Returns a ranked, token-capped briefing of the most important
AI agents call get_context_briefing to retrieve information from Memex without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns structured information from the temporal knowledge graph built by memex. It has no side effects—it only retrieves and ranks existing context data. The 'ranked' and 'token-capped' language suggests filtering and summarization of read data, not any write or destructive operation.
From the tool's definition Tool name 'get_context_briefing' and description 'Returns a ranked, token-capped briefing' indicate a retrieval operation.
Documented attack patterns abuse exactly the kind of access get_context_briefing gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Memex, and nothing reaches the server without passing your rules. This is the rule we recommend for get_context_briefing:
{
"version": "1",
"default": "deny",
"tools": {
"get_context_briefing": {}
}
}get_context_briefing is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Returns a ranked, token-capped briefing of the most important. It is categorised as a Read tool in the Memex MCP Server, which means it retrieves data without modifying state.
Register the Memex MCP server in PolicyLayer and add a rule for get_context_briefing: 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 Memex. Nothing to install.
get_context_briefing 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 get_context_briefing 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 get_context_briefing. 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.
get_context_briefing is provided by the Memex MCP server (stifler7/memex). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Memex, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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13 Memex tools catalogued and risk-classified — across an index of 43,000+ MCP servers.