fp-errors
Lets your agent treat errors as data. It helps write more predictable and understandable code, without using 'try/catch'.
What it does
This skill teaches how to handle errors in an organized way in programming. Instead of 'throwing' errors everywhere, you learn to treat them as information that the program can understand and manage.
When to use it
- ✓When your code has too many 'try/catch' blocks and becomes confusing.
- ✓When building systems where it's important to know exactly what error occurred.
- ✓To make error handling more predictable and easier to follow.
Example of what to ask your AI
“How can I use 'Either' and 'TaskEither' to manage errors in my code instead of using 'try/catch'?”
Want more? Open the sections below.
How to use
The easiest way: copy the message below and paste it into Claude, ChatGPT, Cursor or any AI. It reads the skill and follows the instructions.
Skill link
Ready-to-paste message
How it works
The main idea is to treat errors as data. Instead of the program stopping abruptly, it returns the error as a value, allowing the code that called the function to know what happened and react appropriately.
Installation
Easiest way: copy the skill link and paste it into Claude, ChatGPT or Cursor asking it to follow the instructions.
In the terminal (Claude Code, Codex, Cursor), in your project folder:
npx skills add sickn33/agentic-awesome-skills --skill fp-errorsOr download just the file:
curl -L https://raw.githubusercontent.com/sickn33/agentic-awesome-skills/main/plugins/agentic-awesome-skills-claude/skills/fp-errors/SKILL.md -o SKILL.mdTechnical content (original SKILL.md)
Original text by the author, straight from GitHub.
Practical Error Handling with fp-ts
This skill teaches you how to handle errors without try/catch spaghetti. No academic jargon - just practical patterns for real problems.
The core idea: Errors are just data. Instead of throwing them into the void and hoping someone catches them, return them as values that TypeScript can track.
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 need to replace exception-heavy code with
EitherorTaskEither. - The task involves validation, domain errors, or clearer error contracts in TypeScript.
- You want pragmatic fp-ts error-handling guidance for real application code.
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.
FAQ
What are 'Either' and 'TaskEither'?
They are tools (data types) that help organize code, allowing a function to return both a successful result and an error, in a clear and controlled manner.
Why is it better than 'try/catch'?
'Try/catch' can scatter error handling throughout the code, making it difficult to read and predict. Using 'Either' and 'TaskEither' centralizes and makes explicit how errors are handled.
Does this work for any type of error?
It's especially useful for errors that you can anticipate and that are part of your program's normal logic, such as validations or expected communication failures.
Details
Original description by the author
Stop throwing everywhere - handle errors as values using Either and TaskEither for cleaner, more predictable code
Popularity
- GitHub stars
- 48k
- Ranking position
- #3028
- License
- MIT
- Updated
- 10/15/2026
Comments
- …
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