AI agents call get_standard_sample to retrieve information from GBMCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves or queries data (a sample of a standard document) without creating, modifying, deleting, or executing external operations. It is a Read operation. Severity is low because the blast radius of misuse is limited to unauthorized access to publicly available standard samples, with no irreversible consequences.
From the tool's definition Tool is a deprecated alias for 'samr_get_standard_sample', which appears to retrieve a sample of a standard document. The verb 'get' and context of 'standards metadata and downloading public standard documents' indicate data retrieval with no side effects.
Attacks that exploit this kind of access
Deprecated alias for samr_get_standard_sample. It is categorised as a Read tool in the GBMCP MCP Server, which means it retrieves data without modifying state.
Register the GB MCP server in PolicyLayer and add a rule for get_standard_sample: 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 GBMCP. Nothing to install.
get_standard_sample 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 get_standard_sample 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 get_standard_sample. 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.
get_standard_sample is provided by the GB MCP server (loydgik/gbmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
get_standard_sample is one line of GB'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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