Speak the text. volume range is 0-100, rate range is -10 to 10.
AI agents invoke Speak to trigger actions in OfficeMCP. 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.
This tool triggers an external operation (text-to-speech audio output) on the user's system. It executes a system-level action that produces real-world output (audible speech), making it an Execute category tool. Misuse could involve unwanted audio output, potential social engineering via spoken messages, or disruptive behavior, warranting medium severity.
From the tool's definition Speak the text. volume range is 0-100, rate range is -10 to 10.
Documented attack patterns abuse exactly the kind of access Speak gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and OfficeMCP, and nothing reaches the server without passing your rules. This is the rule we recommend for Speak:
{
"version": "1",
"default": "deny",
"tools": {
"Speak": {
"limits": [
{
"counter": "speak_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}Speak stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
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Speak the text. volume range is 0-100, rate range is -10 to 10. It is categorised as a Execute tool in the OfficeMCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Office MCP server in PolicyLayer and add a rule for Speak: 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 OfficeMCP. Nothing to install.
Speak 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 Speak 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 Speak. 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.
Speak is provided by the Office MCP server (officemcp/officemcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 16 OfficeMCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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16 OfficeMCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.