properties_valuation_agent_quotingQuoting accuracy of the property's current listing agency — cohort, median guide-vs-sold deviation, underquote rate and its 5 most-recent tracked sales. Only while the property is listed for sale with a tracked agency.
Price: 50¢ per call.
| Name | Required | Description | Default |
|---|---|---|---|
| gnaf_id | Yes |
Changes observed during successful MCP inspections.
Output schema / (root)Previous value: -{
- "properties": {
- "available": {
- "anyOf": [
- {
- "type": "boolean"
- },
- {
- "type": "null"
- }
- ],
- "description": "`false` on no-data responses. Omitted on success — branch on `data !== null` if you want a single discriminator.",
- "title": "Available"
- },
- "data": {
- "anyOf": [
- {
- "additionalProperties": true,
- "description": "Quoting accuracy of the property's CURRENT listing agency.\n\nOnly available while the property is for sale with a tracked agency —\notherwise the endpoint reports no data.",
- "example": {
- "agency_name": "Elders Mt Gambier RLA 62833",
- "asking_price": 450000,
- "cohort": "Severe Underquoter",
- "likely_sale_price": 523350,
- "median_deviation_pct": 16.3,
- "recent_sales": [
- {
- "address": "12 Chauvel Street, Mount Gambier",
- "diff_pct": 53.9,
- "guide_price": 287500,
- "sold_date": "2026-03-19",
- "sold_price": 442500
- }
- ],
- "total_sales": 4,
- "underquote_rate_pct": 50
- },
- "properties": {
- "agency_name": {
- "description": "Current listing agency.",
- "title": "Agency Name",
- "type": "string"
- },
- "asking_price": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "description": "Current asking guide for this listing (AUD).",
- "title": "Asking Price"
- },
- "cohort": {
- "description": "Quoting-behaviour cohort label (e.g. 'Severe Underquoter').",
- "title": "Cohort",
- "type": "string"
- },
- "likely_sale_price": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "description": "Asking guide adjusted by the agency's median deviation (AUD).",
- "title": "Likely Sale Price"
- },
- "median_deviation_pct": {
- "description": "Median sold-vs-guide deviation across tracked sales (%).",
- "title": "Median Deviation Pct",
- "type": "number"
- },
- "recent_sales": {
- "description": "Up to 5 most-recent tracked sales.",
- "items": {
- "additionalProperties": true,
- "description": "One recent transparent sale by the listing agency.",
- "example": {
- "address": "12 Chauvel Street, Mount Gambier",
- "diff_pct": 53.9,
- "guide_price": 287500,
- "sold_date": "2026-03-19",
- "sold_price": 442500
- },
- "properties": {
- "address": {
- "description": "Street address, suburb.",
- "title": "Address",
- "type": "string"
- },
- "diff_pct": {
- "anyOf": [
- {
- "type": "number"
- },
- {
- "type": "null"
- }
- ],
- "description": "Sold vs guide deviation (%).",
- "title": "Diff Pct"
- },
- "guide_price": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "description": "Advertised guide (midpoint, AUD).",
- "title": "Guide Price"
- },
- "sold_date": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ],
- "description": "Sale date (YYYY-MM-DD).",
- "title": "Sold Date"
- },
- "sold_price": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "description": "Achieved sale price (AUD).",
- "title": "Sold Price"
- }
- },
- "required": [
- "address"
- ],
- "title": "AgentRecentSale",
- "type": "object"
- },
- "title": "Recent Sales",
- "type": "array"
- },
- "total_sales": {
- "description": "Number of tracked transparent sales.",
- "title": "Total Sales",
- "type": "integer"
- },
- "underquote_rate_pct": {
- "description": "Share of tracked sales that sold above guide (%).",
- "title": "Underquote Rate Pct",
- "type": "number"
- }
- },
- "required": [
- "agency_name",
- "cohort",
- "median_deviation_pct",
- "underquote_rate_pct",
- "total_sales",
- "recent_sales"
- ],
- "title": "AgentQuoting",
- "type": "object"
- },
- {
- "type": "null"
- }
- ],
- "description": "The endpoint's payload, or `null` when Microburbs has no value."
- },
- "message": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ],
- "description": "Human-readable explanation. Omitted on success.",
- "title": "Message"
- },
- "reason": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ],
- "description": "Machine-readable slug naming the no-data condition (e.g. `no_avm_for_GANSW704074813`). Stable per endpoint. Omitted on success.",
- "title": "Reason"
- }
- },
- "title": "ApiResponse[AgentQuoting]",
- "type": "object",
- "x-fastmcp-top-level-schema": "ApiResponse_AgentQuoting_"
-}New value: +nullDoes the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnly, idempotent, and non-destructive. The description adds the cost (50¢ per call) and the condition that the property must be listed with a tracked agency, which implies potential failure or empty response otherwise. This is additional behavioral context not covered by annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is two sentences plus a price line, front-loading the purpose and listing the output metrics. No wasted words. Efficiently structured.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple read-only tool with one parameter and no output schema, the description gives a good overview of what it returns and when it works, but it lacks explanation of the gnaf_id parameter. It also doesn't mention any error cases or response format details. Given the tool's simplicity, it is reasonably complete but could be better.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The schema has only gnaf_id with no description, and the description does not explain what gnaf_id is or its format. With 0% schema coverage, the description should compensate but doesn't. It only mentions the condition, not the parameter itself.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states that the tool reports the quoting accuracy of the property's current listing agency, listing specific metrics (cohort, median guide-vs-sold deviation, underquote rate, and 5 most-recent sales). It also includes a condition (only while listed), which distinguishes it from other valuation tools that focus on AVM, land values, etc.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
It provides a clear precondition: only while the property is listed for sale with a tracked agency. However, it does not explicitly compare with alternatives like properties_valuation_avm or properties_valuation_all, so it leaves it to the agent to infer when this is the right tool. It gives context but no explicit exclusions.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Add one secure layer between your agents and this server.