Cross-Language Coding Standards
zereight/gitlab-mcp
Shared reference for naming, function size, complexity and error handling rules that reviewer agents apply across TypeScript, Python, Go, Rust, Java, C# and Swift.
Handle errors as values using fp-ts Either and TaskEither for cleaner, more predictable TypeScript code.
Install Fp TS Errors
$ npx skills add aiskillstore/marketplace --skill fp-ts-errors -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install aiskillstore/marketplace fp-ts-errors --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/sickn33/fp-ts-errors .claude/skills/fp-ts-errors && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "fp-ts-errors" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/fp-ts-errors into .claude/skills/fp-ts-errors/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fp-ts-errors", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/fp-ts-errorsType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add aiskillstore/marketplace --skill fp-ts-errors -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install aiskillstore/marketplace fp-ts-errors --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/sickn33/fp-ts-errors .agents/skills/fp-ts-errors && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "fp-ts-errors" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/fp-ts-errors into .agents/skills/fp-ts-errors/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fp-ts-errors", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add aiskillstore/marketplace --skill fp-ts-errors -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install aiskillstore/marketplace fp-ts-errors --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/sickn33/fp-ts-errors .cursor/skills/fp-ts-errors && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "fp-ts-errors" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/fp-ts-errors into .cursor/skills/fp-ts-errors/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fp-ts-errors", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/aiskillstore/marketplace.git --path skills/sickn33/fp-ts-errors--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add aiskillstore/marketplace --skill fp-ts-errors -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install aiskillstore/marketplace fp-ts-errors --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/sickn33/fp-ts-errors .gemini/skills/fp-ts-errors && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "fp-ts-errors" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/fp-ts-errors into .gemini/skills/fp-ts-errors/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fp-ts-errors", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install aiskillstore/marketplace fp-ts-errorsInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add aiskillstore/marketplace --skill fp-ts-errors -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/sickn33/fp-ts-errors .github/skills/fp-ts-errors && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "fp-ts-errors" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/fp-ts-errors into .github/skills/fp-ts-errors/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fp-ts-errors", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add aiskillstore/marketplace --skill fp-ts-errors -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install aiskillstore/marketplace fp-ts-errors --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/sickn33/fp-ts-errors .opencode/skills/fp-ts-errors && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "fp-ts-errors" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/fp-ts-errors into .opencode/skills/fp-ts-errors/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fp-ts-errors", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
fp-ts-errors- GitHub stars
- 430
- Used in
- 5 other repos
- Token cost
- ~5.7k tokens
- SKILL.md length
- 575 words
- Files
- 2
- Skills in repo
- 1,085
- Repo updated
- First seen
- Licence
- None found
At a glance
Handle errors as values using fp-ts Either and TaskEither for cleaner, more predictable TypeScript code.
- Works in 6 steps: Stop Throwing Everywhere → The Result Pattern (Either) → Chaining Operations That Might Fail → …
- Implementing error handling patterns with fp-ts
- SKILL.md covers When to Use This Skill, 1. Stop Throwing Everywhere, 2. The Result Pattern (Either) and 3. Chaining Operations That…, plus 4 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Fp TS Errors is an agent skill from aiskillstore/marketplace. Handle errors as values using fp-ts Either and TaskEither for cleaner, more predictable TypeScript code. Use when implementing error handling patterns with fp-ts.
Its SKILL.md is about 5.7k tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `skill-report.json`).
It sits in Development, covering Error handling. It works with TypeScript. The repository describes itself as: Security-audited skills for Claude, Codex & Claude Code. One-click install, quality verified.
When your agent uses it
- Implementing error handling patterns with fp-ts
- Tasks that involve Error handling
Example prompts
- “/fp-ts-errors”
Workflow steps
6 steps, taken from the step headings in SKILL.md.
- Stop Throwing Everywhere
- The Result Pattern (Either)
- Chaining Operations That Might Fail
- Collecting Multiple Errors
- Async Operations (TaskEither)
- Converting Between Patterns
What it can do on your machine
Read from SKILL.md and the folder at commit 4ac52da. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are typescript).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Fp TS Errors loads about 5.7k tokens when it runs. Until then it costs about 44 tokens; SKILL.md has 575 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 575 words (~5,691 tokens).
“This skill teaches you how to handle errors without try/catch spaghetti. No academic jargon - just practical patterns for real problems.”
- name
- fp-ts-errors
- risk
- safe
- source
- https://github.com/whatiskadudoing/fp-ts-skills
- date_added
- 2026-02-27
Files
SKILL.md and 1 other file in skills/sickn33/fp-ts-errors of aiskillstore/marketplace.
