Extract fields from text as JSON

$0.003 per call · failed calls are never charged · no account or API key needed

Pull named fields out of unstructured text (emails, invoices, listings, bios) and get them back as a JSON object, with null for anything not present. Use to turn messy text into structured data for an agent.

Run it free (25 free calls) Buy credits by card (from $5) Example result (JSON)

Inputs

NameTypeDescription
text (required)stringSource text, up to 12,000 characters
fields (required)stringComma-separated field names to extract (1-30)

Request

Over HTTP, with a card key from /credits:

curl -H "Authorization: Bearer adt_…" "https://agent-data-tools.revmesh2074.workers.dev/ai/extract-json?text=Invoice%201043%20from%20Acme%20AB%2C%20due%202026-11-01%2C%20total%202%20450%20SEK%20incl.%20VAT.&fields=invoice_number%2Ccompany%2Cdue_date%2Ctotal%2Ccurrency"

Or one of your 25 free calls, no key:

curl "https://agent-data-tools.revmesh2074.workers.dev/ai/extract-json?text=Invoice%201043%20from%20Acme%20AB%2C%20due%202026-11-01%2C%20total%202%20450%20SEK%20incl.%20VAT.&fields=invoice_number%2Ccompany%2Cdue_date%2Ctotal%2Ccurrency&trial=1"

Without a key, the same URL answers 402 Payment Required with x402 and MPP terms, so an agent with a wallet pays per call in USDC (Base, Polygon, Arbitrum, Monad, World Chain or Tempo) and retries.

Example result

{
  "data": {
    "invoice_number": "1043",
    "company": "Acme AB",
    "due_date": "2026-11-01",
    "total": 2450,
    "currency": "SEK"
  },
  "missing": [],
  "model": "@cf/meta/llama-3.1-8b-instruct-fp8"
}

From an AI agent (MCP)

Add the MCP server to Claude, Cursor or any MCP client. This tool is ai_extract_json, and the first 25 successful calls are free:

https://agent-data-tools.revmesh2074.workers.dev/mcp

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