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Delx Null Distribution
x402
Delx Null Distribution is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).
Measures the distribution of null and missing fields across an array of JSON records, returning per-field null counts and rates.
Price / call$0.003
Success—
StatusUnknown
How this service works
Measure null and missing-field distribution across JSON records. Use it as a bounded preflight or analysis step inside an enterprise agent workflow before data, policy, integration, security, or commercial decisions reach production. Returns deterministic machine-readable JSON for $0.003 USDC via x402 on Base. Execution is first-party, local-only, stateless, memory-only, and has no paid upstream or input retention. Results are advisory; the caller remains responsible for authorization and produ…
Output
A machine-readable JSON object containing per-field null counts, null rates (as fractions or percentages), total record count, and a summary of field coverage across the submitted records array. Results are deterministic and stateless.
Example use cases
ETL preflight data quality check
“Before we load these 500 order records into the warehouse, can you scan them for null and missing fields so I know which columns are unreliable?”
API response completeness audit
“I'm getting inconsistent responses from our vendor API — can you profile these JSON payloads and show me the null distribution across all fields so I know what's missing?”
Policy decision data readiness gate
“We need to run a fraud policy decision on these applicant records — first check the null distribution so we can flag any records with too many missing fields before they hit the model.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/null-distributionWhen to prefer
Choose this endpoint when you need a fast, stateless, deterministic null-field profile of a bounded set of JSON records as a preflight step before downstream data processing, policy evaluation, or integration workflows. Prefer it over custom code when you need a consistent machine-readable output with per-field null rates at low cost ($0.003 USDC) without retaining input data.
Side effects
- Empty records array returns zero-count distribution or validation error
- Malformed JSON input returns a parsing error
- Non-object array elements may cause field extraction to fail or return partial results
- Very large record arrays may hit payload size limits
- Missing required 'records' field returns a schema validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| records | array | Input field: records. |
Output
Schema · Response
{
"type": "json",
"example": {
"fields": {
"id": {
"percent": 0,
"null_or_missing": 0
},
"score": {
"percent": 50,
"null_or_missing": 1
}
},
"schema": "delx/util-null-distribution/v1",
"record_count": 2
}
}Tags
x402
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