WebMCP Hosting
WebMCP is how Chrome browser agents discover and call bounded tools while shoppers stay on www.yourbrand.com. It is not the URL you give ChatGPT — that is remote MCP on mcp.yourbrand.com. We host both surfaces from one relay when you are ready.
What the browser API does, where it stops, and why the credentials belong on a server you do not have to run.
WebMCP is a W3C-aligned browser API: pages register tools with document.modelContext so in-browser agents can search, quote, navigate, and click out to your checkout — on your origin, in Chrome Origin Trial today.
It is not a replacement for remote MCP. ChatGPT Apps and Claude Connectors connect to mcp.yourbrand.com/mcp over the wire protocol — they never call document.modelContext on your marketing site.
Tool handlers should not embed upstream API keys in JavaScript. MCPBundles runs a tenant relay: the browser calls same-origin or MCPBundles-hosted endpoints; we hold credentials, rate limits, and audit server-side.
Agents look for /.well-known/webmcp on your origin — a manifest listing tool names, descriptions, and schemas. We generate and host that manifest as part of WebMCP Hosting.
Most brands do not need two separate integrations. Wire data once through MCPBundles; choose www, mcp subdomain, or both.
CMS export, product feed, JSON-LD, sitemap-backed fetch, or web-app backend — we wire server-side tools through MCPBundles.
Hosted script + Origin Trial on www.yourbrand.com registers read/search/quote tools for Chrome browser agents.
The same relay powers MCP tools on mcp.yourbrand.com — carousel structuredContent for ChatGPT without standing up a new REST API first.
Store submissions use mcp.yourbrand.com/mcp. WebMCP complements Shelf GEO; both share honest click-out to your site.
Who calls it
Where it lives
Protocol
Typical first step
Shared backend
No. ChatGPT needs remote MCP on mcp.yourbrand.com. WebMCP is an additional surface for Chrome browser agents on your marketing site. Many brands start with one relay and add both surfaces in the same engagement.
Often yes — if we can build useful server-side tools from structured site content, CMS, or feeds. Pure static brochure copy with no inventory is still a weak fit for comparison-style carousels until we add a feed or backend.
Yes. mcpbundles.com ships WebMCP on /skills and selected product pages — same-origin relay, manifest, and read-only catalog tools we extend for customer hosting.
WebMCP Hosting is a spoke under our business offering. Managed MCP Apps is the full directory launch — build, docs portal, store submissions, and optional WebMCP on www. Request a scoping call and we map which surfaces fit your data path.
Tell us about your site, data sources, and directory goals. We reply within one business day with next steps.
Request a directory launch