# Protein Measurements Required Field Coverage Check

> Protein Measurements Required Field Coverage Check is a paid API for AI agents from www.mahastrategies.com, paid per call via x402, $0.010125/call, status unknown (last checked 2026-10-16).

Checks whether required scientific fields (dataset, method, revision, content pins) are present in supplied protein/isoform/sequence measurement records, returning null for missing fields rather than flagging credential or artifact errors.

## Facts

- Endpoint: POST https://www.mahastrategies.com/api/v1/compute/protein-measurements/required-field-coverage?utm_source=zero.xyz
- Price: $0.010125/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/protein-measurements-required-field-coverage-check-fc0415f9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_MSLxrhIdDCMOorV49IuhV

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 protein-measurements-required-field-coverage-check-fc0415f9 -d '<json body>'
```

Example prompt: Check my 10 protein measurement rows for required field coverage — I need fields 'dataset', 'method', 'revision', and 'content_pin' to all be present; the data class is synthetic and nonpersonalMetadata is true.

## When to prefer this

Choose this endpoint when you need to programmatically verify that specific scientific field pins (dataset, method, revision, content) are present in protein, isoform, or sequence measurement records before downstream processing. It is purpose-built for null-detection on required field coverage rather than credential validation, schema transformation, or independent data certification. Prefer this over generic JSON validators when the domain is proteomics or scientific measurement and you need semantic null-versus-missing distinction.

## Known failure modes

- More than 32 rows supplied — request rejected due to maxItems constraint
- Fewer than 1 row supplied — minItems violation
- More than 8 required fields specified — maxItems constraint on requiredFields
- dataClass not one of 'public' or 'synthetic' — enum validation failure
- nonpersonalMetadata not exactly true — const constraint violation
- Malformed row objects — schema validation error
- Payment not included or insufficient — x402 payment required error

## How this service works

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

## Output

Returns a field-level coverage report for each supplied protein measurement row, indicating which required fields (dataset, method, revision, content pins) are present and which are null (missing). Null indicates absence, not an invalid credential or artifact. The response is an analysis of the supplied records only, not an independent certification.

## 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/protein-measurements-required-field-coverage-check-fc0415f9/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)