Analyze a browser-captured WAV uploaded by an MCP Apps voice panel.
AI agents call analyze_uploaded_audio to retrieve information from Pronunciation & Voice Coach without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool reads and analyzes audio data to provide feedback on pronunciation and fluency. It retrieves information from uploaded audio and performs analysis without creating side effects, modifying data, or triggering external operations. The most severe capability it exhibits is querying/analyzing data, which is characteristic of Read category tools. No financial, destructive, or executable operations are implied.
From the tool's definition Tool description states it 'Analyze[s] a browser-captured WAV uploaded' — the verb is analytical/diagnostic in nature. No modification, deletion, or execution of external systems occurs. The tool processes audio data for feedback purposes.
Attacks that exploit this kind of access
Analyze a browser-captured WAV uploaded by an MCP Apps voice panel. It is categorised as a Read tool in the Pronunciation & Voice Coach MCP Server, which means it retrieves data without modifying state.
Register the Pronunciation & Voice Coach MCP server in PolicyLayer and add a rule for analyze_uploaded_audio: 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 Pronunciation & Voice Coach. Nothing to install.
analyze_uploaded_audio is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the analyze_uploaded_audio 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 analyze_uploaded_audio. 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.
analyze_uploaded_audio is provided by the Pronunciation & Voice Coach MCP server (pypi:mcp-server-pronunciation). 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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