Cortexa research tool·genomics·gtex_v2

GTEx Get Median Gene Expression

Get median gene expression levels across GTEx tissues. Returns median expression in TPM (Transcripts Per Million) for one or more genes across 54 tissue sites. Filter by specific tissues or get expression across all tissues. Based on Adult GTEx V11 (January 2026). Use for: tissue-specific expression profiling, identifying highly expressed genes, comparing expression patterns across tissues. Example: Get brain vs liver expression for TP53 gene.

Livelast probed 2026-04-30 23:07Z· 121msCortexa

Status

The most recent probe succeeded. Safe to call from the agent today.

Last probed: 1d ago
Last success: 1d ago
Last latency: 121ms

Schema

JSON Schema the agent (or your API call) must match.

{
  "properties": {
    "dataset_id": {
      "default": "gtex_v8",
      "description": "GTEx dataset version (default: gtex_v8; v10 returns empty for most endpoints)",
      "enum": [
        "gtex_v8",
        "gtex_v10",
        "gtex_snrnaseq_pilot"
      ],
      "type": "string"
    },
    "gencode_id": {
      "description": "Gene identifier(s): gene symbol (e.g. 'TP53'), unversioned Ensembl ID (e.g. 'ENSG00000141510'), or versioned GENCODE ID (e.g. 'ENSG00000141510.18'). Auto-resolved to versioned GENCODE ID. Can be single string or array.",
      "items": {
        "type": "string"
      },
      "type": [
        "string",
        "array"
      ]
    },
    "gene_symbol": {
      "description": "Gene symbol alias for gencode_id (e.g., \"TP53\", \"COL5A1\")",
      "type": "string"
    },
    "items_per_page": {
      "default": 250,
      "description": "Results per page",
      "maximum": 100000,
      "minimum": 1,
      "type": "integer"
    },
    "operation": {
      "description": "Operation type",
      "enum": [
        "get_median_gene_expression"
      ],
      "type": "string"
    },
    "page": {
      "default": 0,
      "description": "Page number for pagination (0-based)",
      "minimum": 0,
      "type": "integer"
    },
    "tissue_site_detail_id": {
      "description": "Optional: Tissue IDs to filter (e.g. ['Liver', 'Brain_Cortex']). Omit for all tissues. See GTEx_get_tissue_sites for valid IDs",
      "items": {
        "type": "string"
      },
      "type": "array"
    }
  },
  "required": [],
  "type": "object"
}

Examples (1)

Default GTEx Get Median Gene Expression call

public-safeinput

{
  "gene_symbol": "BRCA1",
  "items_per_page": 1,
  "page": 1,
  "tissue_site_detail_id": []
}

Expected response keys: success

Anonymous-safe example. Rate-limited; no sign-in required.

Identifiers

Catalog ID: tu_GTEx_get_median_gene_expression
Tool name: GTEx_get_median_gene_expression
Added: 2026-04-30 22:47Z
Tags: tooluniverse

GTEx Get Median Gene Expression

Livelast probed 2026-04-30 23:07Z· 121msCortexa

Schema

JSON Schema the agent (or your API call) must match.

{ "properties": { "dataset_id": { "default": "gtex_v8", "description": "GTEx dataset version (default: gtex_v8; v10 returns empty for most endpoints)", "enum": [ "gtex_v8", "gtex_v10", "gtex_snrnaseq_pilot" ], "type": "string" }, "gencode_id": { "description": "Gene identifier(s): gene symbol (e.g. 'TP53'), unversioned Ensembl ID (e.g. 'ENSG00000141510'), or versioned GENCODE ID (e.g. 'ENSG00000141510.18'). Auto-resolved to versioned GENCODE ID. Can be single string or array.", "items": { "type": "string" }, "type": [ "string", "array" ] }, "gene_symbol": { "description": "Gene symbol alias for gencode_id (e.g., \"TP53\", \"COL5A1\")", "type": "string" }, "items_per_page": { "default": 250, "description": "Results per page", "maximum": 100000, "minimum": 1, "type": "integer" }, "operation": { "description": "Operation type", "enum": [ "get_median_gene_expression" ], "type": "string" }, "page": { "default": 0, "description": "Page number for pagination (0-based)", "minimum": 0, "type": "integer" }, "tissue_site_detail_id": { "description": "Optional: Tissue IDs to filter (e.g. ['Liver', 'Brain_Cortex']). Omit for all tissues. See GTEx_get_tissue_sites for valid IDs", "items": { "type": "string" }, "type": "array" } }, "required": [], "type": "object" }