# Polymer Measurements - Required Field Coverage

> Polymer Measurements - Required Field Coverage is a paid API for AI agents from www.mahastrategies.com, paid per call via x402, $0.010135/call, status unknown (last checked 2026-10-16).

Checks whether required fields (dataset, method, revision, content pins) are present across polymer lot measurement records, reporting null as missing rather than invalid.

## Facts

- Endpoint: POST https://www.mahastrategies.com/api/v1/compute/polymer-measurements/required-field-coverage?utm_source=zero.xyz
- Price: $0.010135/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/polymer-measurements-required-field-coverage-43ed4df9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_D2FDjvpeIc1fL55QWffe2

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 polymer-measurements-required-field-coverage-43ed4df9 -d '<json body>'
```

Example prompt: Check these 10 polymer lot measurement records to see if all the required fields — dataset, method, revision, and content pins — are present; the data is synthetic and nonpersonal, so flag anything that's null as missing.

## When to prefer this

Use this endpoint when you need to audit polymer lot or scientific measurement records for required-field completeness — specifically checking whether dataset, method, revision, or content pins are present or null — before ingestion, submission, or further processing. Prefer this over generic validation tools when working with polymer measurement data in a materials science or lab pipeline context.

## Known failure modes

- Missing or empty 'rows' array — validation error returned
- 'rows' array exceeds 32 items — rejected with maxItems error
- 'requiredFields' array exceeds 8 items — rejected
- 'dataClass' value not in enum ['public','synthetic'] — invalid input
- 'nonpersonalMetadata' not set to true (const constraint) — rejected
- Malformed row objects with unexpected schema — may produce incomplete coverage results

## How this service works

Check presence of required scientific dataset/method/revision/content pins; null is missing, not an invalid credential or artifact for polymer lot/method-pinned measurement Supplied-record analysis, not independent certification. Full contract at the free describe URL.

## Output

A report indicating, for each required field across the supplied rows, whether that field is present or null (missing), enabling callers to identify incomplete polymer measurement records before further processing. Null indicates a missing value, not an invalid credential or artifact.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "array",
   "maxItems": 32,
   "minItems": 1
  },
  "dataClass": {
   "enum": [
    "public",
    "synthetic"
   ],
   "type": "string"
  },
  "requiredFields": {
   "type": "array",
   "maxItems": 8,
   "minItems": 1
  },
  "nonpersonalMetadata": {
   "type": "boolean",
   "const": true
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/polymer-measurements-required-field-coverage-43ed4df9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from www.mahastrategies.com](https://www.zero.xyz/host/www.mahastrategies.com/llms.txt)