List all context sources attached to a prompt. Context sources are files or text that provide additional context when using the prompt.
AI agents call list_context_sources to retrieve information from PromptingBox MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays information about context sources associated with a prompt. It is purely informational with no ability to modify, delete, or execute operations. The blast radius of misuse is minimal—an attacker would only gain visibility into what context has been attached to prompts, not the ability to alter or act upon that data.
From the tool's definition Tool description states it 'List all context sources attached to a prompt' - a query operation with no modification or execution of side effects.
Attacks that exploit this kind of access
List all context sources attached to a prompt. Context sources are files or text that provide additional context when using the prompt. It is categorised as a Read tool in the PromptingBox MCP Server MCP Server, which means it retrieves data without modifying state.
Register the PromptingBox MCP Server MCP server in PolicyLayer and add a rule for list_context_sources: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches PromptingBox MCP Server. Nothing to install.
list_context_sources is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list_context_sources rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for list_context_sources. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
list_context_sources is provided by the PromptingBox MCP Server MCP server (promptingbox/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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