Playbooks \u00b7 query playbookRun. Variables: after, filter, first, order, after1, filter1, first1, order1, after2, filter2, first2, order2, after3, first3, after4, first4, after5, filter3, first5, order3, after6, filter4, first6, order4, after7, filter5, first7, order5, id. Example variables: {\
AI agents call playbook_run 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.
The tool is a GraphQL query operation that retrieves playbook run data. The presence of only query-type variables (pagination, filtering, ordering, and ID lookup) with no mutation or execution parameters confirms this is a read-only data retrieval tool.
From the tool's definition 'query playbookRun' — uses GraphQL query operation with filter/pagination variables (after, filter, first, order, id), indicating data retrieval
Attacks that exploit this kind of access
Playbooks \u00b7 query playbookRun. Variables: after, filter, first, order, after1, filter1, first1, order1, after2, filter2, first2, order2, after3, first3, after4, first4, after5, filter3, first5, order3, after6, filter4, first6, order4, after7, filter5, first7, order5, 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 playbook_run: 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.
playbook_run 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 playbook_run 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 playbook_run. 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.
playbook_run 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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