{"uid":"cap_M1LUg4J9CLuLGxsT5sLnb","slug":"crc16-hex-checksum-calculator-9e27356f","name":"CRC16 Hex Checksum Calculator","description":"Call when an agent needs a crc16 checksum of text as hex. No network and no LLM. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/checksum-crc16-hex first.","url":"https://agentshelf.syntexa.ch/v1/checksum-crc16-hex?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"key":{"type":"string","maxLength":512,"minLength":1,"description":"HMAC secret. Required on HMAC SKUs. Omit it for plain digests and checksums. The key is not stored."},"text":{"type":"string","examples":["hello"],"maxLength":100000,"minLength":1,"description":"Message to digest. For raw-hex SKUs this is hex bytes; for utf16 or latin1 SKUs it is decoded with that encoding. Otherwise it is UTF-8 text."}}},"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_MqVpGqtbMytvyjCcIC0t1","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 the CRC16 checksum of a given text string and returns the result as a hexadecimal value.","exampleAgentPrompt":"Can you compute the CRC16 checksum of the text 'Hello, World!' and give me the result as a hex string?","exampleUseCases":[{"title":"Protocol message integrity check","prompt":"I need to verify a CAN bus message frame — can you compute the CRC16 checksum of this payload: '01 03 00 00 00 0A' and give me the hex value?"},{"title":"Configuration file fingerprinting","prompt":"Give me the CRC16 hex checksum for this config snippet so I can detect any accidental changes later: 'server=localhost;port=5432;db=myapp'"},{"title":"Data pipeline deduplication","prompt":"Can you calculate the CRC16 hex value for the string 'user_id=4821&event=purchase&ts=1715000000' so I can use it as a lightweight dedup key in my pipeline?"}],"resultDescription":"Returns a hexadecimal string representing the CRC16 checksum of the submitted text, computed server-side without any LLM or network dependencies. The response is deterministic: identical inputs always produce the same hex output.","failureModes":["Empty or missing 'text' field returns a validation error","Text exceeding 100,000 characters is rejected","Missing or invalid API key returns 401/402 unauthorized","Malformed JSON body returns 400 bad request"],"whenToPreferThis":"Choose this endpoint when you need a fast, deterministic CRC16 hex checksum without implementing the algorithm locally. It is especially useful in agent workflows where you cannot or do not want to execute arbitrary code, and when you need a lightweight integrity fingerprint rather than a cryptographic hash. If cost is a concern, try the free sandbox POST /v1/sandbox/checksum-crc16-hex first.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T06:50:11.112Z","isFirstParty":false,"canonicalSlug":"crc16-hex-checksum-calculator-9e27356f"}