fhfa_hpi_trend

SERVERLivedatalink SOURCEhttps://livedatalink.ai/mcp

Low RISK CLASS

Category Read

Parameters 61 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-blackboxfoundry-livedatalink/fhfa-hpi-trend.md

WHAT IT DOES

What fhfa_hpi_trend does on Livedatalink

AI agents call fhfa_hpi_trend to retrieve information from Livedatalink without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Parameter	Type	Required	Description
`place`	string	Yes	Exact FHFA place_id or geography name, such as 'CA', 'California', a 5-digit CBSA id, or an FHFA metro name.
`frequency`	string	—	Observation frequency. Default quarterly.
`hpi_flavor`	string	—	FHFA index flavor. Default purchase-only.
`index_basis`	string	—	Index column to use. Default seasonally_adjusted.
`geography_level`	string	—	Optional exact FHFA geography level to disambiguate state, metro, division, or national series.
`response_format`	string	—	Human-readable markdown or machine-readable JSON. Default markdown.

Parameters from the server's own tool schema.

RISK

Why fhfa_hpi_trend is rated Low

Even though fhfa_hpi_trend only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs fhfa_hpi_trend safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Livedatalink, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For fhfa_hpi_trend, this is the rule to start with:

fhfa_hpi_trend Allowed

fhfa_hpi_trend is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "fhfa_hpi_trend": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Livedatalink, apply this rule, and every fhfa_hpi_trend call is checked against it from then on.

FAQ

Questions about fhfa_hpi_trend

What does the fhfa_hpi_trend tool do? +

Summarize the latest FHFA HPI trend for one US geography from the self-hosted official series. Returns latest index, previous-period, one-year and five-year changes, five-year CAGR, recent direction, stable geography identifiers, and provenance. Use this for 'how fast are home prices rising in Texas?', 'is the Miami HPI falling?', or as the public-data corroboration leg for a realestate_market_screen. Not a forecast, appraisal, or investment recommendation. It is categorised as a Read tool in the Livedatalink MCP Server, which means it retrieves data without modifying state.

What parameters does fhfa_hpi_trend accept? +

fhfa_hpi_trend accepts 6 parameters: place, frequency, hpi_flavor, index_basis, geography_level, response_format. Required: place. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on fhfa_hpi_trend? +

Register the Livedatalink MCP server in PolicyLayer and add a rule for fhfa_hpi_trend: 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 Livedatalink. Nothing to install.

What risk level is fhfa_hpi_trend? +

fhfa_hpi_trend is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit fhfa_hpi_trend? +

Yes. Add a rate_limit block to the fhfa_hpi_trend 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.

How do I block fhfa_hpi_trend completely? +

Set action: deny in the PolicyLayer policy for fhfa_hpi_trend. 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.

What MCP server provides fhfa_hpi_trend? +

fhfa_hpi_trend is provided by the Livedatalink MCP server (https://livedatalink.ai/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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