Remove a context source from a prompt. Use list_context_sources first to get the context source ID.
AI agents call remove_context_source to permanently remove resources in PromptingBox MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Removing a context source is a destructive operation that dissociates/deletes a linked context source from a prompt. This action is not easily reversible without re-adding the source manually, making it destructive rather than merely a write/update operation. The blast radius is medium since it affects only a single prompt's context linkage rather than deleting entire prompts or folders.
From the tool's definition Remove a context source from a prompt
Attacks that exploit this kind of access
Remove a context source from a prompt. Use list_context_sources first to get the context source ID. It is categorised as a Destructive tool in the PromptingBox MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the PromptingBox MCP Server MCP server in PolicyLayer and add a rule for remove_context_source: 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.
remove_context_source is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the remove_context_source 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 remove_context_source. 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.
remove_context_source 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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