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Agent skill

Memory

by gustavscirulis in gustavscirulis/snapgrid

Swift 6.2 InlineArray and Span types for zero-overhead memory access, fixed-size collections, and safe pointer alternatives.

Custom licenceAuto-check passedMobile

Install Memory

skills CLI
$ npx skills add gustavscirulis/snapgrid --skill memory -a claude-code

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

GitHub CLI
$ gh skill install gustavscirulis/snapgrid memory --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/gustavscirulis/snapgrid.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/skills/swift/memory .claude/skills/memory && 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
memory
GitHub stars
117
Used in
1 other repo
Token cost
~3k tokens
SKILL.md length
974 words
Files
1
Skills in repo
118
Repo updated
First seen
Licence
Custom licence

At a glance

Swift 6.2 InlineArray and Span types for zero-overhead memory access, fixed-size collections, and safe pointer alternatives.

  • Optimizing performance-critical code paths
  • SKILL.md covers When This Skill Activates, Decision Tree, API Availability and Top 5 Mistakes, plus 5 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Tasks that involve iOS development

What it does

Memory is an agent skill from gustavscirulis/snapgrid. Swift 6.2 InlineArray and Span types for zero-overhead memory access, fixed-size collections, and safe pointer alternatives. Use when optimizing performance-critical code paths.

Its SKILL.md is about 3k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Mobile, covering iOS development. It works with Swift. The repository describes itself as: SnapGrid is an open-source Mac app for collecting, organizing, and analyzing UI screenshots. It uses AI to automatically detect UI components and patterns, making it a powerful…

When your agent uses it

  • Optimizing performance-critical code paths
  • Tasks that involve iOS development

Example prompts

  • “/memory”

Requirements

  • Pre-approved tools (allowed-tools): Read, Glob, Grep

What it can do on your machine

Read from SKILL.md and the folder at commit eb7eaf4. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Read
    • Glob
    • Grep

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are swift).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Links to these hosts (documentation or services it may open):

    • developer.apple.com
    • github.com
    • swift.org

    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

Memory loads about 3k tokens when it runs. Until then it costs about 46 tokens; SKILL.md has 974 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~46
When it runs · the whole SKILL.md, loaded when a task matches
~3k

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

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 974 words (~2,963 tokens).

“Guidance for Swift 6.2's low-level memory types: InlineArray for fixed-size inline storage without heap allocation, and Span for safe, zero-cost access to contiguous memory. These replace common uses of UnsafeBufferPointer and hand-tuned tuple storage with compiler-checked alternatives.”

— opening of SKILL.md by gustavscirulis, Custom licence
name
memory
allowed-tools
Read, Glob, Grep

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .claude/skills/skills/swift/memory of gustavscirulis/snapgrid.

Open the folder on GitHubat commit eb7eaf4

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in gustavscirulis/snapgrid, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Memory 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.

Memory compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Memory this skillgustavscirulis/snapgrid1171 repos~3kAutomated safety check: PassCustom licence
Swift Concurrencydpearson2699/swift-ios-skills1.2k—~5kAutomated safety check: PassCustom licence
Swift Best PracticesHoangNguyen0403/agent-skills-standard571—~725Automated safety check: PassMIT
macOS Spm App PackagingDimillian/Skills4k5 repos~1.2kAutomated safety check: PassMIT
Swift Concurrency Protwostraws/Swift-Concurrency-Agent-Skill558—~1.4kAutomated safety check: PassMIT
Swiftui Expert SkillAFK-surf/OpenBridge4302 repos~3.9kAutomated safety check: PassMIT

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All 118 skills in this repo

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  • Market Research

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  • Account Deletion

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    Generates an Apple-compliant account deletion flow with multi-step confirmation UI, optional data export, configurable grace period, Keychain cleanup, and server-side deletion request.

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  • Alarmkit

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Works with

Categories

Questions about Memory

What does Memory do?

Swift 6.2 InlineArray and Span types for zero-overhead memory access, fixed-size collections, and safe pointer alternatives. Memory is an agent skill from gustavscirulis/snapgrid.2 InlineArray and Span types for zero-overhead memory access, fixed-size collections, and safe pointer alternatives.

When should I use Memory?

Memory fits situations like: optimizing performance-critical code paths; tasks that involve iOS development.

How do I install Memory in Claude Code?

Run `npx skills add gustavscirulis/snapgrid --skill memory -a claude-code`. Or copy the skill folder (.claude/skills/skills/swift/memory in gustavscirulis/snapgrid) into .claude/skills/memory in your project. Claude Code loads it when a task matches its description.

How do I install Memory in Codex?

Run `npx skills add gustavscirulis/snapgrid --skill memory -a codex`. Or copy the skill folder (.claude/skills/skills/swift/memory in gustavscirulis/snapgrid) into .agents/skills/memory in your project. Codex loads it when a task matches its description.

Can I use Memory 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 gustavscirulis/snapgrid --skill memory -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/memory, .gemini/skills/memory, .github/skills/memory and .opencode/skills/memory in your project.

What does Memory need to run?

SKILL.md names no scripts, command-line tools or credentials: Memory is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Glob, Grep.

Does Memory access the network?

SKILL.md names 3 domains. As links in the text: developer.apple.com, github.com and swift.org. This is read from the text; nothing was executed.

Is Memory 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 Memory use?

Memory has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Memory use?

About 3k tokens (SKILL.md is roughly 12k 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 Memory?

Skills that share tags, products or a category with Memory: Swift Concurrency (dpearson2699/swift-ios-skills, 1.2k stars), Swift Best Practices (HoangNguyen0403/agent-skills-standard, 571 stars), macOS Spm App Packaging (Dimillian/Skills, 4k stars) and Swift Concurrency Pro (twostraws/Swift-Concurrency-Agent-Skill, 558 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Memory?

gustavscirulis (a GitHub user) maintains it in gustavscirulis/snapgrid, which has 117 GitHub stars. The repository holds 118 skills in this directory. The repository was last updated on April 30, 2026.

Source: gustavscirulis/snapgrid on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.