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Medical Terminologies MCP

by SidneyBissoli
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TypeScript
Hybrid

Find Equivalents Across Terminologies

find_equivalent
Read-onlyIdempotent

Find equivalent medical terms across ICD-11, LOINC, RxNorm, and MeSH to map concepts between coding systems and support data integration.

Instructions

Ranked unified search for equivalent terms across multiple medical terminologies.

Use this tool to:

  • Find the same concept in different coding systems

  • Compare how terminologies represent a concept

  • Support terminology mapping and data integration

Searches across: ICD-11, LOINC, RxNorm, and MeSH. Set target_terminologies to limit which are searched, or set source_terminology to exclude one (e.g. when you already have a code from that terminology and want equivalents elsewhere). The two combine: source is subtracted from targets. limit caps candidates per terminology (default 5, max 10).

Every candidate carries match_score (lexical similarity to the search term, 0-1) and rank (global position across all searched terminologies) — both computed by this server, since upstreams don't expose comparable relevance scores. Candidates from different terminologies whose titles are lexically identical are clustered in groups — a strong same-concept signal (absence of a group is NOT evidence of non-equivalence).

Searches upstreams in English. For official pt-BR content, use the dedicated tools: icd11_search/mesh_search accept language: "pt", and cid10_search is natively Portuguese.

Input Schema

NameRequiredDescriptionDefault
termYesMedical term to search (e.g., "diabetes", "aspirin")
limitNoMaximum candidates returned PER terminology (1-10, default 5). This is a cap, not a page: the live fan-out has no stable cursor across five upstreams, so raise the limit instead of paging.
source_terminologyNoIf set, this terminology is excluded from the search. Use this when the term came from this terminology and you want equivalents in the others. Combines with target_terminologies by subtraction (source is removed from the target list).
target_terminologiesNoLimit the search to these terminologies. If omitted, all five are searched.

