Equation.io is an MCP server with 3 tools an agent can call, among them decode_graph_url, encode_graph_url, show_graph. It answers at https://equation.io/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 4 of 4 times since 14 September 2026; the last check, on 18 October 2026, succeeded.
Create interactive 2D and 3D graphs with validated equations, shareable links, and PNG previews.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
decode_graph_url | Decode an equation.io link (either the #-fragment form or the /g/ share form) into its list of equation rows, so you can edit them and build a new link with encode_graph_url. The rows use the equation.io syntax documented in the "syntax" MC Inputs: url |
encode_graph_url | Build an equation.io graph link, validating every row with the app's parser. Pass the COMPLETE graph in "equations": a flat array of strings, one equation or definition per string, in display order — when editing an existing graph (see deco Inputs: equations |
show_graph | Display an interactive equation.io graph inside the conversation, with editable equations, sliders, pan/zoom, and 3D rotation. Use when the user asks to see or explore a graph. Pass the COMPLETE graph as "equations", one equation or definit Inputs: equations |
Every block below points at https://equation.io/mcp. Pick your client and copy.
claude mcp add --transport http equation-io https://equation.io/mcp
{
"mcpServers": {
"equation-io": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://equation.io/mcp"]
}
}
}{
"mcpServers": {
"equation-io": {
"url": "https://equation.io/mcp"
}
}
}{
"servers": {
"equation-io": {
"type": "http",
"url": "https://equation.io/mcp"
}
}
}{
"context_servers": {
"equation-io": {
"url": "https://equation.io/mcp"
}
}
}{
"mcpServers": {
"equation-io": {
"serverUrl": "https://equation.io/mcp"
}
}
}{
"mcpServers": {
"equation-io": {
"url": "https://equation.io/mcp"
}
}
}name: Equation.io
version: 0.0.1
schema: v1
mcpServers:
- name: Equation.io
type: streamable-http
url: https://equation.io/mcp{
"mcpServers": {
"equation-io": {
"httpUrl": "https://equation.io/mcp"
}
}
}{
"mcpServers": {
"equation-io": {
"type": "http",
"url": "https://equation.io/mcp"
}
}
}{
"mcpServers": {
"equation-io": {
"url": "https://equation.io/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fequation.io%2Fmcp&type=streamable_http&id=equation-io&name=Equation.io
It answered our last check on 18 October 2026 in 153 ms. Over 4 checks since 14 September 2026 it answered 4. Status here comes from Neuronto's own probes, not from the publisher.
Yes. It is published by equation.io and served from equation.io, the vendor's own domain: https://equation.io/mcp.
3, as returned by the server's own tools/list on 24 September 2026: decode_graph_url, encode_graph_url, show_graph.
It answered our last check on 18 October 2026 in 153 ms. Over 4 checks since 14 September 2026 it answered 4.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://equation.io/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: io.equation. Endpoint host: equation.io. ARD identifier: urn:air:io.equation:mcp:equation.
First indexed 14 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.