Added value: +"Optional maximum result count; integer 1–10 inclusive, default 5. Fewer or zero results may be returned; this MCP limit differs from other transports."

Added value: +"Required free-text query, 1–200 raw characters, no ASCII control characters. Use at least two searchable characters after accent/case/punctuation normalization. Dutch terms and model names search the existing index using lexical tokens and intent rules; no semantic generation."

Added value: +"Human-readable KentekenKompas citation URL for this record/context; distinct from an original sourceUrl and a kk:// resource identity."

Added value: +"Available coverage metadata; incomplete or absent coverage is not an assurance of complete knowledge. Preserve limitations."

Added value: +"Tool-specific successful result. Search returns an array (possibly empty); exact tools return the requested record or projection. Tool errors use a separate isError envelope."

Added value: +"Existing short preview or fixed contract explanation; not a generated answer or a replacement for full context."

Added value: +"Human-readable KentekenKompas citation URL for this record/context; distinct from an original sourceUrl and a kk:// resource identity."

Added value: +"Knowledge classification: OFFICIAL, reproducibly DERIVED, or EDITORIAL. Preserve this label; it is not a confidence score."

Added value: +"Search-level freshness metadata/status. NOT_EXPOSED_IN_SEARCH_INDEX means dates are not exposed there; fetch exact context when available."

Added value: +"Stable result identifier. Route by type: model to get_model_context, answer to get_answer_context, term to explain_dutch_vehicle_term, source to get_source_context. Topic IDs are not automatically answer IDs."

Added value: +"Deterministic matching/boost reason codes explaining ranking, not evidence for factual claims."

Added value: +"Deterministic query-intent label used by search rules, not inferred user certainty."

Added value: +"Normalized lexical query tokens found in the index record; may be empty for fixed intent-based supplemental results."

Added value: +"Canonical model identifier from search results or kk://models, e.g. volkswagen-golf. 1–200 characters; lowercase ASCII letters/digits separated by single hyphens. Exact match; no aliases, spaces, uppercase, URL or license plate."

Added value: +"Deterministic lexical/intent ranking score, not AI confidence, truth probability or source quality. Used to sort this query's results; not a probability or fixed 0–1 scale."

Added value: +"Score band: EXACT >=140, STRONG >=55 and <140, RELATED <55. EXACT is a score label and does not guarantee a literal exact match."

Added value: +"Human-readable title of the matched existing knowledge record."

Added value: +"Result kind (currently model, answer, term, topic or supplemental source); determines how its identifier can be used."

Added value: +"Exposed evidence references with classifications and source IDs. May be empty (including search); not proof that knowledge has no provenance."

Added value: +"Knowledge classification: OFFICIAL, reproducibly DERIVED, or EDITORIAL. Preserve this label; it is not a confidence score."

Added value: +"Identifier of a cited evidence reference; resolve its sourceIds for provenance, not as a confidence score."

Added value: +"Opaque IDs of supporting public sources or source groups. An empty array means no references exposed here, not proof of completeness."

Added value: +"Opaque public SOURCE or SOURCE_GROUP ID, 1–200 characters; lowercase ASCII letters/digits with dot, colon or hyphen separators as specified by the pattern. Copy exactly from sources or search; never split or reconstruct composite-looking IDs."

Added value: +"Available freshness metadata. Distinguish dataAsOf, sourceCheckedAt, editorialReviewedAt and generatedAt; missing fields do not mean current."

Added value: +"Optional date/time to which the underlying data relates; absent means not supplied, not current."

Added value: +"Optional date/time of editorial review; does not certify that all underlying data was refreshed."

Added value: +"Timestamp of generation. At envelope level this is the active manifest's generatedAt, not a source refresh or publication date."

Added value: +"Optional date/time when the source was checked, not necessarily the date the data describes."

Added value: +"Active knowledge release identifier from its manifest; not the API contract or MCP/registry server version."

Added value: +"Explicit scope and interpretation limits to preserve in client answers. Empty does not certify complete coverage."

Added value: +"Transport envelope contract kk-api-v1; distinct from the nested knowledge schema, knowledgeVersion and server version."

Added value: +"Resolved public SOURCE/SOURCE_GROUP records supporting this result. Search may leave this empty; use get_source_context for a discovered source ID."

