Search memento relationships by their structured context fields (scope, conditions, evidence, components)
AI agents call search_memento_relationships_by_context to retrieve information from MCP Memento without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries relationships within the memento graph based on context criteria (scope, conditions, evidence, components). It has no side effects, does not execute arbitrary code, does not modify or delete data, and does not move money. It is a pure read operation analogous to a search or filter query.
From the tool's definition Tool description explicitly states 'Search memento relationships by their structured context fields' - a query operation with no modification, deletion, or execution of external operations.
Attacks that exploit this kind of access
Search memento relationships by their structured context fields (scope, conditions, evidence, components). It is categorised as a Read tool in the MCP Memento MCP Server, which means it retrieves data without modifying state.
Register the MCP Memento MCP server in PolicyLayer and add a rule for search_memento_relationships_by_context: 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 MCP Memento. Nothing to install.
search_memento_relationships_by_context 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 search_memento_relationships_by_context 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 search_memento_relationships_by_context. 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.
search_memento_relationships_by_context is provided by the MCP Memento MCP server (x-hannibal/mcp-memento). 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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