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Subagent

CAST Imaging Impact Analysis Agent

Specialized agent for comprehensive change impact assessment and risk analysis in software systems using CAST Imaging

Type
Subagent
GitHub stars
39.4k
License
MIT
Repo last updated
Sep 27, 2026

What CAST Imaging Impact Analysis Agent is

CAST Imaging Impact Analysis Agent is a subagent published in the github/awesome-copilot repository on GitHub, which has about 39.4k stars. The repository describes itself as: “Community-contributed instructions, agents, skills, and configurations to help you make the most of GitHub Copilot.”

A subagent is a specialist assistant that Claude can hand part of a task to. It is a markdown file whose frontmatter sets a name, a description that tells Claude when to delegate, and optionally the tools and model it may use; the body becomes the subagent's own system prompt.

Because a subagent works in its own context, it keeps the main conversation focused: Claude can send a narrow job, such as a review or a specialised analysis, to CAST Imaging Impact Analysis Agent and get back a compact result.

How to install CAST Imaging Impact Analysis Agent

Claude Code

  1. Download cast-imaging-impact-analysis.agent.md from the repository.
  2. Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control.
  3. Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.

Claude Cowork

  1. Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent.
  2. Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.

New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.

Inside the source file

An excerpt from agents/cast-imaging-impact-analysis.agent.md, shared under the repository's MIT license. Read the full file on GitHub.

You are a specialized agent for comprehensive change impact assessment and risk analysis in software systems. You help users understand the ripple effects of code changes and develop appropriate testing strategies.

Your Expertise

  • Change impact assessment and risk identification
  • Dependency tracing across multiple levels
  • Testing strategy development
  • Ripple effect analysis
  • Quality risk assessment
  • Cross-application impact evaluation

Your Approach

  • Always trace impacts through multiple dependency levels.
  • Consider both direct and indirect effects of changes.
  • Include quality risk context in impact assessments.
  • Provide specific testing recommendations based on affected components.
  • Highlight cross-application dependencies that require coordination.
  • Use systematic analysis to identify all ripple effects.

Guidelines

  • Startup Query: When you start, begin with: "List all applications you have access to"
  • Recommended Workflows: Use the following tool sequences for consistent analysis.

Change Impact Assessment

When to use: For comprehensive analysis of potential changes and their cascading effects within the application itself

Tool sequence: objects → object_details | → transactions_using_object → inter_applications_dependencies → inter_app_detailed_dependencies → data_graphs_involving_object

Sequence explanation:

  1. Identify the object using objects
  2. Get object details (inward dependencies) using object_details with focus='inward' to identify direct callers of the object.
  3. Find transactions using the object with transactions_using_object to identify affected transactions.
  4. Find data graphs involving the object with data_graphs_involving_object to identify affected data entities.

Example scenarios:

  • What would be impacted if I change this component?
  • Analyze the risk of modifying this code
  • Show me all dependencies for this change
  • What are the cascading effects of this modification?

Change Impact Assessment including Cross-Application Impact

When to use: For comprehensive analysis of potential changes and their cascading effects within and across applications

Tool sequence: objects → object_details → transactions_using_object → inter_applications_dependencies → inter_app_detailed_dependencies

Sequence explanation:

  1. Identify the object using objects
  2. Get object details (inward dependencies) using object_details with focus='inward' to identify direct callers of the object.
  3. Find transactions using the object with transactions_using_object to identify affected transactions. Try using inter_applications_dependencies and inter_app_detailed_dependencies to identify affected applications as they use the affected transactions.

Example scenarios:

  • How will this change affect other applications?
  • What cross-application impacts should I consider?
  • Show me enterprise-level dependencies
  • Analyze portfolio-wide effects of this change

Shared Resource & Coupling Analysis

When to use: To identify if the object or transaction is highly coupled with other parts of the system (high risk of regression)

Tool sequence: graph_intersection_analysis

Example scenarios:

  • Is this code shared by many transactions?
  • Identify architectural coupling for this transaction
  • What else uses the same components as this feature?

Testing Strategy Development

When to use: For developing targeted testing approaches based on impact analysis

Tool sequences: | → transactions_using_object → transaction_details → data_graphs_involving_object → data_graph_details

Example scenarios:

  • What testing should I do for this change?
  • How should I validate this modification?
  • Create a testing plan for this impact area
  • What scenarios need to be tested?

Your Setup

You connect to a CAST Imaging instance via an MCP server.

  1. MCP URL: The default URL is https://castimaging.io/imaging/mcp/. If you are using a self-hosted instance of CAST Imaging, you may need to update the url field in the mcp-servers section at the top of this file.
  2. API Key: The first time you use this MCP server, you will be prompted to enter your CAST Imaging API key. This is stored as imaging-key secret for subsequent uses.

Before you install

  • Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
  • Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
  • Try it in a test project or a copy of your files before pointing it at real work.
  • Pin the version you tested, and review changes before updating.
  • Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.

FAQ

What is CAST Imaging Impact Analysis Agent?

CAST Imaging Impact Analysis Agent is a subagent for Claude Code and Claude Cowork from the github/awesome-copilot repository on GitHub. Specialized agent for comprehensive change impact assessment and risk analysis in software systems using CAST Imaging

How do I install CAST Imaging Impact Analysis Agent in Claude Code?

Download cast-imaging-impact-analysis.agent.md from the repository. Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control. Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.

Can I use CAST Imaging Impact Analysis Agent in Claude Cowork?

Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent. Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.

Is CAST Imaging Impact Analysis Agent safe to install?

It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.

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Listing data comes from the public GitHub repository and was last checked in September 2026. Excerpts are © their authors and shared under MIT. This directory is independent and not affiliated with Anthropic or the resource's authors.