Longwatch

dev.coinop由 coinop.dev 發布v1.0.1更新於 Oct 24, 2026

You are ephemeral; this remembers. Persist watch_id+key; poll later for what you missed.

已驗證Streamable HTTP可網頁執行網頁搜尋與抓取金融安全與監控

概覽

AI 產生的概覽

Longwatch 是遠端 MCP 伺服器,讓助理檢查網頁、RSS 來源、加密貨幣價格、SEC 文件與 x402 端點,並持續監看這些來源的變化。

可以做什麼
檢查網頁、RSS/Atom 來源、加密貨幣價格、SEC 文件與內部人交易,並探測 x402 端點的付款挑戰,可作單次快照或門檻判斷。對同類來源建立持續監看,網頁變動時回報新增與移除的文字,訂閱來源則每則新內容提醒一次。用游標輪詢提醒,只取回上次執行後發生的變化,完成後可刪除監看。可先建立免費 24 小時試用監看,並另外輪詢試用結果。
適用情境
當助理需要在多次執行之間監看某個來源——網頁改動、訂閱來源新項目、價格突破門檻、新的 SEC 文件或內部人交易——並只回報變化時使用。單次檢查工具適合單一工作階段的查詢。
執行需求
遠端 streamable HTTP 端點 longwatch.dev;未宣告帳號、API 金鑰或標頭。付費呼叫透過 x402 在 Base 上以 USDC 計費,因此付費工具需要能進行 x402 付款的錢包;未付款呼叫會回傳 HTTP 402 及付款要求。提供免費試用監看及免費輪詢試用。
安裝前請注意
多數檢查與監看工具按次收取 USDC(0.001 或 0.005),付費監看在包含的 7 天後需續費,助理可能因此花費真實資金。監看保存在伺服器端,需保存 watch_id 和 key,並於之後刪除。試用監看僅 24 小時、一次只能一個,且不能使用 webhook。

安裝

在 SourceWeft 中

  1. 開啟 儀表板中的 Longwatch,將其新增到工作區。
  2. 為需要使用其工具的對話啟用該服務。

Web executable,透過 Streamable HTTP。 遠端服務在工作區中設定後即可從網頁執行環境執行。

交給代理程式安裝

把這段提示詞貼上到 Claude Code、Codex、Cursor 等代理程式,或 SourceWeft 對話中。代理程式會讀取該伺服器的安裝指南,先向你展示發布者、端點和登入方式,經你同意後再把它新增到你的客戶端。金鑰不會寫進任何命令。

閱讀 https://sourceweft.com/mcp/dev.coinop%2Flongwatch/install.md,並按其中說明把這個 MCP 伺服器接入我的客戶端。修改任何設定之前,先告訴我它的發布者、端點和登入方式,等我確認。不要把 API 金鑰寫進命令或我會提交的檔案;問我金鑰應從哪裡取得。

檢視代理程式所依據的安裝指南

其他 MCP 客戶端

把它新增到你客戶端的 mcpServers 設定中。

{
  "mcpServers": {
    "longwatch": {
      "type": "http",
      "url": "https://longwatch.dev/mcp"
    }
  }
}

工具

18

check_now

Look at a source right now

This-session snapshot only — no watch, no cursor. Use when you will not come back. Required by type: url/rss/x402 need url; price needs coin plus above, below, or move_pct_24h; edgar needs ticker or cik. 8-K items are decoded, Form 4 trades parsed, and x402 probes validate the unpaid 402 challenge without sending payment. If the job spans runs, create_watch instead and persist watch_id + key. Costs $0.001 USDC per call via x402 (Base) — 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.

輸入參數cikurlbodycointype必填abovebelowformsmethodtickermove_pct_24hexpected_scheme另有 2 個

create_watch

Create a standing watch

Keep watching a source between agent runs and alert when it changes. Persist watch_id and key; later poll_alerts with since=<last cursor> returns only what you missed. Required by type: url/rss/x402 need url; price needs coin plus a threshold; edgar needs ticker or cik. Create includes the baseline and 7 days of polling. Costs $0.005 USDC per call via x402 (Base) — 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.

輸入參數cikurlbodycointype必填abovebelowformsmethodtickerwebhookmove_pct_24h另有 4 個

check_web_page

Read a public web page now

Fetch a public web page now and return normalized text metadata. Use for a one-session lookup. Costs $0.001 USDC per call via x402 (Base) — 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.

