{"uid":"cap_bmYoTvsoiFQ02MNv1fV3-","slug":"delx-commerce-json-array-project-keys-7ee4ae0f","name":"Delx Commerce — JSON Array Project Keys","description":"Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.","url":"https://commerce.delx.ai/api/v1/x402/json-array-project-keys?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"keys":{"type":"array","items":{"type":"string","maxLength":8192},"maxItems":256,"description":"Keys supplied to JSON Array Project Keys; used only for this bounded calculation and processed in memory without retention."},"items":{"type":"array","items":{"type":"object","maxProperties":128,"additionalProperties":true},"maxItems":256,"description":"Items supplied to JSON Array Project Keys; used only for this bounded calculation and processed in memory without retention."}}},"responseSchema":{"type":"json","example":{"result":{"keys":["id","name"],"items":[{"id":1,"name":"A"}]},"schema":"delx/util-json-array-project-keys/v1","status":"pass","evidence":{"retained":false,"input_sha256":"cf97ec299457d0d7e866c72dd379cccee1d633725ce65b3c091d637611c798a6","external_calls":0},"operation":"data_batch:json_array_project_keys"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_lJwosTcqLcVnjQcjuq7GY","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Projects (selects/filters) a specified set of keys from each object in a JSON array, returning only those key-value pairs.","exampleAgentPrompt":"From this array of user records, keep only the 'id', 'name', and 'email' fields and drop everything else — the array has up to 100 objects.","exampleUseCases":[{"title":"Slim API response before storage","prompt":"I got back a list of 80 product records from an external API but they have tons of extra fields I don't need — can you project each one down to just 'sku', 'price', and 'stock_count'?"},{"title":"Prepare display data for UI","prompt":"I have an array of 50 employee objects with sensitive fields — strip everything except 'name', 'department', and 'title' before I pass them to the frontend."},{"title":"Normalize heterogeneous records","prompt":"These 30 JSON objects all have different shapes — can you project them so each one only contains 'event_id', 'timestamp', and 'type', filling in what's present?"}],"resultDescription":"Returns a JSON object with: a 'result' containing the projected array (only the specified keys per object) and the list of keys used; a 'status' of 'pass'; an 'evidence' block with retained=false, the SHA-256 of the input for verifiability, and external_calls=0; and an 'operation' identifier 'data_batch:json_array_project_keys'.","failureModes":["Exceeding 256 items in the input array returns a validation error","Key strings longer than 8192 characters are rejected","More than 128 properties per object may be truncated or rejected","Malformed JSON input causes a 400-level error","Payment failure via x402 protocol prevents the call from executing"],"whenToPreferThis":"Choose this endpoint when you need a lightweight, pay-per-call, no-signup utility to project specific keys from a JSON array in-memory with cryptographic delivery proof (SHA-256 evidence). Ideal for agents that need deterministic field selection without spinning up custom ETL infrastructure, especially when operating in USDC/x402 payment environments on Base or Solana.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T00:53:38.930Z","isFirstParty":false,"canonicalSlug":"delx-commerce-json-array-project-keys-7ee4ae0f"}