# Token Observed Price Change — Named Scenario Comparison

> Token Observed Price Change — Named Scenario Comparison is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-13).

Compares multiple named price-change scenarios for a token against a baseline, returning a deterministic percentage-change report for each labeled scenario.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-token-price-change-scenario?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/token-observed-price-change-named-scenario-comparison-abbe4d4d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PX6nGot1ygyVIrrQ9Gpj7

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-named-scenario-comparison-abbe4d4d -d '<json body>'
```

Example prompt: Compare the token price change across three scenarios: baseline goes from $1.00 to $1.20, then compare 'Bull run' where current price is $1.50, 'Bear dip' where current price is $0.90, and 'Stable' where current price is $1.05 — give me the percentage change for each.

## When to prefer this

Choose this endpoint when you need to compare token price percentage changes across multiple explicitly named hypothetical scenarios in a single call, with full control over labels and price overrides, rather than running single calculations sequentially or doing sensitivity grid sweeps. Ideal for structured what-if reporting where scenario names matter for downstream presentation.

## Known failure modes

- Missing or zero previous_price causes division error or validation rejection
- Scenarios array empty or exceeds 20 items returns validation error
- current_price or previous_price set to zero or negative triggers exclusiveMinimum violation
- Label string empty or exceeds 80 characters fails schema validation
- Overrides object with no properties fails minProperties:1 constraint
- Payment not completed results in 402 response blocking execution

## How this service works

Token observed price change — Named scenario comparison: Named scenario comparison 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 named scenario comparison report.

## Output

Returns a structured report containing the baseline price-change calculation alongside individual named scenario results, each showing the computed percentage change derived from the supplied current and previous price overrides — no live market data, strictly deterministic arithmetic on caller-supplied values.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "baseline": {
   "type": "object",
   "default": {
    "current_price": 1.2,
    "previous_price": 1
   },
   "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
  },
  "scenarios": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "label",
     "overrides"
    ],
    "properties": {
     "label": {
      "type": "string",
      "maxLength": 80,
      "minLength": 1
     },
     "overrides": {
      "type": "object",
      "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
       }
      },
      "minProperties": 1,
      "additionalProperties": false
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "label": "Supplied alternative",
     "overrides": {
      "current_price": 1.32
     }
    }
   ],
   "maxItems": 20,
   "minItems": 1
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/token-observed-price-change-named-scenario-comparison-abbe4d4d/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)