Agentic Dealer Network

List dealerships

network_directory

Read-onlyIdempotent

Directory of active ADN rooftops: slug, name, dealer group, OEM programs, location metadata, and per-rooftop manifest URL. Pass country=CA for Canadian dealers.

Input Schema

Name	Required	Description	Default
`limit`	No
`offset`	No
`country`	No	Market to search; rooftops in the other country are excluded. Prices are in that country's currency; the radius stays in miles.	US

Output Schema

Name	Required	Description
`data`	No
`error`	No	Unknown and foreign thread ids are deliberately indistinguishable: both return invalid_params with message "unknown thread_id" (anti-enumeration).
`freshness`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedOct 10, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "additionalProperties": false,
+  "properties": {
+    "data": {
+      "additionalProperties": false,
+      "properties": {
+        "market": {
+          "additionalProperties": false,
+          "properties": {
+            "country": {
+              "enum": [
+                "US",
+                "CA"
+              ],
+              "type": "string"
+            },
+            "currency": {
+              "type": "string"
+            },
+            "odometer_unit": {
+              "enum": [
+                "mi",
+                "km"
+              ],
+              "type": "string"
+            }
+          },
+          "required": [
+            "country",
+            "currency",
+            "odometer_unit"
+          ],
+          "type": "object"
+        },
+        "rooftops": {
+          "items": {
+            "additionalProperties": false,
+            "properties": {
+              "address": {
+                "maxLength": 200,
+                "type": "string"
+              },
+              "available_units": {
+                "description": "null when the rooftop is not part of network aggregation (network opt-out)",
+                "minimum": 0,
+                "type": [
+                  "integer",
+                  "null"
+                ]
+              },
+              "city": {
+                "maxLength": 100,
+                "type": "string"
+              },
+              "country": {
+                "enum": [
+                  "US",
+                  "CA"
+                ],
+                "type": "string"
+              },
+              "dealer_group": {
+                "additionalProperties": false,
+                "properties": {
+                  "name": {
+                    "maxLength": 200,
+                    "type": "string"
+                  },
+                  "slug": {
+                    "maxLength": 80,
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "name",
+                  "slug"
+                ],
+                "type": "object"
+              },
+              "freshness": {
+                "additionalProperties": false,
+                "properties": {
+                  "last_ingest_at": {
+                    "format": "date-time",
+                    "maxLength": 40,
+                    "type": [
+                      "string",
+                      "null"
+                    ]
+                  },
+                  "status": {
+                    "enum": [
+                      "fresh",
+                      "stale",
+                      "no_data"
+                    ]
+                  }
+                },
+                "required": [
+                  "status",
+                  "last_ingest_at"
+                ],
+                "type": "object"
+              },
+              "hours": {
+                "type": "object"
+              },
+              "latitude": {
+                "maximum": 90,
+                "minimum": -90,
+                "type": "number"
+              },
+              "limitations": {
+                "items": {
+                  "type": "string"
+                },
+                "type": "array"
+              },
+              "longitude": {
+                "maximum": 180,
+                "minimum": -180,
+                "type": "number"
+              },
+              "manifest_url": {
+                "maxLength": 300,
+                "type": "string"
+              },
+              "name": {
+                "maxLength": 200,
+                "type": "string"
+              },
+              "new_units": {
+                "description": "null when the rooftop is not part of network aggregation (network opt-out)",
+                "minimum": 0,
+                "type": [
+                  "integer",
+                  "null"
+                ]
+              },
+              "oem_programs": {
+                "items": {
+                  "maxLength": 80,
+                  "type": "string"
+                },
+                "maxItems": 20,
+                "type": "array"
+              },
+              "phone": {
+                "maxLength": 30,
+                "type": "string"
+              },
+              "price_median": {
+                "description": "null when the rooftop is not part of network aggregation (network opt-out)",
+                "minimum": 0,
+                "type": [
+                  "number",
+                  "null"
+                ]
+              },
+              "priced_count": {
+                "description": "null when the rooftop is not part of network aggregation (network opt-out)",
+                "minimum": 0,
+                "type": [
+                  "integer",
+                  "null"
+                ]
+              },
+              "slug": {
+                "maxLength": 80,
+                "type": "string"
+              },
+              "state": {
+                "maxLength": 50,
+                "type": "string"
+              },
+              "top_makes": {
+                "items": {
+                  "maxLength": 80,
+                  "type": "string"
+                },
+                "maxItems": 3,
+                "type": "array"
+              },
+              "used_units": {
+                "description": "null when the rooftop is not part of network aggregation (network opt-out)",
+                "minimum": 0,
+                "type": [
+                  "integer",
+                  "null"
+                ]
+              },
+              "website_url": {
+                "maxLength": 300,
+                "type": "string"
+              },
+              "zip": {
+                "maxLength": 20,
+                "type": "string"
+              }
+            },
+            "required": [
+              "name",
+              "slug",
+              "country",
+              "dealer_group",
+              "oem_programs",
+              "available_units",
+              "new_units",
+              "used_units",
+              "top_makes",
+              "priced_count",
+              "price_median",
+              "freshness"
+            ],
+            "type": "object"
+          },
+          "maxItems": 500,
+          "type": "array"
+        },
+        "total": {
+          "minimum": 0,
+          "type": "integer"
+        }
+      },
+      "required": [
+        "rooftops",
+        "total"
+      ],
+      "type": "object"
+    },
+    "error": {
+      "additionalProperties": false,
+      "description": "Unknown and foreign thread ids are deliberately indistinguishable: both return invalid_params with message \"unknown thread_id\" (anti-enumeration).",
+      "properties": {
+        "auth_help_url": {
+          "description": "Present only when no credential was supplied for a capability that requires one. Points to human documentation for obtaining a key. Absent for invalid, pending, or disabled credentials, which are deliberately indistinguishable.",
+          "format": "uri",
+          "maxLength": 500,
+          "type": "string"
+        },
+        "code": {
+          "enum": [
+            "rooftop_not_found",
+            "rooftop_inactive",
+            "unit_not_found",
+            "invalid_params",
+            "rate_limited",
+            "upstream_unavailable",
+            "capability_unavailable",
+            "identity_required",
+            "quota_exceeded",
+            "unit_held",
+            "quote_expired",
+            "rooftop_paused",
+            "handoff_duplicate",
+            "idempotency_conflict",
+            "price_unavailable",
+            "snapshot_expired",
+            "artifact_too_large",
+            "cursor_invalid",
+            "cursor_expired",
+            "ambiguous_identity",
+            "unsupported_in_country"
+          ]
+        },
+        "message": {
+          "maxLength": 500,
+          "type": "string"
+        },
+        "retry_after_seconds": {
+          "minimum": 0,
+          "type": "integer"
+        },
+        "retryable": {
+          "type": "boolean"
+        }
+      },
+      "required": [
+        "code",
+        "message",
+        "retryable"
+      ],
+      "type": "object"
+    },
+    "freshness": {
+      "additionalProperties": false,
+      "properties": {
+        "by_rooftop": {
+          "additionalProperties": {
+            "additionalProperties": false,
+            "properties": {
+              "last_ingest_at": {
+                "format": "date-time",
+                "maxLength": 40,
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "status": {
+                "enum": [
+                  "fresh",
+                  "stale",
+                  "no_data"
+                ]
+              }
+            },
+            "required": [
+              "status",
+              "last_ingest_at"
+            ],
+            "type": "object"
+          },
+          "maxProperties": 500,
+          "type": "object"
+        }
+      },
+      "required": [
+        "by_rooftop"
+      ],
+      "type": "object"
+    }
+  },
+  "type": "object"
+}

