Semiotic MCP server

Semiotic is an MCP server with 5 tools an agent can call, among them auditChart, createChart, explainChart. It answers at https://semiotic-mcp-server-481507046413.us-west1.run.app/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 6 of 6 times since 11 September 2026; the last check, on 22 October 2026, succeeded.

Status

Answering

Tools

Reliability

6 of 6 checks

Response time

245 ms

Transport

streamable HTTP

Last checked

22 October 2026

Verified React chart generation: select, validate, repair, render, and inspect charts through MCP.

Description as the publisher wrote it.

The 5 tools Semiotic offers

Tool	What it does
`auditChart`	Run design diagnostics plus accessibility and mobile audits, returning prioritized structured findings. Inputs: component, props, viewportWidth
`createChart`	Select, validate, diagnose, render, and prove a static-data Semiotic chart. This is the default public workflow. Inputs: data, intent, audience, identifiers, fieldRoles, component
`explainChart`	Return reader grounding: chart description, communicative intent, and navigable data structure. Inputs: component, props
`getChartSchema`	Return canonical Semiotic prop-schema guidance for code editing and advanced configuration. Inputs: component
`improveChart`	Diagnose a chart configuration, assess data fit, and propose repairs or variants. Inputs: component, props, data, intent, identifiers, fieldRoles

Add Semiotic to your AI client

Every block below points at https://semiotic-mcp-server-481507046413.us-west1.run.app/mcp. Pick your client and copy.

Claude Code: one command in your terminal

claude mcp add --transport http semiotic https://semiotic-mcp-server-481507046413.us-west1.run.app/mcp

Claude Desktop: claude_desktop_config.json

{
  "mcpServers": {
    "semiotic": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://semiotic-mcp-server-481507046413.us-west1.run.app/mcp"]
    }
  }
}

Cursor: ~/.cursor/mcp.json, or .cursor/mcp.json in a project

{
  "mcpServers": {
    "semiotic": {
      "url": "https://semiotic-mcp-server-481507046413.us-west1.run.app/mcp"
    }
  }
}

VS Code and GitHub Copilot: .vscode/mcp.json

{
  "servers": {
    "semiotic": {
      "type": "http",
      "url": "https://semiotic-mcp-server-481507046413.us-west1.run.app/mcp"
    }
  }
}

Zed: Zed settings.json

{
  "context_servers": {
    "semiotic": {
      "url": "https://semiotic-mcp-server-481507046413.us-west1.run.app/mcp"
    }
  }
}

Windsurf: ~/.codeium/mcp_config.json

{
  "mcpServers": {
    "semiotic": {
      "serverUrl": "https://semiotic-mcp-server-481507046413.us-west1.run.app/mcp"
    }
  }
}

JetBrains AI Assistant: Settings, Tools, AI Assistant, MCP, New MCP Server, as JSON

{
  "mcpServers": {
    "semiotic": {
      "url": "https://semiotic-mcp-server-481507046413.us-west1.run.app/mcp"
    }
  }
}

Continue: .continue/mcpServers/neuronto.yaml

name: Semiotic
version: 0.0.1
schema: v1
mcpServers:
  - name: Semiotic
    type: streamable-http
    url: https://semiotic-mcp-server-481507046413.us-west1.run.app/mcp

Gemini CLI: ~/.gemini/settings.json

{
  "mcpServers": {
    "semiotic": {
      "httpUrl": "https://semiotic-mcp-server-481507046413.us-west1.run.app/mcp"
    }
  }
}

Codex CLI: MCP server config

{
  "mcpServers": {
    "semiotic": {
      "type": "http",
      "url": "https://semiotic-mcp-server-481507046413.us-west1.run.app/mcp"
    }
  }
}

Warp: MCP servers, + Add, paste JSON

{
  "mcpServers": {
    "semiotic": {
      "url": "https://semiotic-mcp-server-481507046413.us-west1.run.app/mcp"
    }
  }
}

Goose: a one-click extension link

goose://extension?url=https%3A%2F%2Fsemiotic-mcp-server-481507046413.us-west1.run.app%2Fmcp&type=streamable_http&id=semiotic&name=Semiotic

Is Semiotic up right now?

It answered our last check on 22 October 2026 in 245 ms. Over 6 checks since 11 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.

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Questions about Semiotic

How many tools does Semiotic have?

5, as returned by the server's own tools/list on 17 September 2026: auditChart, createChart, explainChart, getChartSchema, improveChart.

Is Semiotic down?

It answered our last check on 22 October 2026 in 245 ms. Over 6 checks since 11 September 2026 it answered 6.

How do I add Semiotic to Cursor?

Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://semiotic-mcp-server-481507046413.us-west1.run.app/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.

Does Semiotic need an API key?

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.

Where this comes from

Publisher: io.github.nteract. Endpoint host: semiotic-mcp-server-481507046413.us-west1.run.app. ARD identifier: urn:air:io.github.nteract:mcp:semiotic. First indexed 10 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.

Is this your server? Get a message the day it stops answering or its tools change: monitoring, 14 days free. Or claim the domain to manage how it is listed.