dev.coinop/longwatch
REMOTE · LONGWATCH.DEV
You are ephemeral; this remembers. Persist watch_id+key; poll later for what you missed.
Available components
Last scanned (3 hours ago)
Scores higher than 66% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Monitoring and Observability
Recent critical change
Authorization (30 Oct 2026). See the changelog before you install this server.
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security57
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation check failed: no authorisation is required to call this server, and it exposes a tool marked destructive (check_now). See how to fix → View diagnostics → Fail
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability60
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 4211 tokens (~233/item across 18 items; 18 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
- No destabilizing schema changes in the last 30 days.Pass
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- All 2 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation.Pass
- An AI judge read all 18 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 30 Oct 26 +3
- Authorization: unverified → fail ▼ critical
- Tool “check_now” is now declared destructive security
- Tool “check_x402_endpoint” is now declared destructive security
- Tool “create_watch” is now declared destructive security
- Tool “delete_watch” is now declared destructive security
- Tool “try_watch” is now declared destructive security
- Tool “watch_x402_endpoint” is now declared destructive security
- Schema quality: 180 → 233 ▼ functional
- Tool coverage: 56% → 100% ▲ functional
- Destructive annotations: All 2 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation. functional
- “check_crypto_price” reworded the description of “above” cosmetic
- “check_crypto_price” reworded the description of “below” cosmetic
- “check_crypto_price” reworded the description of “move_pct_24h” cosmetic
- “check_insider_trades” reworded the description of “cik” cosmetic
- “check_insider_trades” reworded the description of “ticker” cosmetic
- “check_now” reworded the description of “body” cosmetic
- “check_now” reworded the description of “expected_amount_atomic” cosmetic
- “check_now” reworded the description of “expected_network” cosmetic
- “check_now” reworded the description of “expected_scheme” cosmetic
- “check_now” reworded the description of “method” cosmetic
- “check_sec_filings” reworded the description of “cik” cosmetic
- “check_sec_filings” reworded the description of “forms” cosmetic
- “check_sec_filings” reworded the description of “ticker” cosmetic
- “check_x402_endpoint” reworded the description of “body” cosmetic
- “check_x402_endpoint” reworded the description of “expected_amount_atomic” cosmetic
- “check_x402_endpoint” reworded the description of “expected_network” cosmetic
- “check_x402_endpoint” reworded the description of “expected_scheme” cosmetic
- “check_x402_endpoint” reworded the description of “method” cosmetic
- “check_x402_endpoint” reworded the description of “url” cosmetic
- “create_watch” reworded the description of “body” cosmetic
- “create_watch” reworded the description of “expected_amount_atomic” cosmetic
- “create_watch” reworded the description of “expected_network” cosmetic
- “create_watch” reworded the description of “expected_scheme” cosmetic
- “create_watch” reworded the description of “method” cosmetic
- “try_watch” reworded the description of “body” cosmetic
- “try_watch” reworded the description of “expected_amount_atomic” cosmetic
- “try_watch” reworded the description of “expected_network” cosmetic
- “try_watch” reworded the description of “expected_scheme” cosmetic
- “try_watch” reworded the description of “method” cosmetic
- “watch_crypto_price” reworded the description of “above” cosmetic
- “watch_crypto_price” reworded the description of “below” cosmetic
- “watch_crypto_price” reworded the description of “move_pct_24h” cosmetic
- “watch_insider_trades” reworded the description of “cik” cosmetic
- “watch_insider_trades” reworded the description of “ticker” cosmetic
- “watch_sec_filings” reworded the description of “cik” cosmetic
- “watch_sec_filings” reworded the description of “forms” cosmetic
- “watch_sec_filings” reworded the description of “ticker” cosmetic
- “watch_x402_endpoint” reworded the description of “body” cosmetic
- “watch_x402_endpoint” reworded the description of “expected_amount_atomic” cosmetic
- “watch_x402_endpoint” reworded the description of “expected_network” cosmetic
- “watch_x402_endpoint” reworded the description of “expected_scheme” cosmetic
- “watch_x402_endpoint” reworded the description of “method” cosmetic
- “watch_x402_endpoint” reworded the description of “url” cosmetic
- 28 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 2 Sept 26 0
- Stability: 0.97 → pass security
- 29 Aug 26 0
- Tool “check_x402_endpoint” rewrote its description, which is the text the model reads security
- Tool “poll_trial” rewrote its description, which is the text the model reads security
- Tool “watch_x402_endpoint” rewrote its description, which is the text the model reads security
- 27 Aug 26 0
- Tool “check_now” rewrote its description, which is the text the model reads security
