WGO Data API

WGO provides daily BTC and ETH data for two focused questions:

1. Is ETF capital flowing in or out now, and has that direction persisted?
2. Is the cumulative long-term-capital proxy increasing or decreasing?

It also exposes daily on-chain fundamentals for the same assets. The API is designed for daily reports and historical comparisons, not intraday trading or derivatives signals.

Coverage

Dataset	Assets	Granularity
US spot ETF aggregate	BTC, ETH	Asset × US trading day
US spot ETF funds	BTC, ETH	Fund ticker × US trading day
On-chain fundamentals	BTC, ETH	Asset × UTC day

ETF data is not tick-level data. The finest available ETF flow record is one fund ticker for one trading day.

API base

https://api.mobiusquant.ai/api/wgo/v1

All /v1/ endpoints require a MobiusQuant Bearer token authorized for wgo:read.

Endpoints

Method and path	Purpose
GET /etf/{symbol}/overview	Latest direction, streak, period flow, and long-term-capital proxy
GET /etf/{symbol}/daily	Historical daily aggregate ETF flow
GET /etf/{symbol}/funds	Per-fund breakdown for one trading day
GET /assets/{asset}/onchain	Historical daily on-chain fundamentals

symbol and asset currently accept only BTC or ETH.

Documentation

• Quick start
• ETF endpoints
• On-chain endpoint
• Data semantics and freshness
• Authentication, limits, and errors
• Interactive Swagger
• Documentation snapshot of OpenAPI
• Product llms.txt

Research data, not execution data

The service reports daily observations and derived summaries. Do not treat it as a real-time market feed, order-flow feed, or identification of actual investor types.