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Blockchain.com Explorer Market Cap Chart API
x402
Blockchain.com Explorer Market Cap Chart API is a paid API for AI agents from api.blockchain.info, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-02).
Retrieves historical Bitcoin market capitalization chart data from Blockchain.com Explorer, with configurable timespan, rolling averages, and output format
Price / call$0.001
Success—
StatusUnknown
How this service works
Paid AI-agent access to Blockchain.com Explorer API
Output
Returns a structured JSON object (or raw CSV) containing historical Bitcoin market capitalization data points with timestamps, optionally including metadata about the chart and values smoothed by a configurable rolling average window. JSON responses include metadata fields and a values array; CSV responses contain timestamp and value columns only.
Example use cases
Bitcoin market cap trend analysis
“Can you get me Bitcoin's market cap history from Blockchain.com for the past 3 years with a 24-hour rolling average in JSON so I can analyze long-term growth trends?”
Short-term crypto market cap monitoring
“Fetch the last 7 days of Bitcoin market cap data from Blockchain.com with an 8-hour rolling average — I want to see recent price cap movements.”
Export market cap data to CSV
“Download Bitcoin's market cap chart data for the past year from Blockchain.com in CSV format with sampling applied so I can load it into a spreadsheet.”
Technical details
Endpoint
POSThttps://api.blockchain.info/explorer-gateway-kt/x402/charts/market-cap?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need authoritative historical Bitcoin market capitalization data directly from Blockchain.com's explorer infrastructure, especially when you want configurable rolling averages, flexible timespans (hours to years), and the choice between JSON and CSV output. Prefer this over generic crypto data APIs when Blockchain.com provenance is important or when you need fine-grained control over averaging windows and sampling.
Side effects
- Invalid timespan format returns an error (e.g. unsupported duration string)
- Invalid rollingAverage window string causes a bad request response
- Payment not included or insufficient USDC triggers a 402 Payment Required error
- Unsupported format enum value (not 'json' or 'csv') returns a validation error
- Network or gateway timeout if Blockchain.com upstream is unavailable
- Rate limiting if too many requests are sent in rapid succession
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| cors | boolean | Enable CORS headers |
| format | string | Response format: - `json` — Returns structured JSON with metadata and values - `csv` — Returns raw CSV data with timestamp and value columns (no metadata) |
| sampled | boolean | Apply sampling to reduce data points |
| metadata | boolean | Include metadata in response |
| timespan | string | Time period (e.g., "24h", "7d", "1y", "3y") |
| rollingAverage | string | Rolling average window (e.g., "8h", "24h") |
Output
Schema · Response
{
"type": "json",
"format": "application/json",
"example": {
"name": "Market Capitalization",
"unit": "USD",
"period": "day",
"status": "ok",
"values": [
{
"x": 1704067200,
"y": 1867423000000
},
{
"x": 1704153600,
"y": 1900512000000
}
],
"description": "The total USD value of bitcoin supply in circulation, as calculated by the daily average market price across major exchanges."
}
}Tags
x402
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