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x402 Data API – Price Changes
x402
x402 Data API – Price Changes is a paid API for AI agents from data.kagurazaka.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-29).
Returns x402 API listings whose prices have changed the most (relative) since a snapshot taken N days ago, sorted by biggest relative change first.
Price / call$0.003
Success—
StatusUnknown
How this service works
Data about the x402 market: the CDP Bazaar's listings, sellers, prices and categories, new listings and price changes from snapshots every 6 hours, uptime we measure for every paid listing, and x402 spending of any wallet and revenue of any seller on Base.
Output
A JSON object containing: total count of APIs with price changes, an array of results each with the API resource URL, old price (from_usd), new price (to_usd), and percentage change (change_pct, negative = price drop), plus the ISO timestamp of the comparison snapshot (compared_with). Results are ordered by largest absolute relative change first.
Example use cases
Weekly x402 price volatility report
“Pull the top 20 x402 APIs with the biggest relative price changes over the last 7 days so I can include them in my weekly market report.”
Hunting for newly cheaper x402 APIs
“Which x402 APIs dropped their price the most in the last 3 days? Show me up to 50 results — I want to find recently discounted APIs to add to my workflow.”
Monitoring x402 market pricing shifts
“Check the x402 APIs that changed price the most compared to 30 days ago and give me the top 10 — I'm building a dashboard tracking long-term pricing trends.”
Technical details
Endpoint
GEThttps://data.kagurazaka.dev/v1/market/price-changes?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to identify which x402 APIs have undergone the most significant price movements over a recent period. Ideal for market monitoring dashboards, price alert systems, or cost-optimization workflows that periodically scan the x402 marketplace for pricing anomalies or trends. Prefer this over the general leaderboard endpoints when price change magnitude (not popularity or uptime) is the primary signal.
Side effects
- days parameter out of range (must be 1-30) — likely returns error or default
- limit parameter out of range (must be 1-50) — likely returns error or default
- no price changes detected in the given window — returns empty results array with total: 0
- snapshot data unavailable for the requested date — may return partial or error response
- payment failure (402) if USDC balance insufficient
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"total": 14,
"results": [
{
"to_usd": 0.005,
"from_usd": 0.01,
"resource": "https://api.example/v1/x",
"change_pct": -50
}
],
"compared_with": "2026-10-18T00:00:00Z"
}
}Tags
x402
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