JSON

client.generate.json(, ?): GenerateJsonResponse

POST/generate/json

Fetches URL content, extracts data, and transforms it using AI based on custom instructions. Use this to generate new content, summaries, or restructured data.

ParametersExpand Collapse

body: GenerateJsonParams { instructions, json_schema, url, 3 more }

instructions: string

Instructions describing how to transform the data

json_schema: unknown

JSON schema defining the structure of the transformed output

url: string

URL to fetch content from

formaturi

effort?: "min" | "standard" | "max"

Fetch effort level controlling speed vs. capability tradeoff. "min": fastest, no fallback (1-5s). "standard": balanced with enhanced reliability (default, 3-15s). "max": full browser rendering for JS-heavy sites (15-60s).

Accepts one of the following:

"min"

"standard"

"max"

geo_target?: GeoTarget

Optional geotargeting parameters for proxy requests

country?: string

Country code using ISO 3166-1 alpha-2 standard (2 letters, e.g., "US", "GB", "JP"). See: https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2

nocache?: boolean

Bypass cache and force fresh data retrieval

ReturnsExpand Collapse

GenerateJsonResponse = Record<string, unknown>

JSON

import Tabstack from '@tabstack/sdk';

const client = new Tabstack({
  apiKey: process.env['TABSTACK_API_KEY'], // This is the default and can be omitted
});

const response = await client.generate.json({
  instructions:
    "For each story, categorize it (tech/business/science/other) and write a one-sentence summary explaining what it's about in simple terms.",
  json_schema: {
    properties: {
      summaries: {
        items: {
          properties: {
            category: { description: 'Story category (tech/business/science/etc)', type: 'string' },
            summary: { description: 'One-sentence summary of the story', type: 'string' },
            title: { description: 'Story title', type: 'string' },
          },
          type: 'object',
        },
        type: 'array',
      },
    },
    type: 'object',
  },
  url: 'https://news.ycombinator.com',
});

console.log(response);

{
  "error": "invalid JSON request body"
}

{
  "error": "failed to fetch URL"
}

Returns Examples

{
  "error": "invalid JSON request body"
}

{
  "error": "failed to fetch URL"
}