Validate a Google Play closed testing opt-in link before placing an order. Checks that the link is correctly formatted and accessible on the Play Store. Always validate the link first before calling linktest_order to catch issues early. Args: - opt_in_link (string): The closed testing opt-in URL ...
AI agents call linktest_validate to retrieve information from Linktest without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and validates data (a URL's format and accessibility) without creating, modifying, deleting, or executing any operations. It is explicitly recommended to be called before linktest_order to catch issues early, confirming its role as a precautionary read operation. No data is created, modified, or destroyed, and no external operations are triggered.
From the tool's definition Tool description states it 'Validate[s] a Google Play closed testing opt-in link' and 'Checks that the link is correctly formatted and accessible on the Play Store.' The verb 'validate' and 'checks' indicate read-only verification operations with no side…
Attacks that exploit this kind of access
Validate a Google Play closed testing opt-in link before placing an order. Checks that the link is correctly formatted and accessible on the Play Store. Always validate the link first before calling linktest_order to catch issues early. Args: - opt_in_link (string): The closed testing opt-in URL from Google Play Console. Format: https://play.google.com/store/apps/details?id={packageName} ← copy from Play Console → Testing → Closed Testing → Testers tab →. It is categorised as a Read tool in the Linktest MCP Server, which means it retrieves data without modifying state.
Register the Linktest MCP server in PolicyLayer and add a rule for linktest_validate: 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 Linktest. Nothing to install.
linktest_validate 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 linktest_validate 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 linktest_validate. 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.
linktest_validate is provided by the Linktest MCP server (linktest-mcp-server). 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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