Semiotic

io.github.nteract/semiotic · v3.13.0

New (7 days)

Measured by MCP Station

Last check	Reachable
Checked at	—
Check success 7 / 30 days	—
First-try success 30 days	—
Median response	—
Lookups 30 days	—
Authentication	No auth
MCP version	2025-06-18
Rank score	—
Declared risk	Read-only (all tools declare readOnlyHint)
Capabilities declared	completions, prompts, resources, tools
Tool definitions	5 tools · with description 100% · input schema is an object 100% · read/destructive hints 100%

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

streamable-http · https://semiotic-mcp-server-481507046413.us-west1.run.app/mcp

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

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

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.

Repository · Website · JSON · Text for agents · Registry updated 2026-10-22