Agent skill

Event Driven Messaging

by rrezartprebreza in rrezartprebreza/spring-boot-skills

A skill your agent uses when implementing Kafka, RabbitMQ, Pulsar, or JMS producers and consumers in Spring Boot 3.

MITAuto-check passedBackend & APIs

Install Event Driven Messaging

skills CLI
$ npx skills add rrezartprebreza/spring-boot-skills --skill event-driven-messaging -a claude-code

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

GitHub CLI
$ gh skill install rrezartprebreza/spring-boot-skills event-driven-messaging --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/rrezartprebreza/spring-boot-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/spring-boot-3/event-driven-messaging .claude/skills/event-driven-messaging && 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-driven-messaging
GitHub stars
301
Token cost
~556 tokens
SKILL.md length
244 words
Files
4
Skills in repo
51
Repo updated
First seen
Licence
MIT

At a glance

A skill your agent uses when implementing Kafka, RabbitMQ, Pulsar, or JMS producers and consumers in Spring Boot 3.

  • Implementing Kafka
  • SKILL.md covers Event contract, Producer rules, Consumer rules and Testing, plus 2 more sections
  • Runs Java scripts from its folder
  • JMS producers and consumers in Spring Boot 3

What it does

Event Driven Messaging is an agent skill from rrezartprebreza/spring-boot-skills. Use when implementing Kafka, RabbitMQ, Pulsar, or JMS producers and consumers in Spring Boot 3. Covers event contracts, idempotency, retries, dead-letter handling, ordering, and outbox delivery.

Its SKILL.md is about 560 tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files (for example `agents/openai.yaml`).

It sits in Backend & APIs, covering Event-driven systems and Backend development. It works with Spring Boot and Apache Kafka. The repository describes itself as: Production-grade Claude Code and Codex skills for Spring Boot developers. The licence is MIT.

When your agent uses it

  • Implementing Kafka
  • JMS producers and consumers in Spring Boot 3

Example prompts

  • “/event-driven-messaging”

What it can do on your machine

Read from SKILL.md and the folder at commit f0c06a0. 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

    Ships script files (Java), which the agent can run.

    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 Driven Messaging loads about 556 tokens when it runs. Until then it costs about 54 tokens; SKILL.md has 244 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~54
When it runs · the whole SKILL.md, loaded when a task matches
~556

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 rrezartprebreza/spring-boot-skills at commit f0c06a0, republished under its MIT licence (© rrezartprebreza). 244 words, ~556 tokens.

Download SKILL.mdSave it as .claude/skills/event-driven-messaging/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.
name
event-driven-messaging
description
Use when implementing Kafka, RabbitMQ, Pulsar, or JMS producers and consumers in Spring Boot 3. Covers event contracts, idempotency, retries, dead-letter handling, ordering, and outbox delivery.

Event-Driven Messaging

Design for at-least-once delivery unless the complete system proves stronger semantics.

Event contract

  • Use an immutable event envelope with eventId, eventType, occurredAt, schemaVersion, and payload.
  • Treat published schemas as APIs. Add fields compatibly and never silently change meaning.
  • Put correlation and causation IDs in headers or the envelope.
  • Do not publish JPA entities or framework-specific serialization shapes.

Producer rules

  • Publish only after the originating state change is durable.
  • Use a transactional outbox when database state and broker publication must agree.
  • Use deterministic partition keys when per-aggregate ordering matters.
  • Configure delivery timeout and acknowledgements explicitly.

Consumer rules

  • Make handlers idempotent with a durable processed-event record or naturally idempotent write.
  • Keep the transaction boundary around the state change and idempotency marker.
  • Classify transient and permanent failures before configuring retries.
  • Bound retries with backoff, then route poison messages to a dead-letter destination.
  • Preserve the original event, failure reason, and attempt count for replay.

Testing

  • Test serialization compatibility and handler idempotency.
  • Use Testcontainers for broker integration tests.
  • Test duplicate, reordered, delayed, and poison messages.

Examples

  • See examples/good-consumer.java and examples/bad-consumer.java.

