Vercel Optimize Audit
vercel-labs/agent-skills
Runs a metrics-first audit of a deployed Vercel project, gating investigations on real signals to produce ranked, citation-backed cost and performance recommendations.
Design and review recoverable Go CLI errors, exit semantics, structured logging, debug modes, traces, profiles, redaction, and user-consented diagnostic bundles.
Install Go CLI Errors Observability
$ npx skills add hashgraph-online/awesome-codex-plugins --skill go-cli-errors-observability -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins go-cli-errors-observability --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/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/go-cli-errors-observability .claude/skills/go-cli-errors-observability && 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 "go-cli-errors-observability" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/go-cli-errors-observability into .claude/skills/go-cli-errors-observability/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "go-cli-errors-observability", 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/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/go-cli-errors-observabilityType 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 hashgraph-online/awesome-codex-plugins --skill go-cli-errors-observability -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins go-cli-errors-observability --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/go-cli-errors-observability .agents/skills/go-cli-errors-observability && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "go-cli-errors-observability" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/go-cli-errors-observability into .agents/skills/go-cli-errors-observability/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "go-cli-errors-observability", 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 hashgraph-online/awesome-codex-plugins --skill go-cli-errors-observability -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins go-cli-errors-observability --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/go-cli-errors-observability .cursor/skills/go-cli-errors-observability && 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 "go-cli-errors-observability" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/go-cli-errors-observability into .cursor/skills/go-cli-errors-observability/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "go-cli-errors-observability", 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/hashgraph-online/awesome-codex-plugins.git --path plugins/LVTD-LLC/skills/skills/go-cli-errors-observability--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 hashgraph-online/awesome-codex-plugins --skill go-cli-errors-observability -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins go-cli-errors-observability --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/go-cli-errors-observability .gemini/skills/go-cli-errors-observability && 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 "go-cli-errors-observability" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/go-cli-errors-observability into .gemini/skills/go-cli-errors-observability/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "go-cli-errors-observability", 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 hashgraph-online/awesome-codex-plugins go-cli-errors-observabilityInstalls 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 hashgraph-online/awesome-codex-plugins --skill go-cli-errors-observability -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/go-cli-errors-observability .github/skills/go-cli-errors-observability && 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 "go-cli-errors-observability" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/go-cli-errors-observability into .github/skills/go-cli-errors-observability/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "go-cli-errors-observability", 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 hashgraph-online/awesome-codex-plugins --skill go-cli-errors-observability -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins go-cli-errors-observability --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/go-cli-errors-observability .opencode/skills/go-cli-errors-observability && 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 "go-cli-errors-observability" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/go-cli-errors-observability into .opencode/skills/go-cli-errors-observability/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "go-cli-errors-observability", 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
go-cli-errors-observability- GitHub stars
- 1.2k
- Token cost
- ~791 tokens
- SKILL.md length
- 322 words
- Files
- 8 (incl. references)
- Skills in repo
- 736
- Repo updated
- First seen
- Licence
- MIT
At a glance
Design and review recoverable Go CLI errors, exit semantics, structured logging, debug modes, traces, profiles, redaction, and user-consented diagnostic bundles.
- Works in 8 steps: Classify failures by user action,… → Preserve machine-checkable causes with… → Map causes to concise user messages and… → …
- A CLI needs actionable failures
- SKILL.md covers Core Workflow, Read Next, Guardrails and Source Notes
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Go CLI Errors Observability is an agent skill from hashgraph-online/awesome-codex-plugins. Design and review recoverable Go CLI errors, exit semantics, structured logging, debug modes, traces, profiles, redaction, and user-consented diagnostic bundles. Use when a CLI needs actionable failures, safe support evidence, production troubleshooting, or observability that does not corrupt command output or expose secrets.
Its SKILL.md is about 790 tokens, which your agent loads only when the skill is triggered. The skill folder holds 11 other files, including reference files (for example `agents/openai.yaml`, `guidelines.md` and `references/errors-observability/examples.md`). Compatibility notes: Codex, Claude Code, and other Agent Skills-compatible clients.
It sits in DevOps & Cloud, covering Observability. 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 MIT.
When your agent uses it
- A CLI needs actionable failures
- Safe support evidence
- Production troubleshooting
- Observability that does not corrupt command output
Example prompts
- “/go-cli-errors-observability”
Requirements
- Compatibility (from SKILL.md): Codex, Claude Code, and other Agent Skills-compatible clients.