Output Schema

NameRequiredDescriptionDefault
termYesThe medical term as submitted.
groupsYesCandidates from different terminologies whose normalized titles are identical, grouped as likely the same concept; best match_score first. Empty when nothing groups (not evidence of non-equivalence).
rankingYesSelf-description of the ranking: match_score, rank and groups are computed by this server, not upstream relevance.
resultsYesPer-terminology results, keyed by terminology. A key is absent when that terminology was not searched; found=false with empty items and error null means searched, no hits.
provenanceYesOne provenance block per upstream source that contributed to this response (licenses are never merged; each block carries the origin diagnostics of ITS source)
attributionYesCanonical source URLs of this response (attribution list)
source_terminologyYesTerminology excluded from the search; null when none was given.
searched_terminologiesYesTerminologies actually searched: the targets minus source_terminology. Empty when nothing was left to search.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed24 schema fields changedv2.4.0
    • addedOutput schema / properties / groups / description
      Added value: +"Candidates from different terminologies whose normalized titles are identical, grouped as likely the same concept; best match_score first. Empty when nothing groups (not evidence of non-equivalence)."
    • addedOutput schema / properties / ranking / description
      Added value: +"Self-description of the ranking: match_score, rank and groups are computed by this server, not upstream relevance."
    • addedOutput schema / properties / ranking / properties / method / description
      Added value: +"Ranking method: lexical similarity computed by this server."
    • addedOutput schema / properties / ranking / properties / note / description
      Added value: +"How match_score and rank are computed."
    • addedOutput schema / properties / results / description
      Added value: +"Per-terminology results, keyed by terminology. A key is absent when that terminology was not searched; found=false with empty items and error null means searched, no hits."
    • addedOutput schema / properties / results / properties / icd11 / description
      Added value: +"ICD-11 (WHO) candidates; present only when ICD-11 was searched."
    • addedOutput schema / properties / results / properties / icd11 / properties / error / description
      Added value: +"Failure message when the search in this terminology failed (timeout, server error); null when it answered."
    • addedOutput schema / properties / results / properties / icd11 / properties / found / description
      Added value: +"True when this terminology returned at least one candidate."
    • addedOutput schema / properties / results / properties / icd11 / properties / items / description
      Added value: +"Candidates from this terminology, best first (by global rank), at most limit."
    • addedOutput schema / properties / results / properties / loinc / description
      Added value: +"LOINC candidates; present only when LOINC was searched."
    • addedOutput schema / properties / results / properties / loinc / properties / error / description
      Added value: +"Failure message when the search in this terminology failed (timeout, server error); null when it answered."
    • addedOutput schema / properties / results / properties / loinc / properties / found / description
      Added value: +"True when this terminology returned at least one candidate."
    • addedOutput schema / properties / results / properties / loinc / properties / items / description
      Added value: +"Candidates from this terminology, best first (by global rank), at most limit."
    • addedOutput schema / properties / results / properties / mesh / description
      Added value: +"MeSH candidates; present only when MeSH was searched."
    • addedOutput schema / properties / results / properties / mesh / properties / error / description
      Added value: +"Failure message when the search in this terminology failed (timeout, server error); null when it answered."
    • addedOutput schema / properties / results / properties / mesh / properties / found / description
      Added value: +"True when this terminology returned at least one candidate."
    • addedOutput schema / properties / results / properties / mesh / properties / items / description
      Added value: +"Candidates from this terminology, best first (by global rank), at most limit."
    • addedOutput schema / properties / results / properties / rxnorm / description
      Added value: +"RxNorm candidates; present only when RxNorm was searched."
    • addedOutput schema / properties / results / properties / rxnorm / properties / error / description
      Added value: +"Failure message when the search in this terminology failed (timeout, server error); null when it answered."
    • addedOutput schema / properties / results / properties / rxnorm / properties / found / description
      Added value: +"True when this terminology returned at least one candidate."
    • addedOutput schema / properties / results / properties / rxnorm / properties / items / description
      Added value: +"Candidates from this terminology, best first (by global rank), at most limit."
    • addedOutput schema / properties / searched_terminologies / description
