# Token Assessment Evidence Coverage — Local Finite-Change Elasticity

> Token Assessment Evidence Coverage — 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 2026-10-12).

Computes local finite-change elasticity for token assessment evidence coverage given observed vs requested field counts and a step size

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-token-evidence-coverage-elasticity?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/token-assessment-evidence-coverage-local-finite-change-elasticity-6fe94c59
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Cm7lf84LuVIvQCQ5sqY7t

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-assessment-evidence-coverage-local-finite-change-elasticity-6fe94c59 -d '<json body>'
```

Example prompt: Calculate the local finite-change elasticity for my token assessment evidence coverage — I have 8 observed fields out of 10 requested fields, using a 1% step size on the observed_fields dimension.

## When to prefer this

Choose this endpoint when you need a fast, deterministic, single-point sensitivity (elasticity) calculation for a token evidence coverage ratio — specifically the local finite-change variant. Prefer this over a scenario grid or distribution summary when you want a point estimate at a known baseline with a precise step perturbation, not a sweep across many parameter combinations.

## Known failure modes

- requested_fields must be greater than 0 (exclusiveMinimum), otherwise validation error
- step_percent outside range [0.01, 10] will be rejected
- Missing or malformed baseline object returns a 400-level error
- Extremely large field values (approaching 1e16 boundary) may produce numeric precision edge cases
- Payment failure or insufficient USDC balance prevents call execution

## How this service works

Token assessment evidence coverage — Local finite-change elasticity: Local finite-change elasticity for Token assessment evidence coverage. 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

Returns a deterministic local finite-change elasticity value for the token assessment evidence coverage metric at the specified baseline (observed vs requested fields) and step size, along with an optional threshold-based verdict. The report is bounded and based solely on the supplied inputs — no live scanning or external data.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "field": {
   "enum": [
    "observed_fields",
    "requested_fields"
   ],
   "type": "string",
   "default": "observed_fields"
  },
  "baseline": {
   "type": "object",
   "default": {
    "observed_fields": 8,
    "requested_fields": 10
   },
   "required": [
    "observed_fields",
    "requested_fields"
   ],
   "properties": {
    "observed_fields": {
     "type": "number",
     "default": 8,
     "maximum": 10000000000000000,
     "minimum": 0
    },
    "requested_fields": {
     "type": "number",
     "default": 10,
     "maximum": 10000000000000000,
     "minimum": 0,
     "exclusiveMinimum": 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-assessment-evidence-coverage-local-finite-change-elasticity-6fe94c59/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)