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Zovo Activity Diagram MCP Server

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answering

Zovo Activity Diagram is answering right now. Last checked 5 min ago. It exposes 2 tools.

Turn a few lines of text into a UML activity diagram document, and check the flow.

Uptime history 9 hours of history
9 hours agonow
100.0%
Uptime 24h
31 of 31 checks
2
Tools
read from the server
385 ms
Response time
average over 24h
open, no key
Access
streamable-http

Nothing serious here today

Today is the operative word: we check Zovo Activity Diagram every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

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 5 min ago.

run in your terminal
claude mcp add activity-diagram --transport http https://activity-diagram.zovo.one/mcp
Settings → Connectors → Add custom connector, then paste this address
https://activity-diagram.zovo.one/mcp
~/.codex/config.toml
[mcp_servers.activity-diagram]
url = "https://activity-diagram.zovo.one/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "activity-diagram": {
      "url": "https://activity-diagram.zovo.one/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "activity-diagram": {
      "type": "http",
      "url": "https://activity-diagram.zovo.one/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.

activity
check_activity_diagram
Use this when the user wants activity diagram text checked without a drawing, for example "is my flow valid?" or "which steps are not reachable?". Takes the same diagram text as make_activity_diagram. Returns ready true or false; when a line breaks the grammar or a block is not closed, the line number, the token and the reason; otherwise the counts, the steps with their block path, steps that are not reachable (found by a breadth-first search from the start), and empty branches. Does not draw the diagram or make files.
make
make_activity_diagram
Use this when the user wants a UML activity diagram or a process flowchart drawn from steps, for example "draw the checkout flow as an activity diagram" or "make a PDF of this process". Takes the diagram text in a line grammar: start / stop / end; :Action text; ; if (condition) then (label) ... elseif (condition) then (label) ... else (label) ... endif; while (condition) is (label) ... endwhile (label); fork ... fork again ... end fork; note: text (right after the step it belongs to); # comments. Labels are optional; a condition or label must not contain ( or ). When the user describes the process in words, write it in this grammar first. Returns counts, the steps in flow order with their block path, the links between them, the flow check (steps that are not reachable, empty branches), a check on the drawing, the PDF page count, an interactive diagram, and PDF, SVG and CSV downloads. Refuses a line outside the grammar with its line number and token. Up to 200 actions, 60 decisions, 6 fork branches, 6 nesting levels and 400 characters per line. Does not read repeat loops, switch, swimlanes or partitions. Download links of large diagrams expire after about 1 hour.

Endpoints

URLTransportStateLatencyChecked
https://activity-diagram.zovo.one/mcp streamable-http answering 811 ms 5 min ago

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Zovo Activity Diagram — questions

Answers built from our own checks of this server.

What can Zovo Activity Diagram do?
It exposes 2 tools, read directly from the server on our last check. Among them: check_activity_diagram, make_activity_diagram. 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 Zovo Activity Diagram working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 31 of 31 checks got a reply (100.0%), average response time 385 ms. The bar chart above shows every period we have measured.
How do I connect Zovo Activity Diagram?
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 Zovo Activity Diagram need an API key?
No. Zovo Activity Diagram 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 Zovo Activity Diagram?
It answers our handshake in 385 ms on average, which is faster than 33% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.