skillsfree
💻 Development⚙️ Backend🎨 Frontend🚀 DevOps⛓️ Web3 & Blockchain🎭 Creative📄 Documentation📊 Data & AI💼 Business🤖 Automation🔒 Security✦ Other
Free PicksPricing
⌘K
HomeFree PicksPricing
💻 Development⚙️ Backend🎨 Frontend🚀 DevOps⛓️ Web3 & Blockchain🎭 Creative📄 Documentation📊 Data & AI💼 Business🤖 Automation🔒 Security✦ Other
skillsfree

Curated platform showcasing 1500+ Claude AI Skills. Discover, learn, and enhance your productivity.

Categories

DevelopmentFrontendBackendData & AIDocumentationDevOpsAll Categories

Resources

GitHubDocumentationAPI ReferenceClaude AI

Company

About UsContactFAQ

Legal

Privacy PolicyTerms of Service

© 2026 Claude Skills Free. All rights reserved.

Made with❤for the Claude community

☀️
  1. Home
  2. ✦Backend

SCRIPT LINE

⚙️ Backend

APIs discovered by reading code, migrations held together by hope.

Contracts written first, migrations rehearsed before they run.

Reverse-engineering an endpoint 1h→Contract read in 2minA migration you pray over→Dry-run before deploy
All tags95python84documentation58database40data-analysis37authentication35git34api21security19backend18ai-ml17testing16markdown13nodejs11javascript11automation

17 skills on this line

⚙️

Anthropic Expert

Premium

Expert on Anthropic Claude API, models, prompt engineering, function calling, vision, and best practices. Triggers on anthropic, claude, api, prompt, function calling, vision, messages api, embeddings

Backend4 KB
View details
⚙️

Backend Dev Guidelines

Premium

Comprehensive backend development guide for Node.js/Express/TypeScript microservices. Use when creating routes, controllers, services, repositories, middleware, or working with Express APIs, Prisma database access, Sentry error tracking, Zod validation, unifiedConfig, dependency injection, or async patterns. Covers layered architecture (routes → controllers → services → repositories), BaseController pattern, error handling, performance monitoring, testing strategies, and migration from legacy patterns.

Backend8 KB
View details
⚙️

Biorxiv Database

Premium

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.

Backend12 KB
View details
⚙️

Clinicaltrials Database

Premium

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.

Backend15 KB
View details
⚙️

Clinpgx Database

Premium

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

Backend20 KB
View details
⚙️

Etetoolkit

Premium

Phylogenetic tree toolkit (ETE). Tree manipulation (Newick/NHX), evolutionary event detection, orthology/paralogy, NCBI taxonomy, visualization (PDF/SVG), for phylogenomics.

Backend17 KB
View details
⚙️

Feature Planning

Premium

Break down feature requests into detailed, implementable plans with clear tasks. Use when user requests a new feature, enhancement, or complex change.

Backend4 KB
View details
⚙️

Ln 114 Project Docs Creator

Premium

Creates and validates 7 project docs (requirements, architecture, tech_stack, api_spec, database_schema, design_guidelines, runbook). Fourth worker in ln-110-documents-pipeline.

Backend20 KB
View details
⚙️

Ln 116 Test Docs Creator

Premium

Creates test documentation (testing-strategy.md + tests/README.md). Establishes testing philosophy and Story-Level Test Task Pattern. Part of ln-110-documents-pipeline workflow.

Backend17 KB
View details
⚙️

Ln 220 Story Coordinator

Premium

CREATE/REPLAN Stories for Epic (5-10 Stories). Delegates ln-221-standards-researcher for standards research. Decompose-First Pattern. Auto-discovers team/Epic.

Backend19 KB
View details
⚙️

Pict Test Designer

Premium

Design comprehensive test cases using PICT (Pairwise Independent Combinatorial Testing) for any piece of requirements or code. Analyzes inputs, generates PICT models with parameters, values, and constraints for valid scenarios using pairwise testing. Outputs the PICT model, markdown table of test cases, and expected results.

Backend11 KB
View details
⚙️

Project Planner

Premium

Comprehensive project planning and documentation generator for software projects. Creates structured requirements documents, system design documents, and task breakdown plans with implementation tracking. Use when starting a new project, defining specifications, creating technical designs, or breaking down complex systems into implementable tasks. Supports user story format, acceptance criteria, component design, API specifications, and hierarchical task decomposition with requirement traceability.

Backend24 KB
View details
⚙️

Prompt Engineering

Premium

Use this skill when you writing commands, hooks, skills for Agent, or prompts for sub agents or any other LLM interaction, including optimizing prompts, improving LLM outputs, or designing production prompt templates.

Backend17 KB
View details
⚙️

Qiskit

Premium

Comprehensive quantum computing toolkit for building, optimizing, and executing quantum circuits. Use when working with quantum algorithms, simulations, or quantum hardware including (1) Building quantum circuits with gates and measurements, (2) Running quantum algorithms (VQE, QAOA, Grover), (3) Transpiling/optimizing circuits for hardware, (4) Executing on IBM Quantum or other providers, (5) Quantum chemistry and materials science, (6) Quantum machine learning, (7) Visualizing circuits and results, or (8) Any quantum computing development task.

Backend9 KB
View details
⚙️

Shopify

Premium

Build Shopify applications, extensions, and themes using GraphQL/REST APIs, Shopify CLI, Polaris UI components, and Liquid templating. Capabilities include app development with OAuth authentication, checkout UI extensions for customizing checkout flow, admin UI extensions for dashboard integration, POS extensions for retail, theme development with Liquid, webhook management, billing API integration, product/order/customer management. Use when building Shopify apps, implementing checkout customizations, creating admin interfaces, developing themes, integrating payment processing, managing store data via APIs, or extending Shopify functionality.

Backend8 KB
View details
⚙️

String Database

Premium

Query STRING API for protein-protein interactions (59M proteins, 20B interactions). Network analysis, GO/KEGG enrichment, interaction discovery, 5000+ species, for systems biology.

Backend18 KB
View details
⚙️

Tech Stack Evaluator

Premium

Comprehensive technology stack evaluation and comparison tool with TCO analysis, security assessment, and intelligent recommendations for engineering teams

Backend15 KB
View details

Page 1 / 1 · showing 17 of 17

PreviousNext