Total 50,540 skills, Backend Development has 4137 skills
Showing 12 of 4137 skills
Utilizes NBitcoin for HD wallet operations (BIP32/39/44). Use when: Creating wallets, deriving keys from mnemonics, working with BIP44 derivation paths, or implementing hierarchical deterministic wallet features.
Master FastAPI dependency injection for building modular, testable APIs. Use when creating reusable dependencies and services.
Use when working with Ruby metaprogramming features including dynamic method definition, method_missing, class_eval, define_method, and reflection.
Stripe webhook health diagnostics. Invoke for: webhook delivery failures, pending_webhooks issues, redirect problems (307/308), subscription sync failures, pre-deployment webhook verification, incident investigation involving Stripe.
Use when designing new REST APIs, reviewing API designs, establishing API standards, designing request/response formats, pagination, versioning, authentication flows, or creating OpenAPI specifications.
Enterprise-grade NestJS development guidance for building modular, testable Node.js backends with TypeScript. Covers module design, dependency injection, validation, security, performance, and deployment.
Use when implementing Stripe webhook endpoints and getting 'Raw body not available' or signature verification errors - provides raw body parsing solutions and subscription period field fixes across frameworks
Error handling patterns for ERPNext/Frappe database operations. Use when handling DoesNotExistError, DuplicateEntryError, transaction failures, and query errors. Covers retry patterns and data integrity. V14/V15/V16 compatible. Triggers: database error, DoesNotExistError, DuplicateEntryError, transaction failed, query error.
Error handling patterns for ERPNext Server Scripts. Use when handling sandbox errors, frappe.throw usage, validation in server scripts, and debugging. V14/V15/V16 compatible. Triggers: server script error, frappe.throw, sandbox error, validation error, debugging server script.
Implement enterprise Single Sign-On (SSO) authentication supporting multiple identity providers with JWT RS256 tokens, backwards verification, session management, and cross-system permission mapping. Use this skill when building authentication systems that integrate with multiple enterprise SSO providers or when implementing secure token validation with session verification.
Design taxonomy structure for categories, tags, or hierarchical classification. Supports flat, hierarchical, and faceted patterns.
Creates MCP tools for Prowler MCP Server. Covers BaseTool pattern, model design, and API client usage. Trigger: When working in mcp_server/ on tools (BaseTool), models (MinimalSerializerMixin/from_api_response), or API client patterns.