Single AircraftList row by id (fast header lookup). Returns null if missing. Use get_aircraft_detail for charts and full derived stats.
| Name | Required | Description | Default |
|---|---|---|---|
| aircraftId | Yes |
| Name | Required | Description | Default |
|---|---|---|---|
| data | Yes |
Changes observed during successful MCP inspections.
Output schema / properties / data / anyOfPrevious value: -[
- {
- "additionalProperties": {},
- "properties": {
- "cn": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ]
- },
- "country": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ]
- },
- "deregisteredAt": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ]
- },
- "firstFlight": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ]
- },
- "icaoType": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ]
- },
- "id": {
- "type": "string"
- },
- "lastFlight": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ]
- },
- "manufacturer": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ]
- },
- "model": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ]
- },
- "notes": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ]
- },
- "operator": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ]
- },
- "owner": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ]
- },
- "ownerId": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ]
- },
- "ownop": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ]
- },
- "reg": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ]
- },
- "regDash": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ]
- },
- "registeredAt": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ]
- },
- "totalDistance": {
- "anyOf": [
- {
- "type": "number"
- },
- {
- "type": "null"
- }
- ]
- },
- "totalFlights": {
- "anyOf": [
- {
- "type": "number"
- },
- {
- "type": "null"
- }
- ]
- },
- "usedBy": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ]
- },
- "visitedAirports": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ]
- },
- "visitedCountries": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ]
- },
- "wikidataId": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ]
- },
- "year": {
- "anyOf": [
- {
- "type": "number"
- },
- {
- "type": "null"
- }
- ]
- }
- },
- "required": [
- "id",
- "reg",
- "regDash",
- "icaoType",
- "year",
- "manufacturer",
- "model",
- "ownop",
- "totalFlights",
- "totalDistance",
- "firstFlight",
- "lastFlight",
- "visitedCountries",
- "visitedAirports",
- "usedBy",
- "operator",
- "notes",
- "wikidataId",
- "owner",
- "ownerId",
- "country",
- "registeredAt",
- "deregisteredAt",
- "cn"
- ],
- "type": "object"
- },
- {
- "type": "null"
- }
-]New value: +[
+ {
+ "additionalProperties": {},
+ "properties": {
+ "cn": {
+ "type": [
+ "string",
+ "null"
+ ]
+ },
+ "country": {
+ "type": [
+ "string",
+ "null"
+ ]
+ },
+ "deregisteredAt": {
+ "type": [
+ "string",
+ "null"
+ ]
+ },
+ "firstFlight": {
+ "type": [
+ "string",
+ "null"
+ ]
+ },
+ "icaoType": {
+ "type": [
+ "string",
+ "null"
+ ]
+ },
+ "id": {
+ "type": "string"
+ },
+ "lastFlight": {
+ "type": [
+ "string",
+ "null"
+ ]
+ },
+ "manufacturer": {
+ "type": [
+ "string",
+ "null"
+ ]
+ },
+ "model": {
+ "type": [
+ "string",
+ "null"
+ ]
+ },
+ "notes": {
+ "type": [
+ "string",
+ "null"
+ ]
+ },
+ "operator": {
+ "type": [
+ "string",
+ "null"
+ ]
+ },
+ "owner": {
+ "type": [
+ "string",
+ "null"
+ ]
+ },
+ "ownerId": {
+ "type": [
+ "string",
+ "null"
+ ]
+ },
+ "ownop": {
+ "type": [
+ "string",
+ "null"
+ ]
+ },
+ "reg": {
+ "type": [
+ "string",
+ "null"
+ ]
+ },
+ "regDash": {
+ "type": [
+ "string",
+ "null"
+ ]
+ },
+ "registeredAt": {
+ "type": [
+ "string",
+ "null"
+ ]
+ },
+ "totalDistance": {
+ "type": [
+ "number",
+ "null"
+ ]
+ },
+ "totalFlights": {
+ "type": [
+ "number",
+ "null"
+ ]
+ },
+ "usedBy": {
+ "type": [
+ "string",
+ "null"
+ ]
+ },
+ "visitedAirports": {
+ "type": [
+ "string",
+ "null"
+ ]
+ },
+ "visitedCountries": {
+ "type": [
+ "string",
+ "null"
+ ]
+ },
+ "wikidataId": {
+ "type": [
+ "string",
+ "null"
+ ]
+ },
+ "year": {
+ "type": [
+ "number",
+ "null"
+ ]
+ }
+ },
+ "required": [
+ "id",
+ "reg",
+ "regDash",
+ "icaoType",
+ "year",
+ "manufacturer",
+ "model",
+ "ownop",
+ "totalFlights",
+ "totalDistance",
+ "firstFlight",
+ "lastFlight",
+ "visitedCountries",
+ "visitedAirports",
+ "usedBy",
+ "operator",
+ "notes",
+ "wikidataId",
+ "owner",
+ "ownerId",
+ "country",
+ "registeredAt",
+ "deregisteredAt",
+ "cn"
+ ],
+ "type": "object"
+ },
+ {
+ "type": "null"
+ }
+]Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnly, non-destructive, closed-world, so the safety profile needs no restating. The description still adds real behavioral context beyond the annotations: a missing id yields null rather than an error, and the result is only the list row without derived stats or charts. It stops short of noting performance/auth characteristics or the size of the row, so not a 5.
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?
Three short sentences, no filler: what it returns, the null edge case, and the sibling alternative. The most important qualification (fast header-only lookup) is front-loaded.
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 single-parameter read-only lookup with an output schema present, the description covers the remaining gaps: the null-on-missing case, the shallow row shape, and where to go for richer data. Nothing needed to call it correctly is missing.
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?
One parameter (aircraftId) with 0% schema description coverage, so the description must compensate. 'By id' clarifies that the id is the AircraftList row identifier, but it adds no format, source, or example, and the parameter name is largely self-explanatory. Adequate but thin.
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?
States a specific verb (get) and precise resource (a single AircraftList row) keyed by id, and explicitly scopes it as a 'fast header lookup'. It also names the sibling get_aircraft_detail and what that sibling is for, so the agent can distinguish the two without opening either schema.
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?
Explicitly routes the agent: use this for lightweight header lookups, use get_aircraft_detail for charts and full derived stats. That names the alternative and the condition that selects it, which is exactly the when/when-not guidance expected.
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.