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 2026-10-10).

Merges a JSON payload object with a defaults object, returning non-null/undefined values from payload or falling back to defaults

Price / call$0.002

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StatusUnknown

How this service works

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Output

Returns a JSON object with the result of coalescing the input payload with the defaults object — each field in the output will use the payload value if it is non-null/non-undefined, otherwise the corresponding value from the defaults object. The response includes a 'result' field with the merged object and a 'status' field indicating success.

Example use cases

Fill partial form data with defaults

“I have a user-submitted form that came back with several null fields, and I have a defaults object with sensible fallbacks for each field — can you coalesce them so I get a fully-populated record?”

Resolve missing API response fields

“My upstream API sometimes returns null for optional fields like 'currency', 'locale', and 'timezone' — I have defaults for all of them, can you merge the response with the defaults so nulls get replaced?”

Normalize pipeline config with base settings

“I'm building an automation pipeline and my user config object has a bunch of undefined keys — I want to merge it with my base config object so that any missing or null values fall back to the base settings.”

Technical details

Endpoint

POSThttps://kihustle.tech/nexus/api/v1/json-null-coalescer?utm_source=zero.xyz

When to prefer

Use this endpoint when you need a lightweight, stateless null-coalescing utility that merges two JSON objects — ideal for filling in missing or null fields in API responses, user configs, or partial data payloads before passing them downstream. Prefer this over writing custom merge logic when you need a simple hosted fallback-resolution step in an agentic pipeline.

Side effects

Missing or malformed payload/defaults — may return an error or unexpected output if neither field is provided
Type mismatch between payload values and defaults (e.g. array vs object) may cause undefined behavior
Empty body request with no payload or defaults may return a generic error
Rate-limit or payment failure due to x402 micropayment not being processed correctly

Input

Schema · Request body

Field	Type	Description
payload	object
defaults	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "result": "processed",
    "status": "success"
  }
}

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