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loom-concurrency

Comprehensive concurrency and parallelism patterns for multi-threaded and async programming. Use when implementing async/await, parallel processing, thread safety, worker pools, or debugging race conditions and deadlocks. Triggers: async, await, thread, mutex, lock, semaphore, channel, actor, parallel, concurrent, race condition, deadlock, livelock, atomic, futures, promises, tokio, asyncio, goroutine, spawn, Arc, Mutex, RwLock, mpsc, select, join, worker pool, queue, synchronization, critical section, context switch.

cosmix
cosmix
361

loom-code-review

Performs comprehensive code reviews focusing on correctness, maintainability, performance, security, and best practices. Trigger keywords: review, code review, PR review, pull request, check code, audit code, feedback, approve, request changes, comment, suggestion, LGTM, nit, blocker, code quality, best practice, architecture review, design review, security review, infra review.

cosmix
cosmix
361

loom-code-migration

Strategies and patterns for safe code migrations and upgrades. Use when upgrading frameworks, migrating between technologies, handling deprecations, or planning incremental migrations. Triggers: migration, migrate, upgrade, version upgrade, breaking change, deprecation, codemod, codemods, AST transformation, jscodeshift, ts-morph, framework migration, database migration, schema migration, legacy code, modernize, modernization, refactoring, feature flags, rollback, strangler fig, blue-green deployment, canary release, shadow mode, parallel run.

cosmix
cosmix
361

loom-ci-cd

Designs and implements CI/CD pipelines for automated testing, building, deployment, and security scanning across multiple platforms. Covers pipeline optimization, test integration, artifact management, and release automation.

cosmix
cosmix
361

loom-caching

Comprehensive caching strategies and patterns for performance optimization. Use when implementing cache layers, cache invalidation, TTL policies, or distributed caching. Covers Redis/Memcached patterns, CDN caching, database query caching, ML model caching, and eviction policies. Triggers: cache, caching, Redis, Memcached, CDN, TTL, invalidation, eviction, LRU, LFU, FIFO, write-through, write-behind, cache-aside, read-through, cache stampede, distributed cache, local cache, memoization, query cache, result cache, edge cache, browser cache, HTTP cache.

cosmix
cosmix
361

loom-before-after

Generates before/after verification pairs for loom plans. Proves a stage actually changed system behavior by capturing state before and after implementation. Use for delta-proof verification — proving new commands, endpoints, modules, or bug fixes work by comparing system state.

cosmix
cosmix
361

loom-background-jobs

Background job processing patterns including job queues, scheduled jobs, worker pools, and retry strategies. Use when implementing async processing, job queues, workers, task queues, async tasks, delayed jobs, recurring jobs, scheduled tasks, ETL pipelines, data processing, ML training jobs, Celery, Bull, Sidekiq, Resque, cron jobs, retry logic, dead letter queues, DLQ, at-least-once delivery, exactly-once delivery, job monitoring, or worker management.

cosmix
cosmix
361

loom-auth

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cosmix
cosmix
361

loom-rate-limiting

API rate limiting and quota management implementation. Use when implementing request throttling, API quotas, backpressure handling, or protection against abuse. Keywords: rate limiting, rate limit, throttle, throttling, token bucket, leaky bucket, sliding window, fixed window, quota, 429, too many requests, DDoS, abuse prevention, API quota, burst, Redis rate limiting, distributed rate limiting, API gateway, per-user limits, per-IP limits, concurrent requests, request limiting.

cosmix
cosmix
361

loom-refactoring

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cosmix
cosmix
361

loom-rust

Rust language expertise for writing safe, performant, production-quality Rust code. Primary language for the Loom project. Use for Rust development, ownership patterns, error handling, async/await, cargo management, CLI tools, and serialization. Triggers: rust, cargo, rustc, ownership, borrowing, lifetime, trait, impl, struct, enum, Result, Option, async, await, tokio, serde, clap, thiserror, anyhow, Arc, Mutex, RwLock, RefCell, Box, Rc, Vec, HashMap, HashSet, String, derive, macro.

cosmix
cosmix
361

loom-serialization

Data serialization and deserialization patterns across formats. Use when implementing data exchange, API payloads, storage formats, encoding/decoding, or cross-language communication. Keywords: serialize, deserialize, serialization, deserialization, JSON, YAML, TOML, XML, Protocol Buffers, protobuf, MessagePack, CBOR, serde, encoding, decoding, schema, schema evolution, versioning, backward compatibility, forward compatibility, binary format, text format, data interchange, gRPC, API contracts.

