In-depth architectural comparison of the Microcharts and Markmap MCP Server MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.
At a Glance & Executive Verdict
Microcharts
Data Visualization · Local stdio
Quality: 68/100 (Great) | Auth: No auth required
Markmap MCP Server
Data Visualization · Local stdio
Quality: 68/100 (Great) | Auth: No auth required
Verdict Summary: Choose Microcharts if you need specialized Data Visualization tools running via a local process. Choose Markmap MCP Server if your workspace requires Data Visualization integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.
Which MCP Server Should You Choose?
Choose Microcharts when:
You need dedicated capabilities in the Data Visualization domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
Word-sized charts (sparklines, bars, bullets — 106 types) rendered to self-contained SVG with generated alt text. Three tools: find the right chart for a question, get its wiring, render it. Works in chat surfaces that can't run React. Install via npx -y @microcharts/mcp.
An MCP server built on markmap that converts Markdown to interactive mind maps. Supports multi-format exports (PNG/JPG/SVG), live browser preview, one-click Markdown copy, and dynamic visualization features.
Category & Scope
Tools & Capabilities Breakdown
Microcharts Tools (3)
find_microchart
Rank microcharts chart types against a plain-language question about data ("is it trending?", "error budget", "part to whole"). Returns candidates with the reason each matched. Start here when you know the question, not the chart.
get_microchart
Full wiring detail for one chart by slug: import paths, its props plus the shared props, data shape, best/avoid guidance, a copy-runnable example, and `sample` — the example as JSON props you can pass straight to render_microchart.
render_microchart
Render a chart to a finished, self-contained SVG (styles embedded) plus its generated alt text — for surfaces that can't run React. Pass the series as `data`; put other props (value, target, curve, color, width) in `props`. Each chart takes its own data shape — get_microchart returns a valid `sample` to adapt.
Markmap MCP Server Tools (4)
markdown_to_mindmap
Convert structured Markdown (headings # and nested lists -) into an interactive mind map HTML file, with optional server-side PNG/JPG/SVG export.
Use when the user wants a visual mind map/outline of structured content (architecture, plans, notes, hierarchies), or asks to visualize / mindmap / diagram. Do not use for flat unstructured text (restructure first), or to list/read existing outputs (use list_mindmaps / get_mindmap).
Behavior:
- WRITES files under the configured output dir. HTML is always written; image formats write an extra file. Reusing filename overwrites.
- html is fast (<1s). png/svg/jpg launch headless Chromium via Playwright (5–15s; requires: npm install playwright && npx playwright install chromium).
- Local only — no external APIs or third-party keys. Open mode=never: The server never opens the browser.
- Offline=false (server config).
Response:
- JSON {"htmlFilePath":"<path>","filePath":"<path>"} — htmlFilePath is always the HTML source; filePath is the primary artifact (HTML or image).
- Return mode=path: Paths JSON only — no inline content.
- Errors: isError:true with {"error","message"}.
Ready-to-Paste Client Configurations
Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).
Microcharts is categorized under Data Visualization and uses a local stdio subprocess. In contrast, Markmap MCP Server belongs to Data Visualization using local stdio subprocess. Select Microcharts when you need capabilities focused on data visualization and Markmap MCP Server when you require tools for data visualization.
List markmap* files (html/png/jpg/jpeg/svg) in the output directory, newest first. Read-only — no side effects. Missing/empty dirs return {"files":[]}.
Returns: {"outputDir","files":[{"name","filePath","size","mtimeMs","mtime"}]} (mtime is ISO 8601).
Use before get_mindmap to discover paths, or before cleanup_mindmaps to preview targets. Not for generating new mind maps (use markdown_to_mindmap).
get_mindmap
Retrieve a generated mind map file by absolute path. Read-only — no side effects. Only paths inside the configured output directory are allowed (path traversal denied).
Returns JSON {"filePath","mimeType","size"}. For text/html or image/svg+xml under 200KB, also appends a text content block. PNG/JPG return metadata only (no image block) — re-export via markdown_to_mindmap with format=png|jpg if the agent needs pixels.
On error: isError:true with {"error":"Failed to retrieve mind map","message"}.
Use list_mindmaps first to obtain a valid filePath. Prefer this over regenerating when the file already exists.
cleanup_mindmaps
Permanently delete markmap* files from the output directory. DESTRUCTIVE and irreversible when dryRun is false.
dryRun defaults to false — omitting it WILL delete. Always call once with dryRun=true to preview, then again with dryRun=false to commit. Prefer list_mindmaps beforehand.
Returns {"deleted":["<path>",...],"kept":<n>}; dryRun responses also include dryRun:true and do not delete.
Use instead of manual file deletion when pruning old generated mind maps.