Previous value: -[
-  {
-    "additionalProperties": false,
-    "properties": {
-      "category": {
-        "enum": [
-          "OFFICIAL_PRIMARY_DATA",
-          "OFFICIAL_GUIDANCE",
-          "PRIMARY_NON_GOVERNMENT",
-          "REPUTABLE_EDITORIAL",
-          "BACKGROUND_REFERENCE",
-          "KENTEKENKOMPAS_DERIVED",
-          "KENTEKENKOMPAS_EDITORIAL"
-        ],
-        "type": "string"
-      },
-      "citationUrl": {
-        "format": "uri",
-        "type": "string"
-      },
-      "freshness": {
-        "additionalProperties": {},
-        "propertyNames": {
-          "type": "string"
-        },
-        "type": "object"
-      },
-      "kind": {
-        "const": "SOURCE",
-        "type": "string"
-      },
-      "label": {
-        "type": "string"
-      },
-      "limitations": {
-        "items": {
-          "type": "string"
-        },
-        "type": "array"
-      },
-      "sourceId": {
-        "maxLength": 200,
-        "minLength": 1,
-        "pattern": "^[a-z0-9]+(?:[.:-][a-z0-9-]+)*$",
-        "type": "string"
-      },
-      "sourceUrl": {
-        "format": "uri",
-        "type": "string"
-      },
-      "visibility": {
-        "const": "PUBLIC",
-        "type": "string"
-      }
-    },
-    "required": [
-      "sourceId",
-      "kind",
-      "visibility",
-      "label",
-      "category",
-      "citationUrl",
-      "sourceUrl",
-      "freshness",
-      "limitations"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "category": {
-        "enum": [
-          "OFFICIAL_PRIMARY_DATA",
-          "OFFICIAL_GUIDANCE",
-          "PRIMARY_NON_GOVERNMENT",
-          "REPUTABLE_EDITORIAL",
-          "BACKGROUND_REFERENCE",
-          "KENTEKENKOMPAS_DERIVED",
-          "KENTEKENKOMPAS_EDITORIAL"
-        ],
-        "type": "string"
-      },
-      "citationUrl": {
-        "format": "uri",
-        "type": "string"
-      },
-      "citationUrls": {
-        "items": {
-          "format": "uri",
-          "type": "string"
-        },
-        "type": "array"
-      },
-      "description": {
-        "type": "string"
-      },
-      "freshness": {
-        "additionalProperties": {},
-        "propertyNames": {
-          "type": "string"
-        },
-        "type": "object"
-      },
-      "kind": {
-        "const": "SOURCE_GROUP",
-        "type": "string"
-      },
-      "label": {
-        "type": "string"
-      },
-      "limitations": {
-        "items": {
-          "type": "string"
-        },
-        "type": "array"
-      },
-      "memberOrderMeaning": {
-        "type": "string"
-      },
-      "memberSourceIds": {
-        "items": {
-          "maxLength": 200,
-          "minLength": 1,
-          "pattern": "^[a-z0-9]+(?:[.:-][a-z0-9-]+)*$",
-          "type": "string"
-        },
-        "minItems": 1,
-        "type": "array"
-      },
-      "sourceId": {
-        "maxLength": 200,
-        "minLength": 1,
-        "pattern": "^[a-z0-9]+(?:[.:-][a-z0-9-]+)*$",
-        "type": "string"
-      },
-      "visibility": {
-        "const": "PUBLIC",
-        "type": "string"
-      }
-    },
-    "required": [
-      "sourceId",
-      "kind",
-      "visibility",
-      "label",
-      "category",
-      "citationUrl",
-      "description",
-      "memberSourceIds",
-      "memberOrderMeaning",
-      "citationUrls",
-      "freshness",
-      "limitations"
-    ],
-    "type": "object"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "category": {
+        "description": "Detailed provenance category. Keep it distinct from the coarser OFFICIAL/DERIVED/EDITORIAL classification.",
+        "enum": [
+          "OFFICIAL_PRIMARY_DATA",
+          "OFFICIAL_GUIDANCE",
+          "PRIMARY_NON_GOVERNMENT",
+          "REPUTABLE_EDITORIAL",
+          "BACKGROUND_REFERENCE",
+          "KENTEKENKOMPAS_DERIVED",
+          "KENTEKENKOMPAS_EDITORIAL"
+        ],
+        "type": "string"
+      },
+      "citationUrl": {
+        "description": "Human-readable KentekenKompas citation URL for this record/context; distinct from an original sourceUrl and a kk:// resource identity.",
+        "format": "uri",
+        "type": "string"
+      },
+      "freshness": {
+        "additionalProperties": {},
+        "description": "Available freshness metadata. Distinguish dataAsOf, sourceCheckedAt, editorialReviewedAt and generatedAt; missing fields do not mean current.",
+        "propertyNames": {
+          "type": "string"
+        },
+        "type": "object"
+      },
+      "kind": {
+        "const": "SOURCE",
+        "description": "Discriminator: SOURCE is one public source; SOURCE_GROUP is an explicit grouped provenance record.",
+        "type": "string"
+      },
+      "label": {
+        "description": "Human-readable label supplied by the knowledge record.",
+        "type": "string"
+      },
+      "limitations": {
+        "description": "Explicit scope and interpretation limits to preserve in client answers. Empty does not certify complete coverage.",
