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Developers

Everything on this site comes from public filings and reports. These feeds hand it back out as JSON so you can put it on your own page, in a spreadsheet, or in a bot. One rule: link back to marketclerk.com wherever it shows.

JSON feeds

/api/v1/insiders.json

country=US|CA · days=1–90 (7) · limit=1–200 (100)

Open-market insider buys and sells. US from SEC Form 4, Canada from SEDI. One row per transaction with role, shares, price, value.

/api/v1/congress.json

days=1–90 (30) · limit=1–200 (100)

STOCK Act trade disclosures by members of Congress: transaction and disclosure dates, ticker, type, amount range, and the source filing.

/api/v1/shorts.json

country=US|CA · limit=1–200 (100)

The latest short-interest report, largest positions first. US from FINRA’s biweekly file, Canada from CIRO. Carries the report date.

/api/v1/signals.json

days=1–90 (7)

Today’s Signals: the dated digest of threshold-crossing events we scored. Zero rows on a quiet day is the real answer.

/api/v1/stock/us/AAPL.json

market=us|ca · symbol

One ticker: quote, TTM figures from SEC XBRL, insider and Congress activity over 90 days, latest short interest, next earnings date.

Responses are cached for 15 minutes and sent with Access-Control-Allow-Origin: *, so browsers can fetch them directly. Please don’t poll faster than the cache. Values are numbers or null, never guesses.

{
  "as_of": "2026-09-06T13:00:00.000Z",
  "source": "https://marketclerk.com",
  "license": "CC BY 4.0. Link back to marketclerk.com when you republish.",
  "country": "US", "days": 7, "count": 1,
  "items": [{
    "date": "2026-09-03", "filed": "2026-09-05", "ticker": "NVDA", "country": "US",
    "issuer": "NVIDIA Corp", "insider": "Jane Example", "role": "Director",
    "direction": "BUY", "shares": 2500, "price": 118.4, "value": 296000,
    "url": "https://marketclerk.com/stock/us/NVDA/insider-trading"
  }]
}

Embeds

Two widgets built for an iframe. They carry our look, link back at the bottom, and never run script on your page.

Today’s Signals

<iframe src="https://marketclerk.com/embed/signals?days=7"
  width="100%" height="520" style="border:0" loading="lazy"
  title="Today’s Signals — Market Clerk"></iframe>

One ticker

<iframe src="https://marketclerk.com/embed/stock/us/AAPL"
  width="100%" height="220" style="border:0" loading="lazy"
  title="AAPL — Market Clerk"></iframe>

Share cards

Every stock, insider, politician, and day page carries its own 1200×630 image for links shared on X, Slack, iMessage, and LinkedIn. You can use them directly:

/og/stock/us/AAPL.png /og/today/2026-09-05.png

Terms

Data is republished from SEC EDGAR, FINRA, SEDI, CIRO, and STOCK Act disclosures, which are public. Our scores and signals are our own work and are licensed CC BY 4.0: use them, credit us with a link. Nothing here is investment advice. If you build something with it, tell us.