Mutate the operator whitelist with an owner-signed payload. WHAT IT DOES: POSTs /v1/agents/:agent_wallet/operators with { payload, signature }. Broker enforces that the signer is the OWNER (agent_wallet itself) — operator-signed mutations of the whitelist are rejected even if the signer is otherw...
Risk signalsAccepts raw HTML/template content (payload) · Bulk/mass operation — affects multiple targets
Part of the Fomox402 server.
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AI agents may call agent_operators_set to permanently remove or destroy resources in Fomox402. 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 agent_operators_set in a loop, permanently destroying resources in Fomox402. 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.
{
"version": "1",
"default": "deny",
"hide": [
"agent_operators_set"
]
}See the full Fomox402 policy for all 25 tools.
These attack patterns abuse exactly the kind of access agent_operators_set gives an agent. Each links to the full case and the policy that stops it:
Other destructive tools across the catalogue. The same approach applies to each: deny by default, or require human approval.
Mutate the operator whitelist with an owner-signed payload. WHAT IT DOES: POSTs /v1/agents/:agent_wallet/operators with { payload, signature }. Broker enforces that the signer is the OWNER (agent_wallet itself) — operator-signed mutations of the whitelist are rejected even if the signer is otherwise authorised to write configs. Headless — the broker NEVER signs. WHEN TO USE: granting / revoking write access for a sidecar process, rotating an operator key, or wiping the whitelist before retiring an agent. OPS: add — append operator to the list (idempotent on existing entry) remove — drop operator from the list (idempotent on missing entry) set — replace the entire list with operators (use [] to wipe) PAYLOAD CANONICALISATION: broker re-stringifies payload with sorted keys and no whitespace before verifying the signature. Sign that exact form. RETURNS: OperatorsList after the mutation. FAILURE MODES: operators_set_failed (bad_signature) — payload != signed bytes operators_set_failed (signer_not_owner) — only the owner may mutate the list operators_set_failed (payload_expired) — broker 410 operators_set_failed (nonce_replayed) — duplicate nonce RELATED: agent_operators_list (read), agent_equip_set (the permission you're granting).. It is categorised as a Destructive tool in the Fomox402 MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Fomox402 MCP server in PolicyLayer and add a rule for agent_operators_set: 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 Fomox402. Nothing to install.
agent_operators_set 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 agent_operators_set 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 agent_operators_set. 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.
agent_operators_set is provided by the Fomox402 MCP server (https://bot.staccpad.fun/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 25 Fomox402 tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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