io.github.adewale/agentic-mermaid

up checked 2026-11-11T13:38:05.141Z

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Publisher-provided title

Agentic Mermaid

Publisher-provided description

Render, verify, describe, and safely edit Mermaid diagrams through MCP.

Summary by lookupd

Renders, verifies, describes, and edits Mermaid diagrams as SVG, PNG, or ASCII, and builds or mutates diagram source via structured ops.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http agentic-mermaid https://agentic-mermaid.dev/mcp

Claude Code, npm package (stdio)

claude mcp add agentic-mermaid -- npx -y agentic-mermaid

Codex, remote (streamable-http)

codex mcp add agentic-mermaid --url https://agentic-mermaid.dev/mcp

Codex, npm package (stdio)

codex mcp add agentic-mermaid -- npx -y agentic-mermaid

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "agentic-mermaid": {
      "url": "https://agentic-mermaid.dev/mcp"
    }
  }
}

Cursor, npm package (stdio) → .cursor/mcp.json

{
  "mcpServers": {
    "agentic-mermaid": {
      "command": "npx",
      "args": [
        "-y",
        "agentic-mermaid"
      ]
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (9 tools)

Publisher-provided text

• execute Run JavaScript in an isolated sandbox; return a value. No promises, async/await, dynamic import, or type annotations. SVG/ASCII/layout enforce security:'strict'
• describe_sdk Return version-matched mutation operations for one diagram family, or use capability=resolved-scene for painted geometry, runtime limits and typed errors. Use d
• render_svg Render a Mermaid source string to themeable SVG. Returns { ok, svg }. Layout is deterministic: identical input produces identical geometry. The hosted boundary
• render_ascii Render a Mermaid source string to text. Returns { ok, text }. useAscii true → plain ASCII (+,-,|); false/absent → Unicode box drawing (┌,─,│). targetWidth sets
• render_png Rasterize a Mermaid source string to PNG. Returns { ok, png_base64 }. Hosted rendering uses resvg-wasm with bundled fonts; bytes may differ from the local napi
• verify Parse and verify source, structure, and renderability. This runs the graphical pipeline. Returns { ok, family, summary, warnings, layout: { bounds, nodes, edges
• describe Describe a Mermaid diagram. format=text returns { ok, text } with one or two summary sentences; format=json returns { ok, tree } with the AX tree; format=facts
• mutate Apply a list of structured edit ops to an existing Mermaid `source` and return the edited diagram. This is the declarative counterpart to `execute`: plain JSON
• build Author a new Mermaid diagram from blank by folding a list of structured ops over an empty diagram of `family`. The declarative counterpart to hand-writing sourc

Details

• Version: 0.5.6
• Transports: streamable-http, stdio
• Uptime (7 days): 100%
• Median latency: 1253 ms
• First indexed: 2026-11-01T09:19:06.819Z
• Last seen in registry: 2026-11-02T15:17:17.489Z
• Repository: https://github.com/adewale/agentic-mermaid
• Website: https://agentic-mermaid.dev/

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