xmp4 — Semantic code knowledge for your stack MCP Server

by example4 Your server? Claim it

answering

xmp4 — Semantic code knowledge for your stack is answering right now. Last checked 9 min ago. It exposes 16 tools. Last commit 22 Jul 2026.

OSS libs in your stack, really used: source, tests, callers. C#, Java, TS, Python, Rust, PHP+.

Uptime history 90 days of history · worst day 99%

90 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

194 ms

Response time

average over 24h

Stars

last commit 22 Jul 2026

Nothing serious here today

Today is the operative word: we check xmp4 — Semantic code knowledge for your stack every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 9 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add xmp4 --transport http https://mcp.example4.ai/mcp

Settings → Connectors → Add custom connector, then paste this address

https://mcp.example4.ai/mcp

~/.codex/config.toml

[mcp_servers.xmp4]
url = "https://mcp.example4.ai/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "xmp4": {
      "url": "https://mcp.example4.ai/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "xmp4": {
      "type": "http",
      "url": "https://mcp.example4.ai/mcp"
    }
  }
}

Available tools 16

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

xmp4

xmp4_callees

Find direct callees (methods called by) a symbol in a project. Navigate step-by-step by calling xmp4_callees again on interesting results.

xmp4_callers

Find direct callers of a symbol in a project. Navigate step-by-step by calling xmp4_callers again on interesting results.

xmp4_deps

List external dependencies of a project.

xmp4_grep

Server-side regex text search over indexed project source files. Free tier: requires file_path (single file). Premium tier (XMP4_PREMIUM_GREP_WALK=true): allows file_glob multi-file walk. Prefer xmp4_tests_for/xmp4_usages for SCIP symbols — grep is for text not indexed (comments, literals, config keys).

xmp4_guide

Usage guide for xmp4 tools — read this first to learn the correct workflow

xmp4_hierarchy

Get type hierarchy (base, interfaces, derived) for a symbol in a project.

xmp4_info

Get detailed information about a symbol in a project.

xmp4_outline

Get outline (all symbols) for a file in a project.

xmp4_projects

Search and browse projects by language and name. Use this first to discover projects, then use other tools with the repo name.

xmp4_search

Search symbols in a project. Use xmp4_projects first to find the project identifier.

xmp4_server

Get server information, version, and capabilities

xmp4_source

Extract source code for a symbol in a project.

xmp4_symbol_at

LSP-style position→symbol lookup. Given (file_path, line, column) returns the symbol whose occurrence covers that cursor position. line is 1-based; column is 0-based. Use after xmp4_outline/xmp4_view when you know coordinates and want the canonical symbol.

xmp4_tests_for

Find direct tests that exercise a given symbol (direct callers filtered to test-file candidates per language pattern: CSharp/Java/PHP: *Test(s).<ext>; Python: test_*.py / *_test.py; TypeScript/JavaScript: *.spec/test.{ts,js}; Rust: *_tests.rs / tests/; etc.).

xmp4_usages

Find all usages/references of a symbol in a project.

xmp4_view

Read a raw file excerpt from an indexed project by line range. Use after xmp4_search/xmp4_outline locates the region of interest, or to expand a truncated xmp4_source snippet. Hard cap of 500 lines per call.

Endpoints

URL	Transport	State	Latency	Checked
https://mcp.example4.ai/mcp	streamable-http	answering	168 ms	9 min ago

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xmp4 — Semantic code knowledge for your stack — questions

Answers built from our own checks of this server.

What can xmp4 — Semantic code knowledge for your stack do?

It exposes 16 tools, read directly from the server on our last check. Among them: xmp4_callees, xmp4_callers, xmp4_deps, xmp4_grep, xmp4_guide, xmp4_hierarchy and 10 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is xmp4 — Semantic code knowledge for your stack working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 194 ms. The bar chart above shows every period we have measured.

How do I connect xmp4 — Semantic code knowledge for your stack?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does xmp4 — Semantic code knowledge for your stack need an API key?

No. xmp4 — Semantic code knowledge for your stack completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 16 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is xmp4 — Semantic code knowledge for your stack?

It answers our handshake in 194 ms on average, which is faster than 72% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is xmp4 — Semantic code knowledge for your stack open source?

The code is open source: it is published under the Apache-2.0 licence, written in HTML, 1 stars on GitHub and 3 open issues. The licence covers the code in the repository, not the hosted service at mcp.example4.ai, which runs on its operator's own terms.