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Agent skill

Event Sourcing Architect

by davila7 in davila7/claude-code-templates

Expert in event sourcing, CQRS, and event-driven architecture patterns.

MITAuto-check passedBackend & APIs

Install Event Sourcing Architect

skills CLI
$ npx skills add davila7/claude-code-templates --skill event-sourcing-architect -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install davila7/claude-code-templates event-sourcing-architect --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/davila7/claude-code-templates.git skills-src && mkdir -p .claude/skills && cp -r skills-src/cli-tool/components/skills/development/event-sourcing-architect .claude/skills/event-sourcing-architect && rm -rf skills-src

Use ~/.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/

Facts

Skill name
event-sourcing-architect
GitHub stars
33k
Used in
4 other repos
Token cost
~659 tokens
SKILL.md length
275 words
Files
1
Skills in repo
479
Repo updated
First seen
Licence
MIT

At a glance

Expert in event sourcing, CQRS, and event-driven architecture patterns.

  • Works in 7 steps: Identify aggregate boundaries and event… → Design events as immutable facts → Implement command handlers and event… → …
  • Tasks that involve Event-driven systems
  • SKILL.md covers Capabilities, Use this skill when, Do not use this skill when and Instructions, plus 3 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Event Sourcing Architect is an agent skill from davila7/claude-code-templates. 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 trail requirements, or complex domain modeling with temporal queries.

Its SKILL.md is about 660 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Backend & APIs, covering Event-driven systems. The repository describes itself as: CLI tool for configuring and monitoring Claude Code. The licence is MIT.

When your agent uses it

  • Tasks that involve Event-driven systems

Example prompts

  • “/event-sourcing-architect”

Workflow steps

7 steps, taken from the first numbered list in SKILL.md.

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

What it can do on your machine

Read from SKILL.md and the folder at commit 79182c5. 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

    No URLs in SKILL.md.

    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.

Context cost

Event Sourcing Architect loads about 659 tokens when it runs. Until then it costs about 80 tokens; SKILL.md has 275 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~80
When it runs · the whole SKILL.md, loaded when a task matches
~659

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 davila7/claude-code-templates at commit 79182c5, republished under its MIT licence (© davila7). 275 words, ~659 tokens.

Download SKILL.mdSave it as .claude/skills/event-sourcing-architect/SKILL.md (or your agent's skills folder).
name
event-sourcing-architect
description
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 trail requirements, or complex domain modeling with temporal queries.
risk
unknown
source
community
date_added
2026-02-27

Event Sourcing Architect

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 trail requirements, or complex domain modeling with temporal queries.

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

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

Safety

  • Never mutate or delete committed events in production.
  • Rebuild projections in staging before running in production.

Best Practices

  • Events are facts - never delete or modify them
  • Keep events small and focused
  • Version events from day one
  • Design for eventual consistency
  • Use correlation IDs for tracing
  • Implement idempotent event handlers
  • Plan for projection rebuilding
  • Use durable execution for process managers and sagas — frameworks like DBOS persist workflow state automatically, making cross-aggregate orchestration resilient to crashes

Works well with: saga-orchestration, architecture-patterns, dbos-*

© davila7, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in cli-tool/components/skills/development/event-sourcing-architect of davila7/claude-code-templates.

Open the folder on GitHubat commit 79182c5

Used in 4 other repositories

We found 17 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 4 other GitHub owners. This page covers the copy in davila7/claude-code-templates, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Event Sourcing Architect 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.

Event Sourcing Architect compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Event Sourcing Architect this skilldavila7/claude-code-templates33k4 repos~659Automated safety check: PassMIT
Stripe Projectsfossasia/eventyay1.7k5 repos~2kAutomated safety check: NotesApache-2.0
MQTTX CLIemqx/MQTTX5.1k—~1.9kAutomated safety check: PassApache-2.0
AWS Serverless Edazxkane/aws-skills3674 repos~3.2kAutomated safety check: PassMIT
Windmill Trigger Type Checklistwindmill-labs/windmill18k—~4.7kAutomated safety check: PassCustom licence
FoundatioFoundatioFx/Foundatio2.1k—~3.9kAutomated safety check: PassApache-2.0

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Categories

Questions about Event Sourcing Architect

What does Event Sourcing Architect do?

Expert in event sourcing, CQRS, and event-driven architecture patterns. Event Sourcing Architect is an agent skill from davila7/claude-code-templates. Expert in event sourcing, CQRS, and event-driven architecture patterns.

When should I use Event Sourcing Architect?

Event Sourcing Architect fits situations like: tasks that involve Event-driven systems.

How do I install Event Sourcing Architect in Claude Code?

Run `npx skills add davila7/claude-code-templates --skill event-sourcing-architect -a claude-code`. Or copy the skill folder (cli-tool/components/skills/development/event-sourcing-architect in davila7/claude-code-templates) into .claude/skills/event-sourcing-architect in your project. Claude Code loads it when a task matches its description.

How do I install Event Sourcing Architect in Codex?

Run `npx skills add davila7/claude-code-templates --skill event-sourcing-architect -a codex`. Or copy the skill folder (cli-tool/components/skills/development/event-sourcing-architect in davila7/claude-code-templates) into .agents/skills/event-sourcing-architect in your project. Codex loads it when a task matches its description.

Can I use Event Sourcing Architect 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 davila7/claude-code-templates --skill event-sourcing-architect -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/event-sourcing-architect, .gemini/skills/event-sourcing-architect, .github/skills/event-sourcing-architect and .opencode/skills/event-sourcing-architect in your project.

What does Event Sourcing Architect need to run?

SKILL.md names no scripts, command-line tools or credentials: Event Sourcing Architect is instructions for the agent only.

Does Event Sourcing Architect access the network?

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.

Is Event Sourcing Architect 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 Event Sourcing Architect use?

Event Sourcing Architect is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Event Sourcing Architect use?

About 659 tokens (SKILL.md is roughly 2.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Event Sourcing Architect?

Skills that share tags, products or a category with Event Sourcing Architect: Stripe Projects (fossasia/eventyay, 1.7k stars), MQTTX CLI (emqx/MQTTX, 5.1k stars), AWS Serverless Eda (zxkane/aws-skills, 367 stars) and Windmill Trigger Type Checklist (windmill-labs/windmill, 18k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Event Sourcing Architect?

davila7 (a GitHub user) maintains it in davila7/claude-code-templates, which has 32,552 GitHub stars. The repository holds 479 skills in this directory. The repository was last updated on October 11, 2026.

Source: davila7/claude-code-templates on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.