      Added value: +"Terminologies actually searched: the targets minus source_terminology. Empty when nothing was left to search."
    • addedOutput schema / properties / source_terminology / description
      Added value: +"Terminology excluded from the search; null when none was given."
    • addedOutput schema / properties / term / description
      Added value: +"The medical term as submitted."
  2. Changed8 schema fields changedv2.3.0
    • changedOutput schema / properties / provenance / description
      Previous value: -"One provenance block per upstream source that contributed to this response (contract v1.1; licenses are never merged; each block carries the origin diagnostics of ITS source)"New value: +"One provenance block per upstream source that contributed to this response (licenses are never merged; each block carries the origin diagnostics of ITS source)"
    • changedOutput schema / properties / provenance / items / description
      Previous value: -"Bloco de proveniência (contrato v1.2): fonte, URL, competência, extração, diagnóstico de origem, citação e licença; e, só quando a resposta junta partes de origens ou momentos distintos, de onde veio cada parte"New value: +"Bloco de proveniência: fonte, URL, competência, extração, diagnóstico de origem, citação e licença; e, só quando há o que dizer, de onde veio cada parte, avisos da fonte, o que o servidor calculou e se o dado ainda pode mudar"
    • addedOutput schema / properties / provenance / items / properties / derivation_note
      Added value: +{
+  "description": "What this server computed; present together with derived",
+  "type": "string"
+}
    • addedOutput schema / properties / provenance / items / properties / derived
      Added value: +{
+  "description": "Present (true) only when this server computed the value (e.g. a ranking or summary statistics) instead of passing on what the source returned",
+  "type": "boolean"
+}
    • changedOutput schema / properties / provenance / items / properties / field_sources / description
      Previous value: -"Present only when the response joins parts from different origins or extraction instants (contract v1.2): for each group of fields, its URL, extraction instant and whether it came from cache. Absent in single-origin responses"New value: +"Present only when the response joins parts from different origins or extraction instants: for each group of fields, its URL, extraction instant and whether it came from cache. Absent in single-origin responses"
    • addedOutput schema / properties / provenance / items / properties / notices
      Added value: +{
+  "description": "Caveats the source publishes about the data, verbatim (license statements are not repeated here; see the info://licenses resource). Absent when there is none",
+  "items": {
+    "type": "string"
+  },
+  "minItems": 1,
+  "type": "array"
+}
    • changedOutput schema / properties / provenance / items / properties / retrieval / description
      Previous value: -"Origin diagnostics of THIS source in this call (contract v1.1): requests made to the upstream, attempts summed across retries, anomalies worked around (kind + count); unstable=true when any anomaly happened. null when nothing was measured (bundled dataset, or response served entirely from cache)"New value: +"Origin diagnostics of THIS source in this call: requests made to the upstream, attempts summed across retries, anomalies worked around (kind + count); unstable=true when any anomaly happened. null when nothing was measured (bundled dataset, or response served entirely from cache)"
    • addedOutput schema / properties / provenance / items / properties / revision
      Added value: +{
+  "additionalProperties": false,
+  "description": "Whether the data can still change at the source: current = the version in force, the source may revise it; provisional = preliminary; final = will not change. Absent when unknown",
+  "properties": {
+    "note": {
+      "description": "O específico da fonte: o que revisa, quando, por quê",
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "status": {
+      "description": "current = versão vigente, a fonte pode revisá-la; provisional = preliminar, incompleta ou sujeita a mudança (não compare como se fosse fechada); final = não muda mais, declarado pela fonte",
+      "enum": [
+        "current",
+        "provisional",
+        "final"
+      ],
+      "type": "string"
+    }
+  },
+  "required": [
+    "status",
+    "note"
+  ],
+  "type": "object"
+}
  3. Changed2 schema fields changedv2.1.1
    • changedOutput schema / properties / provenance / items / description
      Previous value: -"Bloco de proveniência (contrato v1.1): fonte, URL, competência, extração, diagnóstico de origem, citação e licença"New value: +"Bloco de proveniência (contrato v1.2): fonte, URL, competência, extração, diagnóstico de origem, citação e licença; e, só quando a resposta junta partes de origens ou momentos distintos, de onde veio cada parte"
    • addedOutput schema / properties / provenance / items / properties / field_sources
      Added value: +{
+  "description": "Present only when the response joins parts from different origins or extraction instants (contract v1.2): for each group of fields, its URL, extraction instant and whether it came from cache. Absent in single-origin responses",
+  "items": {
