Render a chart image for an MCP response

Use calculate_chart for calculation plus automatic rendering, or render_chart after a projection has already been calculated. Launch and image pages keep their short-lived token in a URL fragment, remove it before rendering, and exchange it only in a same-origin Authorization header.

Request and response shapes

Input shape

{ render?: { includeLaunchUrl?: boolean; includePngUrl?: boolean; theme?: 'auto' | 'classic' | 'dark' } }

Output shape

{ render: { launchUrl: string; pngUrl?: string; tokenExpiresAt: string } }

Examples

Request example

{
  "dateTimeUtc": "2026-07-09T18:00:00Z",
  "latitude": 39.7392,
  "longitude": -104.9903,
  "render": {
    "includeLaunchUrl": true,
    "theme": "dark"
  }
}

Response example

{
  "render": {
    "launchUrl": "https://mcp.astrotechne.com/chart/play",
    "tokenExpiresAt": "2026-07-09T18:15:00Z"
  }
}

Common validation errors

Expired or tampered render tokens fail closed.
Query-string render tokens are not accepted.

Render a chart image for an MCP response

Request and response shapes

Input shape

{ render?: { includeLaunchUrl?: boolean; includePngUrl?: boolean; theme?: 'auto' | 'classic' | 'dark' } }

Output shape

{ render: { launchUrl: string; pngUrl?: string; tokenExpiresAt: string } }

Examples

Request example

{
  "dateTimeUtc": "2026-07-09T18:00:00Z",
  "latitude": 39.7392,
  "longitude": -104.9903,
  "render": {
    "includeLaunchUrl": true,
    "theme": "dark"
  }
}

Response example

{
  "render": {
    "launchUrl": "https://mcp.astrotechne.com/chart/play",
    "tokenExpiresAt": "2026-07-09T18:15:00Z"
  }
}

Common validation errors

Expired or tampered render tokens fail closed.
Query-string render tokens are not accepted.

Render a chart image for an MCP response

Request and response shapes

Input shape

Output shape

Examples

Request example

Response example

Common validation errors

Related questions

Render a chart image for an MCP response

Request and response shapes

Input shape

Output shape

Examples

Request example

Response example

Common validation errors

Related questions