Retrieve the version history of an agent.
AI agents call retell_get_agent_versions to retrieve information from Retell AI MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves version history information about an agent—a pure data query with no side effects, no code execution, no data modification, and no irreversible operations. It falls squarely within the Read category. The low severity reflects minimal risk; an attacker gaining access could enumerate agent versions but cannot modify, delete, or execute operations.
From the tool's definition Tool name 'retell_get_agent_versions' and description 'Retrieve the version history of an agent' indicate a read operation that queries historical data without modifying or executing anything.
Attacks that exploit this kind of access
Retrieve the version history of an agent. It is categorised as a Read tool in the Retell AI MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Retell AI MCP Server MCP server in PolicyLayer and add a rule for retell_get_agent_versions: 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 Retell AI MCP Server. Nothing to install.
retell_get_agent_versions 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 retell_get_agent_versions 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 retell_get_agent_versions. 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.
retell_get_agent_versions is provided by the Retell AI MCP Server MCP server (itsanamune/retellsimp). 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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