Get Exchange Flow History
GET/v1/cryptodata/on-chain/exchange-flows/{symbol}/history
Archived CEX inflow/outflow for `symbol`, back to 2026-05-28. The rolling windows on `/exchange-flows/{symbol}` have been sampled every ~30 minutes since 2026-05-28. Each point is one sample: the trailing 1h and 24h inflow/outflow/net summed across chains (and exchanges, unless `exchange` is given), plus the 1h window per exchange. `interval=1h` keeps the last sample in each UTC hour; `raw` returns every sample (their 1h windows overlap). At most 93 days per request. Amounts are in the token's own units (USD only for USDT/USDC/DAI) — the same units as the live endpoint.
Price
$0.01/ callEdge cache
300s
Uptime 24h
100.00%
p95
1.28s
Parameters
| Name | In | Type | Description |
|---|---|---|---|
| symbol* | path | string | |
| start | query | string | ISO 8601, unix seconds or unix ms. Default: 7 days before `end` |
| end | query | string | ISO 8601, unix seconds or unix ms (EXCLUSIVE). Default: now |
| interval | query | string = 1h | 1h (last sample per UTC hour) | raw (every sample) |
| exchange | query | string | Only this exchange (e.g. binance) |
| chain | query | string | Only this chain (e.g. eth, tron) |
Code
# 1. No key, no payment: the gateway answers 402 with the price
curl -i "https://api.realtimeapi.ai/v1/cryptodata/on-chain/exchange-flows/BTC/history"
# 2. Pay: retry with a signed x402 payment (any x402 client builds this header)
curl "https://api.realtimeapi.ai/v1/cryptodata/on-chain/exchange-flows/BTC/history" -H "PAYMENT-SIGNATURE: $X402_PAYMENT"// npm i @x402/fetch @x402/core @x402/evm viem
import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";
const client = x402Client.fromConfig({ schemes: [{ network: "eip155:8453", client: new ExactEvmScheme(privateKeyToAccount(PRIVATE_KEY)) }] });
const pay = wrapFetchWithPayment(fetch, client);
const data = await (await pay("https://api.realtimeapi.ai/v1/cryptodata/on-chain/exchange-flows/BTC/history")).json();
console.log(data);# pip install x402 eth-account requests
from eth_account import Account
from x402.clients.requests import x402_requests
session = x402_requests(Account.from_key(PRIVATE_KEY))
print(session.get("https://api.realtimeapi.ai/v1/cryptodata/on-chain/exchange-flows/BTC/history").json())curl "https://api.realtimeapi.ai/v1/cryptodata/on-chain/exchange-flows/BTC/history" -H "X-API-Key: $RTAPI_KEY"Frequently asked questions
How do I get get exchange flow history from CryptoDataAPI?
Send GET https://api.realtimeapi.ai/v1/cryptodata/on-chain/exchange-flows/{symbol}/history. Pay $0.01 per request with x402, or send an X-API-Key header.
What does GET /on-chain/exchange-flows/{symbol}/history cost?
$0.01 per successful request in USDC on Base. Failed requests are never charged.
Can I call this endpoint from an MCP client?
Yes. Connect any MCP client to the RealtimeAPI server and use call_feed with this endpoint's URL, or get_quote to check the price first.