wmcp.sh

Add any website to Claude, Cursor, or Codex as agent-callable MCP tools — in one line of config. No per-server build, no SDK.

▶ Watch the 30-sec demo — paste a URL → tools appear → agent calls add_to_cart.

wmcp.sh is a real, spec-compliant MCP server (JSON-RPC 2.0 over Streamable HTTP) that turns any URL into agent-callable tools — Shopify product pages, OpenAPI specs, JSON-LD pages, OAuth-protected APIs. Every other MCP server is one-per-service and hand-built; wmcp is one endpoint that adapts to whatever URL you point it at. Paste a config line and your agent can read prices, list variants, or call an API on a site that ships no MCP server of its own.

Live now: wmcp.sh · Directory · Blog · /llms.txt

30-second quickstart

Connect any URL to your MCP client (the flagship)

Point any MCP client — Claude Code, Claude Desktop, Cursor, Codex, Cline, VS Code — at a per-URL endpoint: /mcp/u/<base64url-of-your-url>. That's the whole install. The server exposes that page's extracted tools natively (tools/list + tools/call):

{
  "mcpServers": {
    "allbirds": {
      "type": "http",
      "url": "https://wmcp.sh/mcp/u/aHR0cHM6Ly93d3cuYWxsYmlyZHMuY29tL3Byb2R1Y3RzL21lbnMtd29vbC1ydW5uZXJz"
    }
  }
}

That base64url string decodes to https://www.allbirds.com/products/mens-wool-runners. Encode your own:

node -e "process.stdout.write(Buffer.from('https://your-url.example').toString('base64url'))"

Compose several sites into one MCP server — repeat the url param; tool names are namespaced per host (site_a__add_to_cart):

{ "mcpServers": { "wmcp": { "type": "http", "url": "https://wmcp.sh/mcp/url?url=https://site-a.example&url=https://site-b.example" } } }

tools/list (discovery) is free. tools/call (live execution) needs a paid key, passed as a Bearer header:

{ "mcpServers": { "wmcp": { "type": "http", "url": "https://wmcp.sh/mcp/u/<base64url>", "headers": { "Authorization": "Bearer webmcp_live_…" } } } }

type may be "http" or "streamable-http" (same transport). For Claude Desktop builds without remote-MCP support, bridge with npx mcp-remote <url>. Full walkthrough: /how-to/install-claude-desktop-mcp.

Or just hit the REST API (no client, no key for reads)

# any URL → MCP-shaped tool list
curl 'https://wmcp.sh/api/v1/tools?url=https://www.allbirds.com/products/mens-wool-runners'

Returns a JSON tool list in the Claude tool_use / OpenAI function_call / MCP shape — get_price, add_to_cart, list_variants — that any agent can invoke.

How it works

A 5-tier extraction chain turns most URLs into tools with zero per-site work. Each tier is tried in order; the first that detects the URL wins. The last tier is an LLM fallback that produces best-effort tools and caches the result.

┌──────────────────────────────────────────────────┐
│  URL in →                                          │
│    1. Shopify       (~4M storefronts, <50ms)       │
│    2. JSON-LD       (schema.org Product, etc.)     │
│    3. OpenAPI       (any 3.x / Swagger 2.0 → tools)│
│    4. Provider      (Stripe, GitHub, Slack…)       │
│    5. LLM-fallback  (Claude Haiku, cached 30d)     │
│  → MCP tools out                                   │
└──────────────────────────────────────────────────┘

Cached on Cloudflare KV; sub-50ms on a cache hit. Discovery (tools/list) is free; live execution (tools/call) runs through the same engine and needs a paid key. For sites that block bot fetches or hydrate client-side from authed APIs, a Chrome extension extracts schemas in your browser and pushes them back to the shared cache. Full design in docs/ARCHITECTURE.md.

What makes it different

Today, "an MCP server for X" means someone wrote, built, and deployed a dedicated server for service X. There are hundreds of them, each one a separate repo and a separate install.

wmcp inverts that:

There's also a saved toolset endpoint — /mcp/set/<id> — that bundles a curated set of URLs behind one stable MCP server (a Pro feature). It's genuinely novel: instead of one-per-service, wmcp turns arbitrary URLs into MCP tools on demand.

Directory, SDKs & extension

• Directory — every URL the community has indexed, browsable and searchable: wmcp.sh/directory. Submit your site (free): wmcp.sh/directory/submit.
• OAuth-vault proxy — connect an OAuth-protected upstream once; call it as MCP from any client: https://wmcp.sh/mcp/<provider> (Google, GitHub, Slack, Notion, Linear, Discord, Stripe, Anthropic).
• Python SDK — pip install wmcp. Native fetch-style client, zero required deps.
• JavaScript/TypeScript SDK — npm install @wmcp/sdk with one-line adapters for @wmcp/sdk/anthropic, @wmcp/sdk/openai, @wmcp/sdk/langchain, and @wmcp/sdk/vercel-ai.

import { WmcpClient } from "@wmcp/sdk";
import { toAnthropicTools } from "@wmcp/sdk/anthropic";

const client = new WmcpClient(); // anonymous = 100 reads/day per IP
const tools = toAnthropicTools(await client.tools("https://www.allbirds.com/products/mens-wool-runners"));

• Chrome extension — for SPA / bot-walled / auth-walled sites. Extracts client-side, pushes cached schemas back to the hosted API so the next person gets them instantly — even if they never install it.

Pricing

Two separate ladders. Self-serve API plans for anyone, and a done-for-you service if you want a custom adapter built and run for you.

Self-serve API (manage at /dashboard):

Done-for-you service (/managed):

What's in the repo

.
├── adapters/                Shared adapter library (worker + extension import the same files)
│   ├── shopify.js           ~4M storefronts, read + add_to_cart
│   ├── jsonld.js            generic schema.org Product
│   ├── openapi.js           any OpenAPI 3.x / Swagger 2.0 → tools
│   ├── llm.js               Claude Haiku fallback
│   ├── CONTRACT.md          the detect() / extract() / actions interface
│   ├── _template/           starter scaffold for new adapters
│   └── _test/run.mjs        node:test harness, zero deps
│
├── worker/                  Hosted API + MCP server at wmcp.sh
│   └── src/                 Hono routes, mcp_server.ts, OAuth, billing, SEO pages, token vault
│
├── extension/               Chrome MV3 extension (cache-back path)
│
├── sdks/
│   ├── python/wmcp/         pip install wmcp
│   └── javascript/src/      @wmcp/sdk (+ anthropic / openai / langchain / vercel-ai adapters)
│
├── docs/                    QUICKSTART · ARCHITECTURE · API · SELF_HOSTING
├── launch/                  Launch artifacts (HN draft, registry submissions, demo)
├── AGENTS.md                rules for AI coding agents working on this repo
├── CONTRIBUTING.md          how to send a PR
├── ADAPTERS_WANTED.md       open targets, ranked by difficulty
└── LICENSE                  MIT

Contributing

New adapters are welcome via PR. The whole point is that adding a site shouldn't mean building a new server.

git clone https://github.com/New1Direction/webmcp-anything
cd webmcp-anything
cp -r adapters/_template adapters/mysite
# edit adapters/mysite/adapter.js — implement detect() + extract()
node adapters/_test/run.mjs