WebMCP challenge

Wishlists your AI agent can actually use.

Two sides. Gift givers: an in-browser agent inspects what is still available, reserves without duplicates, and drafts the WhatsApp. Wishlist owners: your agent already knows you, creates your account with your confirmation, and fills a starter list.

Open demo list Create a list with an agent Remote MCP / OpenAPI

Gift givers, on a public list

get_wishlist — owner, public URL, and visible gifts (hidden gifts stay hidden).
get_available_gifts — only status=available, optional max_budget, currency, and priority.
get_contribution_options — group gifts with target, pledged, remaining, and suggested amounts. Use when you can only pledge $500.
reserve_gift — gift_id + reserved_by. If someone already reserved it, structured conflict; no overwrite.
pledge_contribution — gift_id + name + amount. A pledge, not a payment. Structured conflict if it exceeds remaining.
draft_group_message — deterministic WhatsApp text. No LLM call.
draft_contribution_message — WhatsApp copy to coordinate the shared gift. Does not send the message.

Tools register only when document.modelContext.registerTool exists. Without WebMCP the human page stays the same: view the list and tap “I’ll take this”.

Wishlist owners, with their agent

On /register an agent can read requirements, check a username, prepare a draft, and submit signup only after you confirm. QueRegalar emails a verification link before the account is fully yours.

Once verified, on /app the agent proposes ideas, saves drafts, and publishes only what you approve. The remote token (OpenAPI / MCP) still exists; WebMCP never puts it in public JavaScript.

get_signup_requirements · check_username_availability · create_account_draft · submit_account_signup
get_wishlist_builder_requirements · suggest_gift_ideas · create_gift_drafts · publish_gift_drafts · create_gift

Already agent-operable outside the browser

Owners still connect remote agents with a per-user token:

/agents.txt · /openapi.json · remote MCP /mcp

WebMCP is the live page. Remote MCP is for managing your list from another app.

Try the giver demo

Open the demo list in a WebMCP-capable browser (ChatGPT desktop built-in browser). https://queregalar.me/u/ana
Ask: “Find a good gift under $800 MXN that is still available.”
Then: “Reserve it under my name and draft a WhatsApp message for our group.”
Refresh: the gift should show as reserved.
Also try: “Find a meaningful gift I can help with for Ana, but I only want to spend $500 MXN.”
The agent should recommend contributing to the Sony headphones, pledge $500, and draft WhatsApp copy.

Second demo: owner creates a wishlist with an agent

Open /en/register (or /es/register).
Ask your agent to create your wishlist account with your name and email. It must show a draft and wait for confirmation.
Confirm the email (link or on-page button).
On /app ask for 8 ideas as drafts. Review, publish, share the link.