# Stride20k x402 Market Trend Time Series

> Stride20k x402 Market Trend Time Series is a paid API for AI agents from gateway.stride20k.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Returns a time-series of how many services/resources are listed in the x402 ecosystem (by category or total) over a trailing window of 1–30 days, sampled ~3x/day since 2026-07-06.

## Facts

- Endpoint: GET https://gateway.stride20k.com/v1/market-trend
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stride20k-x402-market-trend-time-series-5cdeeaf2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5bAYA_i-32boN7ApA1Mv7

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 stride20k-x402-market-trend-time-series-5cdeeaf2
```

Example prompt: Show me how the number of Inference services listed in the x402 ecosystem has changed over the past 14 days — pull the full time series from the Stride20k market trend tracker.

## When to prefer this

Use this endpoint when you need historical time-series data on x402 ecosystem listing counts — either for a specific Agentic.Market category (Data, Inference, Search, etc.) or for the total catalog. Prefer this over the category-breakdown snapshot endpoint when you need trend data over time rather than a single current snapshot.

## Known failure modes

- Invalid days parameter (outside 1-30 range) returns a validation error
- Unknown category name returns an error or empty dataset
- No data available for the requested window (collector started 2026-07-06) returns empty points array
- Network or upstream cache failure returns a 5xx error

## How this service works

x402 market intelligence time series: how many services/resources are listed per category (Agentic.Market taxonomy) or in total (CDP Bazaar ~23k resources, Agentic.Market ~1.5k services), sampled ~3x/day by our collector since 2026-07-06. Query category=Data|Inference|Search|... or category=all for catalog totals, days=1-30 window. Deterministic reads from our archived observation history; no upstream calls at request time. Free snapshot: /v1/market-pulse.

## Output

A JSON object containing a time-series array of data points (each with an observed timestamp, numeric listing count, metric label, and source), scoped to the requested category and day window, plus metadata about whether the response was cached and when it was fetched.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "data": {
   "note": "Counts are LISTED services/resources per public source, collected ~3x/day. Not transaction volume.",
   "points": [
    {
     "value": 23538,
     "metric": "resources_total",
     "source": "bazaar",
     "observedAt": "2026-07-06T19:43:55.435Z"
    },
    {
     "value": 50,
     "metric": "services_total",
     "source": "agentic-market",
     "observedAt": "2026-07-06T19:43:55.435Z"
    },
    {
     "value": 23538,
     "metric": "resources_total",
     "source": "bazaar",
     "observedAt": "2026-07-06T19:47:36.508Z"
    },
    {
     "value": 1542,
     "metric": "services_total",
     "source": "agentic-market",
     "observedAt": "2026-07-06T19:47:36.508Z"
    }
   ],
   "category": "all",
   "windowDays": 7
  },
  "meta": {
   "cached": false,
   "source": "Stride20k market collector (archived public-source observations)",
   "fetchedAt": "2026-07-04T00:00:00.000Z",
   "attribution": null
  },
  "endpoint": "/v1/market-trend"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stride20k-x402-market-trend-time-series-5cdeeaf2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from gateway.stride20k.com](https://www.zero.xyz/host/gateway.stride20k.com/llms.txt)