New: 97,000+ skills indexed from GitHub repos with 100+ stars · every skill safety-checkedBrowse top skillsTop skills
Esc to closeBrowse all skills
Submit a skillBrowse skills
Submit a skillBrowse skills

Agent skill

Errors Slips

by hashgraph-online in hashgraph-online/awesome-codex-plugins

A skill your agent uses when designing to prevent or recover from execution errors — actions that don't match the user's intent.

Apache-2.0Auto-check passed

Install Errors Slips

skills CLI
$ npx skills add hashgraph-online/awesome-codex-plugins --skill errors-slips -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install hashgraph-online/awesome-codex-plugins errors-slips --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/HDeibler/universal-design-principles/plugins/interaction-and-control-principles/skills/errors-slips .claude/skills/errors-slips && rm -rf skills-src

Use ~/.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/

Facts

Skill name
errors-slips
GitHub stars
1.2k
Token cost
~1.3k tokens
SKILL.md length
568 words
Files
2 (incl. references)
Skills in repo
736
Repo updated
First seen
Licence
Apache-2.0

At a glance

A skill your agent uses when designing to prevent or recover from execution errors — actions that don't match the user's intent.

  • Works in 3 steps: The "what slip is most likely here?"… → The post-incident slip diagnosis. When… → The undo-coverage check. What percentage…
  • Designing to prevent
  • SKILL.md covers The two slip subtypes (from…, Common slip-prevention patterns, Slip-prone contexts and Anti-patterns, plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Errors Slips is an agent skill from hashgraph-online/awesome-codex-plugins. Use this skill when designing to prevent or recover from execution errors — actions that don't match the user's intent. Trigger when designing critical action confirmations, distinct affordances for similar-purpose elements, recovery from wrong-button presses, "I didn't mean to do that" flows. Sub-aspect of errors; read that first.

Its SKILL.md is about 1.3k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/slip-prevention-patterns.md`).

The repository describes itself as: A curated list of awesome OpenAI Codex / ChatGPT plugins, skills, and resources. The 1 Codex Marketplace. See live plugins at: https://hol.org/plugins/best-codex-plugins. The licence is Apache-2.0.

When your agent uses it

  • Designing to prevent
  • Recover from execution errors — actions that dont match the users intent
  • Designing critical action confirmations
  • Distinct affordances for similar-purpose elements

Example prompts

  • “t match the user”
  • “I didn”
  • “/errors-slips”

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

  1. The "what slip is most likely here?" audit. For each high-frequency action, name the slip that would happen and design against it.
  2. The post-incident slip diagnosis. When users report mistakes, distinguish slips from mistakes. Different fixes.
  3. The undo-coverage check. What percentage of routine destructive actions have undo? If less than 90%, you have slip exposure.

What it can do on your machine

Read from SKILL.md and the folder at commit 16b4156. 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 html and javascript).

    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

Errors Slips loads about 1.3k tokens when it runs, and up to ~2k if it reads all its reference files. Until then it costs about 87 tokens; SKILL.md has 568 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~87
When it runs · the whole SKILL.md, loaded when a task matches
~1.3k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~2k

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

The full file from hashgraph-online/awesome-codex-plugins at commit 16b4156, republished under its Apache-2.0 licence (© hashgraph-online). 568 words, ~1,315 tokens.

Download SKILL.mdSave it as .claude/skills/errors-slips/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
errors-slips
description
Use this skill when designing to prevent or recover from execution errors — actions that don't match the user's intent. Trigger when designing critical action confirmations, distinct affordances for similar-purpose elements, recovery from wrong-button presses, "I didn't mean to do that" flows. Sub-aspect of `errors`; read that first.

Slips: errors of execution

A slip happens when the user knew what they wanted to do but their action didn't match. The intent was right; the execution was wrong. Slips are common in routine tasks where conscious attention has lapsed: the user types "definately" instead of "definitely," clicks Reply when they meant Reply All, deletes the file they meant to keep.

The design responses for slips don't increase the user's knowledge — the user already knew what to do. They make wrong actions structurally harder, give clear feedback when they happen, and provide easy recovery.

The two slip subtypes (from the book)

Action slips

Wrong action despite correct intent. Triggered by:

  • Routine tasks performed automatically.
  • Distractions or interruptions.
  • Similar-looking controls.
  • Auto-pilot button-pressing on confirmations.

Design responses:

  • Distinctive affordances — make destructive actions visibly different from common ones (color, position, shape).
  • Defensible space — separate destructive controls from frequent ones (the "Cancel" near "Save" and "Delete" elsewhere).
  • Confirmation for critical tasks — explicit confirmation step (sparingly).
  • Constraints — make wrong actions impossible (can't submit a form with required fields empty).
  • Mappings — controls match the layout of what they affect (stovetop knobs match burner positions).
Attention slips

Steps missed during a procedure. Triggered by:

  • Interruptions (a phone call mid-procedure).
  • Long task sequences.
  • Resuming a paused task.

