{"uid":"cap_jQx1sWNBKwXdsj3di1DY4","slug":"kevaremesh-cryptographic-hash-api-2759798a","name":"KEVAREMESH Cryptographic Hash API","description":"Buyer-first MCP procurement gateway that discovers, compares and routes live x402 APIs without making the buyer choose a provider.","url":"https://kevaremesh-web.vercel.app/api/x402/cryptographic-hash-cdp-cryptographic-hash?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"text":{"type":"string","maxLength":262144},"algorithm":{"enum":["sha256","sha384","sha512"],"type":"string","default":"sha256"}}},"responseSchema":{"type":"json","example":{"result":{"hex":"ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad","bytes":3,"algorithm":"sha256"},"product":"kevaremesh_cryptographic_hash_cdp_cryptographic_hash_v2","service":"KEVAREMESH","tool_name":"kevaremesh_hash","limitations":["UTF-8 text input","Maximum input 256 KiB"],"generated_at":"2026-09-18T00:00:00.000Z"}},"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_NOYzw9OUJ0udyZRGVIpQz","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":"Computes a SHA-256, SHA-384, or SHA-512 cryptographic hash of a given UTF-8 text string and returns the hex digest","exampleAgentPrompt":"Can you compute the SHA-256 hash of the text 'Hello, world!' and give me the hex digest?","exampleUseCases":[{"title":"Data integrity fingerprinting","prompt":"Hash this JSON blob with SHA-256 so I can store a fingerprint and detect if it changes later: '{\"user\":\"alice\",\"balance\":1000}'"},{"title":"Content deduplication check","prompt":"Give me the SHA-512 hex digest of this article text so I can check whether I've already indexed it: 'The quick brown fox jumps over the lazy dog.'"},{"title":"Secure token generation verification","prompt":"I need to verify a commitment — can you compute the SHA-384 hash of the string 'nonce:abc123:payload:transfer-1000' so I can compare it against an expected digest?"}],"resultDescription":"Returns a JSON object containing the hex-encoded hash digest, the byte length of the input, and the algorithm used (sha256, sha384, or sha512), along with service metadata including product name, tool name, limitations, and generation timestamp.","failureModes":["Input text exceeds 256 KiB maximum — returns error indicating size limit","Invalid algorithm value (not sha256, sha384, or sha512) — returns validation error","Non-UTF-8 or binary input — not supported, returns error","Empty text input — may return hash of empty string or validation error","Payment failure via x402 — returns 402 Payment Required before processing"],"whenToPreferThis":"Choose this endpoint when you need a quick, paid, on-demand cryptographic hash of a text string (up to 256 KiB) without running local crypto libraries — particularly useful for AI agents operating in sandboxed environments without native crypto access. Prefer this over local hashing when you need a verifiable, auditable, paid computation trail via x402. Best for SHA-256/384/512 of UTF-8 text; not suitable for binary data, file hashing, or HMAC operations.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T00:35:10.418Z","isFirstParty":false,"canonicalSlug":"kevaremesh-cryptographic-hash-api-2759798a"}