# Coin Details (`market_coin_details`)

> Price, market cap, all-time high and low, and the project's own description of itself.

- Category: Market data
- MCP tool: `market_coin_details`
- REST: `GET /market/coins/{coin_id}`
- x402 price: $0.01 per call (USDC on Base)
- HTML: https://www.f1ow.com/docs/tools/market_coin_details

## What it does

Fetches price, market cap, ATH/ATL and description for a coin by its coin ID (e.g. 'bitcoin', 'ethereum') or by ticker symbol (e.g. 'BTC', 'WAVES'). IDs are case-sensitive; a symbol, or an ID in the wrong case, is resolved by search and the response names the ID actually fetched, so a resolution is never silent.

## Parameters

| Name | Type | In | Required | Description |
| --- | --- | --- | --- | --- |
| `coin_id` | string | path | yes | Coin ID (e.g. 'bitcoin') or ticker symbol (e.g. 'BTC'). IDs are case-sensitive; symbols are resolved by search. |

## Call it

### cURL

```bash
curl "https://mcp.f1ow.com/v1/market/coins/bitcoin" \
  -H "Authorization: Bearer $F1OW_API_KEY"
```

### MCP

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "market_coin_details",
    "arguments": {
      "coin_id": "bitcoin"
    }
  }
}
```

### TypeScript

```ts
const res = await fetch("https://mcp.f1ow.com/v1/market/coins/bitcoin", {
  headers: { Authorization: `Bearer ${process.env.F1OW_API_KEY}` },
});
const data = await res.json(); // the tool's result as JSON, typed in the OpenAPI spec
console.log(data);
```

### Python

```python
import os, requests

res = requests.get(
    "https://mcp.f1ow.com/v1/market/coins/bitcoin",
    headers={"Authorization": f"Bearer {os.environ['F1OW_API_KEY']}"},
)
data = res.json()  # the tool's result as JSON, typed in the OpenAPI spec
print(data)
```

### WebSocket

```jsonc
// wss://mcp.f1ow.com/v1/ws — subprotocol "jsonrpc-2.0", Authorization: Bearer <key>
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "market_coin_details",
    "arguments": {
      "coin_id": "bitcoin"
    }
  }
}

// Or push a fresh result whenever it changes (minimum interval 15 s)
{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "subscriptions/subscribe",
  "params": {
    "name": "market_coin_details",
    "arguments": {
      "coin_id": "bitcoin"
    },
    "intervalSeconds": 60
  }
}
```

### x402

```bash
# No account: the first call answers 402 with a PAYMENT-REQUIRED challenge;
# an x402 client pays it in USDC on Base and retries.
curl "https://mcp.f1ow.com/x402/v1/market/coins/bitcoin"
```

## Sample response

Captured 2026-11-13. The JSON is what REST and WebSocket return and the `structuredContent` of an MCP call (trimmed):

```json
{
  "athUsd": 126080,
  "atlUsd": 67.81,
  "change24hPct": -6.7651,
  "description": "Bitcoin is the world's first decentralized cryptocurrency, created in 2009 by the pseudonymous Satoshi Nakamoto. It enables peer-to-peer electronic cash transactions without intermediaries like banks or governments, operating on a blockchain secured by Proof of Work mining and the SHA-256 cryptographic algorithm. \n\nWith a fixed supply cap of 21 million coins and programmatic halvings every four ye…",
  "homepage": "http://www.bitcoin.org",
  "id": "bitcoin",
  "marketCapUsd": 1379930220362,
  "name": "Bitcoin",
  "priceUsd": 68623,
  "symbol": "BTC",
  "generatedAt": "2026-11-13T08:05:38.7785282+00:00"
}
```

Over MCP the text report a model reads comes with it:

```text
Bitcoin (BTC)
Bitcoin is the world's first decentralized cryptocurrency, created in 2009 by the pseudonymous Satoshi Nakamoto. It enables peer-to-peer electronic cash transactions without intermediaries like banks or governments, operating on a blockchain secured by Proof of Work mining and the SHA-256 cryptographic algorithm. 

With a fixed supply cap of 21 million coins and programmatic halvings every four ye...

Price: $68623.00 | 24h: -6.77% | MCap: $1.38T
ATH: $126080.00 | ATL: $67.8100
Homepage: http://www.bitcoin.org
```

## Related tools

- [Spot & Perp Quotes](https://www.f1ow.com/docs/tools/market_quotes) — Spot and perp mark side by side, with funding, open interest, long/short ratio and the day's liquidations. Five providers merged into one snapshot, cached for thirty seconds.
- [Candles](https://www.f1ow.com/docs/tools/market_candles) — Spot or perpetual OHLCV candles with venue routing and fallback, for the timeframes your analysis needs. For months of paged candles or derivatives series, use Bulk History.
- [Bulk History](https://www.f1ow.com/docs/tools/market_history) — Paged spot/perp candles, aggregate open interest, funding or long/short liquidations. Up to 1,000 rows per call with a backward-page cursor, explicit time bounds and a forming-row flag — for historical research and backtests.
- [Market Overview](https://www.f1ow.com/docs/tools/market_overview) — The global frame in one read: total market cap, BTC and ETH dominance, Fear & Greed, Altcoin Season.