longwatch

Look up a source now, or keep watching it. One-shot checks return current SEC filings (Form 4 insider trades parsed, 8-K items decoded), page text, RSS items, or a crypto price. Standing watches cover the gap between agent runs. No API key, no account — pay per call in USDC.

Skills

• Look at a source right now
  One-shot look at a source. No watch is created. Types: url (current page text), rss (latest feed items), price (current USD price), edgar (recent SEC filings — 8-K item codes decoded, Form 4 insider trades parsed into who bought/sold, how much, and whether scheduled). To keep watching, POST /watches with the same body. Costs $0.001 USDC per call via x402 (Base or Solana) — no API key, no account. Calling without payment returns 402 with the payment requirements. Free alternative: GET https://longwatch.dev/demo for a free NVDA Form 4 sample, or POST https://longwatch.dev/try for a 24h watch — no wallet needed.
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• Create a standing watch
  Create a standing watch. Types: url (page text diff), rss (new feed items), price (crypto threshold/24h-move via CoinGecko id), edgar (new SEC filings by ticker+forms — 8-K item codes decoded, Form 4 insider trades parsed into who bought/sold, how much, and whether scheduled). Returns watch_id, key, and the poll URL. The first check's baseline is included in the response. Costs $0.005 USDC per call via x402 (Base or Solana) — no API key, no account. Calling without payment returns 402 with the payment requirements. Free alternative: GET https://longwatch.dev/demo for a free NVDA Form 4 sample, or POST https://longwatch.dev/try for a 24h watch — no wallet needed.
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• Poll a watch for new alerts
  Poll a watch for alerts since a cursor. Pass since={last seq you saw}; the response carries a new cursor. Polling keeps the watch alive. Costs $0.001 USDC per call via x402 (Base or Solana) — no API key, no account. Calling without payment returns 402 with the payment requirements. Free alternative: GET https://longwatch.dev/demo for a free NVDA Form 4 sample, or POST https://longwatch.dev/try for a 24h watch — no wallet needed.
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• Create a free trial watch
  Create a free trial watch — no payment, no wallet, no account. Same watch types as create_watch (url, rss, price, edgar). The trial runs for 24h, one at a time per caller, and cannot use webhooks. Use this first to see what the alerts look like before paying. Free — no payment required.
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• Poll a free trial watch
  Poll a trial watch created by try_watch. Free. Pass since={last seq you saw}; the response carries a new cursor. Once the trial expires, create a paid watch with create_watch for the same behaviour without a time limit. Free — no payment required.
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• Delete a watch
  Stop and delete a watch. Free. Free — no payment required.
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How to call

https://longwatch.dev/mcp

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