Added value: +{
+  "description": "Number of gnomAD coverage buckets summarized: every returned bucket overlapping the target bases. gnomAD returns every bucket between the first and last record of a track, so an empty bucket inside that span counts as zero depth; buckets past the outermost records are not returned and not counted.",
+  "type": "number"
+}

Added value: +{
+  "description": "Width of each gnomAD coverage bucket in bp: 1 for a region spanning under 850 bp, otherwise about 1/500 of the queried size. Depth and fraction values describe buckets, not single bases.",
+  "type": "number"
+}

Previous value: -"Mean fraction of samples covered at ≥1×; null when no data."New value: +"Fraction of samples covered at ≥1×, averaged over the summarized buckets (gnomAD rounds each bucket's fraction up to the next 0.01); null when no data."

Previous value: -"Mean fraction of samples covered at ≥10×; null when no data."New value: +"Fraction of samples covered at ≥10×, averaged over the summarized buckets (gnomAD rounds each bucket's fraction up to the next 0.01); null when no data."

Previous value: -"Mean fraction of samples covered at ≥100×; null when no data."New value: +"Fraction of samples covered at ≥100×, averaged over the summarized buckets (gnomAD rounds each bucket's fraction up to the next 0.01); null when no data."

Previous value: -"Mean fraction of samples covered at ≥15×; null when no data."New value: +"Fraction of samples covered at ≥15×, averaged over the summarized buckets (gnomAD rounds each bucket's fraction up to the next 0.01); null when no data."

Previous value: -"Mean fraction of samples covered at ≥20×; null when no data."New value: +"Fraction of samples covered at ≥20×, averaged over the summarized buckets (gnomAD rounds each bucket's fraction up to the next 0.01); null when no data."

Previous value: -"Mean fraction of samples covered at ≥25×; null when no data."New value: +"Fraction of samples covered at ≥25×, averaged over the summarized buckets (gnomAD rounds each bucket's fraction up to the next 0.01); null when no data."

Previous value: -"Mean fraction of samples covered at ≥30×; null when no data."New value: +"Fraction of samples covered at ≥30×, averaged over the summarized buckets (gnomAD rounds each bucket's fraction up to the next 0.01); null when no data."

Previous value: -"Mean fraction of samples covered at ≥5×; null when no data."New value: +"Fraction of samples covered at ≥5×, averaged over the summarized buckets (gnomAD rounds each bucket's fraction up to the next 0.01); null when no data."

Previous value: -"Mean fraction of samples covered at ≥50×; null when no data."New value: +"Fraction of samples covered at ≥50×, averaged over the summarized buckets (gnomAD rounds each bucket's fraction up to the next 0.01); null when no data."

Previous value: -"Mean read depth averaged across positions; null when no data."New value: +"Mean read depth: the average of the summarized buckets’ mean depths; null when no data."

Previous value: -"Median read depth across positions; null when no data."New value: +"Median, across the summarized buckets, of each bucket’s depth (the average of its per-base medians); null when no data."

Previous value: -"Number of base positions summarized across the target."New value: +"Target bases inside the summarized buckets: of start..stop for a region, of the exons ±75 bp for a gene or transcript. Falls short of the target when the track has no records at its edges (typically outside the exome capture); those bases are left out, not counted as zero depth."

Previous value: -[
-  "source",
-  "positions",
-  "mean_depth",
-  "median_depth",
-  "fraction_over_1",
-  "fraction_over_5",
-  "fraction_over_10",
-  "fraction_over_15",
-  "fraction_over_20",
-  "fraction_over_25",
-  "fraction_over_30",
-  "fraction_over_50",
-  "fraction_over_100"
-]New value: +[
+  "source",
+  "positions",
+  "bucket_count",
+  "bucket_size",
+  "mean_depth",
+  "median_depth",
+  "fraction_over_1",
+  "fraction_over_5",
+  "fraction_over_10",
+  "fraction_over_15",
+  "fraction_over_20",
+  "fraction_over_25",
+  "fraction_over_30",
+  "fraction_over_50",
+  "fraction_over_100"
+]

Previous value: -"Gene — HGNC symbol (e.g. PCSK9) or Ensembl gene ID (e.g. ENSG00000169174). Obtain a stable ID from ensembl_lookup_gene. Mutually exclusive with transcript_id and region; blank means omitted."New value: +"Gene — HGNC symbol (e.g. PCSK9) or Ensembl gene ID (e.g. ENSG00000169174). Obtain a stable ID from ensembl_lookup_gene. Mitochondrial genes (e.g. MT-TL1) are not served. Mutually exclusive with transcript_id and region; blank means omitted."

