Skip to main content

Documentation Index

Fetch the complete documentation index at: https://docs.lt.cryptoprocessing.com/llms.txt

Use this file to discover all available pages before exploring further.

400 Bad Request

Request body is invalid JSON

Error{"error":"Bad content format", "code":"bad_content_format"}
ProblemThe request body is malformed or invalid JSON. This can also happen when the Content-Type header is not set to application/json.
SolutionSend a valid JSON request body and set the Content-Type header to application/json.

403 Forbidden

Signature header does not match the request body

Error{"error":"Bad signature header", "code":"bad_header_signature"}
ProblemThe value in X-Processing-Signature was not generated from the exact request body that was sent.
SolutionGenerate the signature from the exact request body and include it in the X-Processing-Signature header. Do not modify the body after generating the signature. Refer to Authentication for more details.

Signature header is missing

Error{"error":"No signature header", "code":"required_header_signature"}
ProblemThe request does not include the required X-Processing-Signature header.
SolutionAdd the X-Processing-Signature header with an HMAC-SHA512 signature of the request body.

API key header does not match your API key

Error{"error":"Bad key header", "code":"bad_header_key"}
ProblemThe value in the X-Processing-Key header does not match your API key.
SolutionUse the correct API key in the X-Processing-Key header. Do not use your secret key here; the secret key is only used to generate and verify signatures. Refer to Get your API key for more details.

API key header is missing

Error{"error":"No key header", "code":"required_header_key"}
ProblemThe request does not include the required X-Processing-Key header. This error can also occur when the request URL is invalid.
SolutionAdd the X-Processing-Key header and make sure the request URL is correct.
Last modified on May 7, 2026