docs: add MCP servers guide with Firecrawl as featured example

Adds docs/mcp-servers.md — the first documentation on how to configure
MCP servers in OpenClaude. Covers .mcp.json setup, the Firecrawl MCP
server for web scraping and search, available tools, and a pattern for
adding multiple servers.

docs/mcp-servers.md

@@ -0,0 +1,94 @@
+# MCP Servers
+
+OpenClaude supports Model Context Protocol (MCP) servers. MCP lets the agent call external tools — web scraping, databases, APIs, file systems, and more — beyond what's built in.
+
+## How to Configure
+
+Create a `.mcp.json` file in the root of any project you open with OpenClaude:
+
+```json
+{
+  "mcpServers": {
+    "your-server-name": {
+      "command": "npx",
+      "args": ["-y", "your-mcp-package"],
+      "env": {
+        "YOUR_API_KEY": "your-key-here"
+      }
+    }
+  }
+}
+```
+
+OpenClaude picks up `.mcp.json` automatically when you launch it from that directory. No restart needed after creating the file.
+
+## Firecrawl — Web Scraping and Search
+
+The built-in `WebFetch` tool works for simple pages. For JavaScript-rendered sites, paywalls, full-site crawls, or structured data extraction, [Firecrawl](https://firecrawl.dev) is the recommended MCP server.
+
+**Get an API key at [firecrawl.dev/app/api-keys](https://www.firecrawl.dev/app/api-keys).**
+
+Add this to your project's `.mcp.json`:
+
+```json
+{
+  "mcpServers": {
+    "firecrawl": {
+      "command": "npx",
+      "args": ["-y", "firecrawl-mcp"],
+      "env": {
+        "FIRECRAWL_API_KEY": "your-api-key-here"
+      }
+    }
+  }
+}
+```
+
+Or use the remote hosted endpoint (no local process needed):
+
+```bash
+claude mcp add firecrawl --url https://mcp.firecrawl.dev/YOUR_API_KEY/v2/mcp
+```
+
+### What It Adds
+
+Once configured, the agent can call these tools directly:
+
+| Tool | What it does |
+|------|-------------|
+| `firecrawl_scrape` | Scrape a single URL to clean markdown, handles JS-rendered pages |
+| `firecrawl_search` | Web search with optional full-page content extraction |
+| `firecrawl_crawl` | Crawl an entire site section (e.g., all `/docs/`) |
+| `firecrawl_map` | Discover all URLs on a site |
+| `firecrawl_extract` | Pull structured data from pages using a JSON schema |
+| `firecrawl_agent` | Autonomous research agent that browses and synthesizes across pages |
+
+### Verify
+
+After adding `.mcp.json`, launch OpenClaude and ask it to scrape a page or search the web. The agent will use Firecrawl automatically when the task involves fetching web content.
+
+For self-hosted Firecrawl instances, add `FIRECRAWL_API_URL` pointing to your instance alongside the API key.
+
+## Other Servers
+
+Any MCP-compatible server works the same way. Add multiple servers under `mcpServers`:
+
+```json
+{
+  "mcpServers": {
+    "firecrawl": {
+      "command": "npx",
+      "args": ["-y", "firecrawl-mcp"],
+      "env": {
+        "FIRECRAWL_API_KEY": "your-key"
+      }
+    },
+    "another-server": {
+      "command": "npx",
+      "args": ["-y", "another-mcp-package"]
+    }
+  }
+}
+```
+
+Browse available MCP servers at [modelcontextprotocol.io](https://modelcontextprotocol.io).