cosmix
cosmix
361

loom-security-scan

Quick routine security checks for secrets, dependencies, container images, and common vulnerabilities. Run frequently during development. Triggers: security scan, SAST, DAST, vulnerability scan, dependency scan, container scan, secret scan, credential scan, quick scan, secrets check, vulnerability check, security check, pre-commit security, routine security, Snyk, Trivy, Semgrep, CodeQL, Bandit, safety, npm audit, cargo audit, gitleaks, trufflehog, govulncheck, pip-audit.

cosmix
cosmix
361

loom-security-audit

Performs comprehensive security audits identifying vulnerabilities, misconfigurations, and security best practice violations across applications, APIs, infrastructure, and data pipelines. Covers OWASP Top 10, compliance requirements (SOC2, PCI-DSS, HIPAA, GDPR), penetration testing, vulnerability assessment, risk assessment, security reviews, and hardening. Trigger keywords: security audit, vulnerability assessment, penetration test, pentest, OWASP, CVE, security review, risk assessment, compliance, SOC2, PCI-DSS, HIPAA, GDPR, security checklist, threat modeling, attack surface, security posture, vulnerability scan, security hardening, security baseline, security controls, security gap analysis, infrastructure security, API security, cloud security, container security, Kubernetes security, network security, application security, data security, ML model security.

cosmix
cosmix
361

loom-search

Full-text search and search engine implementation. Use when implementing search functionality, autocomplete, faceted search, relevance tuning, or working with search indexes. Keywords: search, full-text search, Elasticsearch, OpenSearch, Meilisearch, Typesense, fuzzy search, autocomplete, faceted search, facets, inverted index, relevance, ranking, scoring, tokenizer, analyzer, search-as-you-type, aggregations, synonyms, indexing, query, filtering, highlighting, search UI, typeahead, suggestions.

cosmix
cosmix
361

loom-istio

Service mesh implementation with Istio for microservices traffic management, security, and observability. Use when implementing service mesh, mTLS, traffic routing, load balancing, circuit breakers, retries, timeouts, canary deployments, A/B testing, or service-to-service communication. Triggers: istio, service mesh, envoy, sidecar, virtualservice, destinationrule, gateway, mtls, peerauthentication, authorizationpolicy, serviceentry, traffic management, traffic splitting, canary, blue-green, circuit breaker, retry, timeout, load balancing, ingress, egress, observability, tracing, telemetry.

cosmix
cosmix
361

loom-karpenter

Kubernetes node autoscaling and cost optimization with Karpenter. Use when implementing node provisioning, spot instance management, cluster right-sizing, node consolidation, or reducing compute costs. Covers NodePool configuration, EC2NodeClass setup, disruption budgets, spot/on-demand mix strategies, multi-architecture support, and capacity-type selection.

cosmix
cosmix
361

loom-kubernetes

Kubernetes deployment, cluster architecture, security, and operations. Includes manifests, Helm charts, RBAC, network policies, troubleshooting, and production best practices. Trigger keywords: kubernetes, k8s, pod, deployment, statefulset, daemonset, service, ingress, configmap, secret, pvc, namespace, helm, chart, kubectl, cluster, rbac, networkpolicy, podsecurity, operator, crd, job, cronjob, hpa, pdb, kustomize.

cosmix
cosmix
361

loom-kustomize

Kubernetes native configuration management with Kustomize. Use for environment-specific configs, resource patching, manifest organization, multi-environment deployments, and GitOps workflows. Triggers: kustomize, kustomization, overlay, base, patch, strategic merge, json patch, json6902, configmap generator, secret generator, namespace, namePrefix, nameSuffix, commonLabels, commonAnnotations, component, transformer, replacement, multi-environment, dev/staging/prod configs, k8s manifest management.

cosmix
cosmix
361

loom-logging-observability

Comprehensive logging and observability patterns for production systems including structured logging, distributed tracing, metrics collection, log aggregation, and alerting. Triggers for this skill - log, logging, logs, trace, tracing, traces, metrics, observability, OpenTelemetry, OTEL, Jaeger, Zipkin, structured logging, log level, debug, info, warn, error, fatal, correlation ID, span, spans, ELK, Elasticsearch, Loki, Datadog, Prometheus, Grafana, distributed tracing, log aggregation, alerting, monitoring, JSON logs, telemetry.

cosmix
cosmix
361

loom-md-tables

Fix markdown table alignment and spacing issues. Use when formatting tables in markdown files, aligning columns, normalizing cell padding, or ensuring proper table structure. Triggers: markdown table, md table, table formatting, column alignment, pipe table, GFM table, table generator, align columns, table spacing, table layout, fix table, format table, table structure.

