Kiri-Friends: Skill for Claude Code

.agents/skills/kiri-friends-core/SKILL.md

kiri-friends-core is a skill for Claude Code, Codex from Project-Kiri/Kiri-Friends. It costs 46 tokens per session (549 once invoked), scanned A, original, MIT.

Project-specific rules for Kiri Friends, including its Apple Watch app, shared data models, and Mac command-line bridge. It describes how these parts are separated and how they exchange JSON messages.

In plain words
What is it for?
Use it when implementing Kiri Friends watch screens, shared models, command-line communication, notifications, complications, or iPhone companion features.
Why use it?
It keeps changes consistent with the project's module boundaries and communication format. This helps prevent incompatible code between the watch app, shared code, and Mac tools.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions Claude Code; installed under .agents/ (shared by several agents); mentions Codex.

This is Project-Kiri/Kiri-Friends's own configuration. It tells Claude Code and Codex how to work on Kiri-Friends itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything Kiri-Friends configures →

Reuse

Borrowing it

Nothing to install: this file belongs to Project-Kiri/Kiri-Friends. 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/Project-Kiri/Kiri-Friends/main/.agents/skills/kiri-friends-core/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/Project-Kiri/Kiri-Friends

Made for: Claude Code, Codex.

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.

agentmods badge for kiri-friends-core

README.md
[![agentmods](https://agentmods.dev/badge/skills/project-kiri/kiri-friends/kiri-friends-core/github.svg)](https://agentmods.dev/skills/project-kiri/kiri-friends/kiri-friends-core)
Your own site
<a href="https://agentmods.dev/skills/project-kiri/kiri-friends/kiri-friends-core"><img src="https://agentmods.dev/badge/skills/project-kiri/kiri-friends/kiri-friends-core/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.

agentmods 80×15 button for kiri-friends-core

Your own site · 80×15
<a href="https://agentmods.dev/skills/project-kiri/kiri-friends/kiri-friends-core"><img src="https://agentmods.dev/badge/skills/project-kiri/kiri-friends/kiri-friends-core.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 46 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 549 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 original 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00046 $0.00549
Opus 5 $0.00023 $0.00275
Sonnet 5 $0.00009 $0.00110
Haiku 4.5 $0.00005 $0.00055

Measured 12d ago against content hash 405c552a0560, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

kiri-friends-core 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 12d 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.

.agents/skills/kiri-friends-core/SKILL.md · 77 lines

What it actually says

Kiri Friends Core Conventions

Module Boundaries

KiriFriendsCore

The shared domain layer. No platform dependencies.

  • Models: CLIStatus, CLITask, CLICommand, CLIBridgeMessage
  • Protocol: CLIBridgeProtocol, message serialization
  • State: AppState, ConnectionState (value types)

KiriFriendsWatchKit

Shared watch components. watchOS-only dependencies.

  • Views: Reusable SwiftUI view components
  • Complications: WidgetKit complication definitions
  • Extensions: SwiftUI and WatchKit extensions

KiriFriendsWatchApp

watchOS executable. Depends on Core and WatchKit.

  • Entry: KiriFriendsWatchApp.swift
  • Views: ContentView, StatusView, CommandsView, HistoryView, SettingsView
  • Notifications: NotificationController

KiriFriendsCLI

Mac CLI bridge executable. Depends on Core.

  • Server: TCP/Unix socket server
  • Client: CLI tool adapters for Claude Code, OpenCode, Codex

Communication Protocol

All messages use the JSON envelope defined in docs/core/cli-bridge.md:

struct CLIBridgeMessage: Codable {
    let version: Int
    let id: UUID
    let type: MessageType
    let payload: Payload
}

Data Model Conventions

  • Use structs, not classes, for all domain models
  • Make models Codable, Hashable, and Sendable
  • Use UUID for all identifiers
  • Timestamps use ISO8601DateFormatter

State Management

  • Use @Observable (Swift 6) for reference-type state containers
  • Use @State and @Binding for view-local state
  • Propagate changes through ObservableObject only when crossing module boundaries

Naming Conventions

  • Types: PascalCase (e.g., CLIStatus, TaskResult)
  • Functions and properties: camelCase (e.g., currentTask, sendPrompt)
  • Files match their primary type name
  • Test files: {TypeName}Tests.swift
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.

  1. 12d ago First seen · 77 lines · 46 tokens per session scan A 405c552a0560

Subscribe to this mod's changes

kiri-friends-core is a skill published in the GitHub repository Project-Kiri/Kiri-Friends (11 stars, last pushed 3mo ago), licensed MIT. It adds 46 tokens to every session and 549 once invoked, about $0.0002 per session on Opus 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 2026-08-30.

Related

Other skills, from other repositories

systematic-debugging

Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.

obra/superpowers · 21 tokens

local-ai-agents

Build local-first AI agents that run entirely on a developer workstation with Microsoft Foundry Local and Qwen function-calling models. Covers Small Language Models (SLMs), the OpenAI-compatible local endpoint, sandboxed local tools, local RAG with Chroma, local MCP servers, hybrid cloud/local routing, and the…

microsoft/ai-agents-for-beginners · 200 tokens

next-cache-components-adoption

Turn on Cache Components in a Next.js app and resolve the blocking routes it surfaces. Use when the user wants to enable, adopt, or migrate to Cache Components, flip the cacheComponents flag, work through a flood of blocking-prerender / instant validation errors, run the cache-components-instant-false codemod, or…

vercel/next.js · 95 tokens

chat-pet-sprite-creation

Use when creating or changing VS Code chat pet sprite art, sprite sheets, state animations, eye treatments, Stable/Insiders variants, or pet transitions under src/vs/workbench/contrib/chat/browser/widget/media/chatPet.

microsoft/vscode · 53 tokens

cpu-profile-analysis

Analyze V8/Chrome CPU profiles (.cpuprofile) and DevTools trace files (Trace-.json). Use when: profiling performance, investigating slow functions, comparing code paths, finding bottlenecks, analyzing timeToRequest, understanding call trees from sampling profiler data, analyzing layout/paint/rendering, investigating…

microsoft/vscode · 71 tokens

insight-error-page

Write or audit an insight-kind error page for the Next.js dev overlay. Use when creating a new errors/ .mdx page, auditing an existing one, or checking that a page matches the framework fix cards. Covers page structure, title alignment, FixCard cards with Copy prompt button, code snippets, terminology verification…

vercel/next.js · 83 tokens