Workflow steps
8 steps, taken from the first numbered list in SKILL.md.
- Classify failures by user action, dependency, cancellation, and internal defect.
- Preserve machine-checkable causes with wrapping, types, or sentinels.
- Map causes to concise user messages and stable exit behavior at the boundary.
- Assign one terminal owner to render, log, and map each failure.
- Preserve material cleanup failures without hiding the primary cause.
- Add opt-in verbosity and structured logs on stderr or a dedicated sink.
- Allowlist and redact diagnostic evidence; require consent before collection or upload.
- Test recovery guidance, output separation, redaction, and cancellation.
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.
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
pkg.go.dev
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.
Compatibility
Codex, Claude Code, and other Agent Skills-compatible clients.
From compatibility in the SKILL.md frontmatter.
Context cost
Go CLI Errors Observability loads about 791 tokens when it runs, and up to ~2.5k if it reads all its reference files. Until then it costs about 89 tokens; SKILL.md has 322 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 hashgraph-online/awesome-codex-plugins at commit 16b4156, republished under its MIT licence (© hashgraph-online). 322 words, ~791 tokens.
Download SKILL.mdSave it as
.claude/skills/go-cli-errors-observability/SKILL.md (or your agent's skills folder). This skill also uses 7 other files; get the full folder from GitHub.- name
- go-cli-errors-observability
- description
- Design and review recoverable Go CLI errors, exit semantics, structured logging, debug modes, traces, profiles, redaction, and user-consented diagnostic bundles. Use when a CLI needs actionable failures, safe support evidence, production troubleshooting, or observability that does not corrupt command output or expose secrets.
- compatibility
- Codex, Claude Code, and other Agent Skills-compatible clients.
- license
- MIT
- metadata.version
- 0.3.0
- metadata.displayName
- Go CLI Errors and Observability
- metadata.category
- Go
- metadata.tags
- go,golang,cli,errors,observability,logging,diagnostics
Go CLI Errors and Observability
Design failures for recovery first, then add the minimum safe evidence needed to diagnose them. Keep internal detail out of the normal user contract.
Core Workflow
- Classify failures by user action, dependency, cancellation, and internal defect.
- Preserve machine-checkable causes with wrapping, types, or sentinels.
- Map causes to concise user messages and stable exit behavior at the boundary.
- Assign one terminal owner to render, log, and map each failure.
- Preserve material cleanup failures without hiding the primary cause.
- Add opt-in verbosity and structured logs on stderr or a dedicated sink.
- Allowlist and redact diagnostic evidence; require consent before collection or upload.
- Test recovery guidance, output separation, redaction, and cancellation.
Read Next
| Task | Load |
|---|---|
| Design error taxonomy and recovery | guidelines.md, workflows/design-error-recovery.md |
| Add logging or support diagnostics | references/errors-observability/rules.md, workflows/add-safe-diagnostics.md |
| Review code patterns | references/errors-observability/examples.md |
| Understand layering and privacy | references/errors-observability/knowledge.md |
Guardrails
- Never log secrets, authorization headers, raw config, or unreviewed environment data.
- Do not make normal stdout depend on log level.
- Preserve cancellation and timeout identity with
errors.Is. - Do not both log and return the same failure at intermediate layers.
- Do not use panic for ordinary validation, dependency, or user errors.
- Do not collect or upload diagnostics without a visible allowlist and consent.
- Protect profiling or debug servers; default them off and bind locally.
Source Notes
Guidance is transformed and paraphrased from Marian Montagnino, Building Modern CLI Applications in Go (Packt, 2023), especially Chapter 9, and Ricardo Gerardi, Powerful Command-Line Applications in Go (2021).
Handler composition, context correlation, and joined-error guidance also incorporates transformed material from Inanc Gumus, Go by Example: Programmer's Guide to Idiomatic and Testable Programs (Manning, 2025), Chapter 9.
Error ownership, panic boundaries, and cleanup-failure guidance also incorporates transformed material from Teiva Harsanyi, 100 Go Mistakes and How to Avoid Them (Manning, 2022), Chapter 7.
Verify current logging APIs against https://pkg.go.dev/log/slog and error APIs against the current Go standard library documentation.
