Dyscalculia.io
Open number-sense practice data and game catalogue for dyscalculia. Read-only.
Install
Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).
claude mcp add --transport http dyscalculia-io 'https://mcp.dyscalculia.io/mcp'{
"mcpServers": {
"dyscalculia-io": {
"type": "http",
"url": "https://mcp.dyscalculia.io/mcp"
}
}
}Documentation
From the project's README on GitHub, refreshed weekly. Links open on GitHub.
Contents
dyscalculia-mcp
MCP server for the sourced dyscalculia statistics on Dyscalculia.io: prevalence studies with sample size, year, age and reference, 93 references with DOI or PMID where the site has one, the chart and table datasets, and a plain description of the five number-skill screening games. Ask an assistant "what share of children have dyscalculia, and which study says so?" and it answers from sourced figures. Read-only.
Tools
| Tool | What it returns |
|---|---|
get_prevalence | Prevalence figures with sample size, publication year, age, reference key and a calc flag; filter by study, age or percent range |
list_studies | Every source the statistics page cites, with the topics it supports (prevalence, sex ratio, comorbidity, persistence, family, maths anxiety, interventions, ...) |
get_reference | One full citation by key (for example shalev2000) with DOI or PMID where the site has one, and the topics that cite it |
explain_screening_test | The five screening games: what each measures, item counts, how items and games are scored in general terms, optional item sets, and the limits |
list_chart_data | The 4 charts and 3 tables on the statistics page with their CSV, JSON and SVG addresses; pass an id to get the rows with notes and reference keys |
get_citation | License (CC BY 4.0 compilation, each figure belongs to its source), citation text, an HTML credit link and downloads |
Every tool is read-only (readOnlyHint). Invalid input returns isError with the valid options. No tool scores a person,
takes answers or returns a screening result: explain_screening_test describes the test, nothing more.
Use
Hosted (no install): https://mcp.dyscalculia.io/mcp. Docs for each client: https://docs.dyscalculia.io/mcp
Local:
{ "mcpServers": { "dyscalculia": { "command": "npx", "args": ["-y", "dyscalculia-mcp"] } } }Claude Code: claude mcp add --scope user dyscalculia -- npx -y dyscalculia-mcp.
Self-host the HTTP transport: npm run build && PORT=3000 npm run start:http (POST /mcp, stateless, /health), or build the
Dockerfile (node:22-alpine, non-root, port 3000).
Honest limits
- There is no global prevalence figure. No worldwide pooled meta-analysis of dyscalculia prevalence was found; the "worldwide" entry is a range across population studies. Studies use different criteria and ages, so figures are not directly comparable, and one English sample gave 1 to 6 percent depending on the cut-off.
- The figures are published research estimates, not a diagnosis of any person. The server gives no advice about a learning difficulty and does not tell anyone whether they have dyscalculia.
- The screening test is a screening of basic number skills. It has no norm sample, no percentiles and no published accuracy study; it does not diagnose dyscalculia and does not rule it out.
- DOIs and PMIDs are exactly those the site prints. Where the site has none, none is given.
Source of the figures: https://dyscalculia.io/dyscalculia-statistics · Method: https://dyscalculia.io/methodology
Data CC BY 4.0 (see dyscalculia-data), code MIT.
Frequently asked questions
What is Dyscalculia.io?
Open number-sense practice data and game catalogue for dyscalculia. Read-only.
How do I install Dyscalculia.io?
It runs as a remote server. In Claude Code: claude mcp add --transport http dyscalculia-io 'https://mcp.dyscalculia.io/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.
Does Dyscalculia.io need an API key?
Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.
Is Dyscalculia.io open source?
Yes. Its code is on GitHub under the MIT license.
Who maintains Dyscalculia.io?
It is published by Dyscalculia-io. AI.tn lists it but does not maintain or endorse it.
From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.