cosmix
cosmix
361

loom-model-evaluation

Evaluates machine learning models for performance, fairness, and reliability using appropriate metrics and validation techniques. Covers training debugging, hyperparameter tuning, and production monitoring. Trigger keywords: model evaluation, metrics, accuracy, precision, recall, F1, F1-score, ROC, AUC, ROC-AUC, confusion matrix, cross-validation, k-fold, stratified, overfitting, underfitting, bias, variance, bias-variance tradeoff, hyperparameter, hyperparameter tuning, loss, loss function, metric, benchmark, benchmarking, model performance, classification metrics, regression metrics, RMSE, MSE, MAE, MAPE, R2, R-squared, train-test split, validation set, test set, hold-out, learning curve, validation curve, model selection, error analysis, residual analysis, ML testing, training issues, convergence, gradient, vanishing gradient, exploding gradient, training instability, LLM evaluation, language model evaluation, prompt engineering evaluation, A/B testing, champion-challenger, model monitoring, model drift, data drift, concept drift, model decay.

cosmix
cosmix
361

loom-performance-testing

Performance testing and load testing expertise including k6, locust, JMeter, Gatling, artillery, API load testing, database query optimization, benchmarking strategies, profiling techniques, metrics analysis (p95/p99 latency, throughput, RPS), performance budgets, and bottleneck identification. Use when implementing load tests, stress tests, spike tests, soak tests, analyzing system behavior under concurrent users, measuring saturation points, or optimizing application performance under load. Trigger keywords: performance testing, load testing, stress testing, stress test, load test, performance test, k6, locust, JMeter, Gatling, artillery, benchmark, benchmarking, profiling, latency, throughput, RPS, requests per second, concurrent users, virtual users, percentile, p95, p99, p50, median latency, saturation, bottleneck, performance budget, API load testing, database performance, query optimization, slow queries, scalability testing, capacity planning, response time, error rate, apdex.

cosmix
cosmix
361

loom-plan-writer

REQUIRED skill for creating Loom execution plans. Designs DAG-based plans with mandatory knowledge-bootstrap and integration-verify bookends, parallel subagent execution within stages, and concurrent worktree stages for maximum throughput. Trigger keywords: loom, plan, stage, worktree, orchestration, parallel execution, parallel stages, concurrent execution, knowledge-bootstrap, integration-verify, acceptance criteria, signal, handoff, execution graph, dag, dependencies, loom plan, create plan, write plan, execution plan, orchestration plan, stage dependencies, parallel subagents, functional verification, wiring verification, smoke test.

cosmix
cosmix
361

loom-prometheus

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cosmix
cosmix
361

loom-prompt-engineering

Designs and optimizes prompts for large language models including system prompts, agent signals, and few-shot examples. Covers instruction design, prompt security, chain-of-thought reasoning, and in-context learning for orchestrated AI agents. Trigger keywords: prompt, LLM, GPT, Claude, AI, system prompt, user prompt, few-shot, chain of thought, CoT, in-context learning, prompt template, prompt injection, jailbreak prevention, agent signal, agent instruction, agent orchestration, reasoning, instruction tuning.

cosmix
cosmix
361

loom-python

Python language expertise for writing idiomatic, production-quality Python code. Covers web frameworks (FastAPI, Django, Flask), data processing (pandas, numpy, dask), ML patterns (sklearn, pytorch), async programming, type hints, testing with pytest, packaging (pip, uv, poetry), linting (ruff, mypy, black), and PEP 8 standards. Use for any Python development including data engineering and machine learning workflows. Triggers: python, py, pip, uv, poetry, virtualenv, pytest, pydantic, fastapi, django, flask, pandas, numpy, dataclass, type hints, asyncio, mypy, ruff, black, sklearn, pytorch, tensorflow, jupyter, pipenv, conda.

cosmix
cosmix
361

loom-react

Modern React development patterns including components, hooks, state management, routing, forms, and UI architecture. Covers React 19+, React Router v7, Jotai atoms, server components, accessibility, performance optimization, and testing. Use for building React applications with client-side routing, global state, component composition, and async data loading. Triggers: react, jsx, tsx, component, hook, useState, useEffect, useContext, useReducer, useMemo, useCallback, useRef, props, state, render, virtual DOM, reconciliation, single page application, spa, react-router, jotai, vite, bun, Next.js, Remix, client-side routing, server components, accessibility, a11y, ARIA, performance, code splitting, lazy loading, Suspense, error boundaries, form validation, UI components, design system, composition patterns.

