Single tool call that bundles a session
AI agents call graph_build_context to retrieve information from Graph-Memory without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The name 'graph_build_context' and partial description suggest this tool retrieves and assembles relevant graph data into a session context (a read/query operation). However, the description is severely truncated, leaving uncertainty about whether it also writes or modifies data. Given sibling tools like graph_ingest (write) and graph_delete (destructive) are separate, context-building is likely read-only.
From the tool's definition 'Single tool call that bundles a session' — description is truncated and uninformative beyond indicating it assembles context for a session
Attacks that exploit this kind of access
Single tool call that bundles a session. It is categorised as a Read tool in the Graph-Memory MCP Server, which means it retrieves data without modifying state.
Register the Graph-Memory MCP server in PolicyLayer and add a rule for graph_build_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 Graph-Memory. Nothing to install.
graph_build_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 graph_build_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 graph_build_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.
graph_build_context is provided by the Graph-Memory MCP server (stevepridemore/graph-memory). 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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