What is Pepper CLAUDE.md?

Developer instructions for Pepper, a tool server that lets an AI assistant inspect and control iOS simulator apps. Pepper runs inside the simulated app and provides tools for screens, builds, taps, typing, navigation, logs, network activity, and debugging.

Use it to build and inspect an iOS simulator app, capture screens or logs, query its interface, perform UI actions, test navigation, and investigate runtime behavior.

It gives the assistant a defined way to observe and interact with simulator apps without changing their source code.

How skwallace36/Pepper configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to skwallace36/Pepper. 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/skwallace36/Pepper/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/skwallace36/Pepper

Made for: Claude Code.

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/instructions/skwallace36/pepper/claude-md/github.svg)](https://agentmods.dev/instructions/skwallace36/pepper/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/skwallace36/pepper/claude-md"><img src="https://agentmods.dev/badge/instructions/skwallace36/pepper/claude-md/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/instructions/skwallace36/pepper/claude-md"><img src="https://agentmods.dev/badge/instructions/skwallace36/pepper/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,598 This file is loaded in full into every session.

When invoked 1,598 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.

Model	Per session	Once invoked
Fable 5.1	$0.01598	$0.01598
Opus 5.5	$0.00639	$0.00639
Sonnet 5.5	$0.00320	$0.00320
Haiku 4.5	$0.00160	$0.00160

Measured 2mo ago against content hash 709666ac42cd, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Pepper 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 · 83 lines

How it starts

The opening of the file, as written. The whole thing — 83 lines — stays where its author put it; the contents beside it link to each section on GitHub.

pepper

Pepper is a dylib injected into iOS simulator apps via DYLD_INSERT_LIBRARIES. It starts a WebSocket server inside the app process; MCP server and CLI tools connect to it. No source patches needed.

Source of truth for dylib code is dylib/. Config via .env (see .env.example). Run make help for all targets.

Adapters are optional app-specific modules (deep link routes, icon mappings, custom tools) compiled alongside the dylib. Set APP_ADAPTER_TYPE and ADAPTER_PATH in .env. Without an adapter, Pepper runs in generic mode.

MCP Tools

Tool definitions live in pepper_ios/mcp_tools_*.py modules. .mcp.json configures how to launch the MCP server; tools/pepper-mcp is the entry script. app_look is the primary observation tool. It sends the introspect command with mode=map.

app_look, app_build, app_build_hw, app_status, app_record, app_snapshot, app_console, app_network, app_debug, app_perf, app_swiftui, app_automation, app_eval, ui_tap, ui_scroll, ui_swipe, ui_input, ui_toggle, ui_gesture, ui_query, ui_accessibility, nav_go, nav_back, nav_dismiss, nav_keyboard, nav_dialog, nav_screen, state_vars, state_tools, net_tools, sys_tools, sim_control, sim_raw

Tools use a two-word prefix convention for routing. Standalone tools are high-frequency; grouped tools bundle related subcommands under one tool with a command parameter.

Standalone (23):

app_: app_look, app_build, app_build_hw, app_status, app_record, app_snapshot, app_console, app_network, app_eval
ui_: ui_tap, ui_scroll, ui_swipe, ui_input, ui_toggle, ui_gesture
nav_: nav_go, nav_back, nav_dismiss, nav_keyboard, nav_dialog, nav_screen
state_: state_vars
sim_: sim_control, sim_raw

Grouped (9):

ui_query (find, tree, verify, read, assert)
ui_accessibility (audit, action, events)
app_debug (layers, crash_log, constraints, responder_chain, target_actions, highlight, lifecycle, notifications, webview)
app_perf (perf, animations, heap, hangs, renders, timers)
app_swiftui (renders, body)
app_automation (script, wait_for, wait_idle, concurrency)
state_tools (defaults, keychain, clipboard, cookies, sandbox, coredata, undo_manager, flags)
net_tools (mock, simulate, http_call, timeline)
sys_tools (push, orientation, locale, appearance, dynamic_type, hook, frameworks, usage)

Read the full file on GitHub · 83 lines

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.

2mo ago First seen · 83 lines · 1,598 tokens per session scan A 709666ac42cd

Subscribe to this mod's changes

Pepper CLAUDE.md is an instructions file published in the GitHub repository skwallace36/Pepper (105 stars, last pushed 6mo ago), licensed MIT. It adds 1,598 tokens to every session, about $0.0064 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 2026-08-30.

Mobile accessibility ios llm-agent mcp mcp-server swift

Pepper CLAUDE.md next to 6 instructions from other repositories
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Pepper: Instructions file for Claude Code