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LOINC Panel Structure

loinc_panels
Read-onlyIdempotent

Retrieve the list of LOINC codes that make up a panel or form to see all included tests and grouped observations.

Instructions

Get the structure of a LOINC panel or form.

Use this tool to:

  • See all tests included in a panel (e.g., CBC, metabolic panel)

  • Get the structure of assessment forms

  • Find related observations grouped together

Returns the list of LOINC codes that make up the panel.

Input Schema

NameRequiredDescriptionDefault
loinc_numYesLOINC number (e.g., "2339-0")

Output Schema

NameRequiredDescriptionDefault
panelYesPanel/form definition with its member items; null when no panel structure is found for the code (not a panel, or no definition available).
loinc_numYesThe LOINC number as submitted.
provenanceYesProvenance block: source, URL, data vintage, extraction instant, origin diagnostics, citation, license
attributionYesCanonical source URLs of this response (attribution list)

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changedv2.4.0
    • addedOutput schema / properties / loinc_num / description
      Added value: +"The LOINC number as submitted."
    • addedOutput schema / properties / panel / description
      Added value: +"Panel/form definition with its member items; null when no panel structure is found for the code (not a panel, or no definition available)."
  2. Changed7 schema fields changedv2.3.0
    • changedOutput schema / properties / provenance / description
      Previous value: -"Provenance block (contract v1.1): source, URL, data vintage, extraction instant, origin diagnostics, citation, license"New value: +"Provenance block: source, URL, data vintage, extraction instant, origin diagnostics, citation, license"
    • addedOutput schema / properties / provenance / properties / derivation_note
      Added value: +{
      +  "description": "What this server computed; present together with derived",
      +  "type": "string"
      +}
    • addedOutput schema / properties / provenance / 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 / 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 / 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 / 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 / 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. Changed1 schema field changedv2.1.1
    • addedOutput schema / properties / provenance / 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. Changed1 schema field changedv2.0.0
    • changedOutput schema / properties / panel / anyOf
      Previous value: -[
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "items": {
      -        "items": {
      -          "additionalProperties": false,
      -          "properties": {
      -            "loinc_num": {
      -              "type": "string"
      -            },
      -            "name": {
      -              "type": "string"
      -            },
      -            "required": {
      -              "type": "boolean"
      -            },
      -            "sequence": {
      -              "maximum": 9007199254740991,
      -              "minimum": -9007199254740991,
      -              "type": "integer"
      -            }
      -          },
      -          "required": [
      -            "sequence",
      -            "loinc_num",
      -            "name",
      -            "required"
      -          ],
      -          "type": "object"
      -        },
      -        "type": "array"
      -      },
      -      "loinc_num": {
      -        "type": "string"
      -      },
      -      "name": {
      -        "type": "string"
      -      }
      -    },
      -    "required": [
      -      "loinc_num",
      -      "name",
      -      "items"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]New value: +[
      +  {
      +    "additionalProperties": false,
      +    "properties": {
      +      "items": {
      +        "items": {
      +          "additionalProperties": false,
      +          "properties": {
      +            "loinc_num": {
      +              "type": "string"
      +            },
      +            "name": {
      +              "type": "string"
      +            },
      +            "required": {
      +              "description": "Whether the item is required; null when the source form definition does not state it (the case for every panel the API serves today).",
      +              "type": [
      +                "boolean",
      +                "null"
      +              ]
      +            },
      +            "sequence": {
      +              "description": "Position in the form (1-based), i.e. display order.",
      +              "maximum": 9007199254740991,
      +              "minimum": -9007199254740991,
      +              "type": "integer"
      +            }
      +          },
      +          "required": [
      +            "sequence",
      +            "loinc_num",
      +            "name",
      +            "required"
      +          ],
      +          "type": "object"
      +        },
      +        "type": "array"
      +      },
      +      "loinc_num": {
      +        "type": "string"
      +      },
      +      "name": {
      +        "type": "string"
      +      }
      +    },
      +    "required": [
      +      "loinc_num",
      +      "name",
      +      "items"
      +    ],
      +    "type": "object"
      +  },
      +  {
      +    "type": "null"
      +  }
      +]
  5. Changed3 schema fields changedv1.15.0
    • changedOutput schema / properties / provenance / description
      Previous value: -"Provenance block (contract v1.0): source, URL, data vintage, extraction instant, citation, license"New value: +"Provenance block (contract v1.1): source, URL, data vintage, extraction instant, origin diagnostics, citation, license"
    • addedOutput schema / properties / provenance / 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 / 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. Changed4 schema fields changedv1.9.1
    • removedOutput schema / properties / provenance / properties / data_vintage / anyOf
      Removed value: -[
      -  {
      -    "type": "string"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]
    • addedOutput schema / properties / provenance / properties / data_vintage / type
      Added value: +[
      +  "string",
      +  "null"
      +]
    • removedOutput schema / properties / provenance / properties / license / anyOf
      Removed value: -[
      -  {
      -    "type": "string"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]
    • addedOutput schema / properties / provenance / properties / license / type
      Added value: +[
      +  "string",
      +  "null"
      +]
  8. Changed3 schema fields changedv1.8.0
    • addedOutput schema / properties / attribution
      Added value: +{
      +  "description": "Canonical source URLs of this response (attribution list)",
      +  "items": {
      +    "type": "string"
      +  },
      +  "type": "array"
      +}
    • addedOutput schema / properties / provenance
      Added value: +{
      +  "additionalProperties": false,
      +  "description": "Provenance block (contract v1.0): source, URL, data vintage, extraction instant, citation, license",
      +  "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"
      +}
    • changedOutput schema / required
      Previous value: -[
      -  "loinc_num",
      -  "panel"
      -]New value: +[
      +  "loinc_num",
      +  "panel",
      +  "provenance",
      +  "attribution"
      +]
  9. Changed2 schema fields changedv1.5.7
    • removedInput schema / additionalProperties
      Removed value: -false
    • changedOutput schema / properties / panel / anyOf
      Previous value: -[
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "items": {
      -        "items": {
      -          "additionalProperties": false,
      -          "properties": {
      -            "loinc_num": {
      -              "type": "string"
      -            },
      -            "name": {
      -              "type": "string"
      -            },
      -            "required": {
      -              "type": "boolean"
      -            },
      -            "sequence": {
      -              "type": "integer"
      -            }
      -          },
      -          "required": [
      -            "sequence",
      -            "loinc_num",
      -            "name",
      -            "required"
      -          ],
      -          "type": "object"
      -        },
      -        "type": "array"
      -      },
      -      "loinc_num": {
      -        "type": "string"
      -      },
      -      "name": {
      -        "type": "string"
      -      }
      -    },
      -    "required": [
      -      "loinc_num",
      -      "name",
      -      "items"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]New value: +[
      +  {
      +    "additionalProperties": false,
      +    "properties": {
      +      "items": {
      +        "items": {
      +          "additionalProperties": false,
      +          "properties": {
      +            "loinc_num": {
      +              "type": "string"
      +            },
      +            "name": {
      +              "type": "string"
      +            },
      +            "required": {
      +              "type": "boolean"
      +            },
      +            "sequence": {
      +              "maximum": 9007199254740991,
      +              "minimum": -9007199254740991,
      +              "type": "integer"
      +            }
      +          },
      +          "required": [
      +            "sequence",
      +            "loinc_num",
      +            "name",
      +            "required"
      +          ],
      +          "type": "object"
      +        },
      +        "type": "array"
      +      },
      +      "loinc_num": {
      +        "type": "string"
      +      },
      +      "name": {
      +        "type": "string"
      +      }
      +    },
      +    "required": [
      +      "loinc_num",
      +      "name",
      +      "items"
      +    ],
      +    "type": "object"
      +  },
      +  {
      +    "type": "null"
      +  }
      +]
  10. First observedv1.2.1

