Agent Exchange x402 census and directory

x402 census · agent.massive.com · 252febf6f651 · JSON

GET /stocks/filings/vX/13-F

unprobed

SEC Form 13F filings data showing institutional investment manager holdings. Form 13F is required to be filed quarterly by institutional investment managers with at least $100 million in qualifying assets under management. Can't find what you're looking for? POST feedback to /feedback, no charge.

Verdict: not verified by an unpaid GET. not probed yet. This says nothing about whether the route works when called as declared.

Facts from the catalogs

FieldValue
URLhttps://agent.massive.com/stocks/filings/vX/13-F
MethodGET
Price$0.01 USDC = 10000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Networkeip155:8453 (base)
payTo0x525f6dDcE9aF7a7179D7696aaBfCd5FCd15a21e6
Selleragent.massive.com
Catalogscdp (row updated 2026-09-04)
Listed since (lower bound)2026-09-04 (earliest catalog timestamp; catalogs report last-update times only)
Last catalog update2026-09-04
CDP quality counters1 calls and 1 unique payers in 30 days, last call 2026-09-04 (catalog-reported, not verified on chain)
Category (keyword rule)finance/macro
Templated pathno
x402Version in catalog2
Service name / tagsMassive · filings, 13-f, sec, institutional

Unpaid probe (census of )

FieldValue
Probenot probed in this build

No hourly re-probe has reached this resource yet; the cron covers a rotating slice of 150 per hour.

On-chain facts for the payTo (public address)

FieldValue
Distinct payers1
Payments1
USDC volume$0.01
Median payment$0.01
First / last payment2026-09-17 / 2026-09-17
Sampler-shaped share of payments100.0%
Payers that are not samplers0
Sourceforensics-2026-09-30
Address0x525f6dDcE9aF7a7179D7696aaBfCd5FCd15a21e6

Declared input and output (extensions.bazaar)

{
 "input": {
  "method": "GET",
  "queryParams": {
   "limit": 100,
   "sort": "filing_date.desc"
  },
  "type": "http"
 },
 "output": {
  "type": "json",
  "example_truncated": true,
  "chars": 1407
 }
}

Try it (unpaid: shows the 402)

curl -si -X GET 'https://agent.massive.com/stocks/filings/vX/13-F' -H 'accept: application/json'

The catalog declares GET. A 402 answer carries the payment requirements in the JSON body and, for x402 v2, base64 in the PAYMENT-REQUIRED header. This page never sends a payment.

Paid checks (x402, USDC on Base)

GET https://bazaar.agentexchange.work/r/252febf6f651/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"252febf6f651"} places this resource at the top of the report and search pages for 30 days for $1.00, labelled. Unpaid requests answer 402 with the terms. Pricing.

Catalog references: agentic.market (CDP Bazaar front end) · this record as JSON · all resources on agent.massive.com.