Changed1 schema field changedSep 18, 2026

addedInput schema / properties / country

Added value: +{
+  "default": "US",
+  "description": "Market to search; rooftops in the other country are excluded. Prices are in that country's currency; the radius stays in miles.",
+  "enum": [
+    "US",
+    "CA"
+  ],
+  "type": "string"
+}

First observedAug 10, 2026

TDQS

B3.2/5.0

Behavior3/5

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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=true, so the safety profile is fully covered elsewhere. The description's added value is the 'active' qualifier — only active rooftops appear — and the fact that a per-rooftop manifest URL is included. It says nothing about pagination behavior or freshness of the directory.

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?

Two tight sentences with zero filler; the core identity of the tool is front-loaded and the single actionable parameter note comes last. Nothing needs trimming.

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?

For a read-only directory tool with a full output schema and complete safety annotations, the description covers what the resource is and what it contains. The residual gap is paging behavior for limit/offset, which neither the schema nor the description explains.

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 only 33%: 'country' carries a rich schema description, but 'limit' and 'offset' have none. The description repeats the country hint ('Pass country=CA') which is already fully covered by the schema enum text, and says nothing about limit/offset defaults or paging semantics, so it fails to compensate for the coverage gap.

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?

States a specific resource and scope — 'Directory of active ADN rooftops' — and enumerates the fields returned (slug, name, dealer group, OEM programs, location, manifest URL). That is far more informative than the bare title 'List dealerships'. It does not, however, contrast itself with siblings like network_search or network_snapshot, so the agent must infer the distinction.

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?

The only guidance is 'Pass country=CA for Canadian dealers', which is a parameter hint rather than a when-to-use rule. There is no statement of when to reach for this tool versus network_search or network_snapshot, and no exclusion conditions. Usage is only implied by the word 'Directory'.

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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