+    "additionalProperties": false,
+    "description": "Proveniência de um grupo de campos da resposta: de onde veio e quando foi extraído",
+    "properties": {
+      "data_vintage": {
+        "description": "Vintage/competência da sub-fonte",
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "dataset_id": {
+        "description": "Identificador do conjunto da sub-fonte",
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "fields": {
+        "description": "Campos do payload atribuídos a esta sub-fonte",
+        "items": {
+          "type": "string"
+        },
+        "minItems": 1,
+        "type": "array"
+      },
+      "retrieved_at": {
+        "description": "ISO-8601 da extração desta sub-fonte na origem",
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "served_from_cache": {
+        "description": "true se esta sub-fonte veio do cache do servidor (retrieved_at é o da extração original); false se foi buscada nesta chamada; null se o servidor não distingue",
+        "type": [
+          "boolean",
+          "null"
+        ]
+      },
+      "source_url": {
+        "description": "URL canônica da sub-fonte que originou estes campos",
+        "type": "string"
+      }
+    },
+    "required": [
+      "fields",
+      "source_url",
+      "dataset_id",
+      "data_vintage",
+      "retrieved_at"
+    ],
+    "type": "object"
+  },
+  "minItems": 1,
+  "type": "array"
+}
  4. Changed7 schema fields changedv2.0.0
    • changedInput schema / properties / source_terminology / enum
      Previous value: -[
-  "icd11",
-  "snomed",
-  "loinc",
-  "rxnorm",
-  "mesh"
-]New value: +[
+  "icd11",
+  "loinc",
+  "rxnorm",
+  "mesh"
+]
    • changedInput schema / properties / target_terminologies / items / enum
      Previous value: -[
-  "icd11",
-  "snomed",
-  "loinc",
-  "rxnorm",
-  "mesh"
-]New value: +[
+  "icd11",
+  "loinc",
+  "rxnorm",
+  "mesh"
+]
    • changedOutput schema / properties / groups / items / properties / members / items / properties / terminology / enum
      Previous value: -[
-  "icd11",
-  "snomed",
-  "loinc",
-  "rxnorm",
-  "mesh"
-]New value: +[
+  "icd11",
+  "loinc",
+  "rxnorm",
+  "mesh"
+]
    • changedOutput schema / properties / groups / items / properties / terminologies / items / enum
      Previous value: -[
-  "icd11",
-  "snomed",
-  "loinc",
-  "rxnorm",
-  "mesh"
-]New value: +[
+  "icd11",
+  "loinc",
+  "rxnorm",
+  "mesh"
+]
    • removedOutput schema / properties / results / properties / snomed
      Removed value: -{
-  "additionalProperties": false,
-  "properties": {
-    "error": {
-      "type": [
-        "string",
-        "null"
-      ]
-    },
-    "found": {
-      "type": "boolean"
-    },
-    "items": {
-      "items": {
-        "additionalProperties": false,
-        "properties": {
-          "code": {
-            "type": "string"
-          },
-          "match_score": {
-            "maximum": 1,
-            "minimum": 0,
-            "type": "number"
-          },
-          "rank": {
-            "maximum": 9007199254740991,
-            "minimum": 1,
-            "type": "integer"
-          },
-          "title": {
-            "type": "string"
-          },
-          "uri": {
-            "type": [
-              "string",
-              "null"
-            ]
-          }
-        },
-        "required": [
-          "code",
-          "title",
-          "uri",
-          "match_score",
-          "rank"
-        ],
-        "type": "object"
-      },
-      "type": "array"
-    }
-  },
-  "required": [
-    "found",
-    "error",
-    "items"
-  ],
-  "type": "object"
-}
    • changedOutput schema / properties / searched_terminologies / items / enum
      Previous value: -[
-  "icd11",
-  "snomed",
-  "loinc",
-  "rxnorm",
-  "mesh"
-]New value: +[
+  "icd11",
+  "loinc",
+  "rxnorm",
+  "mesh"
+]
    • changedOutput schema / properties / source_terminology / anyOf
      Previous value: -[
-  {
-    "enum": [
-      "icd11",
-      "snomed",
-      "loinc",
-      "rxnorm",
-      "mesh"
-    ],
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "enum": [
+      "icd11",
+      "loinc",
+      "rxnorm",
+      "mesh"
+    ],
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]
  5. Changed4 schema fields changedv1.15.0
    • changedOutput schema / properties / provenance / description
      Previous value: -"One provenance block per upstream source that contributed to this response (contract v1.0; licenses are never merged)"New value: +"One provenance block per upstream source that contributed to this response (contract v1.1; licenses are never merged; each block carries the origin diagnostics of ITS source)"
    • addedOutput schema / properties / provenance / items / description
      Added value: +"Bloco de proveniência (contrato v1.1): fonte, URL, competência, extração, diagnóstico de origem, citação e licença"
    • addedOutput schema / properties / provenance / items / properties / retrieval
      Added value: +{
+  "anyOf": [
+    {
+      "additionalProperties": false,
+      "properties": {
+        "anomalies": {
+          "description": "Anomalias superadas até o sucesso, somadas por classe, em ordem fixa; [] se nenhuma",
+          "items": {
+            "additionalProperties": false,
+            "properties": {
+              "count": {
+                "description": "Ocorrências desta classe na chamada",
