Gets all values for a given attribute on a list entry. If the attribute is historic, this endpoint has the ability to return all historic values using the \
AI agents call getv2listsentriesattributesvalues to retrieve information from Attio without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a read-only operation that retrieves attribute values from list entries. It queries and returns data without side effects, making it a Read category tool with low severity since it only accesses information without capability to modify, delete, or execute operations.
From the tool's definition Tool name 'getv2listsentriesattributesvalues' and description 'Gets all values for a given attribute on a list entry' indicate data retrieval with no modification or deletion.
Documented attack patterns abuse exactly the kind of access getv2listsentriesattributesvalues gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Attio, and nothing reaches the server without passing your rules. This is the rule we recommend for getv2listsentriesattributesvalues:
{
"version": "1",
"default": "deny",
"tools": {
"getv2listsentriesattributesvalues": {}
}
}getv2listsentriesattributesvalues is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Gets all values for a given attribute on a list entry. If the attribute is historic, this endpoint has the ability to return all historic values using the \. It is categorised as a Read tool in the Attio MCP Server, which means it retrieves data without modifying state.
Register the Attio MCP server in PolicyLayer and add a rule for getv2listsentriesattributesvalues: 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 Attio. Nothing to install.
getv2listsentriesattributesvalues 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 getv2listsentriesattributesvalues 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 getv2listsentriesattributesvalues. 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.
getv2listsentriesattributesvalues is provided by the Attio MCP server (itsbrex/attio-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Attio, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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57 Attio tools catalogued and risk-classified — across an index of 43,000+ MCP servers.