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longwatch

https://longwatch.dev
● healthy utility

You 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.

Category
utility
Chains
base, eip155:8453, solana, solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp
Price
$0.0010–$0.0500 USDC

Quality grade

How grading works
B 72.9 / 100
Availability 40.0 / 40
Endpoint responded (HTTP 200)
Payability 20.0 / 20
  • ✓ Answers a real HTTP 402 challenge
  • ✓ Publishes a /.well-known/x402 descriptor
  • ✓ Payment address on record
  • ✓ Settlement network declared
  • ✓ Price declared
Demand 12.9 / 40
5 distinct payers, 62 USDC transfers in the last 30 days
Owner verified 0.0 / 3
Nobody has claimed this listing yet
Endpoint last checked 12 h ago. On-chain activity last read 11 d ago. Availability and on-chain demand are both re-probed daily; the grade updates automatically on the next pass.

Paid endpoints

17 resource(s) advertised by this origin.

GET 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

POST https://longwatch.dev/check-web-page

Fetch a public web page now and return normalized text metadata. Use for a one-session lookup.

POST 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.

POST https://longwatch.dev/check-rss-feed

Read the latest items from a public RSS or Atom feed now. Use for a one-session lookup.

POST 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.

POST https://longwatch.dev/check-crypto-price

Check a CoinGecko asset price and whether it currently meets a USD threshold or 24-hour move condition.

POST 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.

POST 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.

POST 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.

POST 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.

POST 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.

POST 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.

POST 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.

POST 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.

POST 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

GET 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 · x402-fetch / x402-axios will auto-handle 402
curl -sS -i -X GET https://longwatch.dev  # expect HTTP 402 Payment Required (about $0.001/call)
MCP endpoint
https://longwatch.dev/mcp
/.well-known/x402.json
https://longwatch.dev/.well-known/x402

Listed in

Directories this entry was found in.

cdp-bazaar x402scan