# Burned Token Fraction — Adjacent Period Changes

> Burned Token Fraction — 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 2026-10-15).

Computes period-over-period changes in the burned token fraction (burned/issued ratio) across a supplied sequence of token supply observations.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-token-burned-supply-period-changes?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/burned-token-fraction-adjacent-period-changes-1c7abf70
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SBhg3GKIEdLkvmWHZmNYP

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 burned-token-fraction-adjacent-period-changes-1c7abf70 -d '<json body>'
```

Example prompt: Can you calculate the adjacent period changes in burned token fraction for my token supply data? I have 4 periods: period 1 had 100,000 burned out of 2,000,000 issued, period 2 had 110,000 burned out of 2,200,000 issued, period 3 had 100,000 burned out of 2,000,000 issued, and period 4 had 110,000 burned out of 2,200,000 issued.

## When to prefer this

Choose this endpoint when you need a lightweight, deterministic, per-call calculation of how the burned token fraction shifts between consecutive supply snapshots, without requiring a live blockchain connection or complex analytics pipeline. It is ideal for agents processing historical or batch token supply data where the caller supplies the observations directly. It is not suitable for live on-chain scanning, safety audits, or trade signals.

## Known failure modes

- Fewer than 2 rows supplied — endpoint requires minItems: 2
- issued_tokens set to 0 — violates exclusiveMinimum constraint and causes division-by-zero
- burned_tokens or issued_tokens exceed maximum of 10^16 — schema validation rejection
- More than 200 rows supplied — exceeds maxItems limit
- Non-numeric values passed in numeric fields — schema validation error
- Payment failure or insufficient USDC balance — x402 payment protocol rejection

## How this service works

Reported burned token fraction — Adjacent period changes: Adjacent period changes for Reported burned token fraction. 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 structured report of the burned token fraction (burned_tokens/issued_tokens) computed for each input row, along with the adjacent period-to-period changes (deltas) in that fraction. The output is a deterministic calculation based solely on the supplied observations — not a live market scan or trade recommendation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "burned_tokens",
     "issued_tokens"
    ],
    "properties": {
     "burned_tokens": {
      "type": "number",
      "default": 100000,
      "maximum": 10000000000000000,
      "minimum": 0
     },
     "issued_tokens": {
      "type": "number",
      "default": 2000000,
      "maximum": 10000000000000000,
      "minimum": 0,
      "exclusiveMinimum": 0
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "burned_tokens": 100000,
     "issued_tokens": 2000000
    },
    {
     "burned_tokens": 110000.00000000001,
     "issued_tokens": 2200000
    },
    {
     "burned_tokens": 100000,
     "issued_tokens": 2000000
    },
    {
     "burned_tokens": 110000.00000000001,
     "issued_tokens": 2200000
    }
   ],
   "maxItems": 200,
   "minItems": 2
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/burned-token-fraction-adjacent-period-changes-1c7abf70/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)