MCP server

Semiotic

io.github.nteract/semiotic

Checked 25 Oct 2026, 20:29 UTC · Connected to it and listed its tools

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

Website Source

At a glance

Type

MCP server

Publisher

Not verified

Status

Working at last check

Tools

5

Token cost

About 1,128 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

25 Oct 2026, 20:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

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

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.semiotic]
url = "https://semiotic-mcp-server-481507046413.us-west1.run.app/mcp"

Gemini CLI

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

Cursor

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

VS Code

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

Antigravity

agy mcp add semiotic https://semiotic-mcp-server-481507046413.us-west1.run.app/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"semiotic","server_url":"https://semiotic-mcp-server-481507046413.us-west1.run.app/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"semiotic","server_url":"https://semiotic-mcp-server-481507046413.us-west1.run.app/mcp"}

Tools

• auditChart ~130 tokens
  Run design diagnostics plus accessibility and mobile audits, returning prioritized structured findings.
• createChart ~474 tokens
  Select, validate, diagnose, render, and prove a static-data Semiotic chart. This is the default public workflow.
• explainChart ~110 tokens
  Return reader grounding: chart description, communicative intent, and navigable data structure.
• getChartSchema ~76 tokens
  Return canonical Semiotic prop-schema guidance for code editing and advanced configuration.
• improveChart ~338 tokens
  Diagnose a chart configuration, assess data fit, and propose repairs or variants.

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• GitHub tools
• GitHub and code hosting

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