# Provenance Manifests Missingness Co-occurrence Counter

> Provenance Manifests Missingness Co-occurrence Counter is a paid API for AI agents from www.mahastrategies.com, paid per call via x402, $0.020307/call, status unknown (last checked 2026-10-20).

Counts paired missing owner, revision, and content pins in caller-supplied artifact and dataset provenance manifests without silently treating absent values as matches

## Facts

- Endpoint: POST https://www.mahastrategies.com/api/v1/verify/provenance-manifests/missingness-cooccurrence?utm_source=zero.xyz
- Price: $0.020307/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/provenance-manifests-missingness-co-occurrence-counter-1ddd4079
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7ET0to55icr2x5BLJXoR2

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 provenance-manifests-missingness-co-occurrence-counter-1ddd4079 -d '<json body>'
```

Example prompt: Check these 12 provenance manifest rows for co-occurring missing fields — I need to know which pairs of owner, revision, and content pins are simultaneously absent, treating this as public non-personal metadata.

## When to prefer this

Choose this endpoint when you need to precisely count paired missing provenance pins (owner, revision, content) across manifest rows without any risk of false matches from absent values. It is best suited for offline, typed, non-personal metadata audits of artifact or dataset provenance — not for signature verification, source download, build reproduction, or scientific validity checks.

## Known failure modes

- Rows array empty or exceeds 32-item maximum — request rejected
- dataClass not set to 'public' or 'synthetic' — validation error
- nonpersonalMetadata not set to true (const) — request rejected
- Malformed row objects missing required provenance fields — parsing error
- Rate limit or payment failure via x402 protocol — 402 response

## How this service works

Count paired missing owner, revision and content pins without silently treating a missing value as a matching value for caller-supplied artifact and dataset provenance manifests. No source download, build reproduction, signature verification, proof of origin, causality or scientific validity. Offline typed nonpersonal metadata only. Result retention: 24 hours; minimal receipt metadata: 90 days.

## Output

Returns counts of co-occurring missing field pairs (owner, revision, content pins) across the submitted provenance manifest rows, without treating missing values as matching values. Results are retained for 24 hours; minimal receipt metadata is retained for 90 days. No source download, signature verification, or build reproduction is performed.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/provenance-manifests-missingness-co-occurrence-counter-1ddd4079/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)