- SKILL.md
- skill-report.json
Open the folder on GitHubat commit 4ac52da
Used in 5 other repositories
We found 14 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 5 other GitHub owners. This page covers the copy in aiskillstore/marketplace, which our catalogue first saw on October 7, 2026.
- sickn33/agentic-awesome-skillsskills/fp-ts-errorsplugins/agentic-awesome-skills/skills/fp-ts-errors+1 more
- agent-skills-hub/agent-skills-hubskills/fp-ts-errors
- lingxling/awesome-skills-cnantigravity-awesome-skills/skills/fp-ts-errorsantigravity-awesome-skills/plugins/agentic-awesome-skills/skills/fp-ts-errors+1 more
- benjaminasterA/antigravity-awesome-skillsskills/fp-ts-errors
- henryalouf/ruflow.agents/skills/fp-ts-errors.agents/skills/antigravity-awesome-skills/skills/fp-ts-errors+4 more
Compare with similar skills
Fp TS Errors next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Fp TS Errors this skillaiskillstore/marketplace | 430 | 5 repos | ~5.7k | Automated safety check: Pass | None | |
| Cross-Language Coding Standardszereight/gitlab-mcp | 2k | 1 repos | ~1.4k | Automated safety check: Pass | MIT | |
| Strict Programming Practicescode-yeongyu/oh-my-openagent | 70k | — | ~9.5k | Automated safety check: Pass | Custom licence | |
| evlog Map Rule Creatorevloghq/evlog | 1.9k | — | ~2.9k | Automated safety check: Pass | MIT | |
| Error Causes Handlingparalleldrive/aidd | 384 | — | ~1.1k | Automated safety check: Pass | MIT | |
| Convex Best Practicesjulianromli/ai-skills | 191 | — | ~2.4k | Automated safety check: Pass | None |
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Walks through adding a new rule or framework adapter to `evlog map` in @evlog/cli, from the rule source and registry to types, tests, docs and the published skill.
Error Causes Handling
paralleldrive/aidd
Has your agent throw and catch JavaScript and TypeScript errors with the error-causes library, using named causes, preserved originals and routed handlers.
Convex Best Practices
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Guidelines for building production-ready Convex apps covering function organization, query patterns, validation, TypeScript usage, error handling, and the Zen of Convex design philosophy
Typescript Best Practices
Taoidle/plan-cascade
TypeScript/Node.js best practices. An agent skill from Taoidle/plan-cascade.
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Related
Works with
Categories
Questions about Fp TS Errors
What does Fp TS Errors do?
Handle errors as values using fp-ts Either and TaskEither for cleaner, more predictable TypeScript code. Fp TS Errors is an agent skill from aiskillstore/marketplace. Handle errors as values using fp-ts Either and TaskEither for cleaner, more predictable TypeScript code.
When should I use Fp TS Errors?
Fp TS Errors fits situations like: implementing error handling patterns with fp-ts; tasks that involve Error handling.
How do I install Fp TS Errors in Claude Code?
Run `npx skills add aiskillstore/marketplace --skill fp-ts-errors -a claude-code`. Or copy the skill folder (skills/sickn33/fp-ts-errors in aiskillstore/marketplace) into .claude/skills/fp-ts-errors in your project. Claude Code loads it when a task matches its description.
How do I install Fp TS Errors in Codex?
Run `npx skills add aiskillstore/marketplace --skill fp-ts-errors -a codex`. Or copy the skill folder (skills/sickn33/fp-ts-errors in aiskillstore/marketplace) into .agents/skills/fp-ts-errors in your project. Codex loads it when a task matches its description.
Can I use Fp TS Errors in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add aiskillstore/marketplace --skill fp-ts-errors -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/fp-ts-errors, .gemini/skills/fp-ts-errors, .github/skills/fp-ts-errors and .opencode/skills/fp-ts-errors in your project.
What does Fp TS Errors need to run?
SKILL.md names no scripts, command-line tools or credentials: Fp TS Errors is instructions for the agent only.
Does Fp TS Errors access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Fp TS Errors safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Fp TS Errors use?
No licence was found for Fp TS Errors or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Fp TS Errors use?
About 5.7k tokens (SKILL.md is roughly 23k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Fp TS Errors?
Skills that share tags, products or a category with Fp TS Errors: Cross-Language Coding Standards (zereight/gitlab-mcp, 2k stars), Strict Programming Practices (code-yeongyu/oh-my-openagent, 70k stars), evlog Map Rule Creator (evloghq/evlog, 1.9k stars) and Error Causes Handling (paralleldrive/aidd, 384 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Fp TS Errors?
aiskillstore (a GitHub organization) maintains it in aiskillstore/marketplace, which has 430 GitHub stars. The repository holds 1,085 skills in this directory. The repository was last updated on October 7, 2026.
Source: aiskillstore/marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.