AI agents invoke test_terminal_notification_rule to trigger actions in Todos. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
The tool actively evaluates/executes a rule against a sample event, which triggers an operation (terminal notification logic) rather than merely reading or writing data. It runs logic against inputs and may produce side effects such as triggering notifications. Confidence is moderate because the description is somewhat ambiguous about whether it has true external side effects or is purely a dry-run evaluation.
From the tool's definition "Evaluate one local terminal notification watch rule against a sample event"
Attacks that exploit this kind of access
Evaluate one local terminal notification watch rule against a sample event. It is categorised as a Execute tool in the Todos MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Todos MCP server in PolicyLayer and add a rule for test_terminal_notification_rule: 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 Todos. Nothing to install.
test_terminal_notification_rule is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the test_terminal_notification_rule 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 test_terminal_notification_rule. 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.
test_terminal_notification_rule is provided by the Todos MCP server (@hasna/todos). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
test_terminal_notification_rule is one line of Todos's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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