{"uid":"cap_e9bL6ypSfP6Y1J5aC9ZnR","slug":"one-engine-pick-keys-5293ef56","name":"ONE Engine Pick-Keys","description":"Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.","url":"https://one-search.one-engine.workers.dev/v1/json/pick-keys?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"keys":{"type":"array"},"value":{"type":"object"}}},"responseSchema":{"type":"json","example":{"value":{"a":1,"c":3}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.0011","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.0011/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0011","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0011","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Hg9wQOKJuP4w1_1qruDJv","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.0011","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Filters a JSON object to only return the specified subset of keys, dropping all others.","exampleAgentPrompt":"From this object {\"a\":1,\"b\":2,\"c\":3,\"d\":4}, give me back only the keys 'a' and 'c' using the pick-keys utility.","exampleUseCases":[{"title":"Trim API response to essentials","prompt":"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?"},{"title":"Select user profile fields","prompt":"From this full user profile object, keep only 'name', 'email', and 'role' and drop everything else before I send it downstream."},{"title":"Filter config object for display","prompt":"I have a config object with dozens of keys but the UI only needs 'theme', 'language', and 'timezone' — can you pick just those three?"}],"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T12:44:30.869Z","isFirstParty":false,"canonicalSlug":"one-engine-pick-keys-5293ef56"}