+                "maximum": 9007199254740991,
+                "minimum": 1,
+                "type": "integer"
+              },
+              "kind": {
+                "description": "Classe da anomalia (vocabulário fechado do contrato)",
+                "enum": [
+                  "timeout",
+                  "network",
+                  "http_4xx",
+                  "http_5xx",
+                  "rate_limited",
+                  "malformed_body"
+                ],
+                "type": "string"
+              }
+            },
+            "required": [
+              "kind",
+              "count"
+            ],
+            "type": "object"
+          },
+          "type": "array"
+        },
+        "attempts": {
+          "description": "Tentativas somadas, incluindo as repetidas (>= requests)",
+          "maximum": 9007199254740991,
+          "minimum": 1,
+          "type": "integer"
+        },
+        "requests": {
+          "description": "Idas distintas à origem que compõem esta resposta (fatias, páginas)",
+          "maximum": 9007199254740991,
+          "minimum": 1,
+          "type": "integer"
+        },
+        "unstable": {
+          "description": "true se houve repetição (attempts > requests) ou alguma anomalia",
+          "type": "boolean"
+        }
+      },
+      "required": [
+        "requests",
+        "attempts",
+        "anomalies",
+        "unstable"
+      ],
+      "type": "object"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Origin diagnostics of THIS source in this call (contract v1.1): requests made to the upstream, attempts summed across retries, anomalies worked around (kind + count); unstable=true when any anomaly happened. null when nothing was measured (bundled dataset, or response served entirely from cache)"
+}
    • changedOutput schema / properties / provenance / items / required
      Previous value: -[
-  "source",
-  "source_url",
-  "data_vintage",
-  "retrieved_at",
-  "citation",
-  "license"
-]New value: +[
+  "source",
+  "source_url",
+  "data_vintage",
+  "retrieved_at",
+  "retrieval",
+  "citation",
+  "license"
+]
  6. Changed1 schema field changedv1.11.0
    • addedInput schema / additionalProperties
      Added value: +false
  7. Changed24 schema fields changedv1.9.1
    • removedOutput schema / properties / provenance / items / properties / data_vintage / anyOf
      Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
    • addedOutput schema / properties / provenance / items / properties / data_vintage / type
      Added value: +[
+  "string",
+  "null"
+]
    • removedOutput schema / properties / provenance / items / properties / license / anyOf
      Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
    • addedOutput schema / properties / provenance / items / properties / license / type
      Added value: +[
+  "string",
+  "null"
+]
    • removedOutput schema / properties / results / properties / icd11 / properties / error / anyOf
      Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
    • addedOutput schema / properties / results / properties / icd11 / properties / error / type
      Added value: +[
+  "string",
+  "null"
+]
    • removedOutput schema / properties / results / properties / icd11 / properties / items / items / properties / uri / anyOf
      Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
    • addedOutput schema / properties / results / properties / icd11 / properties / items / items / properties / uri / type
      Added value: +[
+  "string",
+  "null"
+]
    • removedOutput schema / properties / results / properties / loinc / properties / error / anyOf
      Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
    • addedOutput schema / properties / results / properties / loinc / properties / error / type
      Added value: +[
+  "string",
+  "null"
+]
    • removedOutput schema / properties / results / properties / loinc / properties / items / items / properties / uri / anyOf
      Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
    • addedOutput schema / properties / results / properties / loinc / properties / items / items / properties / uri / type
      Added value: +[
+  "string",
+  "null"
+]
    • removedOutput schema / properties / results / properties / mesh / properties / error / anyOf
      Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
    • addedOutput schema / properties / results / properties / mesh / properties / error / type
      Added value: +[
+  "string",
+  "null"
+]
    • removedOutput schema / properties / results / properties / mesh / properties / items / items / properties / uri / anyOf
      Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
    • addedOutput schema / properties / results / properties / mesh / properties / items / items / properties / uri / type
      Added value: +[
+  "string",
+  "null"
+]
    • removedOutput schema / properties / results / properties / rxnorm / properties / error / anyOf
      Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
    • addedOutput schema / properties / results / properties / rxnorm / properties / error / type
      Added value: +[
+  "string",
+  "null"
+]
    • removedOutput schema / properties / results / properties / rxnorm / properties / items / items / properties / uri / anyOf
      Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