cosmix
cosmix
361

ddev-expert

DDEV local development expertise. Use when working with DDEV projects, containers, configuration, or troubleshooting DDEV environments.

madsnorgaard
madsnorgaard
362

drupal-security

Drupal security expertise. Auto-activates when writing forms, controllers, queries, or handling user input. Prevents XSS, SQL injection, and access bypass vulnerabilities.

madsnorgaard
madsnorgaard
362

drupal-migration

Drupal migration expertise. Use when working with D7-to-D10 migrations, CSV imports, JSON API imports, or custom migration plugins.

madsnorgaard
madsnorgaard
362

drupal-expert

Drupal 10/11 development expertise. Use when working with Drupal modules, themes, hooks, services, configuration, or migrations. Triggers on mentions of Drupal, Drush, Twig, modules, themes, or Drupal API.

madsnorgaard
madsnorgaard
362

docker-local

Custom Docker Compose local development patterns. Use when working with Docker-based local environments, container configuration, or troubleshooting Docker setups.

madsnorgaard
madsnorgaard
362

papi

This skill should be used when the user wants to interact with their paper database — listing papers, searching content, showing paper details, adding papers, or exporting context. Matches queries like "search papers for X", "add this arXiv paper", "show equations from paper Y", "what papers do I have". Prefer CLI over MCP RAG tools for direct lookups.

hummat
hummat
351

papi-curate

Create project notes from papers. Use when user wants to document paper findings, create implementation notes, or summarize papers for a project.

hummat
hummat
351

papi-ground

Ground responses in paper excerpts with citations. Use when user wants cited claims, quotes, or needs to avoid hallucination about paper content.

hummat
hummat
351

papi-init

Setup paperpipe agent integration. Use when user wants to add papi to a project's CLAUDE.md/AGENTS.md or initialize paper support.

hummat
hummat
351

papi-verify

Verify code against paper. Use when user asks "does this match the paper", "check my implementation", or is implementing equations/algorithms from literature.

hummat
hummat
351

papi-ask

Query papers using RAG (PaperQA2 or LEANN). Use when user needs synthesized answers from papers, asks "what does paper X say about Y", or needs cited responses.

hummat
hummat
351

papi-compare

Compare papers for a decision. Use when user asks "which paper should I use", "compare approaches", or needs to choose between methods/algorithms.

hummat
hummat
351

outlook-automation

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gmickel
gmickel
355

writing-rust

Idiomatic Rust development. Use when writing Rust code, Cargo crates/workspaces,

alexei-led
alexei-led
355

writing-typescript

Idiomatic TypeScript development. Use when writing TypeScript code, Node.js

alexei-led
alexei-led
355

writing-python

Idiomatic Python 3.12+ development. Use when writing Python code, CLI

alexei-led
alexei-led
355

writing-web

Simple web development with HTML, CSS, JS, and HTMX. Use when working

alexei-led
alexei-led
355

writing-shell

Idiomatic shell development for POSIX sh, Bash, Zsh, Fish, hooks, CI

alexei-led
alexei-led
355

brainstorming-ideas

Brainstorm ideas and stress-test draft plans before coding. Use when

alexei-led
alexei-led
355

writing-csharp

Idiomatic C# /.NET development. Use when writing C# code, changing `.csproj`

alexei-led
alexei-led
355

writing-java-kotlin

Idiomatic modern Java and Kotlin JVM development. Use when writing `.java`,

alexei-led
alexei-led
355

researching-web

Web research via platform web tools. Use for technical comparisons, current-state

alexei-led
alexei-led
355

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Adoption

Agent Skills are supported by leading AI development tools.

FAQ

Frequently asked questions about Agent Skills.

01

What are Agent Skills?

Agent Skills are reusable, production-ready capability packs for AI agents. Each skill lives in its own folder and is described by a SKILL.md file with metadata and instructions.

02

What does this agent-skills.md site do?

Agent Skills is a curated directory that indexes skill repositories and lets you browse, preview, and download skills in a consistent format.

03

Where are skills stored in a repo?

By default, the site scans the skills/ folder. You can also submit a URL that points directly to a specific skills folder.

04

What is required inside SKILL.md?

SKILL.md must include YAML frontmatter with at least name and description. The body contains the actual guidance and steps for the agent.

05

How can I submit a repo?

Click Submit in the header and paste a GitHub URL that points to a skills folder. We’ll parse it and add any valid skills to the directory.