loading pathway databases and running enrichment in OmicVerse.

1k tokens
Hemoglobinopathy Analysis Agent
by BioTender-max
1k tokens
Hrd Analysis Agent
by BioTender-max
1k tokens
Image Analysis
by BioTender-max
2k tokens scripts
Immune Checkpoint Combination Agent
by BioTender-max
1k tokens
Joint Calling
by BioTender-max
4k tokens scripts
Knowledge Synthesis
by BioTender-max
2k tokens
Kragen Knowledge Graph
by BioTender-max
536 tokens
Lab Results
by BioTender-max
4k tokens scripts
Labstep
by BioTender-max

Interact with the Labstep electronic lab notebook API using labstepPy. Query experiments, protocols, resources, inventory, and other lab entities.

2k tokens
Leads Literature Mining
by BioTender-max
507 tokens
Linear Solvers
by BioTender-max

Select and configure linear solvers for systems Ax=b in dense and sparse problems. Use when choosing direct vs iterative methods, diagnosing convergence issues, estimating conditioning, selecting preconditioners, or debugging stagnation in GMRES/CG/BiCGSTAB.

16k tokens scripts
Liquid Biopsy Analytics Agent
by BioTender-max
2k tokens
Literature Search
by BioTender-max

Comprehensive scientific literature search across PubMed, arXiv, bioRxiv, medRxiv. Natural language queries powered by Valyu semantic search.

2k tokens scripts
Lobster Bioinformatics
by BioTender-max

Run bioinformatics analyses using Lobster AI - single-cell RNA-seq, bulk RNA-seq, literature mining, dataset discovery, quality control, and visualization. Use when analyzing genomics data, searching for papers/datasets, or working with H5AD, CSV, GEO/SRA accessions, or biological data. Requires lobster-ai package installed.

3k tokens scripts
Long Read Sequencing Agent
by BioTender-max
1k tokens
Markdown Mermaid Writing
by BioTender-max

Comprehensive markdown and Mermaid diagram writing skill. Use when creating any scientific document, report, analysis, or visualization. Establishes text-based diagrams as the default documentation standard with full style guides (markdown + mermaid), 24 diagram type references, and 9 document templates.

70k tokens
Mcpmed Bioinformatics Server
by BioTender-max

Model Context Protocol (MCP) server for bioinformatics web services like GEO, STRING, and UCSC Cell Browser.

352 tokens
Medea Therapeutic Discovery
by BioTender-max

An AI agent for therapeutic discovery that executes transparent, multi-step omics analyses including research planning, code execution, and literature reasoning.

416 tokens
Medical Entity Extractor
by BioTender-max

Extract medical entities (symptoms, medications, lab values, diagnoses) from patient messages.

1k tokens
Medical Imaging Review
by BioTender-max

> Write comprehensive literature reviews for medical imaging AI research. Use when writing survey papers, systematic reviews, or literature analyses on topics like segmentation, detection, classification in CT, MRI, X-ray, ultrasound, or pathology imaging. Triggers on requests for "review paper", "survey", "literature review", "综述", "systematic review", or mentions of writing academic reviews on deep learning for medical imaging.

6k tokens
Medical Research Toolkit
by BioTender-max

Query 14+ biomedical databases for drug repurposing, target discovery, clinical trials, and literature research. Access ChEMBL, PubMed, ClinicalTrials.gov, OpenTargets, OpenFDA, OMIM, Reactome, KEGG, UniProt, and more through a unified MCP endpoint. Use when researching disease targets, finding approved/investigational drugs, searching clinical evidence, discovering genetic associations, or analyzing compound bioactivity data.

22k tokens scripts
Medrxiv Search
by BioTender-max

Search medRxiv medical preprints with natural language queries. Powered by Valyu semantic search.

2k tokens scripts
Mental Health Analyzer
by BioTender-max

分析心理健康数据、识别心理模式、评估心理健康状况、提供个性化心理健康建议。支持与睡眠、运动、营养等其他健康数据的关联分析。

6k tokens zh
Mesh Generation
by BioTender-max

Plan and evaluate mesh generation for numerical simulations. Use when choosing grid resolution, checking aspect ratios/skewness, estimating mesh quality constraints, or planning adaptive mesh refinement for PDE discretization.

6k tokens scripts
Microbiome Cancer Agent
by BioTender-max
1k tokens
Molecular Glue Discovery Agent
by BioTender-max
2k tokens
Molecule Evolution Agent
by BioTender-max
1k tokens scripts
Mpn Progression Monitor Agent
by BioTender-max
2k tokens
Mpn Research Assistant
by BioTender-max
2k tokens
Mrd Edge Detection Agent
by BioTender-max
2k tokens
Multi Ancestry Prs Agent
by BioTender-max
2k tokens
Multi Search Engine
by BioTender-max

Multi search engine integration with 17 engines (8 CN + 9 Global). Supports advanced search operators, time filters, site search, privacy engines, and WolframAlpha knowledge queries. No API keys required.

