Zovo Sequence Diagram

io.github.theluckystrikePublished by GitHub account theluckystrikev1.0.0Updated Nov 8, 2026

Turns a few lines of text into a UML sequence diagram you can print.

The publisher's own server: Diagram

VerifiedStreamable HTTPWeb executableDeveloper ToolsMedia & Design

Overview

AI-generated overview

Turns a short line-based grammar into a UML sequence diagram and returns PDF, SVG and CSV downloads, or checks the text without drawing.

What you can do
  • Draw a UML sequence diagram from line-based text and get PDF, SVG and CSV downloads
  • Check diagram text without drawing it, reporting whether it is valid and which lines break the grammar
  • Support participants and actors with aliases, sync, async, reply and self messages, notes, alt/else, loop, opt and activate/deactivate blocks
When to use it
Useful when you want a printable sequence diagram of a flow, such as a login process or a set of API calls, generated from a short text description, or when you want diagram text validated before drawing.
Requirements
A remote endpoint; no packages, environment variables or headers are declared. No authentication is declared.
Before you install
Large diagram files are kept for only 1 hour before deletion, so download links stop working after that. Invalid lines are refused with a line number and nothing is drawn.

Installation

In SourceWeft

  1. Open Zovo Sequence Diagram in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.github.theluckystrike%2Fsequence-diagram/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "zovo-sequence-diagram": {
      "type": "http",
      "url": "https://sequence-diagram.zovo.one/mcp"
    }
  }
}

Tools

2

make_sequence_diagram

Make sequence diagram

Use this when the user wants a UML sequence diagram drawn, for example "draw a sequence diagram of the login flow" or "make a PDF of these API calls". Takes the diagram text in a line grammar: participant Name / actor Name / participant "Long Name" as Alias; A -> B: text (sync), A ->> B: text (async), A --> B: text (reply), A -> A: text (self); note over A: text / note over A,B: text; alt cond / else cond / end, loop cond / end, opt cond / end; activate A / deactivate A; # comment lines. When the user describes the flow in words, write it in this grammar first. Returns counts, the messages in order, the blocks with their messages, a check on the drawing (messages in order, frames holding their messages, overlapping labels), the PDF page count and smallest text size, an interactive diagram, and PDF, SVG and CSV downloads. Refuses a line outside the grammar with its line number and token. Up to 30 participants and 400 messages. Does not read features of other diagram languages outside this grammar. A diagram too wide for the paper with text of at least 7 pt gets no PDF (SVG and CSV only), and the result says so. Download links of large diagrams expire after about 1 hour.

Parameterstitlediagramrequiredpage_size

check_sequence

Check sequence diagram text

Use this when the user wants sequence diagram text checked without a drawing, for example "check my sequence diagram for unclosed blocks" or "which participants have no messages". Takes the same diagram text as make_sequence_diagram. Returns ready true or false; when a line breaks the grammar, the line number, the token and the reason; otherwise the participants with outgoing and incoming message counts, message counts by kind, the blocks with their lines, nesting depth and messages, activate lines with no deactivate, and participants that differ only in upper and lower case. Does not draw the diagram or make files, and does not read features of other diagram languages outside this grammar.

Parametersdiagramrequired

Version history

1
  1. v1.0.0LatestNov 8, 2026

Score

83% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • LicenseNot applicable

    A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.

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