Server Persistence Workflow Agent Skill

Plan, build, test, and diagnose server-side Swift persistence, database, ORM, model, migration, query, transaction, and repository work…

Context cost
2.9k tokensestimated from the bundle, loaded when it triggers
Bundle
1 file · 11.6 kBtext throughout, nothing executable
Licence
Apache-2.0the author’s own terms
Last change
—no release on file
Servers it uses
Noneruns standalone

What it does

Plan, build, test, and diagnose server-side Swift persistence, database, ORM, model, migration, query, transaction, and repository work for Vapor, Hummingbird, Fluent, and SwiftPM services.

What this skill changes about the agent has not been set out here as a list. Its SKILL.md, shown below, says it in the author’s own words.

databaseswift
Filed under

Databases

The skill itself

A skill is instructions the model reads, so you can see what you are getting: below is the start of its SKILL.md. The front matter loads with every session, the body loads when the skill triggers, and the whole file comes with the install.

SKILL.md11.6 kB · preview
--- name: persistence-workflow license: Apache-2.0 compatibility: Designed for Codex and compatible Agent Skills clients working with server-side Swift persistence in SwiftPM projects on macOS or Linux. metadata: owner: gaelic-ghost repo: socket category: server-side-swift-persistence allowed-tools: Read Bash(rg:*) Bash(git:*) Bash(swift:*) Bash(curl:*) ---
13# Server Persistence Workflow
14
15## SwiftData And SwiftUI Rule
16
17When a task combines SwiftData with SwiftUI, keep SwiftData directly coupled to SwiftUI through Apple's data-driven path: modelContainer, environment modelContext, @Query, SwiftData model objects, and bindings. Do not add repositories, stores, service layers, DTO mirrors, view-model caches, wrapper objects, or other abstraction layers between SwiftData and SwiftUI. If this skill is not the right owner for SwiftData-backed SwiftUI work, hand off to apple-dev-skills:swiftui-app-architecture-workflow instead of inventing an intermediate data layer.
18
19## Purpose
20
21Plan, build, modify, test, or diagnose database-backed behavior in a server-side Swift service.
22
23The practical decision is which persistence tool owns the data access, how models map to stored records, how schema changes are migrated, where query logic lives, how configuration reaches the database client, and which command proves the service can safely read or write data.
24
25## When To Use
26
27- Use this skill when adding or changing Fluent models, migrations, relations, queries, transactions, or database configuration.
28- Use this skill when a Vapor service needs database behavior that goes beyond route setup.
29- Use this skill when a Hummingbird service needs database access, repository boundaries, migration handoffs, or driver selection.
30- Use the canonical workspace service add-component entrypoint when the database choice is part of fresh service creation.
31- Use soto-aws-workflow for DynamoDB or other AWS persistence integrations so Soto dependency and client lifecycle ownership stay centralized.
This is a preview of SKILL.md. Download or install the skill to get the whole thing.
In the file
SKILL.md1,596 words
Files1
LicenceApache-2.0
Why you can read it

Nothing in a skill executes. The client loads the text and the model follows it, so a skill can be audited the way a runbook is — by reading it.

What it costs in context

Skills are not billed by the call. They are paid for in context: every token the instructions occupy is a token your code, your diff and your conversation cannot use. Here is what this one takes and when it takes it.

≈140
always loaded
The name and description, so the model knows the skill exists and when to reach for it.
2,760
on trigger
The instruction body, read only when the skill fires.
1.5%
of a 200k window
Ten skills this size would take about 15% of the window before you open a file.
050k100k150k200k context window

2.9k tokens, estimated from the bundle at four bytes to the token, held for the rest of the session once it triggers. Middling. Fine to keep on in a project where you use it weekly, worth unloading in one where you never do.

Servers bill, skills cost

A server charges by the month. A skill charges once per session, in context, and then keeps charging it for as long as the session lives.

Before and after

The same question, put to the same model twice: once as it comes, and once with these instructions loaded.

No worked example has been published for this skill yet.

The procedure it runs

The procedure has not been set out here step by step. It is in the body of its SKILL.md: the start of it is shown above, and the whole file comes with the install.

Prose, not code

These steps are written for a model to follow, not executed by a runtime. It can still be told to skip one, and it will say so when it does.

