# Token Circulating Market Value — Adjacent Period Changes

> Token Circulating Market Value — 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 2026-10-20).

Computes period-over-period changes in a token's circulating market cap from a supplied series of price and circulating supply observations.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-token-market-cap-period-changes?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/token-circulating-market-value-adjacent-period-changes-f76fab89
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dlU44Rh-S00L-c42xtau4

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-circulating-market-value-adjacent-period-changes-f76fab89 -d '<json body>'
```

Example prompt: I have four token snapshots: price $2.00 with 1,000,000 circulating tokens, then $2.20 with 1,100,000, then back to $2.00 with 1,000,000, then $2.20 with 1,100,000 again — can you calculate the circulating market cap and show me how it changed between each adjacent period?

## When to prefer this

Choose this endpoint when you have a time-series of token price and circulating supply observations and need deterministic, period-by-period market cap change calculations. Ideal for reporting pipelines, portfolio analytics, or token performance dashboards where you supply the raw observations and want structured adjacent-period deltas without building the calculation yourself.

## Known failure modes

- Fewer than 2 rows supplied — minimum 2 observations required
- price_usd or circulating_tokens is zero or negative — both must be exclusively greater than 0
- More than 200 rows submitted — maxItems limit exceeded
- Non-numeric values in price_usd or circulating_tokens fields
- Missing required fields price_usd or circulating_tokens in any row
- Payment not attached or insufficient — 0.01 USDC per call required via x402

## How this service works

Token circulating market value — Adjacent period changes: Adjacent period changes for Token circulating market value. 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 bounded report of adjacent period changes in circulating market cap for each consecutive pair of input rows, computed deterministically from the supplied price_usd and circulating_tokens values. Includes the calculated market cap per period and the delta between each adjacent pair. Not a live market scan or trade recommendation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "price_usd",
     "circulating_tokens"
    ],
    "properties": {
     "price_usd": {
      "type": "number",
      "default": 2,
      "maximum": 10000000000000000,
      "minimum": 0,
      "exclusiveMinimum": 0
     },
     "circulating_tokens": {
      "type": "number",
      "default": 1000000,
      "maximum": 10000000000000000,
      "minimum": 0,
      "exclusiveMinimum": 0
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "price_usd": 2,
     "circulating_tokens": 1000000
    },
    {
     "price_usd": 2.2,
     "circulating_tokens": 1100000
    },
    {
     "price_usd": 2,
     "circulating_tokens": 1000000
    },
    {
     "price_usd": 2.2,
     "circulating_tokens": 1100000
    }
   ],
   "maxItems": 200,
   "minItems": 2
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/token-circulating-market-value-adjacent-period-changes-f76fab89/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)