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CRC16-CCITT Checksum (Hex) Calculator
x402
CRC16-CCITT Checksum (Hex) Calculator is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-02).
Computes the CRC16-CCITT checksum of input text and returns it as a hexadecimal string, with no network or LLM involvement.
Price / call$0.003
Success—
StatusUnknown
How this service works
Call when an agent needs a crc16-ccitt checksum of text as hex. No network and no LLM. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/checksum-crc16-ccitt-hex first.
Output
Returns the CRC16-CCITT checksum of the provided text as a hexadecimal string (e.g. '29B1'). The computation is fully deterministic, requires no external network calls, and produces no side effects.
Example use cases
Firmware update integrity check
“Calculate the CRC16-CCITT hex checksum for this firmware payload string so I can verify it hasn't been corrupted in transit: 'BOOT_v2.3.1_aarch64_checksum_block'.”
Protocol frame validation
“I need the CRC16-CCITT checksum as a hex value for the message 'AT+CMD=READ,REG=0x0A' to append to my serial protocol frame.”
Data pipeline deduplication
“Give me the CRC16-CCITT hex checksum for 'user_id=8421&event=purchase&ts=1714900000' so I can use it as a fingerprint to deduplicate events in my pipeline.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/checksum-crc16-ccitt-hex?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, deterministic CRC16-CCITT hex checksum for data integrity verification, protocol framing, or deduplication, and you want a hosted computation with no dependencies on LLMs or external networks. Prefer the free sandbox endpoint (/v1/sandbox/checksum-crc16-ccitt-hex) for testing; use this paid endpoint for production workloads.
Side effects
- Empty or missing text field returns a validation error
- Text exceeding 100,000 characters is rejected
- Invalid or missing API key returns an authentication error
- Malformed request body returns a 400 Bad Request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| key | string | HMAC secret. Required on HMAC SKUs. Omit it for plain digests and checksums. The key is not stored. |
| text | string | 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. |
Tags
x402
Reviews
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