cqrs-implementation

cqrs-implementation is a skill for Claude Code, Codex from rmyndharis/antigravity-skills. It costs 35 tokens per session (225 once invoked), scanned A, original, MIT.

A guide to Command Query Responsibility Segregation, an architecture pattern that uses separate models for changing data and reading data. It also covers event-sourced systems, which record changes as a sequence of events.

In plain words
What is it for?
Use it to design separate command and query models, read-model projections, synchronization, and performance checks.
Why use it?
It helps when reading and writing place different demands on a system or when complex reporting needs to scale independently from updates.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to design separate command and query models, read-model projections, synchronization, and performance checks.

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Install with agentmods
npx agentmods add skills/rmyndharis/antigravity-skills/cqrs-implementation
About the project

Antigravity Skill Vault is a collection of reusable Agent Skills for Google Antigravity, covering software development, operations, security, and business work. It is for people who want Antigravity agents to follow specialized expertise, personas, and structured workflows. The catalogue skills are entries from this collection.

rmyndharis/antigravity-skills · 1,517 stars · on GitHub

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add rmyndharis/antigravity-skills --skill cqrs-implementation
Clone the repo
git clone --depth 1 https://github.com/rmyndharis/antigravity-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for cqrs-implementation

README.md
[![agentmods](https://agentmods.dev/badge/skills/rmyndharis/antigravity-skills/cqrs-implementation/github.svg)](https://agentmods.dev/skills/rmyndharis/antigravity-skills/cqrs-implementation)
Your own site
<a href="https://agentmods.dev/skills/rmyndharis/antigravity-skills/cqrs-implementation"><img src="https://agentmods.dev/badge/skills/rmyndharis/antigravity-skills/cqrs-implementation/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for cqrs-implementation

Your own site · 80×15
<a href="https://agentmods.dev/skills/rmyndharis/antigravity-skills/cqrs-implementation"><img src="https://agentmods.dev/badge/skills/rmyndharis/antigravity-skills/cqrs-implementation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 225 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00035 $0.00225
Opus 5 $0.00017 $0.00112
Sonnet 5 $0.00007 $0.00045
Haiku 4.5 $0.00003 $0.00022

Measured 6d ago against content hash a33f450c58a6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

cqrs-implementation scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

skills/cqrs-implementation/SKILL.md · 36 lines

What it actually says

CQRS Implementation

Comprehensive guide to implementing CQRS (Command Query Responsibility Segregation) patterns.

Use this skill when

  • Separating read and write concerns
  • Scaling reads independently from writes
  • Building event-sourced systems
  • Optimizing complex query scenarios
  • Different read/write data models are needed
  • High-performance reporting is required

Do not use this skill when

  • The domain is simple and CRUD is sufficient
  • You cannot operate separate read/write models
  • Strong immediate consistency is required everywhere

Instructions

  • Identify read/write workloads and consistency needs.
  • Define command and query models with clear boundaries.
  • Implement read model projections and synchronization.
  • Validate performance, recovery, and failure modes.
  • If detailed patterns are required, open resources/implementation-playbook.md.

Resources

  • resources/implementation-playbook.md for detailed CQRS patterns and templates.
Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 6d ago First seen · 36 lines · 35 tokens per session scan A a33f450c58a6

Subscribe to this mod's changes

cqrs-implementation is a skill published in the GitHub repository rmyndharis/antigravity-skills (1,517 stars, last pushed 1mo ago), licensed MIT. It adds 35 tokens to every session and 225 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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