What is performance-patterns?

Guidance for making Apple Mail data operations faster when an agent accesses Mail.app through MCP, a standard way for software tools to exchange data.

Use it when optimizing Mail.app searches, adding filters, changing data-fetching code, or investigating slow operations.

It helps avoid slow AppleScript calls, inefficient filters, and repeated requests when reading mail.

How wylieswanson/apple-mail-pz-mcp configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to wylieswanson/apple-mail-pz-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/wylieswanson/apple-mail-pz-mcp/main/.claude/skills/performance-patterns/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/wylieswanson/apple-mail-pz-mcp

Made for: Claude Code.

Or install apple-mail-pz, the plugin that ships this one along with the rest of its 5 skills, 1 command, 3 hooks, 1 MCP server.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/wylieswanson/apple-mail-pz-mcp/performance-patterns/github.svg)](https://agentmods.dev/skills/wylieswanson/apple-mail-pz-mcp/performance-patterns)

Your own site

<a href="https://agentmods.dev/skills/wylieswanson/apple-mail-pz-mcp/performance-patterns"><img src="https://agentmods.dev/badge/skills/wylieswanson/apple-mail-pz-mcp/performance-patterns/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/wylieswanson/apple-mail-pz-mcp/performance-patterns"><img src="https://agentmods.dev/badge/skills/wylieswanson/apple-mail-pz-mcp/performance-patterns.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 50 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,421 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin unknown No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00050	$0.01421
Opus 5.5	$0.00020	$0.00568
Sonnet 5.5	$0.00010	$0.00284
Haiku 4.5	$0.00005	$0.00142

Measured 1mo ago against content hash 0ec7e6b6b574, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

performance-patterns scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/skills/performance-patterns/SKILL.md · 116 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

1mo ago Changed · +30 lines 0ec7e6b6b574
2mo ago First seen · 86 lines · 50 tokens per session scan A 650c24f6ed8f

Subscribe to this mod's changes

performance-patterns is a skill published in the GitHub repository wylieswanson/apple-mail-pz-mcp (0 stars, last pushed 26d ago), with no licence file. It adds 50 tokens to every session and 1,421 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Debugging

performance-patterns next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
performance-patternswylieswanson/apple-mail-pz-mcp	Skill	0	26d ago	none	A	50	Claude Code
systematic-debuggingopen-metadata/OpenMetadata	Skill	16k	yesterday	Apache-2.0	A	37	Claude Code
log-error-digestzebbern/claude-code-guide	Skill	4.7k	3d ago	MIT	A	71	Claude Code, Codex
cwv-optimizeradobe/skills	Skill	319	yesterday	Apache-2.0	A	112	Claude Code
ci-fixersipyourdrink-ltd/bernstein	Skill	1.2k	yesterday	Apache-2.0	A	15	Claude Code, Codex
incident-response-incident-responsermyndharis/antigravity-skills	Skill	1.9k	23d ago	MIT	A	36	Claude Code
triaging-web-analytics-supportPostHog/posthog	Skill	41k	yesterday	none	A	151	Claude Code, Codex

apple-mail-pz-mcp: Skill for Claude Code