AI agents call search_transcript to retrieve information from Noapi Google Search without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool appears to search or query transcript data (likely YouTube transcripts based on server capabilities), which is a retrieval operation with no side effects. This aligns with the Read category. Confidence is moderate (0.75) rather than high because the tool description is empty, leaving some ambiguity about exact functionality, though the name and server context strongly suggest a read-only search operation.
From the tool's definition Tool name 'search_transcript' and server description indicating it provides 'YouTube transcriptions' access; the name and context suggest querying/retrieving transcript data without modification.
Documented attack patterns abuse exactly the kind of access search_transcript gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Noapi Google Search, and nothing reaches the server without passing your rules. This is the rule we recommend for search_transcript:
{
"version": "1",
"default": "deny",
"tools": {
"search_transcript": {}
}
}search_transcript is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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search_transcript. It is categorised as a Read tool in the Noapi Google Search MCP Server, which means it retrieves data without modifying state.
Register the Noapi Google Search MCP server in PolicyLayer and add a rule for search_transcript: 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 Noapi Google Search. Nothing to install.
search_transcript 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 search_transcript 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 search_transcript. 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.
search_transcript is provided by the Noapi Google Search MCP server (vincentkaufmann/noapi-google-search-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 38 Noapi Google Search tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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38 Noapi Google Search tools catalogued and risk-classified — across an index of 42,500+ MCP servers.