Wren Coffee bronze

Find in the catalogue

What Wren Coffee sells: every offer, its price, what it delivers, what it asks for, and how it is paid. Ask in words, or send a data part {action: "search_catalog", catalog: {query}}; {action: "lookup_catalog", catalog: {ids}} and {action: "get_product", catalog: {id}} read one or more offers by id. The answer is a message: the products as UCP's catalogue writes them, in a data part, and in words.

• What do you sell?
• Tell me about House roast, 1 lb.

Read the terms

The seller's terms (https://wren-coffee.integraledger.com/terms.md) and each offer's terms word for word, with the SHA-256 of their RFC 8785 form, which every agreement names. Send {action: "get_terms", offer?}, or ask in words.

• What are your terms?

Negotiate a price

Negotiate an offer's price with the seller's agent, for an offer whose price is open to negotiation (its catalogue entry says so). Send {action: "negotiate", offer, amount: "7.50", text, negotiation?}: the amount you propose in dollars and cents, your words, and, to continue, the negotiation you were given. An accepted price stands for 10 minutes, for one purchase: name the negotiation as quote when you buy. In words, one conversation (its contextId) continues its negotiation, and a purchase asked for in it is made at the price agreed there.

• I would pay 16.00 for House roast, 1 lb.

Buy an offer

x402 version 2 over A2A (https://github.com/google-agentic-commerce/a2a-x402/blob/main/spec/v0.2). Send a data part {offer, network?, quote?, with?}: network names the network the checkout is paid on, as a CAIP-2 id (without it, eip155:84532); with holds what the offer asks for, and is written into the agreement, which is public. The task answers TASK_STATE_INPUT_REQUIRED (v0.3: input-required) with the x402 PaymentRequired in its status message's metadata ("x402.payment.required"), and the agreement's hash and address in the task's metadata under https://lcp.integraledger.com/a2a/legal-context/v1; the payment carries that hash. Fetch the address, hash its bytes with SHA-256 and compare before you sign. Then send the PaymentPayload in a second message on the same taskId, with metadata {"x402.payment.status": "payment-submitted", "x402.payment.payload": …}. The task completes with the delivery and the proof's address in its artifact "purchase", and the settle answer in "x402.payment.receipts". Paid in test U

• Buy House roast, 1 lb.

Wren Coffee, over MCP

Wren Coffee's MCP server, https://wren-coffee.integraledger.com/mcp: its catalogue, terms, negotiation and x402 over MCP, and UCP's checkout. For demonstration only. This transaction runs on a test network with test money, and has no value.

Wren Coffee, over A2A

Wren Coffee's A2A agent, https://wren-coffee.integraledger.com/a2a, versions 0.3 and 1.0: find, read the terms, negotiate and buy, paid by x402 over A2A. For demonstration only. This transaction runs on a test network with test money, and has no value.

Wren Coffee's HTTP API

Every door over HTTP, with what each asks to be paid: x402, MPP and UCP's checkout (OpenAPI 3.1). For demonstration only. This transaction runs on a test network with test money, and has no value.

How to buy from Wren Coffee

The Agent Skills index: one skill, buy-from-wren-coffee, how to buy from this shop. For demonstration only. This transaction runs on a test network with test money, and has no value.

Wren Coffee's llms.txt

Every door, the offers and how each is paid, in prose for an agent. For demonstration only. This transaction runs on a test network with test money, and has no value.