EDGAR Form 13F data set head (one table, bounded)

A bounded head of ONE table in a Form 13F data set, read with two byte-range requests against sec.gov (the archive's central directory plus the first 256 KB of the chosen table) so the multi-hundred-MB zip is never downloaded. Returns the archive's members with sizes, the table's columns and its first rows (1-200, default 25) as objects: SUMMARYPAGE (per filing: holdings count, total value, confidential-omission flag), SUBMISSION (accession, filer CIK, period, form), COVERPAGE (manager name and address, amendment flags), INFOTABLE (the holdings rows), OTHERMANAGER, OTHERMANAGER2, SIGNATURE. dataSet is an id from edgar-13f-datasets or latest. partial says whether the table was read in full.

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Input

Example output

{
  "dataSet": {
    "id": "01jun2026-31aug2026",
    "label": "2026 June July August 13F",
    "from": "2026-06-01",
    "to": "2026-08-31",
    "quarter": null,
    "url": "https://www.sec.gov/files/datastandardsinnovation/data/form-13f-data-sets/01jun2026-31aug2026_form13f.zip",
    "sizeMb": 96.05
  },
  "archiveBytes": 100719015,
  "zip64": false,
  "members": [
    {
      "name": "SUMMARYPAGE.tsv",
      "bytes": 382912,
      "compressedBytes": 126238,
      "method": "deflate"
    }
  ],
  "table": "SUMMARYPAGE",
  "file": "SUMMARYPAGE.tsv",
  "columns": [
    "ACCESSION_NUMBER",
    "OTHERINCLUDEDMANAGERSCOUNT",
    "TABLEENTRYTOTAL",
    "TABLEVALUETOTAL",
    "ISCONFIDENTIALOMITTED"
  ],
  "rowsReturned": 1,
  "rows": [
    {
      "ACCESSION_NUMBER": "0002134841-26-000139",
      "OTHERINCLUDEDMANAGERSCOUNT": "0",
      "TABLEENTRYTOTAL": "91",
      "TABLEVALUETOTAL": "147088596",
      "ISCONFIDENTIALOMITTED": "N"
    }
  ],
  "partial": false,
  "bytesRead": 192774,
  "note": "The whole SUMMARYPAGE.tsv member was read; rows is the first 5 of it.",
  "readmeUrl": "https://www.sec.gov/files/form_13f_readme.pdf",
  "source": "https://www.sec.gov/files/datastandardsinnovation/data/form-13f-data-sets/01jun2026-31aug2026_form13f.zip"
}

Try it - see the 402 challenge (free)

curl -i "https://agent402.tools/api/edgar-13f-dataset-head?dataSet=latest&table=SUMMARYPAGE&rows=5"

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";
import { metaTitle, metaDescription } from "./seo-meta.js";

const client = new x402Client();
client.setSpendControls?.(false); // @x402/core 2.23+ refuses anything over $1 or off the pegged-asset list by default; keep your own ceiling in code instead
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/edgar-13f-dataset-head?dataSet=latest&table=SUMMARYPAGE&rows=5");

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