This record as markdown: /tools/io-github-polnikale-sequenzy-mcp/update-list.md
What update_list does on Sequenzy Mcp
AI agents use update_list to create or update resources in Sequenzy Mcp, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Sequenzy Mcp environment.
Why update_list is rated Medium
This tool modifies a subscriber list, which affects stored marketing data that can be used for campaigns. This is reversible (lists can be re-edited or restored) and does not delete data, making it Write rather than Destructive.
From the tool's definition Tool name 'update_list' and description 'Update a subscriber list' indicate modification of existing list data.
Attacks that exploit this kind of access
The rule that runs update_list safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Sequenzy Mcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For update_list, this is the rule to start with:
update_list 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 Sequenzy Mcp, apply this rule, and every update_list call is checked against it from then on.
Questions about update_list
Update a subscriber list. It is categorised as a Write tool in the Sequenzy Mcp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Sequenzy MCP server in PolicyLayer and add a rule for update_list: 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 Sequenzy Mcp. Nothing to install.
update_list 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_list 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_list. 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_list is provided by the Sequenzy MCP server (Sequenzy/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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