{"uid":"cap_l_3rAxFjvHGxflhFUOkxq","slug":"json-hash-fields-check-3f0ea974","name":"JSON Hash Fields Check","description":"JSON Hash Fields Check: JSON Hash Fields Check checks selected fields for caller-specified hexadecimal digest length from bounded caller-supplied values without an external provider. Call JSON Hash Fields Check before an agent hands structured data or a batch plan to a downstream tool with a stricter contract. Returns the bounded transformation or validation finding with counts, normalized values, and a versioned result contract for JSON Hash Fields Check as versioned deterministic JSON. Price:…","url":"https://api.delx.ai/api/v1/x402/json-hash-fields-check?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"fields":{"type":"array","items":{"type":"string","maxLength":8192},"maxItems":256,"description":"Fields supplied to JSON Hash Fields Check; used only for this bounded calculation and processed in memory without retention."},"object":{"type":"object","description":"Object supplied to JSON Hash Fields Check; used only for this bounded calculation and processed in memory without retention.","maxProperties":128,"additionalProperties":true},"hex_length":{"type":"integer","description":"Hex Length supplied to JSON Hash Fields Check; used only for this bounded calculation and processed in memory without retention."}}},"responseSchema":{"type":"json","example":{"result":{"passed":true,"invalid_fields":[]},"schema":"delx/util-json-hash-fields-check/v1","status":"pass","evidence":{"retained":false,"input_sha256":"b34b373467de4fd6c74125aa7caaaca2d8f0a53e73f08fb6d013e1409f387018","external_calls":0},"operation":"data_batch:json_hash_fields_check"}},"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_IMQ894kVuRYf5MUBVYB7D","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":"Hashes selected fields of a JSON object to a caller-specified hexadecimal digest length and returns counts, normalized values, and a versioned validation result.","exampleAgentPrompt":"Hash the fields 'user_id' and 'email' from this JSON object using a 16-character hex digest length: {\"user_id\": \"abc123\", \"email\": \"test@example.com\", \"role\": \"admin\"}.","exampleUseCases":[{"title":"Pre-flight data integrity check","prompt":"Before I send this batch plan JSON to the downstream processor, hash the fields 'order_id' and 'payload_hash' with a 32-character hex digest so I can verify integrity: {\"order_id\": \"ORD-9921\", \"payload_hash\": \"xyz\", \"amount\": 500}."},{"title":"Field-level deduplication fingerprint","prompt":"I need a 12-character hex fingerprint of just the 'email' and 'phone' fields from this customer record to use as a dedup key: {\"email\": \"jane@example.com\", \"phone\": \"555-1234\", \"name\": \"Jane Doe\"}."},{"title":"Contract validation before agent handoff","prompt":"Check and hash the 'transaction_id' and 'status' fields from this result object with a 64-character hex length before I hand it off to the settlement tool: {\"transaction_id\": \"TXN-0042\", \"status\": \"confirmed\", \"timestamp\": \"2024-01-15T10:00:00Z\"}."}],"resultDescription":"Returns a versioned deterministic JSON object containing the hex hash digests for the selected fields, field counts, normalized values, and a versioned result contract. All computation is done in-memory without data retention.","failureModes":["Invalid or missing 'fields' array returns a validation error","'hex_length' value out of acceptable bounds causes a rejection response","'object' exceeds maxProperties (128) limit causing a schema validation error","Fields specified in 'fields' array not present in 'object' may return null or missing hash entries","Malformed JSON in the object body results in a parse error"],"whenToPreferThis":"Use this endpoint when an agent needs to compute deterministic, bounded hex-length hashes of specific fields within a JSON object before passing structured data to a downstream tool with a strict contract. Prefer it over general-purpose hash utilities when you need versioned, normalized output with field counts in a single call without any external dependencies or data retention.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-22T04:20:36.480Z","isFirstParty":false,"canonicalSlug":"json-hash-fields-check-3f0ea974"}