Schema library finance

Return a crypto-asset record from a public page.

Pass this JSON Schema and a public source URL to/extract/json. Normalize public asset metadata. Check the official source before acting on it.

Use this schema The JSON file

tabstack.ai/pricing

TEXT

MARKDOWN

LINKS

extract.tsTypeScript

const res = await client.extract.json({
  url: 'https://example.com/pricing',
  json_schema: {
    type: 'object',
    properties: {
      plan: { type: 'string' },
      price: { type: 'number' },
    },
  },
})

res = client.extract.json(
    url='https://example.com/pricing',
    json_schema={
        'type': 'object',
        'properties': {
            'plan': {'type': 'string'},
            'price': {'type': 'number'},
        },
    },
)

tabstack extract json https://example.com/pricing \
  --schema '{"type":"object","properties":{"plan":{"type":"string"},"price":{"type":"number"}}}'

What it captures

Fields in this crypto-asset record.

Snapshot of market data for a cryptocurrency or digital asset.

Field	Type	What it holds
`token_name`	string, required	Full name of the token or cryptocurrency.
`token_symbol`	string, required	Ticker symbol of the token (e.g., BTC, ETH).
`coingecko_id`	string	CoinGecko identifier for the asset.
`contract_address`	string	Smart contract address for the token.
`blockchain`	string	Blockchain network where the token resides.
`price_usd`	number, required	Current price in USD.
`price_change_24h_pct`	number	Price change percentage over the last 24 hours.
`price_change_7d_pct`	number	Price change percentage over the last 7 days.
`market_cap_usd`	number	Market capitalization in USD.
`market_cap_rank`	number	Global market cap rank.
`volume_24h_usd`	number	24-hour trading volume in USD.
`circulating_supply`	number	Number of tokens currently in circulation.
`total_supply`	number	Total token supply.
`max_supply`	number	Maximum possible token supply.
`fully_diluted_valuation_usd`	number	Fully diluted valuation (FDV) in USD.
`ath_usd`	number	All-time high price in USD.
`ath_date`	string	Date of all-time high price.
`category`	string	Asset category (e.g., DeFi, Layer 1, stablecoin).
`snapshot_at`	string, required	ISO 8601 timestamp of the price snapshot.
`page_title`	string	Title of the source page. Tabstack auto-fills this from page metadata when left empty.
`favicon`	string	Favicon URL of the source page. Tabstack auto-fills this from page metadata when left empty.

Example

Inspect and validate the response shape.

The example below is generated from the schema to demonstrate its structure. Edit the object or paste a real response to validate it in your browser.

What it checks

Pass or fail, and the first reason why.

Whether the text parses as JSON, whether the top level is an object, and whether each field the schema requires is present at the declared type. A null is allowed anywhere. Every key you ask for is present. A field the page does not state can come back null, empty, a placeholder number, or a guessed value. Validate values, not just keys.

Example data, not a live response.

Usage

Send the schema with your source URL.

The schema travels with the request rather than living on your account, so the same call can send a trimmed version for one page and the full one for another. Every key you ask for is present. A field the page does not state can come back null, empty, a placeholder number, or a guessed value. Validate values, not just keys.

crypto.tsTypeScript

import schema from './crypto-asset.json'

const res = await client.extract.json({
  url: 'https://example.com/pricing',
  json_schema: schema,
})

tabstack extract json 'https://example.com/pricing' \
  --schema @./crypto-asset.json

Adaptation

Make the schema match your application.

The schema is a starting point, not a guarantee that every source page contains every field. Three things are worth doing before you write one into your system, and the schema-authoring guide covers the rest.

Remove what you do not need

A shorter schema is a smaller response and fewer fields to handle.

Describe the ambiguous ones

A description tells Extract what to look for when a label could mean two things.

Validate before you store

Check the returned object against the schema rather than trusting it.

Related schemas

Other schemas in this category.

Same category: alternative asset listing.
Same category: angel & seed deal.
Same category: public company filing.
The job rather than the object: the Extract API.