Retrieve migration summary data across all available year pairs for a county or state. Returns an array of yearly migration summaries sorted by year pair, each including net returns, net exemptions, net AGI, and inflow/outflow breakdowns. AGI values are in thousands of dollars. Source: IRS Statis...
AI agents call get_migration_trends to retrieve information from loc8n Geographic Data without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
fips | string | Yes | FIPS code — 5 digits for county, 2 for state |
level | string | Yes | Geographic level: county or state |
Parameters from the server's own tool schema.
This tool performs a straightforward data retrieval of aggregate migration and demographic statistics (net returns, exemptions, AGI, inflow/outflow). It has no side effects, cannot modify data, execute code, or trigger external operations. The AGI values returned are aggregated public statistics, not sensitive personal financial information.
From the tool's definition Tool name is 'get_migration_trends' and description states it 'Retrieve[s] migration summary data' — a read operation that queries historical migration statistics from IRS data without any create, modify, delete, or execute actions.
Attacks that exploit this kind of access
Retrieve migration summary data across all available year pairs for a county or state. Returns an array of yearly migration summaries sorted by year pair, each including net returns, net exemptions, net AGI, and inflow/outflow breakdowns. AGI values are in thousands of dollars. Source: IRS Statistics of Income. It is categorised as a Read tool in the loc8n Geographic Data MCP Server, which means it retrieves data without modifying state.
get_migration_trends accepts 2 parameters: fips, level. Required: fips, level. The full parameter table on this page comes from the server's own tool schema.
Register the loc8n Geographic Data MCP server in PolicyLayer and add a rule for get_migration_trends: 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 loc8n Geographic Data. Nothing to install.
get_migration_trends 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_migration_trends 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_migration_trends. 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_migration_trends is provided by the loc8n Geographic Data MCP server (gener8v/gener8v.mcp.geographic-data). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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