Previous value: -[
-  {
-    "const": "",
-    "type": "string"
-  },
-  {
-    "description": "Genomic region chrom-start-stop (1-based inclusive, e.g. 1-55039447-55064852).",
-    "pattern": "^[0-9XYM]+-\\d+-\\d+$",
-    "type": "string"
-  }
-]New value: +[
+  {
+    "const": "",
+    "type": "string"
+  },
+  {
+    "description": "Genomic region chrom-start-stop (1-based inclusive, e.g. 1-55039447-55064852) on chromosome 1–22, X, or Y, optional chr prefix.",
+    "pattern": "^(?:chr)?[0-9A-Z]+-\\d+-\\d+$",
+    "type": "string"
+  }
+]

Previous value: -"Genomic region chrom-start-stop (1-based inclusive, e.g. 1-55039447-55064852). Mutually exclusive with gene and transcript_id."New value: +"Genomic region chrom-start-stop (1-based inclusive, e.g. 1-55039447-55064852): chromosome 1–22, X, or Y with an optional chr prefix (mitochondrial regions are not served) and a span (stop − start) under 2,500,000 bp. Mutually exclusive with gene and transcript_id."

Previous value: -"Machine-readable failure mode. Declared by this tool: `invalid_target`: Not exactly one of gene, transcript_id, or region was supplied. `incoherent_build`: reference_genome was supplied but does not match the dataset. Other values are possible when a failure originates below the handler."New value: +"Machine-readable failure mode. Declared by this tool: `invalid_target`: Not exactly one of gene, transcript_id, or region was supplied. `incoherent_build`: reference_genome was supplied but does not match the dataset. `invalid_region`: The region names a chromosome outside 1–22, X, Y, or breaks the coordinate bounds. `region_too_large`: The region spans 2,500,000 bp or more, beyond what gnomAD summarizes at once. `mitochondrial_unsupported`: The gene, transcript, or region is on the mitochondrial chromosome (M or MT). `graphql_error`: gnomAD rejected the coverage query with a GraphQL error. `upstream_unavailable`: gnomAD stayed unavailable or throttled through every retry. `upstream_timeout`: Every attempt to reach gnomAD timed out. `upstream_access`: gnomAD refused the request (access denied). `invalid_upstream_response`: gnomAD kept answering with a response that failed validation. Other values are possible when a failure originates below the handler."

Previous value: -[
-  "invalid_target",
-  "incoherent_build"
-]New value: +[
+  "invalid_target",
+  "incoherent_build",
+  "invalid_region",
+  "region_too_large",
+  "mitochondrial_unsupported",
+  "graphql_error",
+  "upstream_unavailable",
+  "upstream_timeout",
+  "upstream_access",
+  "invalid_upstream_response"
+]

Added value: +[
+  {
+    "description": "Gene — HGNC symbol (e.g. PCSK9) or Ensembl gene ID (e.g. ENSG00000169174). Obtain a stable ID from ensembl_lookup_gene.",
+    "minLength": 2,
+    "type": "string"
+  },
+  {
+    "description": "Blank — the gene is treated as omitted.",
+    "maxLength": 0,
+    "type": "string"
+  }
+]

Previous value: -"Gene — HGNC symbol (e.g. PCSK9) or Ensembl gene ID (e.g. ENSG00000169174). Obtain a stable ID from ensembl_lookup_gene."New value: +"Gene — HGNC symbol (e.g. PCSK9) or Ensembl gene ID (e.g. ENSG00000169174). Obtain a stable ID from ensembl_lookup_gene. Mutually exclusive with transcript_id and region; blank means omitted."

Removed value: -2

Removed value: -"string"

Previous value: -"Ensembl transcript ID (e.g. ENST00000302118). Mutually exclusive with gene and region."New value: +"Ensembl transcript ID (e.g. ENST00000302118). Mutually exclusive with gene and region; blank means omitted."

Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]

Added value: +[
+  "number",
+  "null"
+]

Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]

Added value: +[
+  "number",
+  "null"
+]

Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]

Added value: +[
+  "number",
+  "null"
+]

Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]

Added value: +[
+  "number",
+  "null"
+]

Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]

Added value: +[
+  "number",
+  "null"
+]

Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]

Added value: +[
+  "number",
+  "null"
+]

Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]

Added value: +[
+  "number",
+  "null"
+]

Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]

Added value: +[
+  "number",
+  "null"
+]

Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]

Added value: +[
+  "number",
+  "null"
+]

Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]

Added value: +[
+  "number",
+  "null"
+]

Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]

Added value: +[
+  "number",
+  "null"
+]