Reverse-engineers and debugs macOS and iOS binaries with Hopper Disassembler and LLDB: ObjC/Swift symbols, dyld loading, framework internals, and crash investigation from disassembly. Use when private API behavior or a runtime crash needs to be understood at the binary level.
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See how to installReview the instructions the agent will receive before you install.
Attribution: Sourced from steipete/agent-scripts by Peter Steinberger.
Goal: use Hopper through mcporter as a queryable disassembler, then combine the result with local source, LLDB, logs, and focused repros.
Validate the MCP server:
MCPORTER_LIST_TIMEOUT=15000 timeout 20 mcporter list hopper --brief
List open Hopper documents:
MCPORTER_CALL_TIMEOUT=20000 timeout 30 mcporter call hopper.list_documents --output json
If no document is open, open the binary/framework in Hopper first:
open -a "Hopper Disassembler" /path/to/Binary
Hopper may show a first-open/import dialog. Let the user click the confirmation button, then retry the MCP call. Avoid parallel Hopper MCP calls during import.
Prefer already extracted dyld-cache framework binaries when present:
/tmp/dsc-appkit/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit
/tmp/dsc-appkit/System/Library/Frameworks/SwiftUI.framework/Versions/A/SwiftUI
mcporter call hopper.search_procedures pattern='NSStatusBar' --output json
mcporter call hopper.search_name pattern='NSStatusBarButtonCell' --output json
mcporter call hopper.search_strings pattern='NSStatusItem' --output json
mcporter call hopper.procedure_info procedure='<symbol>' --output json
mcporter call hopper.procedure_assembly procedure='<symbol>' --output json
mcporter call hopper.procedure_pseudo_code procedure='<symbol>' --output json
mcporter call hopper.procedure_callers procedure='<symbol>' --output json
mcporter call hopper.procedure_callees procedure='<symbol>' --output json
mcporter call hopper.xrefs address=0x12345678 --output json
timeout; a modal/import or closed document can leave the transport stuck.Connection closed, check for a Hopper modal, then retry.list_documents.pgrep -af 'mcporter|HopperMCPServer|Hopper Disassembler'
mcporter daemon stop
mcporter daemon start
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Use when long-lived agents, project memories, system prompts, or playbooks are repeatedly summarized, rewritten, or optimized and risk losing domain detail, provenance, or execution learnings.
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Use this skill when the user explicitly asks to map, document, or onboard into an existing codebase. Trigger for prompts like "map this codebase", "document this architecture", "onboard me to this repo", or "create codebase docs". Do not trigger for routine feature implementation, bug fixes, or narrow code edits unless the user asks for repository-level discovery.
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Write, debug, and optimize Adobe Illustrator automation scripts using ExtendScript (JavaScript/JSX). Use when creating or modifying scripts that manipulate documents, layers, paths, text frames, colors, symbols, artboards, or any Illustrator DOM objects. Covers the complete JavaScript object model, coordinate system, measurement units, export workflows, and scripting best practices.
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Patterns and techniques for adding governance, safety, and trust controls to AI agent systems. Use this skill when: - Building AI agents that call external tools (APIs, databases, file systems) - Implementing policy-based access controls for agent tool usage - Adding semantic intent classification to detect dangerous prompts - Creating trust scoring systems for multi-agent workflows - Building audit trails for agent actions and decisions - Enforcing rate limits, content filters, or tool restrictions on agents - Working with any agent framework (PydanticAI, CrewAI, OpenAI Agents, LangChain, AutoGen)
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Check any AI agent codebase against the OWASP Agentic Security Initiative (ASI) Top 10 risks. Use this skill when: - Evaluating an agent system's security posture before production deployment - Running a compliance check against OWASP ASI 2026 standards - Mapping existing security controls to the 10 agentic risks - Generating a compliance report for security review or audit - Comparing agent framework security features against the standard - Any request like "is my agent OWASP compliant?", "check ASI compliance", or "agentic security audit"
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