Your agent asks about a public company. The value comes back with the filing that reported it.
The sandbox key works on Amprius Technologies (AMPX). No card is required.
Many sources in, one format out, and every value keeps its way back.
Source: United States Securities and Exchange Commission EDGAR · What it covers · Docs
The request behind that answer. The response is trimmed to the fields used here.
$ curl "https://api.sourcekeel.com/v1/companies/AMPX/facts?tags=Revenues" \
-H "Authorization: Bearer $SOURCEKEEL_API_KEY"
{
"canonical_tag": "Revenues",
"raw_tag": "us-gaap:Revenues",
"value": 28536000,
"unit": "USD",
"period_start": "2026-01-01",
"period_end": "2026-03-31",
"source": "SEC EDGAR",
"form": "10-Q",
"filing_date": "2026-05-07",
"accession": "0001899287-26-000045"
}The canonical_tag is the name SourceKeel uses for the line. The raw_tag is what the filing called it. The accession number identifies the filing, and a sandbox key can make this call as soon as you sign up.
The response carries the value and the accession number of the filing that reported it.
GET /v1/companies/AMPX/facts?tags=RevenuesOne request returns that filing's documents. Open the 10-Q and compare.
GET /v1/filings/0001899287-26-000045/documentsIf the filing shows something else, report it with the value you got and the one you expected.
POST /v1/correctionsFollow the report until it has an answer.
GET /v1/corrections/{id}POST /v1/corrections
{
"subject": "AMPX",
"field": "Revenues",
"period_end": "2026-03-31",
"returned_value": "28536000",
"expected_value": "(the figure the filing shows)",
"source_link": "https://www.sec.gov/Archives/edgar/data/1899287/000189928726000045/ampx-20260331.htm"
}
"status": "received" then "reviewing" (We are checking it against the filing)
then "confirmed", "fixed" or "not_an_error"GET /v1/companies/AMPX/facts?tags=RevenuesApplied Digital reported current assets at May 31, 2025 as $430,593,000. A later 10-Q reports $132,800,000 for the same date. The API returns both values with both filings.
$ curl "https://api.sourcekeel.com/v1/companies/APLD/amendment-diffs" \
-H "Authorization: Bearer $SOURCEKEEL_API_KEY"
{
"relationship_type": "subsequent_filing_revision",
"form": "10-Q",
"accession": "0001144879-26-000030",
"prior_accessions": ["0001144879-26-000006"],
"affected_periods": [{ "period_end": "2025-05-31" }],
"reported_value_changes": [{
"metric_key": "current_assets",
"original": { "accession": "0001144879-26-000006", "value": 430593000 },
"current": { "accession": "0001144879-26-000030", "value": 132800000 }
}]
}Trimmed. Applied Digital (APLD) is not in the sandbox, which serves AMPX.
I built SourceKeel so that a wrong number is quick to find and quick to fix. Read my letter on why it exists.Ola, Founder
Call the HTTP API, use the command line tool, or connect an agent through the MCP server. They all read the same data with the same key.
export SOURCEKEEL_API_KEY=sk_sandbox_xxx # sk_live_xxx on a paid plan
sourcekeelctl mcp stdioThe free sandbox key works on every endpoint for Amprius Technologies. It needs no card.
Get a free sandbox key See pricing