Listing-creation stage — mint a pre-authorized link to the submit-property page (POST /api/mls/submit-property-link).

Call AFTER signing in (beycome_signin_verify). User-scoped — no prop_id exists yet. Returns a pre-authorized link (expires in 7 days) — this tool only hands back the URL; the listing is created in the browser, with no login step. Present the URL and tell the user that on the page they will:

1. fill out their property's information,

2. set a price,

3. choose a package and any add-ons,

4. pay. Tell them to return to the chat once payment is complete.

Prefill: the page accepts prefill params baked into the signed URL.

• list_address: the full property address. By this stage the user has already told Claude their address (discovery ran on it), so ALWAYS pass list_address so the page opens pre-filled.

• package: the page PRESET INDEX (1-4), not a payment reference — 1 = Basic $99 2 = Enhanced $399 3 = Concierge $999 4 = Basic + Title $199 WARNING: this is the page preset index, NOT an internal payPremiumOpt reference number. Passing a payPremiumOpt reference here is wrong. Only pass package if the user has clearly chosen a tier in chat; otherwise omit it and let them pick on the page.

Failure modes to relay plainly: 401 — bad/unverified token.

This page is THE way to create a listing — the property is created, priced, and paid for there; there is no in-chat alternative. After the user returns, call beycome_get_my_listings to recover the new prop_id, then beycome_questionnaire_link.