Telemetry Standards
supabase/supabase
PostHog event tracking standards for Supabase Studio. An agent skill from supabase/supabase.
XML tag structure patterns for Claude Code agents and commands.
$ npx skills add MadAppGang/claude-code --skill xml-standards -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install MadAppGang/claude-code xml-standards --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/MadAppGang/claude-code.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/agentdev/skills/xml-standards .claude/skills/xml-standards && 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 "xml-standards" agent skill from https://github.com/MadAppGang/claude-code/tree/main/plugins/agentdev/skills/xml-standards into .claude/skills/xml-standards/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "xml-standards", 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/MadAppGang/claude-code/tree/main/plugins/agentdev/skills/xml-standardsType 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 MadAppGang/claude-code --skill xml-standards -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install MadAppGang/claude-code xml-standards --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/MadAppGang/claude-code.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/agentdev/skills/xml-standards .agents/skills/xml-standards && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "xml-standards" agent skill from https://github.com/MadAppGang/claude-code/tree/main/plugins/agentdev/skills/xml-standards into .agents/skills/xml-standards/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "xml-standards", 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 MadAppGang/claude-code --skill xml-standards -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install MadAppGang/claude-code xml-standards --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/MadAppGang/claude-code.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/agentdev/skills/xml-standards .cursor/skills/xml-standards && 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 "xml-standards" agent skill from https://github.com/MadAppGang/claude-code/tree/main/plugins/agentdev/skills/xml-standards into .cursor/skills/xml-standards/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "xml-standards", 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/MadAppGang/claude-code.git --path plugins/agentdev/skills/xml-standards--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 MadAppGang/claude-code --skill xml-standards -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install MadAppGang/claude-code xml-standards --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/MadAppGang/claude-code.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/agentdev/skills/xml-standards .gemini/skills/xml-standards && 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 "xml-standards" agent skill from https://github.com/MadAppGang/claude-code/tree/main/plugins/agentdev/skills/xml-standards into .gemini/skills/xml-standards/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "xml-standards", 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 MadAppGang/claude-code xml-standardsInstalls 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 MadAppGang/claude-code --skill xml-standards -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/MadAppGang/claude-code.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/agentdev/skills/xml-standards .github/skills/xml-standards && 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 "xml-standards" agent skill from https://github.com/MadAppGang/claude-code/tree/main/plugins/agentdev/skills/xml-standards into .github/skills/xml-standards/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "xml-standards", 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 MadAppGang/claude-code --skill xml-standards -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install MadAppGang/claude-code xml-standards --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/MadAppGang/claude-code.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/agentdev/skills/xml-standards .opencode/skills/xml-standards && 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 "xml-standards" agent skill from https://github.com/MadAppGang/claude-code/tree/main/plugins/agentdev/skills/xml-standards into .opencode/skills/xml-standards/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "xml-standards", 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.
xml-standardsXML tag structure patterns for Claude Code agents and commands.
XML Standards is an agent skill from MadAppGang/claude-code. XML tag structure patterns for Claude Code agents and commands. Use when designing or implementing agents to ensure proper XML structure following Anthropic best practices.
Its SKILL.md is about 1.4k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
The repository describes itself as: claude code plugins marketplace. The licence is MIT.
4 steps, taken from the first numbered list in SKILL.md.
Read from SKILL.md and the folder at commit 6097ad4. It shows what the files ask for, not the result of running them.
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.
No scripts in the folder and no shell commands in SKILL.md (its code samples are xml).
From the folder's file list and the shell code blocks in SKILL.md.
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
XML Standards loads about 1.4k tokens when it runs. Until then it costs about 47 tokens; SKILL.md has 97 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.
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.
The full file from MadAppGang/claude-code at commit 6097ad4, republished under its MIT licence (© MadAppGang). 97 words, ~1,393 tokens.
.claude/skills/xml-standards/SKILL.md (or your agent's skills folder).plugin: agentdev updated: 2026-01-20
<role>Defines agent identity and purpose.
