{"uid":"cap_4YMg30h46Cyi9X9dvgDxq","slug":"text-checksum-hash-api-b83e942d","name":"Text Checksum & Hash API","description":"Global current weather, hourly forecasts, foreign-exchange rates, EVM reads, and deterministic utilities for AI agents. Pay per call with MPP or x402; no API key.","url":"https://agent-chain-kit-solana.vercel.app/v1/checksum?utm_source=zero.xyz","method":"POST","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","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","required":["text"],"properties":{"text":{"type":"string"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"md5":"5d41402abc4b2a76b9719d911017c592","bytes":5,"crc32":"3610a686","sha256":"2cf24dba5fb0a30e..."}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.0005","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":"$0.0005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_LcFjBKsLbT6pvQgcFpQlX","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.0005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes deterministic hash digests (MD5, CRC32, SHA-256) and byte count for a given text string","exampleAgentPrompt":"Can you compute the MD5, SHA-256, and CRC32 checksums for the text 'hello' so I can verify its integrity?","exampleUseCases":[{"title":"Integrity check before file upload","prompt":"Before I upload this config file, can you hash the text contents and give me the MD5 and SHA-256 so I can verify nothing changed after transfer? The text is: 'server_host=localhost port=8080 debug=false'"},{"title":"Fingerprint API response for caching","prompt":"I need a deterministic fingerprint for this JSON payload to use as a cache key — can you give me the SHA-256 and CRC32 of the string '{\"user\":\"alice\",\"role\":\"admin\"}'?"},{"title":"Verify downloaded content matches expected hash","prompt":"I downloaded a file and the vendor says the MD5 should be 5d41402abc4b2a76b9719d911017c592 — can you hash the text 'hello' and check if the MD5 matches that value?"}],"resultDescription":"Returns a JSON object containing the MD5 hex digest, SHA-256 hex digest, CRC32 checksum, and byte count of the input text string","failureModes":["Missing required 'text' query parameter returns validation error","Unsupported HTTP method (POST/PUT) rejected with 422","Empty string input may return zero-byte result","Payment failure (x402) blocks request if USDC balance is insufficient"],"whenToPreferThis":"Choose this endpoint when you need multiple hash formats (MD5, SHA-256, CRC32) returned in a single call without managing API keys, paying per-call via micropayment protocol (x402/MPP). Useful for lightweight integrity checks in agent workflows where a traditional SDK or heavy library is impractical.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-09T18:48:36.628Z","isFirstParty":false,"canonicalSlug":"text-checksum-hash-api-b83e942d"}