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Event Sourcing Architect · dokhacgiakhoa | DecimalAI

codingby dokhacgiakhoa

Event Sourcing Architect

dokhacgiakhoa/event-sourcing-architect

Source dokhacgiakhoa/agent-skills-4-vibe-coding-cli ↗License NOASSERTION

Expert in event sourcing, CQRS, and event-driven architecture patterns. Masters event store design, projection building, saga orchestration, and eventual consistency patterns. Use PROACTIVELY for event-sourced systems, audit trails, or temporal queries.

SkillScore100Maintained

Automatic

Coding pack

Last verified 8/29/2026

What it changes

Passed 22 of 22 test cases with the skill, and 20 of 22 without it.

Without skill91%

With skill100%

Checks it passed that the model alone missed

Specifies an event schema versioning strategy
Recommends replaying historical event streams from the event store to rebuild projections

2 fixed20 passed either way0 still failing0 broke

Pass-rate lift: +9 pp
Tokens: +12%
Agent turns: 0%
Response time: +1%

Model gemini-3.6-flashMeasured 8/29/2026v122 of 22 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/dokhacgiakhoa-event-sourcing-architect/SKILL.md https://app.decimal.ai/s/dokhacgiakhoa-event-sourcing-architect/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add dokhacgiakhoa-event-sourcing-architect, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/dokhacgiakhoa-event-sourcing-architect/ and pins it in .decimal/skills.lock

decimalai skills add dokhacgiakhoa-event-sourcing-architect

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/dokhacgiakhoa-event-sourcing-architect/SKILL.md https://app.decimal.ai/s/dokhacgiakhoa-event-sourcing-architect/SKILL.md

Raw file: /s/dokhacgiakhoa-event-sourcing-architect/SKILL.md ↗ · machine-readable summary at /s/dokhacgiakhoa-event-sourcing-architect.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 2 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 2

Prompt

We are refactoring our core e-commerce ordering engine to use event sourcing and CQRS because we need full historical tracking and high-throughput read models. Could you provide a comprehensive architectural design blueprint for this? Please structure your response to cover aggregate boundaries, immutable event definitions, command handling flow, read-model projections, cross-aggregate saga workflows, snapshot strategies for aging streams, and event schema versioning techniques.

What was checked, without and with the skill
Checked	Without skill	With skill
Defines aggregate boundaries and event stream structure for the order lifecycle	Passed	Passed
Includes saga or process manager orchestration for cross-aggregate execution	Passed	Passed
Details snapshotting strategies for long-lived streams	Passed	Passed
Specifies an event schema versioning strategy	Missed	Passed

case-01 · gemini-3.6-flash · 8/29/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md53 linessingle file

Event Sourcing Architect

Capabilities

Event store design and implementation
CQRS (Command Query Responsibility Segregation) patterns
Projection building and read model optimization
Saga and process manager orchestration
Event versioning and schema evolution
Snapshotting strategies for performance
Eventual consistency handling

Use this skill when

Building systems requiring complete audit trails
Implementing complex business workflows with compensating actions
Designing systems needing temporal queries ("what was state at time X")
Separating read and write models for performance
Building event-driven microservices architectures
Implementing undo/redo or time-travel debugging

Do not use this skill when

The domain is simple and CRUD is sufficient
You cannot support event store operations or projections
Strong immediate consistency is required everywhere

Instructions

Identify aggregate boundaries and event streams
Design events as immutable facts
Implement command handlers and event application
Build projections for query requirements
Design saga/process managers for cross-aggregate workflows
Implement snapshotting for long-lived aggregates
Set up event versioning strategy

Safety

Track record

Benchmark

22 / 22

test cases passed, vs 20 / 22 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/10/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

dokhacgiakhoa / agent-skills-4-vibe-coding-cli

.agent/skills/event-sourcing-architect/SKILL.md

View on GitHub ↗

License NOASSERTIONImported 8/10/2026Version v1

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What's inside

Event Sourcing Architect

Capabilities

Use this skill when

Do not use this skill when

Instructions

Safety

Track record

Benchmark

Adoption

SkillSafety

Source

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