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Outbox Pattern Implementation

Category: Engineering  ·  Sub-category: mobile  ·  Last updated:
type:integration
Use when you need to publish a message to Kafka / RabbitMQ / SNS atomically with a database commit, when fixing the dual-write hazard between DB and broker, deciding between polling-publisher and CDC (Debezium) relay, designing the outbox schema, handling at-least-once / idempotency on the consumer, or pruning a high-volume outbox table. Triggers: dual write, "we updated the DB but the event never published", outbox/inbox pattern, Debezium connector, EventRouter SMT, aggregate_type / aggregate_id, at-least-once with idempotent consumer, outbox table partitioning. NOT for receiver-side webhook handling, sagas/Temporal as orchestration, log-based event sourcing as the source of truth, or Kafka producer tuning generally.

About this skill (catalog notes)

Outbox Pattern Implementation includes explicit scope boundaries (an explicit 'when not to use' or 'out of scope' section); pricing or quota commentary; 14 code blocks for direct copy-paste. At roughly 2,261 words the SKILL.md is on the longer end of the catalog distribution.

Original author
curiositech
Indexed lastmod
Catalog position
Engineering · mobile
Indexed related skills
10

How Outbox Pattern Implementation fits the catalog

Outbox Pattern Implementation sits in the Engineering category under the mobile sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

The outbox pattern is the answer to one specific failure mode: a service updates its database AND publishes a message, and only one of them succeeds. Without the pattern, the database and the broker silently disagree forever; with it, the message publish becomes part of the same transaction as the row write, and a separate relay propagates it.

1. Outbox table.   Application writes business rows AND a row to outbox in ONE transaction.
2. Relay.          Separate process reads outbox, publishes to broker, marks row as published (or deletes it).

What this skill does

Outbox Pattern Implementation is a community-contributed Claude Code skill in the mobile sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/outbox-pattern-implementation/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when you need to publish a message to Kafka / RabbitMQ / SNS atomically with a database commit, when fixing the dual-write hazard between DB and broker, deciding between polling-publisher and CDC (Debezium) relay, designing the outbox schema, handling at-least-once / idempotency on the consumer, or pruning a high-volume outbox table. Triggers: dual write, "we updated the DB but the event never published", outbox/inbox pattern, Debezium connector, EventRouter SMT, aggregate_type / aggregate_id, at-least-once with idempotent consumer, outbox table partitioning.

Who uses this skill

The Outbox Pattern Implementation Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 94,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/outbox-pattern-implementation
curl -L https://claudskills.com/skills/outbox-pattern-implementation/SKILL.md \
  -o ~/.claude/skills/outbox-pattern-implementation/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/outbox-pattern-implementation/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/outbox-pattern-implementation/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\outbox-pattern-implementation\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Telegram

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

Frequently asked questions

How do I install the Outbox Pattern Implementation Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/outbox-pattern-implementation/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Outbox Pattern Implementation skill do?
Use when you need to publish a message to Kafka / RabbitMQ / SNS atomically with a database commit, when fixing the dual-write hazard between DB and broker, deciding between polling-publisher and CDC (Debezium) relay, designing the outbox schema, handling at-least-once / idempotency on the consumer, or pruning a high-volume outbox table. Triggers: dual write, "we updated the DB but the event never published", outbox/inbox pattern, Debezium connector, EventRouter SMT, aggregate_type / aggregate_id, at-least-once with idempotent consumer, outbox table partitioning. NOT for receiver-side webhook handling, sagas/Temporal as orchestration, log-based event sourcing as the source of truth, or Kafka producer tuning generally.
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Outbox Pattern Implementation skill?
Use Outbox Pattern Implementation when your Claude Code task falls under the Engineering category — specifically in the mobile area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Outbox Pattern Implementation" or describe the task and let Claude pick). Browse related skills at /category/engineering/.
What is a Claude Code skill and how does the Outbox Pattern Implementation skill fit in?
A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Outbox Pattern Implementation is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA
curiositech. (2026). Outbox Pattern Implementation [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/outbox-pattern-implementation/
BibTeX
@misc{outbox-pattern-implementation-2026,
  author    = {curiositech},
  title     = {Outbox Pattern Implementation [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/outbox-pattern-implementation/}
}

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