Revoke one active access grant, or all active grants, and persist the revocation in local state.
AI agents call ops_access_revoke to permanently remove resources in Slack Max API MCP — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Revoking access grants is a destructive action: it removes active credentials or permissions that cannot be spontaneously restored and requires manual reauthorization by an administrator to undo. The ability to revoke all active grants simultaneously creates significant blast radius in a workspace context, potentially locking out users or services.
From the tool's definition Tool description explicitly states 'Revoke one active access grant, or all active grants' and 'persist the revocation' — these are irreversible operations that remove active permissions/access that cannot be easily undone or recovered.
Attacks that exploit this kind of access
Revoke one active access grant, or all active grants, and persist the revocation in local state. It is categorised as a Destructive tool in the Slack Max API MCP MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Slack Max API MCP server in PolicyLayer and add a rule for ops_access_revoke: 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 Slack Max API MCP. Nothing to install.
ops_access_revoke is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the ops_access_revoke 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 ops_access_revoke. 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.
ops_access_revoke is provided by the Slack Max API MCP server (jeongwoobin335/slack-mcp). 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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