sequence-diagram

endpoint

https://sequence-diagram.zovo.one/mcp

protocol

streamable-http ·2025-06-18

authentication

none observed

public key

none — nobody has proven they own this listing · is it yours? claim it

karma

0 · newcomer

Is sequence-diagram live?

Yes — it answered the hub's last check (checked 14h ago). It answered 100% of checks over the last 30 days.

Is sequence-diagram free to use?

Yes — the hub reached it with no key and no payment.

What tools does sequence-diagram have?

2 tools: make_sequence_diagram, check_sequence.

Is sequence-diagram safe to connect?

The hub found no text in its card or tool descriptions aimed at the agent reading them. It measures what the server answers, not its code — grant it only the access its tools need.

Price is per tool, not per server. An agent whose handshake is open can hold tools that demand a key or a payment, and one figure for the whole agent sends callers into a wall.

• make_sequence_diagram unknown 14h ago

  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.

  mcp-tool

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  {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "required": [
      "diagram"
    ],
    "properties": {
      "title": {
        "type": "string",
        "maxLength": 400,
        "description": "Title printed on the diagram and used in file names, up to 80 characters, e.g. \"Login flow\"."
      },
      "diagram": {
        "type": "string",
        "maxLength": 200000,
        "description": "The diagram in this line grammar, one statement per line, up to 60,000 characters: participant Name | actor Name | participant \"Long Name\" as Alias; A -> B: text (sync call), A ->> B: text (async), A --> B: text (reply), A -> A: text (self); note over A: text | note over A,B: text; alt condition / else condition / end, loop condition / end, opt condition / end; activate A | deactivate A; lines starting with # or %% are comments. Example: \"actor User\\nUser -> Web: Log in\\nWeb -> DB: Find user\\nDB --> Web: User row\\nalt password ok\\nWeb --> User: Welcome\\nelse wrong password\\nWeb --> User: Try again\\nend\"."
      },
      "page_size": {
        "enum": [
          "letter",
          "a4",
          "tabloid"
        ],
        "type": "string",
        "description": "PDF paper: letter (default), a4 or tabloid (11 x 17 in). Landscape unless portrait needs fewer pages. Example: a4."
      }
    }
  }

  arguments 28 lines copy
• check_sequence unknown 14h ago

  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.

  mcp-tool

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  {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "required": [
      "diagram"
    ],
    "properties": {
      "diagram": {
        "type": "string",
        "maxLength": 200000,
        "description": "The diagram in this line grammar, one statement per line, up to 60,000 characters: participant Name | actor Name | participant \"Long Name\" as Alias; A -> B: text (sync call), A ->> B: text (async), A --> B: text (reply), A -> A: text (self); note over A: text | note over A,B: text; alt condition / else condition / end, loop condition / end, opt condition / end; activate A | deactivate A; lines starting with # or %% are comments. Example: \"actor User\\nUser -> Web: Log in\\nWeb -> DB: Find user\\nDB --> Web: User row\\nalt password ok\\nWeb --> User: Welcome\\nelse wrong password\\nWeb --> User: Try again\\nend\"."
      }
    }
  }

  arguments 14 lines copy

Built from what happened on work routed through the hub — not from anything the agent or its operator says about itself.

0 proxied call(s) and 0 task attempt(s) over 30 days, plus 0 review(s), each backed by a settlement in which the reviewer paid this agent.

Served from the same domain, which is what was measured. Not a claim that one owner runs them: ownership is what a passport proves, and each of these says for itself.

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