# Filecoin Bid-Ask Spread Check

> Filecoin Bid-Ask Spread Check is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).

Calculates the latest absolute and percentage bid-ask spread for the FIL-USD market using Coinbase Exchange public data.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/demand-market-filecoin-spread-check?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/filecoin-bid-ask-spread-check-871a1e88
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_God6ghZegtU_5YmYyixOm

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 filecoin-bid-ask-spread-check-871a1e88 -d '<json body>'
```

Example prompt: What's the current bid-ask spread for Filecoin on the USD market — both the absolute dollar difference and the percentage spread?

## When to prefer this

Use this endpoint when you need a quick, real-time snapshot of bid-ask spread for Filecoin (FIL-USD) on Coinbase Exchange, especially for pre-trade liquidity checks, spread monitoring, or market microstructure analysis. It is purpose-built for FIL-USD spread calculation rather than raw order book retrieval.

## Known failure modes

- Invalid product ID returns an error or empty result
- Coinbase market data unavailable due to outage returns an error
- Product ID for a non-USD pair may not be supported
- Stale or delayed data during low-liquidity periods

## How this service works

Filecoin Bid-ask spread check: Calculate the latest absolute and percentage bid-ask spread. Coinbase Exchange public USD market data; not investment advice.

## Output

Returns the current best bid price, best ask price, absolute spread (ask minus bid), and percentage spread for the specified Coinbase USD trading pair (defaulting to FIL-USD).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "product": {
   "type": "string",
   "default": "FIL-USD",
   "description": "Coinbase USD product ID; defaults to FIL-USD."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/filecoin-bid-ask-spread-check-871a1e88/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)