parcel_search
Search property parcels by street address and get assessed value, land use, and most recent sale for each match. Coverage: Maryland statewide (all 24 jurisdictions, includes sale prices) and Harris County, TX / Houston (appraised value only, no sale prices since Texas is a non-disclosure state). ...
This record as markdown: /tools/io-github-blackboxfoundry-livedatalink/parcel-search.md
What parcel_search does on Livedatalink
AI agents call parcel_search 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 |
|---|---|---|---|
limit | number | — | Max rows (default 10, max 50). |
query | string | Yes | Street address fragment, e.g. '100 Main St' or 'Charles St'. |
state | string | — | 2-letter state code. Coverage: 'MD' (Maryland statewide) or 'TX' (Harris County / Houston only). Defaults to MD. |
county | string | — | Optional county name to narrow results, e.g. 'Baltimore', 'Montgomery'. |
Parameters from the server's own tool schema.
Why parcel_search is rated Low
This tool performs a search query that retrieves publicly available property information without creating, modifying, deleting, or executing any operations. The blast radius of misuse is minimal—an agent could retrieve property valuation data, but cannot alter records, execute code, delete data, or commit financial transactions.
From the tool's definition Tool description states it "Search[es] property parcels" and "Returns valuation and characteristics only". The action is retrieval of public real estate data (assessed value, land use, sale prices) with no modification capabilities.
Attacks that exploit this kind of access
The rule that runs parcel_search 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 parcel_search, this is the rule to start with:
parcel_search is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Livedatalink, apply this rule, and every parcel_search call is checked against it from then on.
Questions about parcel_search
Search property parcels by street address and get assessed value, land use, and most recent sale for each match. Coverage: Maryland statewide (all 24 jurisdictions, includes sale prices) and Harris County, TX / Houston (appraised value only, no sale prices since Texas is a non-disclosure state). Returns valuation and characteristics only, not owner names. Use parcel_details for the full record. It is categorised as a Read tool in the Livedatalink MCP Server, which means it retrieves data without modifying state.
parcel_search accepts 4 parameters: limit, query, state, county. Required: query. The full parameter table on this page comes from the server's own tool schema.
Register the Livedatalink MCP server in PolicyLayer and add a rule for parcel_search: 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.
parcel_search 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 parcel_search 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 parcel_search. 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.
parcel_search 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.
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