Access Groups \u00b7 mutation createAccessGroup. Variables: after, filter, first, order, after1, filter1, first1, order1, after2, filter2, first2, order2, input. Example variables: {\
AI agents use create_access_group to create or update resources in ReliaQuest GreyMatter MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your ReliaQuest GreyMatter MCP Server environment.
This tool creates access control groups, which are foundational security/identity management objects. Creating or modifying access groups can grant or restrict permissions to users and systems. While not immediately destructive (the action is reversible), it has significant security implications as it directly impacts access control policies and user permissions.
From the tool's definition Tool name 'create_access_group' and description indicating 'mutation createAccessGroup' demonstrates creation of access control groups. This is a GraphQL mutation that creates new security-related entities.
Attacks that exploit this kind of access
Access Groups \u00b7 mutation createAccessGroup. Variables: after, filter, first, order, after1, filter1, first1, order1, after2, filter2, first2, order2, input. Example variables: {\. It is categorised as a Write tool in the ReliaQuest GreyMatter MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the ReliaQuest GreyMatter MCP Server MCP server in PolicyLayer and add a rule for create_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.
create_access_group is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the create_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 create_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.
create_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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