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100
MCP live MCP 2025-11-25 streamable-http

Semiotic

io.github.nteract/semiotic

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

Uptime
100.0%
1 direct probes · 30d
Response
2714ms
last probe
Tools
5
callable
Resources
8
readable
Prompts
2
available
Primary URL
https://semiotic-mcp-server-481507046413.us-west1.run.app/mcp

Tools · 5

createChart

Select, validate, diagnose, render, and prove a static-data Semiotic chart. This is the default public workflow.

improveChart

Diagnose a chart configuration, assess data fit, and propose repairs or variants.

explainChart

Return reader grounding: chart description, communicative intent, and navigable data structure.

auditChart

Run design diagnostics plus accessibility and mobile audits, returning prioritized structured findings.

getChartSchema

Return canonical Semiotic prop-schema guidance for code editing and advanced configuration.

Resources · 8

semiotic-build-info

Read-only deployment identity for this Semiotic MCP server.

semiotic://build-info
semiotic-schema

Machine-readable JSON schema for all Semiotic AI chart components.

semiotic://schema
semiotic-components

Renderable/browser-only component index with MCP categories.

semiotic://components
semiotic-surface-manifest

Generated inventory of schema components, AI exports, MCP renderability, tools, resources, and prompts.

semiotic://surface-manifest
semiotic-behavior-contracts

Agent-visible semantic rules for color precedence, required prop combinations, streaming refs, and renderability.

semiotic://behavior-contracts
semiotic-system-prompt

Compact implementation guidance for AI assistants building with Semiotic.

semiotic://system-prompt
semiotic-examples

On-demand copy-paste examples for common Semiotic chart data shapes.

semiotic://examples
semiotic-chatgpt-chart-widget

MCP Apps widget template for interactive Semiotic chart previews inside ChatGPT.

ui://semiotic/chart-widget.html

Prompts · 2

build-semiotic-chart

Workflow for choosing a chart, validating props, and rendering a preview.

debug-semiotic-chart

Workflow for diagnosing bad props, rendering failures, and chart-quality issues.

How to use

Add to your Claude Desktop / Cursor / Cline MCP config:

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