Example4: MCP server, CLI and agent surfaces

Yes: Example4 runs a public MCP server at mcp.example4.ai that listed 16 tools to a client with no credentials on 4 November 2026. Examples: xmp4_callees, xmp4_callers, xmp4_deps. It speaks streamable-http, protocol 2025-03-26. Open servers are readable by any agent; writes still depend on each tool.

Fact sheet

Company	Example4 (registry title: xmp4: Semantic code knowledge for your stack)
Domain	example4.ai
Category	Communication & Support (assigned by this directory from the registry description)
MCP server	Verified (No authentication)
Ora score	none: Ora returned no cached score for example4.ai when asked on 5 November 2026
Company found through	the GitHub MCP Registry; the official MCP Registry
Last verified	4 November 2026

MCP server

Endpoint	`https://mcp.example4.ai/mcp`
How it was found	listed in the GitHub MCP Registry; the official MCP Registry
Transport	streamable-http
HTTP status	200
Protocol version	2025-03-26
Server	xmp4 1.2.7
Capabilities	tools
Tools	16
Resources	0
Prompts	0
Connected	4 November 2026, 20:02 UTC
Handshake time	554 ms over 1 attempt

Tools listed

16 tools

xmp4_callees
xmp4_callers
xmp4_deps
xmp4_grep
xmp4_guide
xmp4_hierarchy
xmp4_info
xmp4_outline
xmp4_projects
xmp4_search
xmp4_server
xmp4_source
xmp4_symbol_at
xmp4_tests_for
xmp4_usages
xmp4_view

Connector log

2 connections on 4 November 2026, read-only methods only

19:57:23Z https://mcp.example4.ai/mcp sent initialize, notifications/initialized, tools/list result verified (HTTP 200) 907 ms
20:02:51Z https://mcp.example4.ai/mcp sent initialize, notifications/initialized, tools/list result verified (HTTP 200) 554 ms

Authentication

Auth type	No authentication

The sign-in route, step by step

Send the handshake to https://mcp.example4.ai/mcp over streamable-http. Servers on the 2026-07-28 revision answer server/discover; older servers answer initialize.
Send tools/list, then resources/list and prompts/list if the capabilities name them.
Send no token. The connector sent none and the server answered, so any MCP client can read this list.
Calling a tool is a separate step this directory never takes.

See OAuth for MCP: client ID metadata documents and dynamic registration for how each route works.

CLI

No CLI is on record for Example4. The directory checks a package only where a source names one, so this is a floor: a company can ship a command line that no source read for this edition mentions. See shipping a CLI agents can use.

Other agent surfaces

Agent surfaces other than MCP and CLI
Surface	Result
OpenAPI file	The path answered with a web page, not an OpenAPI file.
WebMCP in the initial HTML	Not checked: the home page was not read by the shared crawl.
MCP discovery file	Not checked: the domain is not in the shared crawl for this edition.
A2A agent card	Not checked: the domain is not in the shared crawl for this edition.
A2A agent card (older path)	Not checked: the domain is not in the shared crawl for this edition.
agents.json	Not checked: the domain is not in the shared crawl for this edition.
OAuth authorization server metadata	Not checked: the domain is not in the shared crawl for this edition.
NLWeb endpoint	Not checked in this edition.

Registry listings

Registry listings
Registry	Listed
Official MCP Registry	Yes: ai.example4/xmp4
GitHub MCP Registry	Yes
awesome-remote-mcp-servers	No
Smithery	Not checked: Smithery's listing pages and search API were unavailable on 4 November 2026.
Glama	Not checked: Glama's API needs a key and attribution terms.