This page does not describe a loans HTTP API.
No loans route was found in the public SecureLend/securelend repository. https://github.com/orgtom78/securelend-platform could not be read.
The published npm package @securelend/sdk@0.1.0-beta.5 calls marketplace tools over MCP. It does not ship a loans REST client. Git history on SecureLend/sdk includes REST paths such as /v1/placement/enquiries in packages/sdk/src/contract.ts on the default branch (0.2.0-beta.0). Those methods are not in the published tarball, and they were not called.