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.
npx skills add ivegamsft/basecoat --skill cqrs-event-sourcinggit clone --depth 1 https://github.com/ivegamsft/basecoatWrote 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.
[](https://agentmods.dev/skills/ivegamsft/basecoat/cqrs-event-sourcing)<a href="https://agentmods.dev/skills/ivegamsft/basecoat/cqrs-event-sourcing"><img src="https://agentmods.dev/badge/skills/ivegamsft/basecoat/cqrs-event-sourcing/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.
<a href="https://agentmods.dev/skills/ivegamsft/basecoat/cqrs-event-sourcing"><img src="https://agentmods.dev/badge/skills/ivegamsft/basecoat/cqrs-event-sourcing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00090 | $0.00341 |
| Opus 5 | $0.00045 | $0.00170 |
| Sonnet 5 | $0.00018 | $0.00068 |
| Haiku 4.5 | $0.00009 | $0.00034 |
Grade A, and why
cqrs-event-sourcing 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 8d 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.
What it actually says
CQRS & Event Sourcing Patterns
Patterns for implementing CQRS and Event Sourcing in distributed systems.
Quick Navigation
| Reference | Contents |
|---|---|
| references/command-side.md | Commands, command handlers, aggregate design |
| references/event-sourcing.md | Event store, aggregate reconstruction, snapshots, versioning |
| references/read-side.md | Queries, read models, event subscribers, eventual consistency |
| references/sagas-operations.md | Saga pattern, event replay, monitoring, disaster recovery |
Core Flow
User → Command → Handler → Event Store → Events → Event Bus
↓
Event Handlers → Read Models → User
When to Use
Use when an audit trail, independent read/write scaling, or multiple read-optimized views are needed. Avoid for simple CRUD with uniform load.
What ships with it
5 files 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.
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.
- 8d ago First seen · 38 lines · 90 tokens per session scan A a83e73fba989
cqrs-event-sourcing is a skill published in the GitHub repository ivegamsft/basecoat (4 stars, last pushed yesterday), licensed MIT. It adds 90 tokens to every session and 341 once invoked, about $0.0005 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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