    • addedOutput schema / properties / results / properties / rxnorm / properties / items / items / properties / uri / type
      Added value: +[
+  "string",
+  "null"
+]
    • removedOutput schema / properties / results / properties / snomed / properties / error / anyOf
      Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
    • addedOutput schema / properties / results / properties / snomed / properties / error / type
      Added value: +[
+  "string",
+  "null"
+]
    • removedOutput schema / properties / results / properties / snomed / properties / items / items / properties / uri / anyOf
      Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
    • addedOutput schema / properties / results / properties / snomed / properties / items / items / properties / uri / type
      Added value: +[
+  "string",
+  "null"
+]
  8. Changed26 schema fields changedv1.8.0
    • addedInput schema / properties / limit
      Added value: +{
+  "description": "Maximum candidates returned PER terminology (1-10, default 5). This is a cap, not a page: the live fan-out has no stable cursor across five upstreams, so raise the limit instead of paging.",
+  "maximum": 10,
+  "minimum": 1,
+  "type": "integer"
+}
    • addedOutput schema / properties / attribution
      Added value: +{
+  "description": "Canonical source URLs of this response (attribution list)",
+  "items": {
+    "type": "string"
+  },
+  "type": "array"
+}
    • addedOutput schema / properties / groups
      Added value: +{
+  "items": {
+    "additionalProperties": false,
+    "properties": {
+      "members": {
+        "items": {
+          "additionalProperties": false,
+          "properties": {
+            "code": {
+              "type": "string"
+            },
+            "match_score": {
+              "maximum": 1,
+              "minimum": 0,
+              "type": "number"
+            },
+            "terminology": {
+              "enum": [
+                "icd11",
+                "snomed",
+                "loinc",
+                "rxnorm",
+                "mesh"
+              ],
+              "type": "string"
+            },
+            "title": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "terminology",
+            "code",
+            "title",
+            "match_score"
+          ],
+          "type": "object"
+        },
+        "type": "array"
+      },
+      "normalized_title": {
+        "type": "string"
+      },
+      "terminologies": {
+        "items": {
+          "enum": [
+            "icd11",
+            "snomed",
+            "loinc",
+            "rxnorm",
+            "mesh"
+          ],
+          "type": "string"
+        },
+        "type": "array"
+      }
+    },
+    "required": [
+      "normalized_title",
+      "terminologies",
+      "members"
+    ],
+    "type": "object"
+  },
+  "type": "array"
+}
    • addedOutput schema / properties / provenance
      Added value: +{
+  "description": "One provenance block per upstream source that contributed to this response (contract v1.0; licenses are never merged)",
+  "items": {
+    "additionalProperties": false,
+    "properties": {
+      "citation": {
+        "description": "Ready-to-use citation/attribution string",
+        "type": "string"
+      },
+      "data_vintage": {
+        "anyOf": [
+          {
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "description": "Version/release of the data as exposed by the source; null when not exposed"
+      },
+      "license": {
+        "anyOf": [
+          {
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "description": "License / legal regime of the data"
+      },
+      "retrieved_at": {
+        "description": "Real instant of the upstream extraction (ISO-8601, UTC). Responses served from cache keep the ORIGINAL fetch instant.",
+        "type": "string"
+      },
+      "source": {
+        "description": "Official upstream source of this data",
+        "type": "string"
+      },
+      "source_url": {
+        "description": "Canonical URL of the source (API base or dataset release)",
+        "type": "string"
+      }
+    },
+    "required": [
+      "source",
+      "source_url",
+      "data_vintage",
+      "retrieved_at",
+      "citation",
+      "license"
+    ],
+    "type": "object"
+  },
+  "type": "array"
+}
    • addedOutput schema / properties / ranking
      Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "method": {
+      "const": "lexical",
+      "type": "string"
+    },
+    "note": {
+      "type": "string"
+    }
+  },
+  "required": [
+    "method",
+    "note"
+  ],
+  "type": "object"
+}
    • addedOutput schema / properties / results / properties / icd11 / properties / items / items / properties / match_score
      Added value: +{
+  "maximum": 1,
+  "minimum": 0,
+  "type": "number"
+}
    • addedOutput schema / properties / results / properties / icd11 / properties / items / items / properties / rank
      Added value: +{
+  "maximum": 9007199254740991,
+  "minimum": 1,
+  "type": "integer"
+}
    • addedOutput schema / properties / results / properties / icd11 / properties / items / items / properties / uri
      Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}
    • changedOutput schema / properties / results / properties / icd11 / properties / items / items / required
      Previous value: -[
-  "code",
-  "title"
