---
title: "Crypto-ETF net flows"
method: GET
path: "/crypto/etf/flows"
tags: ["crypto"]
---

# Crypto-ETF net flows

`GET /crypto/etf/flows`

## Request

- Base URL: `https://kresmion.com/v1`
- URL: `https://kresmion.com/v1/crypto/etf/flows`
- Auth: HTTP bearer

Aggregate spot-ETF net flows + per-product breakdown for BTC / ETH / SOL (or ALL). BTC and ETH: Farside Investors is NOT used by this API. The per-fund flow figures Kresmion holds for BTC and ETH trading sessions come from that compiler, which grants no redistribution licence, or from fund-issuer data not yet cleared for redistribution, so every BTC/ETH NYSE-session day is served with total_kind 'withheld', null flow values and withheld_reason 'source_not_licensed'; days with no NYSE session are a genuine zero and are served. Window sums, the 7-day headline, latest_session and per-fund flow_period_usd / flow_1d_usd are recomputed from the served days only, so for BTC/ETH they are null. meta-level flow_withheld says how many days were withheld. Fund AUM, the fund list and the coverage denominators are still served. SOL has no published per-fund flow source, so SOL flows are derived from each fund's AUM/NAV change (AUM from Stock Analysis, NAV and prices from a market-data vendor). Coverage: every day carries total_kind ('total' only when every fund active in Kresmion's fund registry that day is known, 'reported_subtotal' when only some are, 'withheld' as above), funds_known, funds_active, aum_coverage (0..1, null when any active fund's AUM is unknown) and missing_tickers. A day's net_flow_usd is the TOTAL and is null unless total_kind is 'total'; reported_subtotal_usd carries what the known funds add up to. Never present a reported_subtotal as a market total. Note the Grayscale mini trusts trade as BTC and ETH: /etf/history/BTC is that fund, not the asset.

## Query parameters

- `asset` string
- `days` integer
- `period` string, nullable

## Headers

- `authorization` string, nullable

## Response `200`

Successful Response

- object

## Other responses

- `422`: Validation Error

---

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