# 6.1 API Reference — Standard (PTERI) {% embed url="" %} LiaaS - Pteri Postman Documentation {% endembed %} This page contains the **standard PTERI API reference**, intended for: * Identity verification * Authentication * Signature verification * Payments via shared infrastructure All endpoints are: * Deterministic * Verification-only * Stateless where possible *** ### Notes on Security * API keys only grant access to verification APIs * Authority always comes from wallet signatures * No private keys are ever transmitted > If a signature is valid, the request succeeds.\ > If not, it fails — deterministically. *** --- # 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.kakrlabs.com/6.-api-reference/6.1-api-reference-standard-pteri.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.