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touchbridge-mcp: Instructions file for Claude Code

CLAUDE.md

touchbridge-mcp CLAUDE.md is an instructions file for Claude Code from MarshallBear1/touchbridge-mcp. It costs 443 tokens per session, scanned A, original, MIT.

Instructions for TouchBridge, an MCP server that lets an agent inspect and control iOS simulators and connected iPhones. MCP is a standard way for an agent to call external tools.

In plain words
What is it for?
Use it to scan iOS interfaces, view screenshots, describe screen elements, perform batched device actions, and capture design snapshots for tools such as Figma.
Why use it?
Device targets, screen coordinates, and privacy-sensitive screenshots can cause mistakes if handled incorrectly. These instructions define how to discover devices, inspect screens, and verify actions.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md.

This is MarshallBear1/touchbridge-mcp's own configuration. It tells Claude Code how to work on touchbridge-mcp 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 touchbridge-mcp configures →

not rated 5repo 2mo ago A scan 443 tokens original MIT
View source ↗ MarshallBear1/touchbridge-mcp
Reuse

Borrowing it

Nothing to install: this file belongs to MarshallBear1/touchbridge-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/MarshallBear1/touchbridge-mcp/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/MarshallBear1/touchbridge-mcp

Made for: Claude Code.

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<a href="https://agentmods.dev/instructions/marshallbear1/touchbridge-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/marshallbear1/touchbridge-mcp/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 443 This file is loaded in full into every session.
When invoked 443 The same file — it is already loaded in full.
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 $0.00443 $0.00443
Opus 5.5 $0.00177 $0.00177
Sonnet 5.5 $0.00089 $0.00089
Haiku 4.5 $0.00044 $0.00044

Measured 2mo ago against content hash 2f1b99943332, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

touchbridge-mcp 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 2mo 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.md · 39 lines

What it actually says

TouchBridge

MCP server for controlling iOS simulators and physical iPhones.

Workflow

  1. Call get_execution_context first to discover available devices
  2. If setup or connectivity is unclear, call doctor for structured read-only diagnostics
  3. If target === 'ambiguous', ask the user which device to use
  4. If target === 'device', inform the user about viewer_url so they can see the screen
  5. If target === 'none', tell the user to boot a simulator or connect an iPhone
  6. Pass the returned udid to all subsequent tool calls

Key Patterns

  • Use scan_ui before interacting — it returns interactive elements with tap coordinates
  • Use get_screenshot to visually verify the current screen state; its pixels are unredacted, so delete the returned temporary file after use
  • Use capture_design_snapshot when the screenshot must be durable or handed to Figma, Slides, or another editing tool; pass the user's spoken instruction in intent and consume the returned editor.json for normalized layers
  • Use describe_screen for the full element tree (all types, not just interactive)
  • All coordinates are in device screen points (not pixels)
  • Use device_actions for batching multiple sequential actions
  • Choose the smallest scan_ui region possible for speed

Physical Devices

  • Physical devices require WebDriverAgent (WDA) running on the device
  • Run npx -y github:MarshallBear1/touchbridge-mcp --setup to install WDA and dependencies
  • The viewer URL shows a live screen stream in the browser
  • The agent cannot see the physical device screen directly — rely on scan_ui and get_screenshot

Coordinate Systems

Common iPhone screen sizes (in points):

  • iPhone 15/16 Pro: 393 x 852
  • iPhone 15/16 Pro Max: 430 x 932
  • iPhone SE: 375 x 667

All coordinates passed to tap/swipe should be in these point values.

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. 2mo ago First seen · 39 lines · 443 tokens per session scan A 2f1b99943332

Subscribe to this mod's changes

touchbridge-mcp CLAUDE.md is an instructions file published in the GitHub repository MarshallBear1/touchbridge-mcp (5 stars, last pushed 2mo ago), licensed MIT. It adds 443 tokens to every session, about $0.0018 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.

Hardware and IoTMobileai-agentsautomationfigmaiosiphonemcp
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