Access Groups \u00b7 query accessGroup. Variables: after, filter, first, order, after1, filter1, first1, order1, after2, filter2, first2, order2, id. Example variables: {\
AI agents call access_group to retrieve information from ReliaQuest GreyMatter MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a read-only query tool that retrieves access group information from the GreyMatter platform. The parameters are standard pagination and filtering variables used in GraphQL queries. No side effects or data modifications are indicated. While access group data could be sensitive in a security context, the tool itself only performs retrieval without changing system state.
From the tool's definition Tool description indicates 'query accessGroup' with query parameters (after, filter, first, order, id) typical of data retrieval operations. No descriptions of modification, deletion, code execution, or financial operations.
Attacks that exploit this kind of access
Access Groups \u00b7 query accessGroup. Variables: after, filter, first, order, after1, filter1, first1, order1, after2, filter2, first2, order2, id. Example variables: {\. It is categorised as a Read tool in the ReliaQuest GreyMatter MCP Server MCP Server, which means it retrieves data without modifying state.
Register the ReliaQuest GreyMatter MCP Server MCP server in PolicyLayer and add a rule for access_group: 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 ReliaQuest GreyMatter MCP Server. Nothing to install.
access_group 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 access_group 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 access_group. 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.
access_group is provided by the ReliaQuest GreyMatter MCP Server MCP server (space-c0wboy/reliaquest-greymatter-mcp-server). 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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