8k tokens
Multimodal Medical Imaging
by BioTender-max
1k tokens scripts
Multimodal Radpath Fusion Agent
by BioTender-max
2k tokens
Myeloma Mrd Agent
by BioTender-max
1k tokens
Ngs Analysis
by BioTender-max
1k tokens
Nicheformer Spatial Agent
by BioTender-max
2k tokens
Nk Cell Therapy Agent
by BioTender-max
1k tokens
Nonlinear Solvers
by BioTender-max

Select and configure nonlinear solvers for f(x)=0 or min F(x). Use for Newton methods, quasi-Newton (BFGS, L-BFGS), Broyden, Anderson acceleration, diagnosing convergence issues, choosing line search vs trust region, and analyzing Jacobian quality.

22k tokens scripts
Numerical Integration
by BioTender-max

Select and configure time integration methods for ODE/PDE simulations. Use when choosing explicit/implicit schemes, setting error tolerances, adapting time steps, diagnosing integration accuracy, planning IMEX splitting, or handling stiff/non-stiff coupled systems.

18k tokens scripts
Numerical Stability
by BioTender-max

Analyze and enforce numerical stability for time-dependent PDE simulations. Use when selecting time steps, choosing explicit/implicit schemes, diagnosing numerical blow-up, checking CFL/Fourier criteria, von Neumann analysis, matrix conditioning, or detecting stiffness in advection/diffusion/reaction problems.

11k tokens scripts
Nutrition Analyzer
by BioTender-max

分析营养数据、识别营养模式、评估营养状况,并提供个性化营养建议。支持与运动、睡眠、慢性病数据的关联分析。

5k tokens zh
Occupational Health Analyzer
by BioTender-max

分析职业健康数据、识别工作相关健康风险、评估职业健康状况、提供个性化职业健康建议。支持与睡眠、运动、心理健康等其他健康数据的关联分析。

2k tokens zh
Ontology Explorer
by BioTender-max

> Parse, navigate, and query materials science ontology structure (classes, properties, hierarchy). Use when exploring an ontology like CMSO, understanding class relationships, finding properties for a given class, or searching for ontology terms related to a materials science concept. Supports OWL/XML format from the OCDO ecosystem (CMSO, ASMO, CDCO, PODO, PLDO, LDO).

31k tokens scripts
Ontology Mapper
by BioTender-max

> Map materials science terms, crystal structures, and sample descriptions to ontology classes and properties. Supports any ontology registered in ontology_registry.json. Use when translating natural-language material descriptions to ontology terms, annotating simulation inputs with ontology metadata, or mapping crystal parameters (space group, Bravais lattice, lattice constants) to standardized ontology representations.

16k tokens scripts
Ontology Validator
by BioTender-max

> Validate material sample annotations and data structures against ontology constraints. Use when checking if CMSO annotations are correct, verifying that required properties are present, or validating that object property relationships have consistent domain and range. Catches unknown classes, unknown properties, domain mismatches, and missing required fields.

9k tokens scripts
Open Targets Search
by BioTender-max

Search Open Targets drug-disease associations with natural language queries. Target validation powered by Valyu semantic search.

2k tokens scripts
Opentrons Protocol Agent
by BioTender-max
3k tokens scripts
Organoid Drug Response Agent
by BioTender-max
1k tokens
Pan Cancer Multiomics Agent
by BioTender-max
1k tokens
Parameter Optimization
by BioTender-max

Explore and optimize simulation parameters via design of experiments (DOE), sensitivity analysis, and optimizer selection. Use for calibration, uncertainty studies, parameter sweeps, LHS sampling, Sobol analysis, surrogate modeling, or Bayesian optimization setup.

9k tokens scripts
Patents Search
by BioTender-max

Search global patents with natural language queries. Prior art, patent landscapes, and innovation tracking via Valyu.

2k tokens scripts
Patiently AI
by BioTender-max

Patiently AI simplifies medical documents for patients. Takes doctor's letters, test results, prescriptions, discharge summaries, and clinical notes and explains them in clear, personalised language. Built by PharmaTools.AI.

1k tokens
Pdx Model Analysis Agent
by BioTender-max
1k tokens
Performance Profiling
by BioTender-max

Identify computational bottlenecks, analyze scaling behavior, estimate memory requirements, and receive optimization recommendations for any computational simulation. Use when simulations are slow, investigating parallel efficiency, planning resource allocation, or seeking performance improvements through timing analysis, scaling studies, memory profiling, or bottleneck detection.

16k tokens scripts
Pharmacogenomics Agent
by BioTender-max
1k tokens
Popeve Variant Predictor Agent
by BioTender-max
2k tokens
Post Processing
by BioTender-max

Extract, analyze, and visualize simulation output data. Use for field extraction, time series analysis, line profiles, statistical summaries, derived quantity computation, result comparison to references, and automated report generation from simulation results.

32k tokens scripts

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: 11 541 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 79 870 files found on GitHub, 62 217 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 into the model's context when it is used, so its size is a running cost on every request that touches it. We measure the whole folder, not just SKILL.md: one official skill is 377 tokens, another drags 83 files of fonts behind it.
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: 7 935 skills here share a name with another skill, and two of them cannot sit side by side.