# Automatic Vendor Detection

 - [POST /public/v1/avd/fourth-parties](https://docs.titanapi.securityscorecard.io/openapi.public/automatic-vendor-detection/getfourthparties.md): Lists vendor to fourth-party relationship rows for the caller's organization, with paging, sort, and filters.
 - [POST /public/v1/avd/fourth-parties/groups](https://docs.titanapi.securityscorecard.io/openapi.public/automatic-vendor-detection/getfourthpartygroups.md): Lists fourth parties grouped by domain, aggregating the portfolio vendors that connect to each, with paging, sort, and filters.
 - [POST /public/v1/avd/fourth-parties/vendors](https://docs.titanapi.securityscorecard.io/openapi.public/automatic-vendor-detection/getfourthpartyvendors.md): Lists the portfolio vendors that connect to the requested fourth party, with paging, sort, and filters.
 - [POST /public/v1/avd/vendors/summary](https://docs.titanapi.securityscorecard.io/openapi.public/automatic-vendor-detection/getvendorsummary.md): Returns fourth-party status and company-connection counts for a single vendor domain over an optional lookback window.