Get most recent provisional mortality data including COVID and other causes. Returns provisional death counts from the NVSS, covering major cause groups including COVID-19, respiratory diseases, circulatory diseases, and more. Data is updated weekly and covers the most recent periods. Args: state...
Part of the CDC Mortality (WONDER) server.
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AI agents call get_provisional_mortality to retrieve information from CDC Mortality (WONDER) 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 get_provisional_mortality 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": {
"get_provisional_mortality": {}
}
}See the full CDC Mortality (WONDER) policy for all 5 tools.
These attack patterns abuse exactly the kind of access get_provisional_mortality 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.
Get most recent provisional mortality data including COVID and other causes. Returns provisional death counts from the NVSS, covering major cause groups including COVID-19, respiratory diseases, circulatory diseases, and more. Data is updated weekly and covers the most recent periods. Args: state: Filter by state/jurisdiction name (e.g. 'New York', 'Florida'). Case-insensitive. Returns all jurisdictions if not specified. cause_group: Filter by cause group (e.g. 'COVID-19', 'Respiratory', 'Circulatory', 'Malignant neoplasms'). Partial match supported. Returns all cause groups if not specified. limit: Maximum number of records to return (default 50, max 1000).. It is categorised as a Read tool in the CDC Mortality (WONDER) MCP Server, which means it retrieves data without modifying state.
Register the CDC Mortality (WONDER) MCP server in PolicyLayer and add a rule for get_provisional_mortality: 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 CDC Mortality (WONDER). Nothing to install.
get_provisional_mortality 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 get_provisional_mortality 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 get_provisional_mortality. 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.
get_provisional_mortality is provided by the CDC Mortality (WONDER) MCP server (https://mcp.olyport.com/cdc-wonder/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 5 CDC Mortality (WONDER) tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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