Memstack Development Mentor
cwinvestments/memstack
A skill your agent uses when the user says 'teach me', 'explain as you go', 'mentor mode', 'walk me through', 'help me learn', 'explain why', 'learning mode', or wants real-time plain language…
Decode an error message or stack trace into a plain-English cause, the exact fix, and how to prevent it.
Install Error Decoder
$ npx skills add mohitagw15856/pm-claude-skills --skill error-decoder -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install mohitagw15856/pm-claude-skills error-decoder --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/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/error-decoder .claude/skills/error-decoder && 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 "error-decoder" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/error-decoder into .claude/skills/error-decoder/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "error-decoder", 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/mohitagw15856/pm-claude-skills/tree/main/skills/error-decoderType 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 mohitagw15856/pm-claude-skills --skill error-decoder -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install mohitagw15856/pm-claude-skills error-decoder --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/error-decoder .agents/skills/error-decoder && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "error-decoder" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/error-decoder into .agents/skills/error-decoder/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "error-decoder", 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 mohitagw15856/pm-claude-skills --skill error-decoder -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install mohitagw15856/pm-claude-skills error-decoder --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/error-decoder .cursor/skills/error-decoder && 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 "error-decoder" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/error-decoder into .cursor/skills/error-decoder/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "error-decoder", 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/mohitagw15856/pm-claude-skills.git --path skills/error-decoder--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 mohitagw15856/pm-claude-skills --skill error-decoder -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install mohitagw15856/pm-claude-skills error-decoder --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/error-decoder .gemini/skills/error-decoder && 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 "error-decoder" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/error-decoder into .gemini/skills/error-decoder/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "error-decoder", 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 mohitagw15856/pm-claude-skills error-decoderInstalls 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 mohitagw15856/pm-claude-skills --skill error-decoder -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/error-decoder .github/skills/error-decoder && 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 "error-decoder" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/error-decoder into .github/skills/error-decoder/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "error-decoder", 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 mohitagw15856/pm-claude-skills --skill error-decoder -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install mohitagw15856/pm-claude-skills error-decoder --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/error-decoder .opencode/skills/error-decoder && 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 "error-decoder" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/error-decoder into .opencode/skills/error-decoder/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "error-decoder", 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
error-decoder- GitHub stars
- 1.4k
- Token cost
- ~678 tokens
- SKILL.md length
- 361 words
- Files
- 1
- Skills in repo
- 1,322
- Repo updated
- First seen
- Licence
- MIT
At a glance
Decode an error message or stack trace into a plain-English cause, the exact fix, and how to prevent it.
- Works in 4 steps: What it means → Most likely cause → The fix → …
- Asked to explain an error
- SKILL.md covers Working from a brief, Input, Output Structure and Quality Checks, plus 2 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Error Decoder is an agent skill from mohitagw15856/pm-claude-skills. Decode an error message or stack trace into a plain-English cause, the exact fix, and how to prevent it. Use when asked to explain an error, debug a stack trace, figure out why code is throwing, or make sense of a cryptic exception. Produces a structured diagnosis: what the error means, the most likely cause, a concrete fix with code, and a prevention tip.
Its SKILL.md is about 680 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Development, covering Debugging and Plain language and style rules. The repository describes itself as: 1255 professional Agent Skills for Claude, ChatGPT, Gemini, Cursor & Codex — PRDs, postmortems, leases, medical bills, layoffs, go-bags, new countries. Plain markdown, MIT, in… The licence is MIT.
When your agent uses it
- Asked to explain an error
- Debug a stack trace
- Figure out why code is throwing
- Make sense of a cryptic exception
Example prompts
- “/error-decoder”
Workflow steps
4 steps, taken from the step headings in SKILL.md.
What it can do on your machine
Read from SKILL.md and the folder at commit 1cbf1f0. 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.
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
Error Decoder loads about 678 tokens when it runs. Until then it costs about 93 tokens; SKILL.md has 361 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
The full file from mohitagw15856/pm-claude-skills at commit 1cbf1f0, republished under its MIT licence (© mohitagw15856). 361 words, ~678 tokens.
Download SKILL.mdSave it as
.claude/skills/error-decoder/SKILL.md (or your agent's skills folder).- name
- error-decoder
- description
- Decode an error message or stack trace into a plain-English cause, the exact fix, and how to prevent it. Use when asked to explain an error, debug a stack trace, figure out why code is throwing, or make sense of a cryptic exception. Produces a structured diagnosis: what the error means, the most likely cause, a concrete fix with code, and a prevention tip.
Error Decoder Skill
Turn a scary error into a clear answer — the way a senior engineer would read it over your shoulder.
Working from a brief
You'll often get just an error string or a partial stack trace, with no surrounding code. Always deliver a complete diagnosis anyway — infer the language/framework and the likely context from the error itself, and mark inferences as (assumed — confirm). Never refuse for missing context and never leave bracketed placeholders.