輸入參數url必填

watch_web_page

Watch a web page for text changes

Monitor a public web page between agent runs and alert with added and removed text when it changes. Includes 7 days of polling. Costs $0.005 USDC per call via x402 (Base) — 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.

輸入參數url必填webhookidempotency_key

check_rss_feed

Read an RSS feed now

Read the latest items from a public RSS or Atom feed now. Use for a one-session lookup. Costs $0.001 USDC per call via x402 (Base) — 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.

輸入參數url必填

watch_rss_feed

Watch an RSS feed for new items

Monitor an RSS or Atom feed between agent runs and alert once per new item. Includes 7 days of polling. Costs $0.005 USDC per call via x402 (Base) — 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.

輸入參數url必填webhookidempotency_key

check_crypto_price

Check a crypto price threshold now

Check a CoinGecko asset price and whether it currently meets a USD threshold or 24-hour move condition. Costs $0.001 USDC per call via x402 (Base) — 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.

輸入參數coin必填abovebelowmove_pct_24h

watch_crypto_price

Watch a crypto price threshold

Monitor a crypto price between agent runs and alert once when it crosses a threshold, with hysteresis before re-arming. Includes 7 days of polling. Costs $0.005 USDC per call via x402 (Base) — 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.

輸入參數coin必填abovebelowwebhookmove_pct_24hidempotency_key

check_sec_filings

Check SEC filings now

Get recent SEC filings for a ticker or CIK now, with decoded 8-K items and parsed Form 4 transactions. Costs $0.001 USDC per call via x402 (Base) — 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.

輸入參數cikformsticker

watch_sec_filings

Watch a company for SEC filings

Monitor a company between agent runs for new SEC filings, decoded 8-K events, and parsed Form 4 trades. Includes 7 days of polling. Costs $0.005 USDC per call via x402 (Base) — 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.

輸入參數cikformstickerwebhookidempotency_key

check_insider_trades

Check insider trades now

Get recent Form 4 insider transactions for a ticker or CIK, parsed into buyer/seller, shares, value, transaction type, and 10b5-1 status. Costs $0.001 USDC per call via x402 (Base) — 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.

輸入參數cikticker

watch_insider_trades

Watch a company for insider trades

Monitor a company between agent runs for new Form 4 insider buys, sells, grants, and tax withholding. Includes 7 days of polling. Costs $0.005 USDC per call via x402 (Base) — 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.

輸入參數ciktickerwebhookidempotency_key

check_x402_endpoint

Validate an x402 endpoint now

Send an unpaid request and validate the endpoint's HTTP 402 challenge, accepted networks, scheme, amount, and recipient. The target probe does not attach payment. Costs $0.001 USDC per call via x402 (Base) — 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.

輸入參數url必填bodymethodexpected_schemeexpected_networkexpected_amount_atomic

watch_x402_endpoint

Watch an x402 endpoint

Monitor an x402 endpoint for downtime and changes to its payment challenge, price, network, scheme, or recipient. Target probes do not attach payment. Includes 7 days of polling. Costs $0.005 USDC per call via x402 (Base) — 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.

輸入參數url必填bodymethodwebhookexpected_schemeidempotency_keyexpected_networkexpected_amount_atomic

poll_alerts

Poll a watch for new alerts

What is new since your last run. Pass since={last seq you saw}; the response carries a new cursor. New paid watches include 7 days of polling. After that window, one $0.005 paid poll renews the next 7 days. Polling keeps the watch alive; beta watches remain free. Free through the watch's included polling window; after that, one $0.005 USDC x402 payment renews 7 days. No API key or account.

輸入參數key必填sincewatch_id必填

try_watch

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, x402). 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.

輸入參數cikurlbodycointype必填abovebelowformsmethodtickermove_pct_24hexpected_scheme另有 2 個

poll_trial

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; paid creation includes 7 days of polling and can be renewed. Free — no payment required.

輸入參數key必填sincewatch_id必填

delete_watch

Delete a watch

Stop and delete a watch. Free. Free — no payment required.

輸入參數key必填watch_id必填

版本歷史

1
  1. v1.0.1最新Sep 16, 2026

評分

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  • 文件15 分

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