Design responses:

  • Status cues that survive interruption ("You're on Step 3 of 5").
  • Orientation aids when resuming.
  • Alarms or alerts for critical steps.
  • Highlighting to focus attention on the current step.

Common slip-prevention patterns

Distinct destructive button styling

The destructive button differs from the safe button by color (typically red), position (typically right of the safe button in modal footers), and label (specific verb: "Delete" not "OK"). This triple-difference makes the slip harder.

html
<div class="dialog-actions">
  <button>Cancel</button>
  <button class="destructive">Delete project</button>
</div>
Type-to-confirm for irreversible actions

The user must type the resource name to enable the destructive button. Breaks autopilot Enter-pressing.

html
<p>To confirm, type <strong>Acme Inc</strong>:</p>
<input id="confirm" />
<button id="delete-btn" disabled>Delete Acme Inc</button>
Undo for routine destructive actions

Most slips are caught immediately. A 5–10 second undo window covers them.

js
async function archive(item) {
  const previous = items.slice();
  items = items.filter(i => i.id !== item.id);
  render();
  showToast('Archived', { undo: () => { items = previous; render(); } });
}
Forgot-attachment detection

Email clients scan body text for "attached," "attachment," etc. If found and no attachment exists, prompt before sending.

Show full SKILL.md (230 more words)Show less
Step indicators in multi-step procedures

A visible stepper or progress indicator survives interruptions. Returning users see "you were on Step 3."

Read-only by default for sensitive views

Power-user surfaces (admin panels) start in read-only and require explicit "Edit mode" to change values. Reduces accidental edits.

Slip-prone contexts

Some contexts produce more slips than others:

  • Routine tasks done many times — automatic execution is more likely to slip.
  • Interrupted tasks — resuming at the wrong step.
  • Similar-control clusters — adjacent buttons with similar appearance.
  • Time pressure — fast typing, fast clicking.
  • Modal dialogs users dismiss on autopilot.

Audit slip-prone contexts in your product; apply prevention.

Anti-patterns

  • Identical-looking destructive and safe buttons. Slips are inevitable.
  • Pre-selected destructive option. Default Enter triggers destruction.
  • No undo for routine destructive actions. Each slip is permanent.
  • Excessive confirmations for non-destructive actions. Confirmation fatigue; users dismiss real ones too.

Heuristics

  1. The "what slip is most likely here?" audit. For each high-frequency action, name the slip that would happen and design against it.
  2. The post-incident slip diagnosis. When users report mistakes, distinguish slips from mistakes. Different fixes.
  3. The undo-coverage check. What percentage of routine destructive actions have undo? If less than 90%, you have slip exposure.
  • errors (parent).
  • errors-mistakes — the other half; intentional errors driven by wrong models.
  • forgiveness — recovery from slips after they happen.
  • affordance — distinct affordances prevent slip-type wrong-clicks.
  • constraint — structural prevention of wrong actions.

© hashgraph-online, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file (references) in plugins/HDeibler/universal-design-principles/plugins/interaction-and-control-principles/skills/errors-slips of hashgraph-online/awesome-codex-plugins.

  • SKILL.md
  • references/slip-prevention-patterns.md

Open the folder on GitHubat commit 16b4156

Compare with similar skills

Errors Slips 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.

Errors Slips compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Errors Slips this skillhashgraph-online/awesome-codex-plugins1.2k—~1.3kAutomated safety check: PassApache-2.0
Design Systemaffaan-m/ECC274k—~698Automated safety check: PassMIT
Design Guidepaperclipai/paperclip98k1 repos~3.1kAutomated safety check: PassMIT
Design Audit Against Rams' Principlesthedotmack/claude-mem97k—~4.6kAutomated safety check: PassApache-2.0
Figma Design to Codewarpdotdev/warp65k4 repos~2.9kAutomated safety check: PassAGPL-3.0
Design Consultationgarrytan/gstack136k—~15kAutomated safety check: NotesMIT

Similar skills

  • Design System

    affaan-m/ECC

    Generate a design system from an existing codebase or audit one for visual consistency: extract tokens (colors, typography, spacing, shadows) into design-tokens.json and CSS custom properties with…

    274k GitHub stars~698 tokensUpdated 2 days ago
    Frontend & DesignAuto-check passed

  • Design Guide

    paperclipai/paperclip

    Paperclip UI design system guide for building consistent, reusable frontend components.

    98k GitHub starsUsed in 1 repo~3.1k tokens
    Frontend & DesignAuto-check passed

  • Design Audit Against Rams' Principles

    thedotmack/claude-mem

    Audits a design against Dieter Rams' ten principles of good design, scores each with evidence, and hands off a make-plan prompt for a new, refined or redesigned outcome.

    97k GitHub stars~4.6k tokensUpdated yesterday
    Frontend & DesignAuto-check passed

  • Figma Design to Code

    warpdotdev/warp

    Turns a Figma frame or component into production code that matches the design, using the Figma MCP server and the project's own design system.

