PromptLayer REST API

REST discovered

Details

URL: https://api.promptlayer.com
Docs: https://docs.promptlayer.com/reference/introduction

Authentication

PromptLayer API key api_key discovered Get key ↗

X-API-Key: <credential>

Sign in to the PromptLayer dashboard, open the API keys page mentioned in the REST API authentication docs, and generate a workspace API key. The quickstart notes you need a PromptLayer API key from your workspace; set it as PROMPTLAYER_API_KEY for SDKs and local MCP, use it in X-API-Key for the REST API, or as Authorization: Bearer pl_... for the hosted MCP server.