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Token Bid-Ask Spread — Adjacent Period Changes
x402
Token Bid-Ask Spread — Adjacent Period Changes is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-16).
Computes period-over-period changes in bid-ask spread for a supplied sequence of token quote observations
Price / call$0.01
Success—
StatusUnknown
How this service works
Token bid-ask spread — Adjacent period changes: Adjacent period changes for Token bid-ask spread. Supplied token observations only. Deterministic calculation or caller-threshold verdict, not a live scan, safety proof or trade recommendation. Specialised preset in a shared 50-profile, 20-operation engine. 0.01 USDC includes one bounded adjacent period changes report.
Output
Returns a structured report of bid-ask spread changes between each pair of adjacent observation periods, computed deterministically from the supplied bid/ask price rows. The output includes spread deltas (difference in spread from one period to the next) for each consecutive pair of observations, up to 200 rows. This is a deterministic calculation — not a live market scan, safety proof, or trade recommendation.
Example use cases
Liquidity shift detection for DeFi token
“I have a series of bid and ask prices for a DeFi token sampled every hour — can you tell me how the bid-ask spread changed between each consecutive period? Here are the observations: bid 0.98 ask 1.02, bid 1.05 ask 1.09, bid 0.97 ask 1.03, bid 1.10 ask 1.15.”
Spread widening alert for trading bot
“My trading bot recorded these token quote snapshots and I need to know how the spread shifted from one period to the next — bid 2.10 ask 2.20, bid 2.05 ask 2.18, bid 2.30 ask 2.50, bid 2.25 ask 2.40. Can you compute the adjacent period spread changes?”
Pre-trade spread analysis for market maker
“Before I update my market-making quotes, I want to see the period-to-period changes in bid-ask spread from these recent observations: bid 100.50 ask 101.00, bid 100.40 ask 101.10, bid 100.60 ask 100.90, bid 100.30 ask 101.20. Can you run the adjacent period changes calculation?”
Technical details
Endpoint
POSThttps://market.datapackvibe.com/x402/assistant-bx-token-quote-spread-period-changes?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you have a time-ordered sequence of token bid and ask price observations and need a deterministic, period-by-period spread change report without running a live market scan. It is ideal for post-hoc analysis, backtesting pipelines, market-making calibration, or spread monitoring workflows where you supply your own quote data. Prefer alternatives if you need live market data feeds, trade recommendations, or safety signals.
Side effects
- Fewer than 2 rows supplied — minimum of 2 bid/ask pairs required
- Ask or bid price is zero or negative — both must be strictly positive (exclusiveMinimum: 0)
- Ask or bid price exceeds maximum allowed value (10^16)
- Malformed row objects missing required 'ask' or 'bid' fields
- More than 200 rows supplied — exceeds maxItems limit
- Payment failure or insufficient USDC balance for x402 protocol
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| rows | array |
Tags
x402
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