© hashgraph-online, MIT. 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 7 other files (references) in plugins/LVTD-LLC/skills/skills/go-cli-errors-observability of hashgraph-online/awesome-codex-plugins.
- SKILL.md
- agents/openai.yaml
- guidelines.md
- references/errors-observability/examples.md
- references/errors-observability/knowledge.md
- references/errors-observability/rules.md
- workflows/add-safe-diagnostics.md
- workflows/design-error-recovery.md
Open the folder on GitHubat commit 16b4156
Compare with similar skills
Go CLI Errors Observability 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 |
|---|---|---|---|---|---|---|
| Go CLI Errors Observability this skillhashgraph-online/awesome-codex-plugins | 1.2k | — | ~791 | Automated safety check: Pass | MIT | |
| Vercel Optimize Auditvercel-labs/agent-skills | 32k | 8 repos | ~4.3k | Automated safety check: Pass | None | |
| Kubeshark Installerkubeshark/kubeshark | 12k | — | ~3.6k | Automated safety check: Notes | Apache-2.0 | |
| Kubeshark KFL2 Filter Referencekubeshark/kubeshark | 12k | — | ~3.6k | Automated safety check: Pass | Apache-2.0 | |
| KubeSphere ServiceMesh Managerkubesphere/kubesphere | 17k | — | ~2.4k | Automated safety check: Pass | Custom licence | |
| Kubernetes Network Root Cause Analysiskubeshark/kubeshark | 12k | — | ~5.3k | Automated safety check: Pass | Apache-2.0 |
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Related
Categories
Questions about Go CLI Errors Observability
What does Go CLI Errors Observability do?
Design and review recoverable Go CLI errors, exit semantics, structured logging, debug modes, traces, profiles, redaction, and user-consented diagnostic bundles. Go CLI Errors Observability is an agent skill from hashgraph-online/awesome-codex-plugins. Design and review recoverable Go CLI errors, exit semantics, structured logging, debug modes, traces, profiles, redaction, and user-consented diagnostic bundles.
When should I use Go CLI Errors Observability?
Go CLI Errors Observability fits situations like: A CLI needs actionable failures; safe support evidence; production troubleshooting; observability that does not corrupt command output.
How do I install Go CLI Errors Observability in Claude Code?
Run `npx skills add hashgraph-online/awesome-codex-plugins --skill go-cli-errors-observability -a claude-code`. Or copy the skill folder (plugins/LVTD-LLC/skills/skills/go-cli-errors-observability in hashgraph-online/awesome-codex-plugins) into .claude/skills/go-cli-errors-observability in your project. Claude Code loads it when a task matches its description.
How do I install Go CLI Errors Observability in Codex?
Run `npx skills add hashgraph-online/awesome-codex-plugins --skill go-cli-errors-observability -a codex`. Or copy the skill folder (plugins/LVTD-LLC/skills/skills/go-cli-errors-observability in hashgraph-online/awesome-codex-plugins) into .agents/skills/go-cli-errors-observability in your project. Codex loads it when a task matches its description.
Can I use Go CLI Errors Observability 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 go-cli-errors-observability -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/go-cli-errors-observability, .gemini/skills/go-cli-errors-observability, .github/skills/go-cli-errors-observability and .opencode/skills/go-cli-errors-observability in your project.
What does Go CLI Errors Observability need to run?
SKILL.md names no scripts, command-line tools or credentials: Go CLI Errors Observability is instructions for the agent only. Compatibility (from SKILL.md): Codex, Claude Code, and other Agent Skills-compatible clients..
Does Go CLI Errors Observability access the network?
SKILL.md names 1 domain. As links in the text: pkg.go.dev. This is read from the text; nothing was executed.
Is Go CLI Errors Observability 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 Go CLI Errors Observability use?
Go CLI Errors Observability is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Go CLI Errors Observability use?
About 791 tokens (SKILL.md is roughly 3.2k 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 1.7k tokens, read only when the agent opens those files.
What are the alternatives to Go CLI Errors Observability?
Skills that share tags, products or a category with Go CLI Errors Observability: Vercel Optimize Audit (vercel-labs/agent-skills, 32k stars), Kubeshark Installer (kubeshark/kubeshark, 12k stars), Kubeshark KFL2 Filter Reference (kubeshark/kubeshark, 12k stars) and KubeSphere ServiceMesh Manager (kubesphere/kubesphere, 17k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Go CLI Errors Observability?
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.