# Token Observed Price Change — Threshold Classification

> Token Observed Price Change — Threshold Classification is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-14).

Classifies whether a token's observed price change falls within a caller-specified lower/upper threshold range, returning a deterministic verdict for each supplied token price pair.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-token-price-change-threshold?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/token-observed-price-change-threshold-classification-11d29093
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4Ke434zoixS2q2aWQ-SDS

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 token-observed-price-change-threshold-classification-11d29093 -d '<json body>'
```

Example prompt: I have a batch of token price observations — previous prices of 1.00 and 1.10 USDC, and current prices of 1.20 and 1.32 USDC — can you classify whether their price changes fall within a lower threshold of 0 and an upper threshold of 25?

## When to prefer this

Choose this endpoint when you need a fast, deterministic, per-row verdict on whether a token's observed price change sits inside a caller-defined band. It is not a live price feed, market scanner, or trade signal — it purely classifies supplied historical or snapshot observations. Prefer it when you already have the price pairs in hand and need structured classification output without building custom logic.

## Known failure modes

- Fewer than 2 rows supplied — minItems:2 violation
- current_price or previous_price is zero or negative — exclusiveMinimum:0 enforced
- More than 200 rows submitted — maxItems:200 exceeded
- lower threshold greater than upper threshold — logically invalid band, may yield all-out-of-band results
- Non-numeric values passed for price fields — schema validation error
- Payment not processed or insufficient USDC balance — x402 payment failure

## How this service works

Token observed price change — Threshold classification: Threshold classification for Token observed price change. 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 threshold classification report.

## Output

Returns a bounded threshold classification report for each supplied token price row, indicating whether the observed price change (derived from current_price and previous_price) falls within the caller-specified lower and upper thresholds. The result is deterministic — no live market data, no predictive scoring, just a verdict per row.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "current_price",
     "previous_price"
    ],
    "properties": {
     "current_price": {
      "type": "number",
      "default": 1.2,
      "maximum": 10000000000000000,
      "minimum": 0,
      "exclusiveMinimum": 0
     },
     "previous_price": {
      "type": "number",
      "default": 1,
      "maximum": 10000000000000000,
      "minimum": 0,
      "exclusiveMinimum": 0
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "current_price": 1.2,
     "previous_price": 1
    },
    {
     "current_price": 1.32,
     "previous_price": 1.1
    },
    {
     "current_price": 1.2,
     "previous_price": 1
    },
    {
     "current_price": 1.32,
     "previous_price": 1.1
    }
   ],
   "maxItems": 200,
   "minItems": 2
  },
  "lower": {
   "type": "number",
   "default": 0,
   "maximum": 1000000000000000000,
   "minimum": -1000000000000000000
  },
  "upper": {
   "type": "number",
   "default": 100,
   "maximum": 1000000000000000000,
   "minimum": -1000000000000000000
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/token-observed-price-change-threshold-classification-11d29093/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)