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JSON Null Coalescer
x402
JSON Null Coalescer is a paid API for AI agents from kihustle.tech, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).
Replaces null or missing values in a JSON payload object with corresponding defaults from a provided defaults object
Price / call$0.002
Success—
StatusUnknown
How this service works
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Output
A processed JSON object where any null or missing fields in the input payload have been replaced with the corresponding values from the defaults object. Returns {result: 'processed', status: 'success'} along with the coalesced output object.
Example use cases
Sanitize incomplete API response data
“This API response has several null fields — can you coalesce those nulls using these defaults: {"country":"US","currency":"USD","language":"en"} so the downstream system gets valid values?”
Apply fallback config values
“I have a user settings payload where some preferences were never set so they're null — use these defaults to fill them in: {"theme":"light","notifications":true,"timezone":"UTC"}.”
Clean pipeline data before storage
“Before I store this record, I need any null fields replaced with safe defaults — my payload has several missing values and my defaults object covers all the required fields.”
Technical details
Endpoint
POSThttps://kihustle.tech/agents/api/v1/json-null-coalescerWhen to prefer
Use this endpoint when you need a lightweight, pay-per-call utility to perform null coalescing on a JSON object without setting up local transformation logic. Particularly useful in agent pipelines where API responses contain sporadic nulls and you need a clean, default-filled object before passing data to the next step.
Side effects
- Malformed payload or defaults objects may cause a 400 error
- If neither payload nor defaults is provided the endpoint may return an empty or error result
- Deeply nested null values may not be coalesced if the implementation is shallow-only
- Non-object input types may be rejected
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| payload | object | |
| defaults | object |
Output
Schema · Response
{
"type": "json",
"example": {
"result": "processed",
"status": "success"
}
}Tags
x402
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