Servers it uses

None. This skill calls no MCP servers at all.

Everything it needs is in the instructions, so it works in a project with nothing connected — the model reads the file and changes how it works with what it can already reach.

Its SKILL.md asks for Bash, which can write files and reach the network alike, so what it touches is whatever the instructions themselves ask for — read them before you install it.

What it asks for
Writes filesnot declared
Network accessnot declared

The allowed-tools line of this skill’s own SKILL.md asks for Bash, which could do either, so neither is ruled out. A skill grants no permissions of its own — it can only ask for tools your client already has.

What it will not do

Every skill is narrow, and the useful ones say where they stop. These are the jobs this one is the wrong tool for.

What this skill is not for has not been published here. Nothing is implied by that: it is a section the author has not filled in.

What is in the bundle

1 file, 11.6 kB on disk. A bundle is text throughout: the instructions the model reads, plus the templates it fills in.

  • SKILL.md11.6 kB
What is not in it

No dependencies and nothing executable: a skill is text the agent reads, so the bundle is 1 file you can review in full before installing. The Apache-2.0 licence covers the templates and examples as well as the instructions.

Install

Installing copies the bundle into your project. Nothing runs at install time — the files sit on disk until the model reads them.

# Server Persistence Workflow · 2.9k tokens when loaded · macOS, Linux mkdir -p .claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/server-persistence-workflow/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/server-persistence-workflow" ] && { [ ! -e .claude/skills/server-persistence-workflow ] || { mv .claude/skills/server-persistence-workflow "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/server-persistence-workflow" .claude/skills/ && echo "Installed .claude/skills/server-persistence-workflow"
On Windows, or any OS with Node 20+
npx mcprush@latest skill add gaelic-ghost/server-persistence-workflow

Windows PowerShell says 'running scripts is disabled on this system'? Run Set-ExecutionPolicy -Scope CurrentUser RemoteSigned once, or type npx.cmd instead of npx (codex.cmd, gemini.cmd, grok.cmd likewise). PowerShell 7 needs neither. Writes to .claude/skills/server-persistence-workflow/ in the current project. For every project instead, run mkdir -p ~/.claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/server-persistence-workflow/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/server-persistence-workflow" ] && { [ ! -e ~/.claude/skills/server-persistence-workflow ] || { mv ~/.claude/skills/server-persistence-workflow "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/server-persistence-workflow" ~/.claude/skills/ && echo "Installed ~/.claude/skills/server-persistence-workflow" (macOS, Linux) — or add --global to the npx line. The curl line replaces .claude/skills/server-persistence-workflow/ only after the download succeeds, so files left there by another skill of the same name, or by an older release, do not mix in. A copy already there is moved aside, not deleted, and the line prints where. It appears as persistence-workflow in Gemini CLI, Codex, Copilot and Grok (its own name); Claude Code lists it by the folder name, server-persistence-workflow.

Which clients pick it up on their own

A skill is a folder of text. Most of these read a skills folder and pick it up without being told; the rest take the same folder another way — an upload in the app, a parameter on an API call — and then choose it by its description just the same.

Claude Code.claude/skills/
Claude DesktopCustomize › Skills
ChatGPTSkills › Create › Upload
Cursor.cursor/skills/
VS Code.github/skills/
Codex CLI.agents/skills/
Gemini CLI.gemini/skills/
Grok Build.grok/skills/
Microsoft CopilotSkills › Upload a skill
PerplexityComputer › Skills › Upload a skill
DeepSeek Harness.dsh/skills/
Zed.agents/skills/
Devin Desktop.devin/skills/
Windsurf (legacy).windsurf/skills/
OpenAI Agents SDKInstructions or sandbox Skills
HTTP / APIa request parameter
This release
Versionnot versioned
Publishedno release date on file
PriceFree
Referencegaelic-ghost/server-persistence-workflow

Versions

Its author publishes no version number, so there is nothing here to pin to: what you install is the folder as it stands today. Instructions change more often than APIs do — a skill can be rewritten entirely without anything it depends on moving.

Pinning

Nothing to pin to: this skill carries no version number of its own. What you install is what the folder holds on the day you install it.

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