U.CASH Pay
Pay x402 resources on U.CASH from your own wallet: view the price, pay on-chain, settle by hash.
| Endpoint | https://mcp.u.cash (streamable-http) |
|---|---|
| Registry version | 0.10.0 |
| Now | 14 tools · grade C (66) · pin ts_15bba977f88531f26f8704e749b787c1 · protocol 2025-06-18 |
| First / last listed | 2026-10-24 21:00 UTC / 2026-10-24 21:00 UTC |
| Grade over time | 2026-10-24: C (66), 14 tools |
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Tools: uxc_view_door uxc_verify_payment uxc_get_market uxc_get_services uxc_search_catalog uxc_get_product uxc_lookup_products uxc_create_checkout uxc_get_checkout uxc_complete_checkout uxc_cancel_checkout uxc_get_order uxc_discover_servers uxc_discover_tools
uxc_view_door | Fetch the public 402 payment door for a resource (what a buyer sees at https://agents.u.cash/r/{res_id}): the price + the multi-coin accepts[] (each asset, the seller receive address, and the exact amount to pay). No key. Use as a BUYER to see what to pay, then uxc_verify_payment after paying. status=true polls settlement without minting a new challenge. params: res_id*, status |
uxc_verify_payment | BUYER-SIDE. After paying a resource (from uxc_view_door) on-chain from your own wallet, submit the transaction hash to settle it. Pass the challengeId from the accepts[] entry you paid and the on-chain transaction hash. Returns settled (confirmed) or pending (awaiting confirmations). No seller key needed - the challengeId identifies the resource, and settlement is gated by on-chain confirmation. params: challengeId*, hash* |
uxc_get_market | The PUBLIC cross-merchant market catalog: every published checkout across merchants (id, title, price, currency, merchant, domain, payable url). No key. q filters by title/merchant/description. params: q, limit, fields |
uxc_get_services | The PUBLIC cross-provider services catalog (eSend rail: each row carries the provider contact email, a sendable asset code and a price). No key. params: limit, fields |
uxc_search_catalog | Search a merchant catalog (text query + price filters + pagination). The merchant is resolved from a cloud token (the "cloud" argument) or the platform default. No key. params: query, filters, pagination, cloud |
uxc_get_product | Fetch a single catalog product by id. Public (no key); pair with uxc_search_catalog to find ids. params: id*, cloud |
uxc_lookup_products | Batch catalog lookup by ids. Public (no key). params: ids*, cloud, fields |
uxc_create_checkout | Create a UCP checkout session (multi-item, mixed-currency cart) for a merchant catalog. No key. Returns {id, status, currency, line_items, totals, ap2}. params: line_items*, currency, buyer, context, cloud |
uxc_get_checkout | Fetch a UCP checkout session by id (status: incomplete -> ready_for_complete -> completed). No key; pass cloud for a hosted merchant. params: id*, cloud |
uxc_complete_checkout | Mint payment challenges for a checkout session -> ready_for_complete. Optional ap2 (AP2 checkout mandate). No key; pass cloud for a hosted merchant. params: id*, ap2, cloud |
uxc_cancel_checkout | Cancel a UCP checkout session. No key; pass cloud for a hosted merchant. params: id*, cloud |
uxc_get_order | View a UCP checkout session as an order (per-item fulfillment status + fulfillment events). No key; pass cloud for a hosted merchant. params: id*, cloud |
uxc_discover_servers | List every u.cash MCP server in the fleet (buyer, seller, prime, legacy): product surface, auth model, transports with install coordinates, docs URL. Optional q filters by name/product/summary. Discovery only - connect to each server directly with your own credentials; no call is ever proxied. params: q |
uxc_discover_tools | Search tools across every u.cash MCP server by name or description (case-insensitive substring), optionally scoped to one server. Returns the tool, a one-liner, its server, and how to connect. Discovery only - connect to that server directly; no call is ever proxied. params: q, server, limit |
Entries describe changes in tool definitions. They are not statements about a server, its quality or its author. The grade measures how the tool definitions fit model providers (token cost, schema compatibility, confusable names) as scored by the ToolFit engine at the time of the listing. JSON: append .json. Opt-out: how or hello@youraitools.co.