Microcharts vs Maidr
A side-by-side look at the Microcharts and Maidr 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 Microcharts for data visualization work as a local process; choose Maidr 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?
Choose Microcharts 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
find_microchart, get_microchart, render_microchart.
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.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | M Maidr | |
|---|---|---|
| Category | Data Visualization | Data Visualization |
| Quality signal | 68/100 · Great | 53/100 · Good |
| 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 | 199 | 1 |
| Directory activity | 3 views 0 installs 0 upvotes | 0 views 0 installs 0 upvotes |
| Tools | 3 | 7 |
| Full listing | View Microcharts | View Maidr |
Tools & capabilities
Microcharts tools 3
find_microchartRank 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_microchartFull 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_microchartRender 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.
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…
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.
Microcharts
{
"mcpServers": {
"ganapativs-microcharts": {
"command": "npx",
"args": [
"-y",
"@microcharts/mcp"
]
}
}
}
Maidr
{
"mcpServers": {
"maidr": {
"command": "uvx",
"args": [
"maidr-mcp"
]
}
}
}
Frequently asked questions
Microcharts is categorized under Data Visualization and uses a local stdio subprocess. Maidr belongs to Data Visualization and uses a local stdio subprocess. Pick Microcharts for data visualization work and Maidr 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.
Microcharts is listed as free. Auth: no auth required. Maidr 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 ganapativs-microcharts and maidr as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Microcharts has a quality signal of 68/100 (Great) with 3 views, 0 installs and 199 GitHub stars. Maidr has 53/100 (Good) with 0 views, 0 installs and 1 GitHub stars.