# Token Assessment Evidence Coverage Distribution Histogram

> Token Assessment Evidence Coverage Distribution Histogram 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).

Generates a distribution histogram (with configurable bins) summarizing evidence coverage ratios across multiple token assessment observations.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-token-evidence-coverage-histogram?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-distribution-histogram-a53b6353
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6Vbfym5hSz3xZ0Mgr0O6R

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-distribution-histogram-a53b6353 -d '<json body>'
```

Example prompt: I have 6 token observations with observed and requested field counts — can you generate a distribution histogram with 10 bins showing how the evidence coverage is spread across those records? Observations: (8,10), (9,11), (7,10), (8.5,10), (6,10), (9.5,11).

## When to prefer this

Use this endpoint when you need a deterministic, histogram-based statistical summary of token assessment evidence coverage across multiple observations (2–200 rows). Prefer this over a single-calculation or summary-statistics endpoint when you want to understand the shape and spread of coverage ratios — e.g. whether most tokens cluster near full coverage or are widely dispersed. Choose this over live scanning tools when you already have the field-count data and need a reproducible, cost-efficient ($0.01) distributional view without any trading or safety signal.

## Known failure modes

- Fewer than 2 rows provided — minimum of 2 observation rows required
- requested_fields set to 0 (exclusiveMinimum enforced) — will cause validation error
- bins value outside 1–30 range — rejected by schema
- observed_fields or requested_fields exceed the maximum allowed value
- Malformed row objects missing required fields — additionalProperties:false enforced
- Payment of 0.01 USDC not supplied or rejected — endpoint requires x402 payment

## How this service works

Token assessment evidence coverage — Distribution histogram: Distribution histogram 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 distribution histogram report.

## Output

A bounded distribution histogram report showing how evidence coverage ratios (observed_fields / requested_fields) are distributed across the submitted token observations, segmented into the specified number of bins, with frequency or count per bin. The result is deterministic given the same inputs and does not represent a live scan, safety proof, or trade recommendation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "bins": {
   "type": "integer",
   "default": 5,
   "maximum": 30,
   "minimum": 1
  },
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "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
   },
   "default": [
    {
     "observed_fields": 8,
     "requested_fields": 10
    },
    {
     "observed_fields": 8.8,
     "requested_fields": 11
    },
    {
     "observed_fields": 8,
     "requested_fields": 10
    },
    {
     "observed_fields": 8.8,
     "requested_fields": 11
    }
   ],
   "maxItems": 200,
   "minItems": 2
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/token-assessment-evidence-coverage-distribution-histogram-a53b6353/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)