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Maxwell Defense MCP Server

answering

Maxwell Defense is answering right now. Last checked 14 min ago. It exposes 2 tools. Last commit 18 Sep 2026.

Model proof-of-work policy and latency for AI agents. $1 USDC rehearsal; no runtime protection.

Uptime history 5 days of history · worst day 99%
5 days agonow
98.9%
Uptime 24h
90 of 91 checks
2
Tools
read from the server
457 ms
Response time
average over 24h
0
Stars
last commit 18 Sep 2026

What the code does

We read the source, 22 h ago · tools taken from the live server · rules 3dff92dd89df

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

Unsafe deserialization gateway/state_store.py:356
                state = pickle.loads(row[0])
Runs an external command mcp-publish/smoke_all.py:176
    r = subprocess.run([sys.executable, "-c", code], capture_output=True, text=True)
Page executes code built at runtime gateway/stats.html:191
  $("kpis").innerHTML = cells.map(([l,v,d]) =>
Dumps the whole environment growth-agent/growth_agent.py:512
        self.environ = dict(os.environ if environ is None else environ)

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 14 min ago.

run in your terminal
claude mcp add maxwell-defense --transport http https://mcp.viridis-security.com/maxwell-defense/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "maxwell-defense": {
      "url": "https://mcp.viridis-security.com/maxwell-defense/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.maxwell-defense]
url = "https://mcp.viridis-security.com/maxwell-defense/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "maxwell-defense": {
      "url": "https://mcp.viridis-security.com/maxwell-defense/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "maxwell-defense": {
      "url": "https://mcp.viridis-security.com/maxwell-defense/mcp"
    }
  }
}

Available tools 2

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

describe
describe_agent
Free scope and price discovery.
rehearse
rehearse_defense
$1 bounded policy rehearsal. Returns a model and local hash measurement. Does not activate endpoint protection or establish energy savings.

Endpoints

URLTransportStateLatencyChecked
https://mcp.viridis-security.com/maxwell-defense/mcp streamable-http answering 380 ms 14 min ago

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same job, measured the same way
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ProofSlip
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Laviya Agent Skills
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Vantio Gate
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Vantio Gate — Policy Latch dry-run evaluate for agents. No live enforce from MCP.

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Maxwell Defense — questions

Answers built from our own checks of this server.

What can Maxwell Defense do?
It exposes 2 tools, read directly from the server on our last check. Among them: describe_agent, rehearse_defense. 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 Maxwell Defense working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 90 of 91 checks got a reply (98.9%), average response time 457 ms. The bar chart above shows every period we have measured.
How do I connect Maxwell Defense?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Maxwell Defense need an API key?
No. Maxwell Defense completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 2 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Maxwell Defense?
It answers our handshake in 457 ms on average, which is faster than 32% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.
Is Maxwell Defense open source?
We cannot say either way: written in Python, 0 stars on GitHub and 1 open issue, but we could not determine the licence, and without one the code is not open source by default.