Cortexa research tool·genomics·epigenomics

UCSC Get Cpg Islands

Get CpG island annotations for a genomic region from UCSC Genome Browser. CpG islands are genomic regions with high CpG dinucleotide density, often found at gene promoters. Methylation of CpG islands is associated with gene silencing. Returns CpG island locations, length, CpG count, GC content, and observed/expected CpG ratio. Use this to identify CpG islands near genes of interest for methylation analysis, or to characterize the regulatory landscape of a genomic region.

Livelast probed 2026-05-01 01:00Z· 97msCortexa

Status

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

Last probed: 1d ago
Last success: 1d ago
Last latency: 97ms

Schema

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

{
  "properties": {
    "chrom": {
      "description": "Chromosome name (e.g., 'chr17', 'chr1', 'chrX').",
      "type": "string"
    },
    "end": {
      "description": "End position (0-based, exclusive).",
      "type": "integer"
    },
    "genome": {
      "default": "hg38",
      "description": "Genome assembly (e.g., 'hg38', 'hg19', 'mm10', 'mm39').",
      "type": "string"
    },
    "start": {
      "description": "Start position (0-based, inclusive).",
      "type": "integer"
    }
  },
  "required": [
    "chrom",
    "start",
    "end"
  ],
  "type": "object"
}

Examples (1)

Default UCSC Get Cpg Islands call

public-safeinput

{
  "chrom": "",
  "end": 1,
  "start": 1
}

Expected response keys: success

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

Identifiers

Catalog ID: tu_UCSC_get_cpg_islands
Tool name: UCSC_get_cpg_islands
Added: 2026-05-01 00:58Z
Tags: tooluniverse

UCSC Get Cpg Islands

Livelast probed 2026-05-01 01:00Z· 97msCortexa

Schema

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

{ "properties": { "chrom": { "description": "Chromosome name (e.g., 'chr17', 'chr1', 'chrX').", "type": "string" }, "end": { "description": "End position (0-based, exclusive).", "type": "integer" }, "genome": { "default": "hg38", "description": "Genome assembly (e.g., 'hg38', 'hg19', 'mm10', 'mm39').", "type": "string" }, "start": { "description": "Start position (0-based, inclusive).", "type": "integer" } }, "required": [ "chrom", "start", "end" ], "type": "object" }