<role>
<identity>Expert [Domain] Specialist</identity>
<expertise>
- Core skill 1
- Core skill 2
- Core skill 3
</expertise>
<mission>
Clear statement of what this agent accomplishes
</mission>
</role><instructions>Defines behavior constraints and workflow.
<instructions>
<critical_constraints>
<constraint_name>
Description of critical rule that must be followed
</constraint_name>
<todowrite_requirement>
You MUST use Tasks to track workflow progress.
</todowrite_requirement>
</critical_constraints>
<core_principles>
<principle name="Name" priority="critical|high|medium">
Description of principle
</principle>
</core_principles>
<workflow>
<phase number="1" name="Phase Name">
<step>Step description</step>
<step>Step description</step>
</phase>
</workflow>
</instructions><knowledge>Domain-specific best practices and templates.
<knowledge>
<section_name>
Best practices, patterns, or reference material
</section_name>
<templates>
<template name="Template Name">
Template content
</template>
</templates>
</knowledge><examples>Concrete usage scenarios (2-4 required).
<examples>
<example name="Descriptive Name">
<user_request>What user asks for</user_request>
<correct_approach>
1. Step one
2. Step two
3. Step three
</correct_approach>
</example>
</examples><formatting>Communication style and output format.
<formatting>
<communication_style>
- Style guideline 1
- Style guideline 2
</communication_style>
<completion_message_template>
Template for completion messages
</completion_message_template>
</formatting><orchestration>
<allowed_tools>Task, Bash, Read, TaskCreate, TaskUpdate, TaskList, TaskGet, AskUserQuestion</allowed_tools>
<forbidden_tools>Write, Edit</forbidden_tools>
<delegation_rules>
<rule scope="design">ALL design → architect agent</rule>
<rule scope="implementation">ALL implementation → developer agent</rule>
<rule scope="review">ALL reviews → reviewer agent</rule>
</delegation_rules>
<phases>
<phase number="1" name="Phase Name">
<objective>What this phase achieves</objective>
<steps>
<step>Step description</step>
</steps>
<quality_gate>Exit criteria for this phase</quality_gate>
</phase>
</phases>
</orchestration>
<error_recovery>
<strategy>
Recovery steps for common failures
</strategy>
</error_recovery><planning_methodology>
<approach>How planning is performed</approach>
<deliverables>What planning produces</deliverables>
</planning_methodology>
<gap_analysis>
<checklist>Items to verify during planning</checklist>
</gap_analysis>
<output_structure>
<format>Structure of planning output</format>
</output_structure><implementation_standards>
<file_writing_standards>
<standard name="Standard Name">Description</standard>
</file_writing_standards>
<quality_checks mandatory="true">
<check name="check_name" order="1">
<tool>Tool name</tool>
<command>Command to run</command>
<requirement>What must pass</requirement>
<on_failure>Recovery action</on_failure>
</check>
</quality_checks>
<validation_checks>
<check order="1" name="Check Name">
Validation criteria
</check>
</validation_checks>
</implementation_standards><review_criteria>
<focus_areas>
<area name="Area Name" priority="critical|high|medium" weight="20%">
**Check:**
- Item to verify
- Item to verify
**Common Issues:**
- Issue description
**Critical if**: Condition for critical severity
**High if**: Condition for high severity
</area>
</focus_areas>
<feedback_format>
Template for review feedback
</feedback_format>
</review_criteria>
<approval_criteria>
<status name="PASS">Criteria for passing</status>
<status name="CONDITIONAL">Criteria for conditional approval</status>
<status name="FAIL">Criteria for failure</status>
</approval_criteria><testing_strategy>
<approach>Testing methodology</approach>
<test_types>
<type name="Type Name">Description</type>
</test_types>
</testing_strategy>
<coverage_requirements>
<requirement>Coverage criteria</requirement>
</coverage_requirements>name, priority, order attributes<template name="Example">
```language
// code here - note: opening ``` directly under tag</template>
```
Only in XML attribute values and text nodes (NOT in code blocks):
< for <> for >& for &© MadAppGang, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Just SKILL.md in plugins/agentdev/skills/xml-standards of MadAppGang/claude-code.
