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agent.massive.com vX 13-F
https://agent.massive.com/stocks/filings/vX/13-F
answers 402
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.
We sent a real
GET request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.01
- Network
- base
- Pay to
- 0x525f6dDcE9aF7a7179D7696aaBfCd5FCd15a21e6
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- GET
- Response latency
- 44 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-09-06T01:12:06.598Z (2h ago)
- Category
- data
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fagent.massive.com%2Fstocks%2Ffilings%2FvX%2F13-F"