+        "items": {
+          "type": "string"
+        },
+        "type": "array"
+      },
+      "sourceId": {
+        "description": "Opaque public SOURCE or SOURCE_GROUP ID, 1–200 characters; lowercase ASCII letters/digits with dot, colon or hyphen separators as specified by the pattern. Copy exactly from sources or search; never split or reconstruct composite-looking IDs.",
+        "maxLength": 200,
+        "minLength": 1,
+        "pattern": "^[a-z0-9]+(?:[.:-][a-z0-9-]+)*$",
+        "type": "string"
+      },
+      "sourceUrl": {
+        "description": "Original public source URL for a SOURCE record; distinct from the KentekenKompas explanation URL.",
+        "format": "uri",
+        "type": "string"
+      },
+      "visibility": {
+        "const": "PUBLIC",
+        "description": "PUBLIC marks provenance permitted in the public knowledge contract.",
+        "type": "string"
+      }
+    },
+    "required": [
+      "sourceId",
+      "kind",
+      "visibility",
+      "label",
+      "category",
+      "citationUrl",
+      "sourceUrl",
+      "freshness",
+      "limitations"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "category": {
+        "description": "Detailed provenance category. Keep it distinct from the coarser OFFICIAL/DERIVED/EDITORIAL classification.",
+        "enum": [
+          "OFFICIAL_PRIMARY_DATA",
+          "OFFICIAL_GUIDANCE",
+          "PRIMARY_NON_GOVERNMENT",
+          "REPUTABLE_EDITORIAL",
+          "BACKGROUND_REFERENCE",
+          "KENTEKENKOMPAS_DERIVED",
+          "KENTEKENKOMPAS_EDITORIAL"
+        ],
+        "type": "string"
+      },
+      "citationUrl": {
+        "description": "Human-readable KentekenKompas citation URL for this record/context; distinct from an original sourceUrl and a kk:// resource identity.",
+        "format": "uri",
+        "type": "string"
+      },
+      "citationUrls": {
+        "description": "Human-readable citation links associated with the group; not its members' sourceUrl fields.",
+        "items": {
+          "format": "uri",
+          "type": "string"
+        },
+        "type": "array"
+      },
+      "description": {
+        "description": "Public explanation of the source group's purpose and composition.",
+        "type": "string"
+      },
+      "freshness": {
+        "additionalProperties": {},
+        "description": "Available freshness metadata. Distinguish dataAsOf, sourceCheckedAt, editorialReviewedAt and generatedAt; missing fields do not mean current.",
+        "propertyNames": {
+          "type": "string"
+        },
+        "type": "object"
+      },
+      "kind": {
+        "const": "SOURCE_GROUP",
+        "description": "Discriminator: SOURCE is one public source; SOURCE_GROUP is an explicit grouped provenance record.",
+        "type": "string"
+      },
+      "label": {
+        "description": "Human-readable label supplied by the knowledge record.",
+        "type": "string"
+      },
+      "limitations": {
+        "description": "Explicit scope and interpretation limits to preserve in client answers. Empty does not certify complete coverage.",
+        "items": {
+          "type": "string"
+        },
+        "type": "array"
+      },
+      "memberOrderMeaning": {
+        "description": "Explanation of whether/how member ordering matters; do not infer ranking or chronology.",
+        "type": "string"
+      },
+      "memberSourceIds": {
+        "description": "Explicit, non-empty list of source IDs belonging to this group; use these rather than splitting the group's opaque sourceId.",
+        "items": {
+          "description": "Opaque public SOURCE or SOURCE_GROUP ID, 1–200 characters; lowercase ASCII letters/digits with dot, colon or hyphen separators as specified by the pattern. Copy exactly from sources or search; never split or reconstruct composite-looking IDs.",
+          "maxLength": 200,
+          "minLength": 1,
+          "pattern": "^[a-z0-9]+(?:[.:-][a-z0-9-]+)*$",
+          "type": "string"
+        },
+        "minItems": 1,
+        "type": "array"
+      },
+      "sourceId": {
+        "description": "Opaque public SOURCE or SOURCE_GROUP ID, 1–200 characters; lowercase ASCII letters/digits with dot, colon or hyphen separators as specified by the pattern. Copy exactly from sources or search; never split or reconstruct composite-looking IDs.",
+        "maxLength": 200,
+        "minLength": 1,
+        "pattern": "^[a-z0-9]+(?:[.:-][a-z0-9-]+)*$",
+        "type": "string"
+      },
+      "visibility": {
+        "const": "PUBLIC",
+        "description": "PUBLIC marks provenance permitted in the public knowledge contract.",
+        "type": "string"
+      }
+    },
+    "required": [
+      "sourceId",
+      "kind",
+      "visibility",
+      "label",
+      "category",
+      "citationUrl",
+      "description",
+      "memberSourceIds",
+      "memberOrderMeaning",
+      "citationUrls",
+      "freshness",
+      "limitations"
+    ],
+    "type": "object"
+  }
+]