Input
Ask for these if not provided:
- The error — the message, stack trace, or crash output, unabridged
- The language or runtime — and version, if the error does not name it
- The relevant code — the frame the trace points at, if available
- What the user was doing — the command or action that triggered it; infer anything missing
Output Structure
1. What it means
One or two plain-English sentences: what this error is actually saying (translate the jargon).
2. Most likely cause
The top cause given the message, ranked if there are several plausible ones. Point at the exact line/frame in the trace that matters and say why.
3. The fix
Concrete, copy-pasteable steps or code. If the cause is uncertain, give the highest-probability fix first, then the fallback.
4. Why it happened / prevent it
One line on the underlying reason and a guardrail (a check, a type, a test, a config) that stops it recurring.
Show full SKILL.md (132 more words)Show less
Quality Checks
- The explanation translates the error into plain language (no restating the raw message)
- The cause points to a specific line/frame or condition, not "something went wrong"
- The fix is concrete and runnable, not "check your code"
- Assumptions about language/context are labelled
Anti-Patterns
- Do not just paraphrase the error — explain what it means and why it happened
- Do not give a generic "try reinstalling" answer when the trace points to a specific cause
- Do not invent file names or code that wasn't given — infer and label, or ask for the one missing thing only if truly blocking
- Do not stop at the fix — always add the one prevention step
Example Trigger Phrases
- "Explain an error."
- "Debug a stack trace."
- "Figure out why code is throwing."
- "Make sense of a cryptic exception."
© mohitagw15856, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in skills/error-decoder of mohitagw15856/pm-claude-skills.
Open the folder on GitHubat commit 1cbf1f0
Compare with similar skills
Error Decoder 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 |
|---|---|---|---|---|---|---|
| Error Decoder this skillmohitagw15856/pm-claude-skills | 1.4k | — | ~678 | Automated safety check: Pass | MIT | |
| Memstack Development Mentorcwinvestments/memstack | 423 | — | ~1.6k | Automated safety check: Pass | MIT | |
| Copilot Code Coachtimothywarner/chatgptclass | 143 | — | ~1.9k | Automated safety check: Pass | Custom licence | |
| Code Walkthroughtestdouble/han | 279 | — | ~4.4k | Automated safety check: Pass | MIT | |
| Staticphp Documentation Synccrazywhalecc/static-php-cli | 1.9k | — | ~2.2k | Automated safety check: Pass | MIT | |
| Tldr Deepparcadei/Continuous-Claude-v3 | 3.9k | 2 repos | ~677 | Automated safety check: Pass | MIT |
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Related
Categories
Questions about Error Decoder
What does Error Decoder do?
Decode an error message or stack trace into a plain-English cause, the exact fix, and how to prevent it. Error Decoder is an agent skill from mohitagw15856/pm-claude-skills. Decode an error message or stack trace into a plain-English cause, the exact fix, and how to prevent it.
When should I use Error Decoder?
Error Decoder fits situations like: asked to explain an error; debug a stack trace; figure out why code is throwing; make sense of a cryptic exception.
How do I install Error Decoder in Claude Code?
Run `npx skills add mohitagw15856/pm-claude-skills --skill error-decoder -a claude-code`. Or copy the skill folder (skills/error-decoder in mohitagw15856/pm-claude-skills) into .claude/skills/error-decoder in your project. Claude Code loads it when a task matches its description.
How do I install Error Decoder in Codex?
Run `npx skills add mohitagw15856/pm-claude-skills --skill error-decoder -a codex`. Or copy the skill folder (skills/error-decoder in mohitagw15856/pm-claude-skills) into .agents/skills/error-decoder in your project. Codex loads it when a task matches its description.
Can I use Error Decoder 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 mohitagw15856/pm-claude-skills --skill error-decoder -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/error-decoder, .gemini/skills/error-decoder, .github/skills/error-decoder and .opencode/skills/error-decoder in your project.
What does Error Decoder need to run?
SKILL.md names no scripts, command-line tools or credentials: Error Decoder is instructions for the agent only.
Does Error Decoder 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 Error Decoder 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 Error Decoder use?
Error Decoder is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Error Decoder use?
About 678 tokens (SKILL.md is roughly 2.7k 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 Error Decoder?
Skills that share tags, products or a category with Error Decoder: Memstack Development Mentor (cwinvestments/memstack, 423 stars), Copilot Code Coach (timothywarner/chatgptclass, 143 stars), Code Walkthrough (testdouble/han, 279 stars) and Staticphp Documentation Sync (crazywhalecc/static-php-cli, 1.9k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Error Decoder?
mohitagw15856 (a GitHub user) maintains it in mohitagw15856/pm-claude-skills, which has 1,431 GitHub stars. The repository holds 1,322 skills in this directory. The repository was last updated on October 7, 2026.
Source: mohitagw15856/pm-claude-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.