    65k GitHub starsUsed in 4 repos~2.9k tokens
    Frontend & DesignAuto-check passed

  • Design Consultation

    garrytan/gstack

    Learns about your product, studies the landscape and writes a DESIGN.md with a full design system covering type, color, layout, spacing and motion.

    136k GitHub stars~15k tokensUpdated yesterday
    Frontend & DesignAuto-check: notes

  • Product Design Workflow Bundle

    XiaomiMiMo/MiMo-Code

    Entry point to a bundle of product design workflows covering context, research, audits, ideation, URL or image to code, design QA and sharing a prototype.

    14k GitHub stars~721 tokensUpdated 4 days ago
    Frontend & DesignAuto-check passed

More from hashgraph-online/awesome-codex-plugins

All 736 skills in this repo

  • Anime Reaction Gif

    hashgraph-online/awesome-codex-plugins

    Create original anime-style reaction stickers as looping GIFs and MP4 previews, using generated character pose sheets and timed key poses.

    1.2k GitHub stars~922 tokensUpdated yesterday
    Auto-check passed

  • Calibredb

    hashgraph-online/awesome-codex-plugins

    Manage and query Calibre libraries with the calibredb CLI (local paths or Calibre Content server URLs).

    1.2k GitHub stars~1k tokensUpdated yesterday
    Auto-check passed

  • Rust API Test Harness

    hashgraph-online/awesome-codex-plugins

    A skill your agent uses when adding, changing, testing, or debugging Rust HTTP APIs and services, especially when Codex needs black-box integration tests, random-port app startup, real database test…

    1.2k GitHub stars~1.7k tokensUpdated yesterday
    Auto-check passed

  • Art

    hashgraph-online/awesome-codex-plugins

    Make a studio's game look like something at build time — a cover from a real frame of the game (free), painted covers, backdrops, textures and character plates from image models through the…

    1.2k GitHub stars~2.4k tokensUpdated yesterday
    Auto-check passed

  • Calle

    hashgraph-online/awesome-codex-plugins

    Use CALL-E from Codex through the calle CLI. An agent skill from hashgraph-online/awesome-codex-plugins.

    1.2k GitHub stars~2.9k tokensUpdated yesterday
    Auto-check passed

  • Game Balance Economy

    hashgraph-online/awesome-codex-plugins

    Balance game difficulty, resources, rewards, probability, progression, economies, and dominant strategies.

    1.2k GitHub stars~618 tokensUpdated yesterday
    Auto-check passed

Questions about Errors Slips

What does Errors Slips do?

A skill your agent uses when designing to prevent or recover from execution errors — actions that don't match the user's intent. Errors Slips is an agent skill from hashgraph-online/awesome-codex-plugins. Use this skill when designing to prevent or recover from execution errors — actions that don't match the user's intent.

When should I use Errors Slips?

Errors Slips fits situations like: designing to prevent; recover from execution errors — actions that dont match the users intent; designing critical action confirmations; distinct affordances for similar-purpose elements.

How do I install Errors Slips in Claude Code?

Run `npx skills add hashgraph-online/awesome-codex-plugins --skill errors-slips -a claude-code`. Or copy the skill folder (plugins/HDeibler/universal-design-principles/plugins/interaction-and-control-principles/skills/errors-slips in hashgraph-online/awesome-codex-plugins) into .claude/skills/errors-slips in your project. Claude Code loads it when a task matches its description.

How do I install Errors Slips in Codex?

Run `npx skills add hashgraph-online/awesome-codex-plugins --skill errors-slips -a codex`. Or copy the skill folder (plugins/HDeibler/universal-design-principles/plugins/interaction-and-control-principles/skills/errors-slips in hashgraph-online/awesome-codex-plugins) into .agents/skills/errors-slips in your project. Codex loads it when a task matches its description.

Can I use Errors Slips 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 hashgraph-online/awesome-codex-plugins --skill errors-slips -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/errors-slips, .gemini/skills/errors-slips, .github/skills/errors-slips and .opencode/skills/errors-slips in your project.

What does Errors Slips need to run?

SKILL.md names no scripts, command-line tools or credentials: Errors Slips is instructions for the agent only.

Does Errors Slips 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 Errors Slips 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 Errors Slips use?

Errors Slips is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Errors Slips use?

About 1.3k tokens (SKILL.md is roughly 5.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 702 tokens, read only when the agent opens those files.

What are the alternatives to Errors Slips?

Skills that share tags, products or a category with Errors Slips: Design System (affaan-m/ECC, 274k stars), Design Guide (paperclipai/paperclip, 98k stars), Design Audit Against Rams' Principles (thedotmack/claude-mem, 97k stars) and Figma Design to Code (warpdotdev/warp, 65k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Errors Slips?

hashgraph-online (a GitHub organization) maintains it in hashgraph-online/awesome-codex-plugins, which has 1,232 GitHub stars. The repository holds 736 skills in this directory. The repository was last updated on October 6, 2026.

Source: hashgraph-online/awesome-codex-plugins on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.