Critical Risk →

opsera_users

User management: get current user, get by id, list, create, delete. See docs/API_REFERENCE.md.

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Part of the Opsera server.

opsera_users can permanently delete data in Opsera, with no limits today. PolicyLayer puts allow, deny, and rate-limit rules on every call. Live in minutes.

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AI agents may call opsera_users to permanently remove or destroy resources in Opsera. Without a policy, an autonomous agent could delete critical data in a loop with no way to undo the damage. PolicyLayer blocks destructive tools by default and requires explicit human approval before enabling them.

Without a policy, an AI agent could call opsera_users in a loop, permanently destroying resources in Opsera. There is no undo for destructive operations. PolicyLayer blocks this tool by default and only allows it when a human explicitly approves the action.

Destructive tools permanently remove data. Block by default. Only enable with explicit approval workflows.

policy.json
{
  "version": "1",
  "default": "deny",
  "hide": [
    "opsera_users"
  ]
}

See the full Opsera policy for all 10 tools.

Get this rule live on your own Opsera server in minutes. PolicyLayer enforces it on every call, before it runs.

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View all 10 tools →

These attack patterns abuse exactly the kind of access opsera_users gives an agent. Each links to the full case and the policy that stops it:

Browse the full MCP Attack Database →

Every attack above starts with a tool call. PolicyLayer checks each one against your policy first, so opsera_users only ever does what you allow.

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Other destructive tools across the catalogue. The same approach applies to each: deny by default, or require human approval.

What does the opsera_users tool do? +

User management: get current user, get by id, list, create, delete. See docs/API_REFERENCE.md.. It is categorised as a Destructive tool in the Opsera MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on opsera_users? +

Register the Opsera MCP server in PolicyLayer and add a rule for opsera_users: 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 Opsera. Nothing to install.

What risk level is opsera_users? +

opsera_users is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit opsera_users? +

Yes. Add a rate_limit block to the opsera_users 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.

How do I block opsera_users completely? +

Set action: deny in the PolicyLayer policy for opsera_users. 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.

What MCP server provides opsera_users? +

opsera_users is provided by the Opsera MCP server (https://agent.opsera.io/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Opsera tool call.

Deterministic rules across all 10 Opsera tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

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