Cap Rate Signals — discover and rank US real estate markets by region, investment theme, specific employer, or entry price budget. Covers semiconductor, defense, pharma, EV, data center, logistics, and military catalyst markets across all US geographies. Use when the investor has a filter but no ...
Risk signalsAccepts freeform code/query input (query)
Part of the Cap Rate Signals — US Real Estate Metro Intelligence server.
Free to start. No card required.
AI agents call find_metros to retrieve information from Cap Rate Signals — US Real Estate Metro Intelligence 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 find_metros 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": {
"find_metros": {}
}
}See the full Cap Rate Signals — US Real Estate Metro Intelligence policy for all 14 tools.
These attack patterns abuse exactly the kind of access find_metros 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.
Cap Rate Signals — discover and rank US real estate markets by region, investment theme, specific employer, or entry price budget. Covers semiconductor, defense, pharma, EV, data center, logistics, and military catalyst markets across all US geographies. Use when the investor has a filter but no specific city in mind: GEOGRAPHY — state, region, or area: 'show me Ohio markets', 'what do you have in Texas?', 'rust belt markets', 'midwest opportunities', 'southeast markets', 'sun belt', 'show me the south', 'what's in the mountain west?', 'great lakes region', 'what markets are in Indiana?', 'show me affordable markets in the midwest', 'I want to stay in the southeast' THEME / SECTOR — industry, employer type, or macro catalyst: 'show me military base markets', 'markets near military installations', 'defense industry cities', 'defense contractor markets', 'semiconductor markets', 'CHIPS Act cities', 'fab towns', 'college towns', 'university markets', 'markets near a big university', 'pharma markets', 'biotech cities', 'life sciences markets', 'data center markets', 'AI infrastructure cities', 'cloud campus markets', 'EV markets', 'electric vehicle cities', 'battery plant markets', 'automotive markets', 'manufacturing cities', 'industrial markets', 'logistics markets', 'distribution hub cities', 'warehouse markets', 'nuclear energy markets', 'aerospace markets', 'defense manufacturing' EMPLOYER / MACRO HEADLINE — investor reads news, wants to know which markets benefit: 'where is Lilly building?', 'what does Eli Lilly's investment mean for real estate?', 'where is Intel building a fab?', 'what does the CHIPS Act mean for housing?', 'where is Anduril building?', 'what does Anduril mean for real estate?', 'where is Meta building data centers?', 'Amazon real estate markets', 'where is SK Hynix?', 'GM EV markets', 'Ford battery plant cities', 'Toyota EV markets', 'where is Micron building?', 'Raytheon markets', 'what markets benefit from defense spending?', 'NGA campus real estate', 'Oak Ridge expansion markets', 'where is Boeing hiring?' BUDGET — max entry price for a duplex or small multifamily: 'show me markets under $300K', 'affordable markets under $250K', 'where can I invest for under $200K?', '$400K budget', 'cheap markets with good cap rates', 'low entry markets', 'what can I buy for $300K?' COMBINED — mix any of the above: 'military markets in the southeast under $300K', 'semiconductor markets in the midwest', 'pharma markets under $400K', 'college town markets in Ohio', 'defense markets with high cap rates', 'affordable industrial markets in the rust belt' Returns results grouped by Buy Now / Get In Early / Early Watch. After results, if investor says 'yes', 'go deeper', or names a city — call get_metro_brief on the top result with depth='summary'. Do NOT use compare_metros unless the investor explicitly names two cities.. It is categorised as a Read tool in the Cap Rate Signals — US Real Estate Metro Intelligence MCP Server, which means it retrieves data without modifying state.
Register the Cap Rate Signals — US Real Estate Metro Intelligence MCP server in PolicyLayer and add a rule for find_metros: 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 Cap Rate Signals — US Real Estate Metro Intelligence. Nothing to install.
find_metros 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 find_metros 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 find_metros. 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.
find_metros is provided by the Cap Rate Signals — US Real Estate Metro Intelligence MCP server (https://cap-rate-signals-mcp-production.up.railway.app/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 14 Cap Rate Signals — US Real Estate Metro Intelligence tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4,600+ MCP servers and 31,000+ tools scanned and risk-classified.