- Tool “create_watch” rewrote its description, which is the text the model reads security
- Tool “poll_alerts” rewrote its description, which is the text the model reads security
- Tool “try_watch” rewrote its description, which is the text the model reads security
- Tool coverage: 100% → 56% ▼ functional
- Schema quality: 206 → 179 ▲ functional
- Schema quality: excellent → good functional
- New tool “check_crypto_price” functional
- New tool “check_insider_trades” functional
- New tool “check_rss_feed” functional
- New tool “check_sec_filings” functional
- New tool “check_web_page” functional
- New tool “check_x402_endpoint” functional
- New tool “watch_crypto_price” functional
- New tool “watch_insider_trades” functional
- New tool “watch_rss_feed” functional
- New tool “watch_sec_filings” functional
- New tool “watch_web_page” functional
- New tool “watch_x402_endpoint” functional
- “check_now” added an optional parameter “body” cosmetic
- “check_now” added an optional parameter “expected_amount_atomic” cosmetic
- “check_now” added an optional parameter “expected_network” cosmetic
- “check_now” added an optional parameter “expected_scheme” cosmetic
- “check_now” added an optional parameter “method” cosmetic
- “create_watch” added an optional parameter “body” cosmetic
- “create_watch” added an optional parameter “expected_amount_atomic” cosmetic
- “create_watch” added an optional parameter “expected_network” cosmetic
- “create_watch” added an optional parameter “expected_scheme” cosmetic
- “create_watch” added an optional parameter “method” cosmetic
- “try_watch” added an optional parameter “body” cosmetic
- “try_watch” added an optional parameter “expected_amount_atomic” cosmetic
- “try_watch” added an optional parameter “expected_network” cosmetic
- “try_watch” added an optional parameter “expected_scheme” cosmetic
- “try_watch” added an optional parameter “method” cosmetic
- “check_now” reworded the description of “url” cosmetic
- “create_watch” reworded the description of “url” cosmetic
- “try_watch” reworded the description of “url” cosmetic
- 26 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Aug 26 0
- “create_watch” added an optional parameter “idempotency_key” cosmetic
1 cosmetic change on this day. Switch on “Show cosmetic changes” to see it.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Probed https://longwatch.dev/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=longwatch.dev | CN=YE1,O=Let's Encrypt,C=US | 1 Oct 2026 | 30 Dec 2026 | ECDSA 256 | ECDSA-SHA384 | 69ecf294c4a7caf1d0229df7133a0ef926f |
| SANs: longwatch.dev | ||||||
| CN=YE1,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 5ddd70dd31f801c85c186a7a04b80afe |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of longwatch.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| longwatch.dev. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://longwatch.dev/mcp | Verified | 200 | |
| http (plaintext) | http://longwatch.dev/mcp | HTTPS enforced | 308 | https://longwatch.dev/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
check_crypto_price Check a crypto price threshold now ~211
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.
| Name | Type | Req | Description |
|---|---|---|---|
| above | number | – | price: USD upper threshold, e.g. 150000; provide above, below, or move_pct_24h |
| below | number | – | price: USD lower threshold, e.g. 90000; provide above, below, or move_pct_24h |
| coin | string | yes | CoinGecko id, e.g. bitcoin |
| move_pct_24h | number | – | price: absolute 24-hour percentage threshold, e.g. 5 for 5% |
No output schema declared.
No examples provided.
check_insider_trades Check insider trades now ~172
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.
| Name | Type | Req | Description |
|---|---|---|---|
| cik | number | – | edgar: numeric SEC CIK, e.g. 1045810 for NVIDIA; alternative to ticker |
| ticker | string | – | edgar: stock ticker, e.g. NVDA; provide ticker or cik |
No output schema declared.
No examples provided.
check_now Look at a source right now ~493
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.
| Name | Type | Req | Description |
|---|---|---|---|
| above | number | – | price: threshold to compare against |
| below | number | – | price: threshold to compare against |
| body | object | – | x402: optional JSON object for POST/PUT/PATCH/DELETE, e.g. {"type":"edgar","ticker":"NVDA"}; omit for GET/HEAD |
| cik | number | – | edgar: SEC CIK, as an alternative to ticker |
| coin | string | – | price: CoinGecko id, e.g. 'bitcoin' |
| expected_amount_atomic | string|number | – | x402: optional expected token amount in atomic units, e.g. "1000" for 0.001 USDC |
| expected_network | string | – | x402: optional expected CAIP-2 network, e.g. eip155:8453 |
| expected_scheme | string | – | x402: optional expected scheme, e.g. exact |
| forms | array | – | edgar: form filter, e.g. ["8-K","4"] |
| method | string | – | x402: HTTP method, default GET. POST/PUT/PATCH/DELETE can modify the target even without payment; use only on a target you are authorized to probe |
| move_pct_24h | number | – | price: 24h move threshold to compare against |
| ticker | string | – | edgar: stock ticker, e.g. 'NVDA' |
| type | string | yes | source type |
| url | string | – | url|rss|x402: public URL |
No output schema declared.
