Agent skill · software engineering · sickn33
fp-backend
Functional programming patterns for Node.js/Deno backend development using fp-ts, ReaderTaskEither, and functional dependency injection
Why this skill is useful
Provides specific functional programming patterns and practices for backend development using fp-ts that the AI wouldn't reliably generate on its own.
What it needs
Requires deno, node installed locally. About 1k tokens when loaded. Last updated 2026-08-07. 44,571 stars on the source repository.
What this skill does
fp-ts Backend Patterns Functional programming patterns for building type-safe, testable backend services using fp-ts. Detailed Guide Read the detailed guide before executing this skill. It retains the complete procedure and reference material. Treat its safety, prerequisites, and validation requirements as mandatory. For focused work, load the relevant sections; for end-to-end work, read the guide completely. When to Use You are building or refactoring a Node.js or Deno backend with fp-ts. The task involves dependency injection, service composition, or typed backend errors with ReaderTaskEither. You need functional backend architecture patterns rather than isolated utility snippets. Limitations Use this skill only when the task clearly matches the scope described above. Do not treat the output as a substitute for environment-specific validation, testing, or expert review. Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills sickn33/fp-backend--577776