AI agents call list_runs to retrieve information from Testrail without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves test run data from TestRail without modifying, deleting, or executing anything. It is a straightforward read operation that returns information for inspection. The blast radius of misuse is minimal—an agent could only access or enumerate existing test runs, which poses no security or operational risk.
From the tool's definition Tool name 'list_runs' and description 'List test runs in a project' indicate a retrieval operation with no modification or execution of external code.
Attacks that exploit this kind of access
List test runs in a project. It is categorised as a Read tool in the Testrail MCP Server, which means it retrieves data without modifying state.
Register the Testrail MCP server in PolicyLayer and add a rule for list_runs: 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 Testrail. Nothing to install.
list_runs 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 list_runs 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 list_runs. 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.
list_runs is provided by the Testrail MCP server (sergey-bl/testrail-mcp). 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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