Gotchas

  • Agent assumes exactly-once delivery because the broker supports transactions - end-to-end side effects still need idempotency.
  • Agent retries validation failures forever - dead-letter permanent failures promptly.
  • Agent publishes inside a database transaction without an outbox - a crash can split state and event delivery.
  • Agent uses a random partition key - ordering for one aggregate is then lost.
  • Agent deserializes directly into a JPA entity - use a versioned event contract.

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

Files

SKILL.md and 3 other files in skills/spring-boot-3/event-driven-messaging of rrezartprebreza/spring-boot-skills.

  • SKILL.md
  • agents/openai.yaml
  • examples/bad-consumer.java
  • examples/good-consumer.java

Open the folder on GitHubat commit f0c06a0

Compare with similar skills

Event Driven Messaging 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 Driven Messaging compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Event Driven Messaging this skillrrezartprebreza/spring-boot-skills301—~556Automated safety check: PassMIT
Kafka ConfigurationAmplicode/spring-skills128—~4kAutomated safety check: PassNone
314 Frameworks Spring Kafkajabrena/plinth447—~561Automated safety check: PassApache-2.0
323 Frameworks Spring Boot Testing Acceptance Testsjabrena/plinth447—~1.2kAutomated safety check: PassApache-2.0
Spring Boot Event Driven Patternsgiuseppe-trisciuoglio/developer-kit357—~2.3kAutomated safety check: NotesMIT
Spring Boot Saga Patterngiuseppe-trisciuoglio/developer-kit357—~2.5kAutomated safety check: NotesMIT

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  • Kafka Configuration

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  • A skill your agent uses when you need to design or implement Kafka messaging in Spring Boot — including topic design, producer/consumer implementation, JSON serialization with Boot factory…

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Categories

Questions about Event Driven Messaging

What does Event Driven Messaging do?

A skill your agent uses when implementing Kafka, RabbitMQ, Pulsar, or JMS producers and consumers in Spring Boot 3. Event Driven Messaging is an agent skill from rrezartprebreza/spring-boot-skills. Use when implementing Kafka, RabbitMQ, Pulsar, or JMS producers and consumers in Spring Boot 3.

When should I use Event Driven Messaging?

Event Driven Messaging fits situations like: implementing Kafka; JMS producers and consumers in Spring Boot 3.

How do I install Event Driven Messaging in Claude Code?

Run `npx skills add rrezartprebreza/spring-boot-skills --skill event-driven-messaging -a claude-code`. Or copy the skill folder (skills/spring-boot-3/event-driven-messaging in rrezartprebreza/spring-boot-skills) into .claude/skills/event-driven-messaging in your project. Claude Code loads it when a task matches its description.

How do I install Event Driven Messaging in Codex?

Run `npx skills add rrezartprebreza/spring-boot-skills --skill event-driven-messaging -a codex`. Or copy the skill folder (skills/spring-boot-3/event-driven-messaging in rrezartprebreza/spring-boot-skills) into .agents/skills/event-driven-messaging in your project. Codex loads it when a task matches its description.

Can I use Event Driven Messaging 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 rrezartprebreza/spring-boot-skills --skill event-driven-messaging -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-driven-messaging, .gemini/skills/event-driven-messaging, .github/skills/event-driven-messaging and .opencode/skills/event-driven-messaging in your project.

What does Event Driven Messaging need to run?

Going by SKILL.md and its folder, Event Driven Messaging needs Java for the scripts in its folder.

Does Event Driven Messaging 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 Driven Messaging 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 Driven Messaging use?

Event Driven Messaging 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 Driven Messaging use?

About 556 tokens (SKILL.md is roughly 2.2k 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 Driven Messaging?

Skills that share tags, products or a category with Event Driven Messaging: Kafka Configuration (Amplicode/spring-skills, 128 stars), 314 Frameworks Spring Kafka (jabrena/plinth, 447 stars), 323 Frameworks Spring Boot Testing Acceptance Tests (jabrena/plinth, 447 stars) and Spring Boot Event Driven Patterns (giuseppe-trisciuoglio/developer-kit, 357 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Event Driven Messaging?

rrezartprebreza (a GitHub user) maintains it in rrezartprebreza/spring-boot-skills, which has 301 GitHub stars. The repository holds 51 skills in this directory. The repository was last updated on September 21, 2026.

Source: rrezartprebreza/spring-boot-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.