Maidr vs MCP Mermaid
A side-by-side look at the Maidr and MCP Mermaid MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
M
MaidrData Visualization · Local subprocess (stdio)Accessible maidr charts in ChatGPT and Claude, explored by sound, braille and screen reader53GoodAuth: no auth requiredVerdict: choose Maidr for data visualization work as a local process; choose MCP Mermaid for data visualization as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
MChoose Maidr when
- You need dedicated capabilities in the Data Visualization domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: No auth required.
- You want tools like
show_chart, update_chart, maidr_list_charts.
Choose MCP Mermaid when
- You need dedicated capabilities in the Data Visualization domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: No auth required.
- You want tools like
generate_mermaid_diagram.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | M Maidr | |
|---|---|---|
| Category | Data Visualization | Data Visualization |
| Quality signal | 53/100 · Good | 65/100 · Great |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | No auth required | No auth required |
| Pricing | Free | Free |
| Required env vars | None listed | None listed |
| Verified owner | Community listing | Community listing |
| GitHub stars | 1 | 642 |
| Directory activity | 0 views 0 installs 0 upvotes | 3 views 0 installs 1 upvotes |
| Tools | 7 | 1 |
| Full listing | View Maidr | View MCP Mermaid |
Tools & capabilities
Maidr tools 7
show_chartDraws the chart and shows it. Returns the `viewId` the other tools take.update_chartDraws a new chart and puts it in place of the one in that `viewId`'s view. Adds no view. A reader in the chart stays in it, on the new chart; anyone else keeps their focus. Both are told it changed.maidr_list_chartsReturns the chart's layers, point counts, and, while the reader is in the chart, where they are, live. Silent.maidr_get_layer_dataReturns a page of a layer's points, each with the `target` that `maidr_navigate` takes. Silent.maidr_navigateMoves the reader to a point and announces it. With `focus: true`, for a reader who asked to be taken there, maidr first moves their keyboard focus into the chart, and answers `focused: true`, or `focused: false` when it could not, leaving the move to wait for them.maidr_list_commandsReturns the reader's commands, each with its id, title, keys, and whether the model can run it, and the reader's current modes (text, sound, braille, autoplay and more). Silent.maidr_run_commandRuns one of the reader's commands, such as `toggle_braille`, `autoplay_forward` or `go_to_max_value`, as if they had pressed its keys, and announces the result. Commands that open a dialog or text field are the reader's own. With `focus: true`, for a reader who asked for it now, maidr first moves t…
MCP Mermaid tools 1
generate_mermaid_diagramGenerate mermaid diagram and chart with mermaid syntax dynamically. Mermaid is a JavaScript based diagramming and charting tool that uses Markdown-inspired text definitions and a renderer to create and modify complex diagrams. The main purpose of Mermaid is to help documentation catch up with development.
Ready-to-paste client configs
Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
Maidr
{
"mcpServers": {
"maidr": {
"command": "uvx",
"args": [
"maidr-mcp"
]
}
}
}
MCP Mermaid
{
"mcpServers": {
"hustcc-mcp-mermaid": {
"command": "npx",
"args": [
"-y",
"mcp-mermaid"
]
}
}
}
Frequently asked questions
Maidr is categorized under Data Visualization and uses a local stdio subprocess. MCP Mermaid belongs to Data Visualization and uses a local stdio subprocess. Pick Maidr for data visualization work and MCP Mermaid for data visualization.
Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.
Maidr is listed as free. Auth: no auth required. MCP Mermaid is listed as free. Auth: no auth required. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.
Yes. MCP clients support multiple servers: add maidr and hustcc-mcp-mermaid as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Maidr has a quality signal of 53/100 (Good) with 0 views, 0 installs and 1 GitHub stars. MCP Mermaid has 65/100 (Great) with 3 views, 0 installs and 642 GitHub stars.