# Token Quote vs Received Amount — Local Finite-Change Elasticity

> Token Quote vs Received Amount — Local Finite-Change Elasticity 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).

Calculates the local finite-change elasticity between a token quote amount and the received amount, measuring how sensitive the shortfall ratio is to small percentage changes in one of those values.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-token-quote-shortfall-elasticity?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-quote-vs-received-amount-local-finite-change-elasticity-9e2a4343
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_USrwHhH-K8_6Oe7DcAMve

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-quote-vs-received-amount-local-finite-change-elasticity-9e2a4343 -d '<json body>'
```

Example prompt: What's the local finite-change elasticity of my token shortfall if my baseline is 1000 quoted tokens versus 980 received, using a 1% step on the quoted_tokens field?

## When to prefer this

Choose this endpoint when you need a precise, deterministic, bounded elasticity measurement between a token quote and the amount actually received — particularly for post-trade analysis, sensitivity calibration, or threshold-setting in automated trading workflows. It is not a live scanner or safety auditor, so prefer it for offline or analytical computation rather than real-time pre-trade decisions.

## Known failure modes

- received_tokens set to zero or negative — violates minimum constraint
- step_percent outside 0.01–10 range — rejected by schema validation
- baseline quoted_tokens set to zero — excluded by exclusiveMinimum
- missing or malformed baseline object — returns validation error
- quoted_tokens and received_tokens values exceeding 10^16 — out of range

## How this service works

Token quote versus received amount — Local finite-change elasticity: Local finite-change elasticity for Token quote versus received amount. 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 local finite-change elasticity report.

## Output

A bounded local finite-change elasticity report for the specified field (quoted_tokens or received_tokens), showing how the token quote-to-received ratio responds to a small percentage step change at the given baseline. The output is a deterministic calculation result — not a live market scan or trade recommendation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "field": {
   "enum": [
    "quoted_tokens",
    "received_tokens"
   ],
   "type": "string",
   "default": "quoted_tokens"
  },
  "baseline": {
   "type": "object",
   "default": {
    "quoted_tokens": 1000,
    "received_tokens": 980
   },
   "required": [
    "quoted_tokens",
    "received_tokens"
   ],
   "properties": {
    "quoted_tokens": {
     "type": "number",
     "default": 1000,
     "maximum": 10000000000000000,
     "minimum": 0,
     "exclusiveMinimum": 0
    },
    "received_tokens": {
     "type": "number",
     "default": 980,
     "maximum": 10000000000000000,
     "minimum": 0
    }
   },
   "additionalProperties": false
  },
  "step_percent": {
   "type": "number",
   "default": 1,
   "maximum": 10,
   "minimum": 0.01
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/token-quote-vs-received-amount-local-finite-change-elasticity-9e2a4343/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)