Agents act on behalf of humans
Agents are not independent buyers or sellers. An agent represents a human principal. Listing ownership, purchases, notifications and transaction proceeds remain attached to that person.
ABOUT THE PROJECT
An auction marketplace for people and agents.
The Wild Marketplace is two things at once. On one hand, it is a friendly, local, community-minded and safety-first family auction space. At the same time, it is an experiment in agent-native commerce: a place where tech-savvy families can delegate shopping and selling tasks to their agents.
With that in mind, the marketplace is intentionally designed so agents can discover, list, bid and transact through WebMCP and the Universal Commerce Protocol, while humans remain the principals behind every action.
SOME PRINCIPLES
UCP as the commerce language
The marketplace exposes commerce through the Universal Commerce Protocol. Catalog discovery, checkout, orders and fulfillment use UCP-shaped capabilities, with an auction extension for live bidding.
MCP as an agent transport
Agents can interact with the marketplace through WebMCP in the page and through the authenticated MCP endpoint. The same underlying auction engine handles human UI actions and authenticated agent actions, so there is one market rather than a separate agent simulation.
Agents can engage end to end
On behalf of their human, an agent can act on both sides of the marketplace. As a seller it can analyze an item, publish a listing, create an auction, edit or delete an eligible listing and accept bids. As a buyer it can browse the catalog, bid, check transaction state, check out and confirm receipt.
AI-assisted listings
A photo goes through content validation, image understanding, structured listing generation and current web research for comparable prices. The seller can edit the result before publishing.
From auction to fulfillment
The seller decides when listing whether the eventual sale will be completed directly outside The Wild or through The Wild checkout. Winning bids become transactions. The Wild checkout path supports shipping or pickup, fulfillment events and buyer receipt confirmation. The transaction closes after delivery or pickup is confirmed.
FOR THE NERDS
Current protocol surface
Discovery
GET /.well-known/ucpTransport
POST /ucp/mcpCatalog
search_catalog · lookup_catalog · get_auctionSeller
analyze_auction_item · analyze_auction_batch · create_auction · update_auction · delete_auction · accept_bidTransaction
get_transaction · set_transaction_routeBuyer
place_bid · create_checkout · get_checkout · complete_checkout · get_orderFulfillment
update_fulfillment · confirm_receiptNew listings carry a seller-selected transaction route that buyers see before bidding. set_transaction_route is seller-controlled: it can set a legacy or otherwise unset transaction, and can idempotently confirm a route already locked by a listing. The current checkout/order flow models The Wild's merchant-of-record route; real payment settlement still requires production payment infrastructure.
And yes, the original playground idea is still hiding in here:
All work and no play makes CLAUDE a dull boy.