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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 2026-10-11).
Merges a JSON payload object with a defaults object, replacing null or missing values in the payload with corresponding values from defaults
Price / call$0.002
Success—
StatusUnknown
How this service works
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Output
A JSON object containing the merged result where every null or absent field from the input payload has been replaced with the corresponding value from the defaults object. The response includes a 'result' field with the coalesced object and a 'status' field indicating success.
Example use cases
Normalize sparse API response
“I'm getting API responses where some fields come back as null — can you merge this response object with my defaults so every field has a usable value? Here's the payload and here are the defaults I want applied.”
Apply config defaults to partial input
“I have a partial configuration object from the user that's missing several optional settings. Can you coalesce it with our standard defaults config so the result is a fully-populated config ready to use?”
Sanitize form submission nulls
“This form submission has several fields the user left blank, which came in as nulls. Merge it with our fallback values object so every field has at least a default before we save it.”
Technical details
Endpoint
POSThttps://kihustle.tech/api/v1/json-null-coalescer?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a lightweight, pay-per-call utility to coalesce null or missing fields in a JSON object with a set of defaults, without spinning up custom server-side logic. Prefer it over writing inline null-check code when operating inside an agent pipeline that already uses x402 micropayment infrastructure.
Side effects
- Malformed payload or defaults (not valid JSON objects) may cause a 400-level error
- If both payload and defaults are empty objects, result will be an empty object
- Deeply nested nulls may not be coalesced if only shallow merging is performed
- Network timeouts on slow connections
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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