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ONE Engine Pick-Keys
x402
ONE Engine Pick-Keys is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0011/call, status unknown (last checked 2026-10-02).
Filters a JSON object to only return the specified subset of keys, dropping all others.
Price / call$0.0011
Success—
StatusUnknown
How this service works
Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.
Output
A JSON object containing only the key-value pairs whose keys were specified in the 'keys' input array, with all other properties from the original object omitted.
Example use cases
Trim API response to essentials
“I got a huge JSON object back from a weather API and I only need the 'temperature', 'humidity', and 'wind_speed' fields — can you strip everything else out?”
Select user profile fields
“From this full user profile object, keep only 'name', 'email', and 'role' and drop everything else before I send it downstream.”
Filter config object for display
“I have a config object with dozens of keys but the UI only needs 'theme', 'language', and 'timezone' — can you pick just those three?”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v1/json/pick-keys?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a cheap, stateless, pay-per-call operation to filter a JSON object to a specific set of keys within an autonomous agent workflow — especially when you want to avoid spinning up local computation or when operating in a serverless/agent context using x402 micropayments on Base.
Side effects
- If a requested key does not exist in the input object, it will be silently omitted from the result (no error thrown)
- Malformed input (non-object 'value' or non-array 'keys') may return an error or empty result
- Payment failure via x402 will prevent the call from completing
- Empty 'keys' array may return an empty object
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| keys | array | |
| value | object |
Output
Schema · Response
{
"type": "json",
"example": {
"value": {
"a": 1,
"c": 3
}
}
}Tags
x402
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