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Agent skill

Nestjs Notification

by HoangNguyen0403 in HoangNguyen0403/agent-skills-standard

Build dual-write notification services with database persistence and FCM push delivery in NestJS.

MITAuto-check passedBackend & APIs

Install Nestjs Notification

skills CLI
$ npx skills add HoangNguyen0403/agent-skills-standard --skill nestjs-notification -a claude-code

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

GitHub CLI
$ gh skill install HoangNguyen0403/agent-skills-standard nestjs-notification --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/HoangNguyen0403/agent-skills-standard.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/nestjs/nestjs-notification .claude/skills/nestjs-notification && 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
nestjs-notification
GitHub stars
572
Token cost
~520 tokens
SKILL.md length
203 words
Files
5 (incl. references)
Skills in repo
211
Repo updated
First seen
Licence
MIT

At a glance

Build dual-write notification services with database persistence and FCM push delivery in NestJS.

  • Works in 4 steps: Save to database — Persist notification… → Check FCM token — Verify recipient valid… → Send push — Call FCM inside try/catch;… → …
  • Creating notification entities
  • SKILL.md covers Priority: P0 (CRITICAL), Workflow: Send Notification, Dual-Write Service Example and Structure, plus 3 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Nestjs Notification is an agent skill from HoangNguyen0403/agent-skills-standard. Build dual-write notification services with database persistence and FCM push delivery in NestJS. Use when creating notification entities, sending push via FCM, or implementing in-app notification feeds.

Its SKILL.md is about 520 tokens, which your agent loads only when the skill is triggered. The skill folder holds 6 other files, including reference files (for example `evals/evals.json`, `references/implementation.md` and `references/service.md`).

It sits in Backend & APIs. It works with NestJS. The repository describes itself as: A collection of Agent Skills Standard and Best Practice for Programming Languages, Frameworks that help our AI Agent follow best practies on frameworks and programming laguages. The licence is MIT.

When your agent uses it

  • Creating notification entities
  • Sending push via FCM
  • Implementing in-app notification feeds

Example prompts

  • “/nestjs-notification”

Workflow steps

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

  1. Save to database — Persist notification entity with type enum and metadata.
  2. Check FCM token — Verify recipient valid fcmToken; skip push if missing.
  3. Send push — Call FCM inside try/catch; never let FCM failure block request.
  4. Serialize data — Convert Dates to ISO strings; keep FCM data payload flat (IDs only).

What it can do on your machine

Read from SKILL.md and the folder at commit b529c2d. 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

Nestjs Notification loads about 520 tokens when it runs, and up to ~1.7k if it reads all its reference files. Until then it costs about 56 tokens; SKILL.md has 203 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~56
When it runs · the whole SKILL.md, loaded when a task matches
~520
With references · SKILL.md plus every file in references/, read only if the agent opens them
~1.7k

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 HoangNguyen0403/agent-skills-standard at commit b529c2d, republished under its MIT licence (© HoangNguyen0403). 203 words, ~520 tokens.

Download SKILL.mdSave it as .claude/skills/nestjs-notification/SKILL.md (or your agent's skills folder). This skill also uses 4 other files; get the full folder from GitHub.
name
nestjs-notification
description
Build dual-write notification services with database persistence and FCM push delivery in NestJS. Use when creating notification entities, sending push via FCM, or implementing in-app notification feeds.

NestJS Notification Architecture

Priority: P0 (CRITICAL)

Implement "Dual-Write" notification system: persist to Database (In-App) and send via FCM (Push).

Workflow: Send Notification

  1. Save to database — Persist notification entity with type enum and metadata.
  2. Check FCM token — Verify recipient valid fcmToken; skip push if missing.
  3. Send push — Call FCM inside try/catch; never let FCM failure block request.
  4. Serialize data — Convert Dates to ISO strings; keep FCM data payload flat (IDs only).

