the402 endpoint detail

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x402-filings.datalayer.workers.dev sec institutional-holdings

https://x402-filings.datalayer.workers.dev/v1/sec/institutional-holdings

answers 402

What an institutional manager actually changed last quarter. Reads 13F-HR filings for a CIK, parses the information table, aggregates by issuer and diffs consecutive quarters into opened, closed, increased and decreased positions with dollar values and portfolio weights. The diff is the signal — a holdings snapshot on its own says nothing about intent.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.03
Network
base
Pay to
0x917e635b83F0dd7e8172c55EC4EEbb28B734cA85
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
16 ms
Payment options
1 usable of 1
Last checked
2026-09-06T01:14:42.977Z (33d ago)
Category
data

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fx402-filings.datalayer.workers.dev%2Fv1%2Fsec%2Finstitutional-holdings"