{"uid":"cap_L-eW1RZFgxN5zt1Fg9rVD","slug":"x402-zoo-checksum-hash-calculator-44bdf55a","name":"x402-zoo Checksum & Hash Calculator","description":"Calculate SHA-family hashes or an FNV-1a checksum for caller-supplied text.","url":"https://x402-zoo.lolagent.workers.dev/api/checksum","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["text"],"properties":{"text":{"type":"string"},"algorithm":{"type":"string"}}}},"additionalProperties":false}}},"responseSchema":null,"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_hbILrauNx5tLhJyZOnAK7","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 SHA-family (e.g. SHA-256, SHA-512) or FNV-1a checksums for any caller-supplied text string.","exampleAgentPrompt":"Can you calculate the SHA-256 hash of the text 'Hello, world!' for me?","exampleUseCases":[{"title":"Data integrity fingerprinting","prompt":"Hash the string 'user:alice|role:admin|ts:1718000000' using SHA-256 so I can compare it later to detect any tampering."},{"title":"Quick FNV-1a checksum for cache key","prompt":"Give me the FNV-1a checksum of the text 'product_id=42&color=blue' — I need a fast non-crypto hash for a cache lookup key."},{"title":"Verify known hash matches input","prompt":"Compute a SHA-512 digest of 'The quick brown fox jumps over the lazy dog' so I can confirm it matches the expected value in my test suite."}],"resultDescription":"Returns the computed hash or checksum digest as a hex string (or equivalent encoding), along with the algorithm used and the original input text, so the caller can confirm correctness and use the digest for integrity checks or fingerprinting.","failureModes":["Missing 'text' query parameter returns a 400 or error response","Unsupported algorithm name returns an error indicating valid options","Very long input strings may be truncated or rejected","Payment failure (x402) prevents the request from being processed"],"whenToPreferThis":"Choose this endpoint when you need a quick, serverless hash or checksum computation without standing up your own crypto library — especially useful in low-code agent workflows, test pipelines, or environments where calling a lightweight paid micro-API is simpler than importing a hashing dependency. Prefer it for SHA-family digests or FNV-1a specifically; for HMAC or bcrypt, look elsewhere.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T13:03:20.140Z","isFirstParty":false}