Reference / metadata for the PIP dataset. table="versions" lists available data releases & PPP rounds; table="aux_list" lists all auxiliary tables; any other value (e.g. "countries", "regions", "poverty_lines", "indicators", "dictionary") returns that auxiliary table. Use to look up valid country...
Part of the Worldbank Poverty server.
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AI agents call list_reference to retrieve information from Worldbank Poverty without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though list_reference only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"list_reference": {}
}
}See the full Worldbank Poverty policy for all 23 tools.
These attack patterns abuse exactly the kind of access list_reference gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Reference / metadata for the PIP dataset. table="versions" lists available data releases & PPP rounds; table="aux_list" lists all auxiliary tables; any other value (e.g. "countries", "regions", "poverty_lines", "indicators", "dictionary") returns that auxiliary table. Use to look up valid country codes, region mappings, or supported indicators.. It is categorised as a Read tool in the Worldbank Poverty MCP Server, which means it retrieves data without modifying state.
Register the Worldbank Poverty MCP server in PolicyLayer and add a rule for list_reference: 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 Worldbank Poverty. Nothing to install.
list_reference 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 list_reference 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 list_reference. 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.
list_reference is provided by the Worldbank Poverty MCP server (https://gateway.pipeworx.io/worldbank-poverty/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 23 Worldbank Poverty tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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