Bgworker And Extensions

Q: What is a Claude Code skill and how does the Bgworker And Extensions 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. Bgworker And Extensions is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Engineering · Sub-category: backend · Last updated: 2026-07-10

Register a PostgreSQL background worker or layer extension hooks on _PG_init — covers RegisterBackgroundWorker (static at shared_preload_libraries time) vs RegisterDynamicBackgroundWorker (runtime), the BackgroundWorker struct (bgw_flags BGWORKER_SHMEM_ACCESS / BGWORKER_BACKEND_DATABASE_CONNECTION, bgw_start_time, bgw_restart_time, bgw_main_arg, bgw_notify_pid), BackgroundWorkerInitializeConnection, the signal handler skeleton (SignalHandlerForConfigReload + die), the WaitLatch idiom with WL_EXIT_ON_PM_DEATH, and the GetBackgroundWorkerPid / WaitForBackgroundWorkerStartup / TerminateBackgroundWorker lifecycle calls. Use whenever a PG patch or extension registers a bgworker, writes a worker_main function, debugs a worker that fails to start or restart, layers ProcessUtility_hook / planner_hook / ExecutorStart_hook on _PG_init, or coordinates bgw_notify_pid signaling. Skip for Celery / Sidekiq / RQ / Resque / Kafka-consumer worker pools, AWS Lambda / Cloud Run background jobs, Cron / systemd timers, OS-level daemons, and Kubernetes Jobs / CronJobs.

Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

This is the procedural cookbook for registering and writing PostgreSQL background workers and for layering extension hooks on the postmaster lifecycle. For the conceptual model see knowledge/idioms/bgworker-and-parallel.md.

What this skill does

Bgworker And Extensions is a community-contributed Claude Code skill in the backend sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/bgworker-and-extensions/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use whenever a PG patch or extension registers a bgworker, writes a worker_main function, debugs a worker that fails to start or restart, layers ProcessUtility_hook / planner_hook / ExecutorStart_hook on _PG_init, or coordinates bgw_notify_pid signaling. Skip for Celery / Sidekiq / RQ / Resque / Kafka-consumer worker pools, AWS Lambda / Cloud Run background jobs, Cron / systemd timers, OS-level daemons, and Kubernetes Jobs / CronJobs.

Who uses this skill

The Bgworker And Extensions 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 158,000+ 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/bgworker-and-extensions
curl -L https://claudskills.com/skills/bgworker-and-extensions/SKILL.md \
  -o ~/.claude/skills/bgworker-and-extensions/SKILL.md

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

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

📱 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.

See pricing → Download desktop app

Frequently asked questions

How do I install the Bgworker And Extensions Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/bgworker-and-extensions/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Bgworker And Extensions skill do?

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 Bgworker And Extensions skill?

Use Bgworker And Extensions when your Claude Code task falls under the Engineering category — specifically in the backend 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 Bgworker And Extensions" or describe the task and let Claude pick). Browse related skills at /category/engineering/.

What is a Claude Code skill and how does the Bgworker And Extensions 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. Bgworker And Extensions 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

Source: https://github.com/matejformanek/postgres-claude/blob/HEAD/.claude/skills/bgworker-and-extensions/SKILL.md
License: PostgreSQL
Author: matejformanek
Website: https://github.com/matejformanek/postgres-claude

Cite this skill

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

APA

matejformanek. (2026). Bgworker And Extensions [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/bgworker-and-extensions/

BibTeX

@misc{bgworker-and-extensions-2026,
  author    = {matejformanek},
  title     = {Bgworker And Extensions [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/bgworker-and-extensions/}
}

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Badge

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Security scan

Grade A · scanned 2026-07-23 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
✓ Reverse shell
✓ Credentials
✓ Execution
✓ Filesystem
✓ Persistence
✓ Obfuscation
✓ Network

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/bgworker-and-extensions/#security)

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