Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/dimillian/foundationchat/claude-mdgit clone --depth 1 https://github.com/Dimillian/FoundationChatWhat 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 | $0.01511 | $0.01511 |
| Opus 5 | $0.00756 | $0.00756 |
| Sonnet 5 | $0.00302 | $0.00302 |
| Haiku 4.5 | $0.00151 | $0.00151 |
Grade A, and why
FoundationChat CLAUDE.md 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 2d 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.
How it starts
The opening of the file, as written. The whole thing — 209 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Project Overview
FoundationChat is a SwiftUI application demonstrating Apple's Foundation Models framework for on-device AI. The project targets iOS 26.0+ and showcases chat functionality using Apple Intelligence.
Framework Overview
Apple's Foundation Models framework provides on-device large language models that power Apple Intelligence. It's available on iOS 26.0+, iPadOS 26.0+, macOS 26.0+, and visionOS 26.0+.
Key Documentation Files
1. EXAMPLES/FOUNDATION_MODELS_RULES.md
When to use: Start here for understanding core framework principles
- Availability checking patterns
- Session management rules
- Performance optimization guidelines
- Safety implementation requirements
- Platform requirements and limitations
2. EXAMPLES/QUICK_REFERENCE.md
When to use: For quick code snippets and common patterns
- Import statements
- Basic usage patterns
- Error handling snippets
- Common configurations
3. EXAMPLES/01_Basic_Usage.md
When to use: For simple text generation tasks
- Creating sessions
- Basic prompting
- Handling availability states
- Error handling basics
- Multi-turn conversations
4. EXAMPLES/02_Structured_Output.md
When to use: When you need structured data from the model
- @Generable macro usage
- @Guide annotations
- Complex nested structures
- Optional properties
- Performance considerations
5. EXAMPLES/03_Streaming_Responses.md
When to use: For real-time UI updates during generation
- Basic streaming implementation
- Streaming with structured output
- Progress tracking
- Error handling in streams
- SwiftUI integration
6. EXAMPLES/04_Tool_Calling.md
When to use: When the model needs external data/actions
- Tool protocol implementation
- Integration with system frameworks (Contacts, Calendar, etc.)
- Stateful tools
- Multiple tool usage
7. EXAMPLES/05_Performance_and_Safety.md
When to use: For optimization and safety implementation
- Prewarming strategies
- Schema optimization
- Safety boundaries
- Context management
- Performance monitoring
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.
- 2d ago First seen · 209 lines · 1,511 tokens per session scan A 2abb87a546bc
FoundationChat CLAUDE.md is an instructions file published in the GitHub repository Dimillian/FoundationChat (347 stars, last pushed 1y ago), licensed MIT. It adds 1,511 tokens to every session, about $0.0076 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.
Other instructions, from other repositories
AniShelf AGENTS.md
Instructions for samuelhe52/AniShelf, covering anishelf - developer notes, workflow, code style, testing and commits.
swift-architecture-skill CLAUDE.md
Instructions for efremidze/swift-architecture-skill, covering swift architecture skill, project structure, how the skill works and key conventions.
swift-architecture-skill AGENTS.md
Instructions for efremidze/swift-architecture-skill, covering agents guidelines for swift architecture skill, working with this repository, 1. understanding the skill, 2. modifying architecture playbooks and 3. testing and validation.
here-macos AGENTS.md
Instructions for koalaauto/here-macos: Canonical project notes — architecture, conventions, gotchas, versioning — live in CLAUDE.md.
pareto-mac AGENTS.md
AGENTS.md instructions for ParetoSecurity/pareto-mac, covering repository guidelines, project structure & module organization, build, test, and development commands, coding style & naming conventions and testing guidelines.
swift-ios-skills AGENTS.md
AGENTS.md instructions for dpearson2699/swift-ios-skills, covering claude.md, communication style, what this repo is, core repo shape and required context before any skill change.