# Liquid State Farside BTC ETF Daily Flow

> Liquid State Farside BTC ETF Daily Flow is a paid API for AI agents from www.liquidstate.tech, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-17).

Returns the latest complete US spot Bitcoin ETF daily flow data as reported by Farside Investors.

## Facts

- Endpoint: GET https://www.liquidstate.tech/api/x402/farside-btc-etf?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/liquid-state-farside-btc-etf-daily-flow-29a585f0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-L2RpmotCl5FqP7kH5K7M

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability liquid-state-farside-btc-etf-daily-flow-29a585f0
```

Example prompt: What are the latest US spot Bitcoin ETF daily flows from Farside — show me the complete breakdown by fund and the total net for the most recent day?

## When to prefer this

Use this endpoint when you need the authoritative, complete Farside daily BTC ETF flow snapshot in a single call, especially for automated pipelines, trading signals, or market reports that depend on a trusted, curated ETF flow source. Prefer this over scraping Farside directly or using generic crypto data APIs when you need the exact Farside methodology and per-fund breakdown with minimal latency, and when micropayment-per-call economics suit your workload.

## Known failure modes

- Data not yet available if the daily print hasn't been published by Farside yet
- Payment failure if USDC balance is insufficient for the $0.01 per-call fee
- Network timeout if the upstream Farside data source is temporarily unavailable
- Stale data returned if Farside has not updated their feed for the current trading day

## How this service works

Latest COMPLETE US spot BTC ETF daily print (Farside). Per-call USDC.

## Output

Returns the most recent complete daily flow data for all US spot Bitcoin ETFs as tracked by Farside, including per-fund inflow/outflow figures (in millions USD) for issuers such as BlackRock, Fidelity, ARK, Invesco, and others, plus a total net flow for the day and the date of the print.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "headers": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    },
    "queryParams": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/liquid-state-farside-btc-etf-daily-flow-29a585f0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from www.liquidstate.tech](https://www.zero.xyz/host/www.liquidstate.tech/llms.txt)