# Signing API requests The Finqware API v1 has two base endpoints: * - protected by TLS & API keys * - extra security: message signing & anti-tampering In order to use the `v1s` endpoints, an external API consumer is required to sign a short-lived JWT with each API call and include the JWS inside an Authorization header. The signed JWT payload will include a digest (sha256) of the request, for anti-tampering protection. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.finqware.com/dev-guide/signing-api-requests.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.