AI agents use update_group to create or update resources in Seven — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Seven environment.
This tool modifies an existing contact group by updating its name. The operation is reversible (the name can be changed back), so it falls under Write rather than Destructive. The severity is medium because while the modification is non-destructive, it could affect contact organization and potentially disrupt workflow if misused by an agent.
From the tool's definition Tool name 'update_group' combined with description 'Update a contact group (only name can be updated)' indicates modification of existing data. The word 'Update' is a classic write operation.
Attacks that exploit this kind of access
Update a contact group (only name can be updated). It is categorised as a Write tool in the Seven MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Seven MCP server in PolicyLayer and add a rule for update_group: 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 Seven. Nothing to install.
update_group 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_group 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_group. 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_group is provided by the Seven MCP server (seven-io/seven-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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