Dual-Write Service Example

See implementation examples

Structure

See implementation examples

Implementation Guidelines

  • Use Dual-Write: Save to DB first, then attempt FCM. Catch FCM errors so they don't block logic.
  • Define Granular Types: Use NotificationType Enum (e.g., APPOINTMENT_REMINDER) for frontend icon/color logic.
  • Stringify Metadata: Store routing data (IDs) as JSON string in DB, but Map to string-only Key-Values for FCM data.
  • Handle Tokens: Check for fcmToken existence before sending. Fail gracefully if missing.
  • Serialize Dates: Convert Dates to ISO strings before sending to FCM.

Anti-Patterns

  • No Generic Types: Avoid type: string. Always use Enum.
  • No Blocking FCM: Never await FCM without try/catch. It shouldn't crash request.
  • No Complex Data in Push: Keep FCM data payload flat and minimal (IDs only). Fetch details on open.

References

© HoangNguyen0403, 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 4 other files (references) in skills/nestjs/nestjs-notification of HoangNguyen0403/agent-skills-standard.

  • SKILL.md
  • evals/evals.json
  • references/implementation.md
  • references/service.md
  • references/types.md

Open the folder on GitHubat commit b529c2d

Compare with similar skills

Nestjs Notification 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.

Nestjs Notification compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Nestjs Notification this skillHoangNguyen0403/agent-skills-standard572—~520Automated safety check: PassMIT
Nestjs Best Practicesrolling-scopes/rsschool-app10k6 repos~1.2kAutomated safety check: PassMIT
Twenty Syncable Entity Validationtwentyhq/twenty58k—~3.3kAutomated safety check: PassCustom licence
Nestjs Trpctrycompai/crm11k—~2.8kAutomated safety check: PassMIT
Twenty Syncable Entity Wiringtwentyhq/twenty58k—~2.9kAutomated safety check: PassCustom licence
Backendredis/RedisInsight8.9k—~1.6kAutomated safety check: PassCustom licence

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Works with

Categories

Questions about Nestjs Notification

What does Nestjs Notification do?

Build dual-write notification services with database persistence and FCM push delivery in NestJS. Nestjs Notification is an agent skill from HoangNguyen0403/agent-skills-standard. Build dual-write notification services with database persistence and FCM push delivery in NestJS.

When should I use Nestjs Notification?

Nestjs Notification fits situations like: creating notification entities; sending push via FCM; implementing in-app notification feeds.

How do I install Nestjs Notification in Claude Code?

Run `npx skills add HoangNguyen0403/agent-skills-standard --skill nestjs-notification -a claude-code`. Or copy the skill folder (skills/nestjs/nestjs-notification in HoangNguyen0403/agent-skills-standard) into .claude/skills/nestjs-notification in your project. Claude Code loads it when a task matches its description.

How do I install Nestjs Notification in Codex?

Run `npx skills add HoangNguyen0403/agent-skills-standard --skill nestjs-notification -a codex`. Or copy the skill folder (skills/nestjs/nestjs-notification in HoangNguyen0403/agent-skills-standard) into .agents/skills/nestjs-notification in your project. Codex loads it when a task matches its description.

Can I use Nestjs Notification 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 HoangNguyen0403/agent-skills-standard --skill nestjs-notification -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/nestjs-notification, .gemini/skills/nestjs-notification, .github/skills/nestjs-notification and .opencode/skills/nestjs-notification in your project.

What does Nestjs Notification need to run?

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

Does Nestjs Notification 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 Nestjs Notification 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 Nestjs Notification use?

Nestjs Notification 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 Nestjs Notification use?

About 520 tokens (SKILL.md is roughly 2.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1.1k tokens, read only when the agent opens those files.

What are the alternatives to Nestjs Notification?

Skills that share tags, products or a category with Nestjs Notification: Nestjs Best Practices (rolling-scopes/rsschool-app, 10k stars), Twenty Syncable Entity Validation (twentyhq/twenty, 58k stars), Nestjs Trpc (trycompai/crm, 11k stars) and Twenty Syncable Entity Wiring (twentyhq/twenty, 58k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Nestjs Notification?

HoangNguyen0403 (a GitHub user) maintains it in HoangNguyen0403/agent-skills-standard, which has 572 GitHub stars. The repository holds 211 skills in this directory. The repository was last updated on October 9, 2026.

Source: HoangNguyen0403/agent-skills-standard on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.