-]New value: +[
+  "code",
+  "title",
+  "uri",
+  "match_score",
+  "rank"
+]
    • addedOutput schema / properties / results / properties / loinc / properties / items / items / properties / match_score
      Added value: +{
+  "maximum": 1,
+  "minimum": 0,
+  "type": "number"
+}
    • addedOutput schema / properties / results / properties / loinc / properties / items / items / properties / rank
      Added value: +{
+  "maximum": 9007199254740991,
+  "minimum": 1,
+  "type": "integer"
+}
    • addedOutput schema / properties / results / properties / loinc / properties / items / items / properties / uri
      Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}
    • changedOutput schema / properties / results / properties / loinc / properties / items / items / required
      Previous value: -[
-  "code",
-  "title"
-]New value: +[
+  "code",
+  "title",
+  "uri",
+  "match_score",
+  "rank"
+]
    • addedOutput schema / properties / results / properties / mesh / properties / items / items / properties / match_score
      Added value: +{
+  "maximum": 1,
+  "minimum": 0,
+  "type": "number"
+}
    • addedOutput schema / properties / results / properties / mesh / properties / items / items / properties / rank
      Added value: +{
+  "maximum": 9007199254740991,
+  "minimum": 1,
+  "type": "integer"
+}
    • addedOutput schema / properties / results / properties / mesh / properties / items / items / properties / uri
      Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}
    • changedOutput schema / properties / results / properties / mesh / properties / items / items / required
      Previous value: -[
-  "code",
-  "title"
-]New value: +[
+  "code",
+  "title",
+  "uri",
+  "match_score",
+  "rank"
+]
    • addedOutput schema / properties / results / properties / rxnorm / properties / items / items / properties / match_score
      Added value: +{
+  "maximum": 1,
+  "minimum": 0,
+  "type": "number"
+}
    • addedOutput schema / properties / results / properties / rxnorm / properties / items / items / properties / rank
      Added value: +{
+  "maximum": 9007199254740991,
+  "minimum": 1,
+  "type": "integer"
+}
    • addedOutput schema / properties / results / properties / rxnorm / properties / items / items / properties / uri
      Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}
    • changedOutput schema / properties / results / properties / rxnorm / properties / items / items / required
      Previous value: -[
-  "code",
-  "title"
-]New value: +[
+  "code",
+  "title",
+  "uri",
+  "match_score",
+  "rank"
+]
    • addedOutput schema / properties / results / properties / snomed / properties / items / items / properties / match_score
      Added value: +{
+  "maximum": 1,
+  "minimum": 0,
+  "type": "number"
+}
    • addedOutput schema / properties / results / properties / snomed / properties / items / items / properties / rank
      Added value: +{
+  "maximum": 9007199254740991,
+  "minimum": 1,
+  "type": "integer"
+}
    • addedOutput schema / properties / results / properties / snomed / properties / items / items / properties / uri
      Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}
    • changedOutput schema / properties / results / properties / snomed / properties / items / items / required
      Previous value: -[
-  "code",
-  "title"
-]New value: +[
+  "code",
+  "title",
+  "uri",
+  "match_score",
+  "rank"
+]
    • changedOutput schema / required
      Previous value: -[
-  "term",
-  "source_terminology",
-  "searched_terminologies",
-  "results"
-]New value: +[
+  "term",
+  "source_terminology",
+  "searched_terminologies",
+  "results",
+  "groups",
+  "ranking",
+  "provenance",
+  "attribution"
+]
  9. Changed11 schema fields changedv1.5.7
    • removedInput schema / additionalProperties
      Removed value: -false
    • addedOutput schema / properties / results / properties / icd11 / properties / error / anyOf
      Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]
    • removedOutput schema / properties / results / properties / icd11 / properties / error / type
      Removed value: -[
-  "string",
-  "null"
-]
    • addedOutput schema / properties / results / properties / loinc / properties / error / anyOf
      Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]
    • removedOutput schema / properties / results / properties / loinc / properties / error / type
      Removed value: -[
-  "string",
-  "null"
-]
    • addedOutput schema / properties / results / properties / mesh / properties / error / anyOf
      Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]
    • removedOutput schema / properties / results / properties / mesh / properties / error / type
      Removed value: -[
-  "string",
-  "null"
-]
    • addedOutput schema / properties / results / properties / rxnorm / properties / error / anyOf
      Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]
    • removedOutput schema / properties / results / properties / rxnorm / properties / error / type
      Removed value: -[
-  "string",
-  "null"
-]
    • addedOutput schema / properties / results / properties / snomed / properties / error / anyOf
      Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]
    • removedOutput schema / properties / results / properties / snomed / properties / error / type
      Removed value: -[
-  "string",
-  "null"
-]
  10. First observedv1.2.1

