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AUTO411 Vehicle Intelligence

by io.github.simonizer69
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Get Vehicle Efficiency

get_vehicle_efficiency
Read-only

Use this for available EPA city, highway, and combined MPG, MPGe, range, fuel-cost, emissions, and related efficiency facts after vehicle identity resolves safely. Ambiguous EPA variants remain NEEDS_IDENTITY.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
vinNoFull 17-character VIN. Use VIN by itself as the identity path, or omit it and provide year, make, and model.
makeNoVehicle make. Required with year and model when VIN is not provided.
trimNoOptional identity refinement. Use only an explicitly known trim.
yearNoModel year. Required with make and model when VIN is not provided.
modelNoCustomer-facing model family. Required with year and make when VIN is not provided.
engineNoOptional identity refinement. Use only an explicitly known engine.
drivetrainNoOptional identity refinement. Use only an explicitly known drivetrain.
configuration_idNoAUTO411 configuration identifier returned by a prior NEEDS_IDENTITY response.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
errorNo
choicesNo
conflictsNo
candidatesNo
efficiencyNo
fact_scopeNo
choice_countNo
completenessNo
missing_fieldsNo
evidence_statusNo
configuration_idNo
agent_instructionYes
canonical_vehicleNo
resolution_statusYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed9 schema fields changed
    • addedInput schema / properties / configuration_id / description
      Added value: +"AUTO411 configuration identifier returned by a prior NEEDS_IDENTITY response."
    • addedInput schema / properties / drivetrain / description
      Added value: +"Optional identity refinement. Use only an explicitly known drivetrain."
    • addedInput schema / properties / engine / description
      Added value: +"Optional identity refinement. Use only an explicitly known engine."
    • addedInput schema / properties / make / description
      Added value: +"Vehicle make. Required with year and model when VIN is not provided."
    • addedInput schema / properties / model / description
      Added value: +"Customer-facing model family. Required with year and make when VIN is not provided."
    • addedInput schema / properties / trim / description
      Added value: +"Optional identity refinement. Use only an explicitly known trim."
    • changedInput schema / properties / vin / description
      Previous value: -"17-character VIN"New value: +"Full 17-character VIN. Use VIN by itself as the identity path, or omit it and provide year, make, and model."
    • addedInput schema / properties / year / description
      Added value: +"Model year. Required with make and model when VIN is not provided."
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "additionalProperties": {},
+  "properties": {
+    "agent_instruction": {
+      "type": "string"
+    },
+    "candidates": {
+      "items": {
+        "additionalProperties": {},
+        "propertyNames": {
+          "type": "string"
+        },
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "canonical_vehicle": {
+      "anyOf": [
+        {
+          "additionalProperties": {},
+          "properties": {
+            "configuration_id": {
+              "type": "number"
+            },
+            "drivetrain": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "engine": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "generation": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "identity": {
+              "additionalProperties": {
+                "type": [
+                  "string",
+                  "number",
+                  "boolean",
+                  "null"
+                ]
+              },
+              "propertyNames": {
+                "type": "string"
+              },
+              "type": "object"
+            },
+            "make": {
+              "type": "string"
+            },
+            "model": {
+              "type": "string"
+            },
+            "trim": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "year": {
+              "type": [
+                "number",
+                "string"
+              ]
+            }
+          },
+          "type": "object"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "choice_count": {
+      "maximum": 9007199254740991,
+      "minimum": 0,
+      "type": "integer"
+    },
+    "choices": {
+      "items": {
+        "additionalProperties": {},
+        "properties": {
+          "configuration_id": {
+            "type": "number"
+          },
+          "drivetrain": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "engine": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "evidence_status": {
+            "type": "string"
+          },
+          "generation": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "identity": {
+            "additionalProperties": {
+              "type": [
+                "string",
+                "number",
+                "boolean",
+                "null"
+              ]
+            },
+            "propertyNames": {
+              "type": "string"
+            },
+            "type": "object"
+          },
+          "trim": {
+            "type": [
+              "string",
+              "null"
+            ]
+          }
+        },
+        "required": [
+          "configuration_id"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "completeness": {
+      "type": "string"
+    },
+    "configuration_id": {
+      "type": [
+        "number",
+        "null"
+      ]
+    },
+    "conflicts": {
+      "items": {},
+      "type": "array"
+    },
+    "efficiency": {
+      "anyOf": [
+        {
+          "additionalProperties": {},
+          "properties": {
+            "annual_fuel_cost": {
+              "type": "number"
+            },
+            "city_mpg": {
+              "type": "number"
+            },
+            "city_mpge": {
+              "type": "number"
+            },
+            "co2_grams_per_mile": {
+              "type": "number"
+            },
+            "combined_mpg": {
+              "type": "number"
+            },
+            "combined_mpge": {
+              "type": "number"
+            },
+            "electric_range_miles": {
+              "type": "number"
+            },
+            "fuel_type": {
+              "type": "string"
+            },
+            "highway_mpg": {
+              "type": "number"
+            },
+            "highway_mpge": {
+              "type": "number"
+            },
+            "phev_blended_range_miles": {
+              "type": "number"
+            }
+          },
+          "type": "object"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "error": {
+      "additionalProperties": {},
+      "properties": {
+        "code": {
+          "type": "string"
+        },
+        "message": {
+          "type": "string"
+        },
+        "retryable": {
+          "type": "boolean"
+        }
+      },
+      "required": [
+        "code"
+      ],
+      "type": "object"
+    },
+    "evidence_status": {
+      "type": "string"
+    },
+    "fact_scope": {
+      "type": "string"
+    },
+    "missing_fields": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "resolution_status": {
+      "enum": [
+        "INVALID_INPUT",
+        "MATCHED_SINGLE",
+        "NEEDS_IDENTITY",
+        "NO_MATCH",
+        "UNAVAILABLE",
+        "SOURCE_UNAVAILABLE"
+      ],
+      "type": "string"
+    }
+  },
+  "required": [
+    "resolution_status",
+    "agent_instruction"
+  ],
+  "type": "object"
+}
  2. First observed

