Development

Log Sequence Diagram Converter

Convert structured service logs into Mermaid or PlantUML sequence diagrams, with optional latency and error annotations

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Quick start

Call this tool from your code in three languages.

cURL

# 1) Upload each file first → returns { filePath }
curl -X POST 'https://api.elysiatools.com/upload/log-sequence-diagram-converter' \
  -F 'file=@/path/to/logFile.ext'

# 2) Call the tool with the returned filePath values
curl -X POST 'https://api.elysiatools.com/en/api/tools/log-sequence-diagram-converter' \
  -F 'logInput=2026-04-06T10:00:01Z api -> auth POST /login | status=401 | latency=82ms | error=invalid token
2026-04-06T10:00:01Z auth -> user-db SELECT user_by_email | status=200 | latency=14ms
2026-04-06T10:00:02Z api -> audit POST /events | status=202 | latency=11ms' \
  -F 'logFile=' \
  -F 'diagramFormat=mermaid' \
  -F 'includeLatencyNotes=true' \
  -F 'highlightErrors=true' \
  -F 'maxSteps=12'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST https://api.elysiatools.com/en/api/tools/log-sequence-diagram-converter

Parameters

Name	Type	Required	Description
logInput	textarea	No	—
logFile	fileupload required	No	—
diagramFormat	select	No	—
includeLatencyNotes	checkbox	No	—
highlightErrors	checkbox	No	—
maxSteps	number	No	—

File-type parameters must be uploaded first via POST /upload/log-sequence-diagram-converter, then the returned filePath is passed to the corresponding file field.

Response format

Text result

JSON

{
  "result": "Processed text content",
  "error": "Error message (optional)",
  "message": "Notification message (optional)",
  "metadata": {
    "key": "value"
  }
}

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-log-sequence-diagram-converter": {
      "name": "log-sequence-diagram-converter",
      "description": "Convert structured service logs into Mermaid or PlantUML sequence diagrams, with optional latency and error annotations",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=log-sequence-diagram-converter",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "log-sequence-diagram-converter",
    "arguments": {
  "logInput": "2026-04-06T10:00:01Z api -> auth POST /login | status=401 | latency=82ms | error=invalid token\n2026-04-06T10:00:01Z auth -> user-db SELECT user_by_email | status=200 | latency=14ms\n2026-04-06T10:00:02Z api -> audit POST /events | status=202 | latency=11ms",
  "logFile": "",
  "diagramFormat": "mermaid",
  "includeLatencyNotes": true,
  "highlightErrors": true,
  "maxSteps": 12
}
  }
}

Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

File parameters accept a public file URL only (https://…). Local paths, data: URIs, and Base64 strings are not supported.

Questions or issues? Contact [email protected]