TDQS

A3.8/5.0
Behavior3/5

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

Annotations already declare readOnly, idempotent, non-destructive and openWorld, so the safety profile is fully covered without prose. The description adds only that the result is a list of LOINC codes making up the panel — which the output schema already conveys — and says nothing about panel-vs-form differences, missing/empty panels, or hierarchy depth. Adequate but thin beyond structured data.

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?

The purpose sentence is front-loaded, the bullets are short and scannable, and there is no filler. The final 'Returns the list of LOINC codes...' sentence partially duplicates the output schema, which is the only waste.

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?

With one required parameter, full schema coverage, four annotations, and an output schema, the description covers everything needed to invoke correctly: what it does, when to reach for it, and what shape the answer takes. Nothing essential is missing for a tool of this complexity.

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 coverage is 100% with a documented pattern and example ('2339-0'), so the schema fully carries the parameter burden. The description adds only the implication that loinc_num must identify a panel or form rather than an arbitrary LOINC code, which is a small semantic gain. 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?

States a specific verb+resource ('Get the structure of a LOINC panel or form') and the bullet list clarifies the resource types (panels, assessment forms, grouped observations). It does not explicitly name how it differs from close siblings like loinc_details or loinc_answers, so an agent must infer the boundary.

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?

The 'Use this tool to:' list gives three concrete triggering scenarios (CBC/metabolic panel contents, assessment form structure, related grouped observations), which is clear context for selection. However, it names no exclusions or alternatives — e.g. it never says to use loinc_answers for answer lists or loinc_details for a single test — leaving the agent to disambiguate against 30+ siblings on its own.

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