Semiotic

Measured conclusion: Deep-tested. L2 outcome: tools_ok.

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

Add to your agent

Copy this into your MCP client config:

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

Measured tools (5)

• createChart read-only

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

  Parameters:

  • data (required) — array
  • props — object — Optional props to merge over the selected chart recipe.
  • theme — object
  • intent
  • audience — object
  • component — string — Optional chart preference; the fit-ranked result remains authoritative.
  • fieldRoles — object — Per-field semantic or exact encoding-role hints used before chart ranking.
  • identifiers — array — Fields that identify records and must not be used as visual encodings or measures.

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• improveChart read-only

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

  Parameters:

  • component (required) — string
  • props (required) — object
  • data — array
  • intent
  • fieldRoles — object — Per-field semantic or exact encoding-role hints used before chart ranking.
  • identifiers — array — Fields that identify records and must not be used as visual encodings or measures.

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• explainChart read-only

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

  Parameters:

  • component (required) — string
  • props (required) — object

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• auditChart read-only

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

  Parameters:

  • component (required) — string
  • props (required) — object
  • viewportWidth — integer

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• getChartSchema read-only

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

  Parameters:

  • component — string

  Hints: read-only yes · destructive no · idempotent yes · open-world no

Publisher website Repository

Measured by MCPYP probing. Untested fields are omitted, never estimated. Listing is always free; MCPYP never proxies calls or stores user tokens.