HTML table to JSON/CSV

Extract a <table> from an HTML string as JSON rows (header-keyed) or CSV. Useful for prices, schedules, sports stats, or anything an agent has already fetched as HTML. If multiple tables match, the first is used.

Input

Field	Type	Description
html *	string	Raw HTML string containing the table (max 5MB)
selector	string	CSS selector for the table (default "table")
format	string	"json" (default — rows as header-keyed objects) | "csv"

Example output

{
  "rows": [
    {
      "City": "NYC",
      "Pop": "8.3M"
    },
    {
      "City": "LA",
      "Pop": "3.9M"
    }
  ],
  "headers": [
    "City",
    "Pop"
  ],
  "format": "json",
  "count": 2
}

Try it — see the 402 challenge (free)

curl -i -X POST https://agent402.tools/api/html-table \
  -H "Content-Type: application/json" \
  -d '{"html":"<table><thead><tr><th>City</th><th>Pop</th></tr></thead><tbody><tr><td>NYC</td><td>8.3M</td></tr><tr><td>LA</td><td>3.9M</td></tr></tbody></table>","format":"json"}'

The response is HTTP 402 Payment Required with exact payment requirements. Any x402 v2 client pays automatically and retries:

Paid call (JavaScript agent)

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client();
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/html-table", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "html": "<table><thead><tr><th>City</th><th>Pop</th></tr></thead><tbody><tr><td>NYC</td><td>8.3M</td></tr><tr><td>LA</td><td>3.9M</td></tr></tbody></table>",
    "format": "json"
  }),
});

No wallet? Pay with compute

This is a pure-CPU tool, so an agent without a wallet can pay with proof-of-work instead of USDC: fetch a challenge, solve the sha256 puzzle (16 leading zero bits — a fraction of a second of CPU, no money, no AI tokens), and resend with the X-Pow-Solution header.

import { createHash } from "node:crypto";
const lz = (b) => { let t = 0; for (const x of b) { if (!x) { t += 8; continue; } t += Math.clz32(x) - 24; break; } return t; };
const c = await (await fetch("https://agent402.tools/api/pow/challenge?slug=html-table")).json();
let n = 0;
while (lz(createHash("sha256").update(c.challenge + ":" + n).digest()) < c.difficulty) n++;
await fetch("https://agent402.tools/api/html-table", { method: "POST", headers: { "X-Pow-Solution": c.token + ":" + n, "Content-Type": "application/json" }, body: JSON.stringify({"html":"
City
Pop
NYC
8.3M
LA
3.9M
","format":"json"}) });

Part of these workflows

This tool is one step in a curated multi-tool workflow — agents can fetch the whole sequence as an MCP prompt or call https://agent402.tools/api/skill-packs/{slug}/prompt.

• Structured scrape — Pull structured data out of any web page deterministically — articles to clean text, tables to JSON rows, specific elements via CSS selector — without writing regex against raw HTML.

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