TDQS

A3.6/5.0
Behavior3/5

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

Annotations already declare readOnlyHint=true, openWorldHint=false, and destructiveHint=false, so the safety profile is covered. The description adds the identity-resolution precondition and the NEEDS_IDENTITY disambiguation outcome, which is genuine behavioral context, but it says nothing about return format, coverage gaps, or rate/availability behavior.

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

Conciseness4/5

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

Two sentences, front-loaded with the 'Use this for...' trigger, and no filler. The second sentence is terse and slightly cryptic ('remain NEEDS_IDENTITY') but carries actionable information rather than padding.

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

Completeness4/5

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

With an output schema present, the description need not explain return values, and the 100%-covered schema handles parameters. What remains is the identity precondition and the NEEDS_IDENTITY behavior, both of which the description supplies, making it essentially complete for an 8-param, 0-required read tool.

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

Parameters3/5

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

Schema description coverage is 100%, so the schema already fully documents all 8 identity parameters (VIN path vs year/make/model, optional trim/engine/drivetrain, configuration_id). The description adds no parameter-level syntax or format detail beyond the identity-resolution framing, so the baseline 3 applies.

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

Purpose4/5

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

The description names a specific resource domain (EPA city/highway/combined MPG, MPGe, range, fuel-cost, emissions) which clearly separates it from get_vehicle_safety, get_vehicle_fitment, and get_vehicle_specs. It states what the tool returns rather than restating the name. It stops short of explicitly naming a sibling as the alternative, so it lands at a solid 4 rather than 5.

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

Usage Guidelines4/5

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

'after vehicle identity resolves safely' gives a real precondition for invoking the tool, and 'Ambiguous EPA variants remain NEEDS_IDENTITY' tells the agent what to expect when resolution fails. It does not explicitly route to resolve_vehicle as the prerequisite or state when-not-to-use cases, so it is clear context without full alternatives coverage.

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

All AUTO411 Vehicle Intelligence toolsInspect
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