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robcerda

RentCast MCP Server

by robcerda

get_property_record_by_id

Retrieve detailed property information using a specific ID to access valuation data, rent estimates, and market statistics from the RentCast API.

Instructions

Get a specific property record by ID.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
property_idYes
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries full burden but only states the basic action. It doesn't disclose behavioral traits such as whether it's a read-only operation, error handling for invalid IDs, response format, or any rate limits, which are critical for a tool with undocumented parameters.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, clear sentence with zero waste, making it appropriately sized and front-loaded. Every word contributes to the core purpose without unnecessary details.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's complexity (single parameter but no schema coverage), lack of annotations, and no output schema, the description is incomplete. It fails to provide enough context for effective use, such as return values, error cases, or how it differs from similar tools.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description must compensate but adds no meaning beyond the schema. It doesn't explain what 'property_id' represents (e.g., format, source, or constraints), leaving the single parameter undocumented in both schema and description.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose3/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description states the action ('Get') and resource ('property record by ID'), which provides a basic purpose. However, it lacks specificity about what a 'property record' contains and doesn't differentiate from siblings like 'get_property_records' (plural) or 'get_property_data', making it vague in context.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance is provided on when to use this tool versus alternatives. It doesn't mention prerequisites (e.g., needing a valid ID), exclusions, or comparisons to siblings like 'get_property_listings' or 'get_rental_listing_by_id', leaving usage unclear.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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