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/stefan-nitu/mcp-xcode-server/claude-mdgit clone --depth 1 https://github.com/Stefan-Nitu/mcp-xcode-serverWrote 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.
[](https://agentmods.dev/instructions/stefan-nitu/mcp-xcode-server/claude-md)<a href="https://agentmods.dev/instructions/stefan-nitu/mcp-xcode-server/claude-md"><img src="https://agentmods.dev/badge/instructions/stefan-nitu/mcp-xcode-server/claude-md.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00384 | $0.00384 |
| Opus 5 | $0.00192 | $0.00192 |
| Sonnet 5 | $0.00077 | $0.00077 |
| Haiku 4.5 | $0.00038 | $0.00038 |
Grade A, and why
mcp-xcode-server 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 4d 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.
What it actually says
MANDATORY INITIALIZATION - DO THIS IMMEDIATELY
⚠️ STOP - READ THIS FIRST ⚠️
YOU MUST READ THESE DOCUMENTS IMMEDIATELY UPON STARTING ANY CONVERSATION ABOUT THIS PROJECT. DO NOT WAIT TO BE ASKED. DO NOT PROCEED WITHOUT READING THEM FIRST.
Required Documents (READ NOW):
docs/TESTING-PHILOSOPHY.md- Critical testing patterns and approachesdocs/ARCHITECTURE.md- Clean/Hexagonal Architecture structuredocs/ERROR-HANDLING.md- Error handling patterns and presentation conventions
Verification Checklist:
- I have read
docs/TESTING-PHILOSOPHY.mdcompletely - I have read
docs/ARCHITECTURE.mdcompletely - I have read
docs/ERROR-HANDLING.mdcompletely - I understand the testing philosophy (integration focus, proper mocking, behavior testing)
- I understand the architecture layers (Domain, Application, Infrastructure, Presentation)
- I understand error handling patterns (typed errors, emoji prefixes, separation of concerns)
If you haven't read these documents yet, STOP and read them now using the Read tool. Only after reading all three documents should you proceed to help the user.
Project Context
This is an MCP (Model Context Protocol) server for Xcode operations. The codebase follows:
- Clean/Hexagonal Architecture principles
- Integration-focused testing (60% integration, 25% unit, 10% E2E, 5% static)
- Parse-don't-validate pattern with domain validation
- Domain primitives over primitive types
- Type-safe enum comparisons (always use
SimulatorState.Booted, never'Booted')
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.
- 4d ago First seen · 31 lines · 384 tokens per session scan A aaa40398a3e7
mcp-xcode-server CLAUDE.md is an instructions file published in the GitHub repository Stefan-Nitu/mcp-xcode-server (1 stars, last pushed 11mo ago), licensed MIT. It adds 384 tokens to every session, about $0.0019 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 2026-08-31.
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