Open the folder on GitHubat commit 6097ad4
XML Standards 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 |
|---|---|---|---|---|---|---|
| XML Standards this skillMadAppGang/claude-code | 285 | — | ~1.4k | Automated safety check: Pass | MIT | |
| Telemetry Standardssupabase/supabase | 111k | — | ~2k | Automated safety check: Pass | Apache-2.0 | |
| Cpp Coding Standardsaffaan-m/ECC | 276k | 4 repos | ~5.6k | Automated safety check: Pass | MIT | |
| Java Coding Standardsaffaan-m/ECC | 276k | 1 repos | ~2.9k | Automated safety check: Pass | MIT | |
| Coding Standardsaffaan-m/ECC | 276k | 3 repos | ~2.6k | Automated safety check: Pass | MIT | |
| Coding Standardsaffaan-m/ECC | 276k | 2 repos | ~2.6k | Automated safety check: Pass | MIT |
supabase/supabase
PostHog event tracking standards for Supabase Studio. An agent skill from supabase/supabase.
affaan-m/ECC
C++ coding standards based on the C++ Core Guidelines (isocpp.github.io).
affaan-m/ECC
Java coding standards for Spring Boot and Quarkus services: naming, immutability, Optional usage, streams, exceptions, generics, CDI, reactive patterns, and project layout.
affaan-m/ECC
适用于TypeScript、JavaScript、React和Node.js开发的通用编码标准、最佳实践和模式. An agent skill from affaan-m/ECC.
affaan-m/ECC
TypeScript、JavaScript、React、Node.js開発のための汎用コーディング標準、ベストプラクティス、パターン。
affaan-m/ECC
TypeScript, JavaScript, React, Node.js 개발을 위한 범용 코딩 표준, 모범 사례 및 패턴.
MadAppGang/claude-code
Content brief template and creation methodology for SEO-optimized content.
MadAppGang/claude-code
A skill your agent uses when detecting project technology stack from files/configs/directory structure, auto-loading framework-specific skills, or analyzing multi-stack fullstack projects (e.g…
MadAppGang/claude-code
On-page SEO optimization techniques including keyword density, meta tags, heading structure, and readability.
MadAppGang/claude-code
Techniques for expanding seed keywords and clustering by topic and intent.
MadAppGang/claude-code
SERP analysis techniques for intent classification, feature identification, and competitive intelligence.
MadAppGang/claude-code
A skill your agent uses when deciding whether to launch an agent, selecting which agent to use, or coordinating multiple agents.
XML tag structure patterns for Claude Code agents and commands. XML Standards is an agent skill from MadAppGang/claude-code. XML tag structure patterns for Claude Code agents and commands.
XML Standards fits situations like: implementing agents to ensure proper XML structure following Anthropic best practices.
Run `npx skills add MadAppGang/claude-code --skill xml-standards -a claude-code`. Or copy the skill folder (plugins/agentdev/skills/xml-standards in MadAppGang/claude-code) into .claude/skills/xml-standards in your project. Claude Code loads it when a task matches its description.
Run `npx skills add MadAppGang/claude-code --skill xml-standards -a codex`. Or copy the skill folder (plugins/agentdev/skills/xml-standards in MadAppGang/claude-code) into .agents/skills/xml-standards in your project. Codex loads it when a task matches its description.
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add MadAppGang/claude-code --skill xml-standards -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/xml-standards, .gemini/skills/xml-standards, .github/skills/xml-standards and .opencode/skills/xml-standards in your project.
SKILL.md names no scripts, command-line tools or credentials: XML Standards is instructions for the agent only.
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.
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.
XML Standards is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
About 1.4k tokens (SKILL.md is roughly 5.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
Skills that share tags, products or a category with XML Standards: Telemetry Standards (supabase/supabase, 111k stars), Cpp Coding Standards (affaan-m/ECC, 276k stars), Java Coding Standards (affaan-m/ECC, 276k stars) and Coding Standards (affaan-m/ECC, 276k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
MadAppGang (a GitHub organization) maintains it in MadAppGang/claude-code, which has 285 GitHub stars. The repository holds 69 skills in this directory. The repository was last updated on March 15, 2026.
Source: MadAppGang/claude-code on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.