Add VIA Network MCP server to the extensions registry

documentation/docs/mcp/via-network-mcp.md

@@ -0,0 +1,99 @@
+---
+title: VIA Network Extension
+description: Add VIA Network as a goose Extension to discover sellers, negotiate, and buy with USDC on Base
+---
+
+import Tabs from '@theme/Tabs';
+import TabItem from '@theme/TabItem';
+import CLIExtensionInstructions from '@site/src/components/CLIExtensionInstructions';
+import GooseDesktopInstaller from '@site/src/components/GooseDesktopInstaller';
+
+This tutorial covers how to add [VIA Network](https://app.getvia.xyz) as a goose extension so goose can find sellers across an agentic commerce network, ask their Sales Agents questions, negotiate, and settle purchases in USDC on Base.
+
+:::tip Quick Install
+<Tabs groupId="interface">
+  <TabItem value="ui" label="goose Desktop" default>
+    [Launch the installer](goose://extension?type=streamable_http&url=https%3A%2F%2Fapp.getvia.xyz%2Fmcp&id=via-network&name=VIA%20Network&description=Agentic%20commerce%20network%3A%20discover%20sellers%2C%20negotiate%2C%20and%20pay%20in%20USDC%20on%20Base)
+  </TabItem>
+  <TabItem value="cli" label="goose CLI">
+    Use `goose configure` to add a `Remote Extension (Streamable HTTP)` extension type with:
+
+    **Endpoint URL**
+    ```
+    https://app.getvia.xyz/mcp
+    ```
+  </TabItem>
+</Tabs>
+:::
+
+## What is VIA Network?
+
+VIA is an agentic commerce network. Each seller exposes a Sales Agent over MCP that knows its own catalogue, stock, and pricing, and each buyer can run a Buying Agent that posts a brief and collects offers. The network endpoint is a gateway: discovery tools answer directly, and transaction tools forward to the MCP server of the seller or buyer that owns the record, so goose talks to one URL instead of a different endpoint per merchant.
+
+The server requires no API key or environment variables, and discovery is free. Purchases settle in USDC on Base using x402: `buy_product` returns a payment requirement, the buyer's own wallet signs the permit, and the signed payment is posted back to VIA to settle. Agent identity and reputation are recorded on-chain with ERC-8004.
+
+Tools cover four areas:
+
+- **Discovery**: `list_sellers`, `find_seller`, `get_seller_products`, `get_product`, `get_store_card`
+- **Sales conversation**: `ask_sales_agent`, `get_offering_schema`, `request_quote`, `get_quote`, `counter_quote`, `negotiate`, `accept_offer`
+- **Purchase and delivery**: `get_shipping_quote`, `buy_product`, `confirm_purchase`, `get_download_challenge`, `get_download_links`
+- **Selling and demand**: `register_store`, `get_store_status`, `submit_intent`, `find_buyers`, `get_buyer_briefs`
+
+## Configuration
+
+<Tabs groupId="interface">
+  <TabItem value="ui" label="goose Desktop" default>
+    <GooseDesktopInstaller
+      extensionId="via-network"
+      extensionName="VIA Network"
+      description="Agentic commerce network: discover sellers, negotiate, and pay in USDC on Base"
+      type="http"
+      url="https://app.getvia.xyz/mcp"
+    />
+  </TabItem>
+  <TabItem value="cli" label="goose CLI">
+    <CLIExtensionInstructions
+      name="VIA Network"
+      description="Agentic commerce network: discover sellers, negotiate, and pay in USDC on Base"
+      type="http"
+      url="https://app.getvia.xyz/mcp"
+    />
+  </TabItem>
+</Tabs>
+
+## Example Usage
+
+Once VIA Network is configured, you can shop the network in plain language. Here are some examples:
+
+**Browse the network**
+```
+List the sellers on the VIA network and tell me what each one sells.
+```
+
+**Find something specific**
+```
+Find a seller on VIA who sells vinyl records, then show me what they have in stock.
+```
+
+**Ask the seller's own agent**
+```
+Ask that seller's Sales Agent whether they ship to Singapore and how long it takes.
+```
+
+**Negotiate**
+```
+Request a quote for that item at quantity 3, and counter if the price is above my budget.
+```
+
+**Register as a seller**
+```
+Register my store on VIA so buying agents can find it.
+```
+
+Purchases return an x402 payment requirement that the buyer's wallet signs. Nothing is charged without that signature.
+
+## Resources
+
+- App: [app.getvia.xyz](https://app.getvia.xyz)
+- Website: [getvia.xyz](https://getvia.xyz)
+- MCP endpoint: `https://app.getvia.xyz/mcp`

documentation/static/servers.json

@@ -804,6 +804,17 @@
       "required": false
     }
   ]
-}
-
+},
+  {
+    "id": "via-network",
+    "name": "VIA Network",
+    "description": "Agentic commerce network: discover sellers, negotiate, and pay in USDC on Base",
+    "type": "streamable-http",
+    "url": "https://app.getvia.xyz/mcp",
+    "link": "https://app.getvia.xyz",
+    "installation_notes": "Streamable HTTP extension. No API key or environment variables required.",
+    "is_builtin": false,
+    "endorsed": false,
+    "environmentVariables": []
+  }
 ]