Open Source Filings
GET api.osf-master-server.com/x402/sec/filings/:query
Why an agent can trust this route.
Sonar evidence is advisory. Paid delivery is shown as verified only when paid probes are available; otherwise route estimates use the unpaid handshake as a clearly labeled proxy.
Observed outcomes
Search US SEC filings by keyword: institutional holdings (13F), insider transactions (Form 4), 8-K/10-K/10-Q filings, XBRL financials, full-text EFTS hits, litigation and administrative proceedings. Returns filer or company, form type, filing date, and a provenance URL per match. For financial research, compliance, and due-diligence agents.
Resource: api.osf-master-server.com/x402/sec/filings/:query
Network: eip155:8453 · Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 · Pay to: 0x72f62dE8b70d6CFa8Cc2dF6f21F243f289F3396c
Payment methods: — · Last validation: 2026-09-14 12:11:24.507+00
{
"input": {
"type": "http",
"method": "GET",
"pathParams": {
"query": ":query"
},
"queryParams": {
"format": "json"
}
},
"output": {
"type": "json",
"example": {
"result": "MATCHES_FOUND",
"matches": [
{
"source": "SEC_13F_HOLDINGS",
"form_type": "13F-HR",
"record_id": 12345,
"filing_date": "2026-05-15",
"company_or_filer": "BERKSHIRE HATHAWAY INC"
}
],
"match_count": 2,
"search_evidence": {
"scan": {
"matches_omitted": 25,
"candidates_examined": 35,
"candidate_set_complete": true
},
"_about": "Proof of work, on EVERY result including NO_MATCH: the terms actually searched, how many records were in scope per source, how fresh they are, whether the scan completed or was truncated, and on an empty result the per-term record counts plus a known-good control query re-measured live in the same request. Numbers shown are illustrative.",
"corpus": {
"records_in_scope": 1558599,
"newest_record_ingested_utc": "2026-08-01T15:47:55Z"
},
"result_confidence": "matches_found"
}
}
},
"paymentRequirements": [
{
"raw": {
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x72f62dE8b70d6CFa8Cc2dF6f21F243f289F3396c",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"payTo": "0x72f62dE8b70d6CFa8Cc2dF6f21F243f289F3396c",
"scheme": "exact",
"network": "eip155:8453",
"amountAtomic": "50000"
}
]
}Source catalog records are retained separately from live endpoint observations. Sonar score, uptime, and latency are advisory metrics. CDP indexing is not inferred from validation.