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Equation.io

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equation.io

Create interactive 2D and 3D graphs with validated equations, shareable links, and PNG previews.

https://equation.io/mcpWebsiteNo authMCP 2025-06-18v1.0.1last checked 30 Oct 2026spoke MCP on 100% of 91 checks (30 days)initialize in 176 ms

Last checked 30 Oct 2026

  • ✓Answered the MCP handshake (MCP 2025-06-18)
  • ✓Auth detected: No auth
  • ✓Lists 3 tools
  • ✓No blockers or warnings
  • ✓Spoke MCP on 91 of 91 checks (30 days)

Will my client connect?

Decided from what the probe found at the endpoint, and from what each client's own documentation says it can complete. Every row carries the day that documentation was read.

✓Claude CodeConnects

The endpoint answers an anonymous handshake, so no credential is needed.

claude mcp add --transport http equation-io https://equation.io/mcp

Claude Code docs · read on 2026-08-30

✓Claude (claude.ai & Desktop)Connects

The endpoint answers an anonymous handshake, so no credential is needed.

Settings → Connectors → Add custom connector, then paste https://equation.io/mcp.

Claude (claude.ai & Desktop) docs · read on 2026-08-30

✓ChatGPTConnects

The endpoint answers an anonymous handshake, so no credential is needed.

Settings → Apps → Advanced settings → Developer mode, then create a connector pointing at https://equation.io/mcp.

ChatGPT docs · read on 2026-08-30

✓CursorConnects

The endpoint answers an anonymous handshake, so no credential is needed.

{
  "mcpServers": {
    "equation-io": {
      "url": "https://equation.io/mcp"
    }
  }
}

Cursor docs · read on 2026-08-30

✓VS Code (Copilot)Connects

The endpoint answers an anonymous handshake, so no credential is needed.

{
  "servers": {
    "equation-io": {
      "type": "http",
      "url": "https://equation.io/mcp"
    }
  }
}

VS Code (Copilot) docs · read on 2026-08-30

How to authenticate

Checked against the endpoint by our probe on 30 Oct 2026. These are the capabilities the server advertises, not a prediction about any particular client.

Scheme
No auth
Protected-resource metadata
✕Not found

Without it a client has to guess where the authorization server lives.

Anonymous access
Handshake succeeds; 3 tools listable

What the probe found

Server card published

https://equation.io/mcp/server-card describes this endpoint, and nothing in it contradicts the handshake.

Tools

decode_graph_urlencode_graph_urlshow_graph

Contract history

18 Oct 2026v1.0.11 breakinginstructions rewritten

Breaking: encode_graph_url

Instructions rewritten: encode_graph_url. The description an agent follows changed; the callable contract may not have.

2 Oct 2026v1.0.13 cosmeticinstructions rewritten

Instructions rewritten: decode_graph_url, encode_graph_url, show_graph. The description an agent follows changed; the callable contract may not have.

28 Sep 2026v1.0.01 cosmeticinstructions rewritten

Instructions rewritten: encode_graph_url. The description an agent follows changed; the callable contract may not have.

28 Sep 2026v1.0.01 cosmeticinstructions rewritten

Instructions rewritten: encode_graph_url. The description an agent follows changed; the callable contract may not have.

27 Sep 2026v1.0.01 cosmeticinstructions rewritten

Instructions rewritten: encode_graph_url. The description an agent follows changed; the callable contract may not have.

23 Sep 2026v1.0.01 cosmeticinstructions rewritten

Instructions rewritten: encode_graph_url. The description an agent follows changed; the callable contract may not have.

21 Sep 2026v1.0.01 breakinginstructions rewritten

Breaking: show_graph

Instructions rewritten: show_graph. The description an agent follows changed; the callable contract may not have.

19 Sep 2026v1.0.01 breaking1 compatible3 cosmeticinstructions rewritten

Breaking: ui://equation/graph-v1.html

Instructions rewritten: decode_graph_url, encode_graph_url, show_graph. The description an agent follows changed; the callable contract may not have.

15 Sep 2026v1.0.0first recorded contract

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Status badge

Status for a README, from the last probe — cached an hour, so up to seven hours behind the endpoint. Links back to this page.

MCP status badge for Equation.io
[![MCP status](https://mcpi.app/servers/equation-io/badge.svg)](https://mcpi.app/servers/equation-io)