LendingTree API
LendingTree runs a partner-gated developer platform, not a public API. Endpoint docs sit behind a partner login at docs.lendingtree.com and require a signed agreement. Integration surfaces include server-to-server lead delivery, a JS SDK on npm, and Salesforce and LeadConduit connectors.
Frequently asked questions
LendingTree scores B+ on the API Report Card. LendingTree runs a partner-gated developer platform, not a public API. Endpoint docs sit behind a partner login at docs.lendingtree.com and require a signed agreement. Integration surfaces include server-to-server lead delivery, a JS SDK on npm, and Salesforce and LeadConduit connectors.
LendingTree has a workable official integration path. Most engineering teams can build against it directly. Solid API with minor gaps
LendingTree, Inc. (NASDAQ: TREE) is a Charlotte, NC-headquartered online loan and financial-services marketplace founded in 1996 by Doug Lebda and publicly traded on Nasdaq under ticker TREE.
Vertical: Financial Services (online loan and insurance marketplace / lead generation). Consumer arrives via Google search ('mortgage rates,' 'refinance my home,' 'personal loan bad credit,' 'cheap auto insurance'), TV/streaming advertising, or direct.
LendingTree is one of the most recognized consumer-finance brands in the U.S. alongside Bankrate (Red Ventures), NerdWallet, Credit Karma (Intuit), and Rocket Mortgage.
Mixed and lead-/marketplace-centric. LendingTree does not hold the bound product of record (loans live with the originating lender, deposits with the partner bank, insurance policies with the carrier).
Founded in 1996 by Doug Lebda, ~30 years old as of 2026. One of the original dot-com-era online lending marketplaces. Acquired by IAC/InterActiveCorp in 2003, spun out as Tree.com in 2008, rebranded to LendingTree, Inc. in 2015.
docs.lendingtree.com developer portal exists but the substantive documentation (endpoints, auth, payloads, webhooks) is password-protected; non-partners cannot evaluate the API surface without first signing a partner agreement. APITracker.io lists LendingTree's API profile with no description, no documented authentication, no webhook info, no public sandbox, no OpenAPI/Swagger, and no SDK metadata populated, confirming there is no fully public developer surface. Full sourced list under Sources below.
Common alternatives include Bankrate (Red Ventures), NerdWallet (NASDAQ: NRDS), Credit Karma (Intuit), Rocket Mortgage, Zillow Home Loans / Zillow, Realtor.com / Move. Graded alternatives appear under "More from the report card" below.
Grades measure one thing: can a customer's engineering team get their own data out programmatically? We check six things (whether a real API exists, how access is gated, data coverage, auth quality, docs and developer experience, and stability) and roll them into a letter grade. Grades get re-verified, and they only move on evidence.