TDQS

A4.9/5.0
Behavior5/5

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

Goes well beyond the readOnly/idempotent/openWorld annotations by disclosing derived fields the server computes itself ('match_score', 'rank') because upstreams lack comparable relevance scores, and by explaining the 'groups' clustering signal plus the caveat that absence of a group is not evidence of non-equivalence. It also discloses the English-only upstream behavior, which materially affects result interpretation.

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?

Purpose first, then three short usage bullets, then the mechanics (systems, source/target interaction, limit, scoring, grouping), then the language caveat — a deliberately ordered funnel. Every sentence adds either routing information or result-interpretation guidance; nothing is filler.

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

Completeness5/5

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

For a four-param, five-upstream fan-out tool with an output schema present, the description covers exactly what the schema cannot: cross-terminology semantics, score provenance, grouping interpretation, and language limitations. No gap remains that would cause an agent to mis-call or mis-read the output.

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

Parameters4/5

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

Schema coverage is 100% and the parameters are already well documented in-schema, but the description adds the non-obvious interaction rule that source is subtracted from targets, and reinforces that limit is a per-terminology cap rather than a page. Much of the remaining parameter text restates what the schema already says, so it sits just above the baseline rather than transforming understanding.

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

Purpose5/5

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

States a specific verb and resource — 'ranked unified search for equivalent terms across multiple medical terminologies' — and immediately enumerates the covered systems (ICD-11, LOINC, RxNorm, MeSH). An agent can distinguish this cross-terminology mapper from single-vocabulary siblings like icd11_search or rxnorm_search without opening a schema.

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

Usage Guidelines5/5

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

Provides explicit 'use this tool to' cases (find the same concept in other systems, compare representations, support mapping/integration) and explains the source_terminology exclusion pattern with a concrete scenario. It also routes away to alternatives by name when official pt-BR content is needed (icd11_search, mesh_search, cid10_search).

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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