update_retell_llm
Update a Retell LLM response engine
This record as markdown: /tools/freshdesk/update-retell-llm.md
What update_retell_llm does on Freshdesk
AI agents use update_retell_llm to create or update resources in Freshdesk, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Freshdesk environment.
Why update_retell_llm is rated Medium
The tool modifies (updates) existing data—specifically an LLM response engine configuration—which is a reversible write operation. It does not delete, execute arbitrary code, move money, or retrieve data. Severity is medium because misconfigured LLM responses could affect customer interactions or service quality, but the change is reversible and the blast radius is limited to one system component.
From the tool's definition Tool name 'update_retell_llm' and description 'Update a Retell LLM response engine' indicate modification of existing configuration or settings for a language model system.
Attacks that exploit this kind of access
The rule that runs update_retell_llm safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Freshdesk, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For update_retell_llm, this is the rule to start with:
update_retell_llm stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Freshdesk, apply this rule, and every update_retell_llm call is checked against it from then on.
Questions about update_retell_llm
Update a Retell LLM response engine. It is categorised as a Write tool in the Freshdesk MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Freshdesk MCP server in PolicyLayer and add a rule for update_retell_llm: 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 Freshdesk. Nothing to install.
update_retell_llm is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the update_retell_llm 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 update_retell_llm. 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.
update_retell_llm is provided by the Freshdesk MCP server (@mindstone-engineering/mcp-server-freshdesk). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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