longwatch
https://longwatch.devYou are ephemeral. longwatch remembers what you already saw. Create a watch, persist watch_id + key, poll later for only what you missed — pages, RSS, crypto prices, SEC filings. No API key, no account — pay per call in USDC.
Quality grade
How grading works- ✓ Answers a real HTTP 402 challenge
- ✓ Publishes a /.well-known/x402 descriptor
- ✓ Payment address on record
- ✓ Settlement network declared
- ✓ Price declared
Paid endpoints
17 resource(s) advertised by this origin.
https://longwatch.dev/check
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 w
https://longwatch.dev/check-web-page
Fetch a public web page now and return normalized text metadata. Use for a one-session lookup.
https://longwatch.dev/watch-web-page
Monitor a public web page between agent runs and alert with added and removed text when it changes. Includes 7 days of polling.
https://longwatch.dev/check-rss-feed
Read the latest items from a public RSS or Atom feed now. Use for a one-session lookup.
https://longwatch.dev/watch-rss-feed
Monitor an RSS or Atom feed between agent runs and alert once per new item. Includes 7 days of polling.
https://longwatch.dev/check-crypto-price
Check a CoinGecko asset price and whether it currently meets a USD threshold or 24-hour move condition.
https://longwatch.dev/watch-crypto-price
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.
https://longwatch.dev/check-sec-filings
Get recent SEC filings for a ticker or CIK now, with decoded 8-K items and parsed Form 4 transactions.
https://longwatch.dev/watch-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.
https://longwatch.dev/check-insider-trades
Get recent Form 4 insider transactions for a ticker or CIK, parsed into buyer/seller, shares, value, transaction type, and 10b5-1 status.
https://longwatch.dev/watch-insider-trades
Monitor a company between agent runs for new Form 4 insider buys, sells, grants, and tax withholding. Includes 7 days of polling.
https://longwatch.dev/check-x402-endpoint
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.
https://longwatch.dev/watch-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.
https://longwatch.dev/watches/{id}/credits
Buy delivery credits for a watch, so alerts continue being pushed to its webhook. Each purchase adds a fixed batch of deliveries.
https://longwatch.dev/watches
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
https://longwatch.dev/watches/{id}/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.
https://longwatch.dev/mcp
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 w
How to call
curl -sS -i -X GET https://longwatch.dev # expect HTTP 402 Payment Required (about $0.001/call)
https://longwatch.dev/mcp
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