No examples provided.
check_rss_feed Read an RSS feed now ~117
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.
| Name | Type | Req | Description |
|---|---|---|---|
| url | string | yes | public RSS or Atom feed URL |
No output schema declared.
No examples provided.
check_sec_filings Check SEC filings now ~181
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.
| Name | Type | Req | Description |
|---|---|---|---|
| cik | number | – | edgar: numeric SEC CIK, e.g. 1045810 for NVIDIA; alternative to ticker |
| forms | array | – | edgar: form filter, e.g. ["8-K","4"] |
| ticker | string | – | edgar: stock ticker, e.g. NVDA; provide ticker or cik |
No output schema declared.
No examples provided.
check_web_page Read a public web page now ~115
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.
| Name | Type | Req | Description |
|---|---|---|---|
| url | string | yes | public http(s) page URL |
No output schema declared.
No examples provided.
check_x402_endpoint Validate an x402 endpoint now ~307
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.
| Name | Type | Req | Description |
|---|---|---|---|
| body | object | – | x402: optional JSON object for POST/PUT/PATCH/DELETE, e.g. {"type":"edgar","ticker":"NVDA"}; omit for GET/HEAD |
| expected_amount_atomic | string|number | – | x402: optional expected token amount in atomic units, e.g. "1000" for 0.001 USDC |
| expected_network | string | – | x402: optional expected CAIP-2 network, e.g. eip155:8453 |
| expected_scheme | string | – | x402: optional expected scheme, e.g. exact |
| method | string | – | x402: HTTP method, default GET. POST/PUT/PATCH/DELETE can modify the target even without payment; use only on a target you are authorized to probe |
| url | string | yes | Public HTTP(S) payment endpoint URL, e.g. https://example.com/paid-api |
No output schema declared.
No examples provided.
create_watch Create a standing watch ~528
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.
| Name | Type | Req | Description |
|---|---|---|---|
| above | number | – | price: alert when USD price crosses above this |
| below | number | – | price: alert when USD price crosses below this |
| body | object | – | x402: optional JSON object for POST/PUT/PATCH/DELETE, e.g. {"type":"edgar","ticker":"NVDA"}; omit for GET/HEAD |
| cik | number | – | edgar: SEC CIK, as an alternative to ticker |
| coin | string | – | price: CoinGecko id, e.g. 'bitcoin' |
| expected_amount_atomic | string|number | – | x402: optional expected token amount in atomic units, e.g. "1000" for 0.001 USDC |
| expected_network | string | – | x402: optional expected CAIP-2 network, e.g. eip155:8453 |
| expected_scheme | string | – | x402: optional expected scheme, e.g. exact |
| forms | array | – | edgar: form filter, e.g. ["8-K","4"] |
| idempotency_key | string | – | unique retry key; the same key and input return the original watch without charging twice |
| method | string | – | x402: HTTP method, default GET. POST/PUT/PATCH/DELETE can modify the target even without payment; use only on a target you are authorized to probe |
| move_pct_24h | number | – | price: alert when |24h change| exceeds this percent |
| ticker | string | – | edgar: stock ticker, e.g. 'NVDA' |
| type | string | yes | watch type |
| url | string | – | url|rss|x402: public URL to watch |
| webhook | object | – | optional: POST alerts to this URL as they occur (signed); polling still works |
No output schema declared.
No examples provided.
delete_watch Delete a watch ~46
Stop and delete a watch. Free. Free — no payment required.
| Name | Type | Req | Description |
|---|---|---|---|
| key | string | yes | key returned by create_watch |
| watch_id | string | yes | watch_id to delete |
No output schema declared.
No examples provided.
poll_alerts Poll a watch for new alerts ~151
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.
| Name | Type | Req | Description |
|---|---|---|---|
| key | string | yes | key returned by create_watch |
| since | number | – | highest alert seq already seen; 0 on first poll |
| watch_id | string | yes | watch_id returned by create_watch |
No output schema declared.
No examples provided.
poll_trial Poll a free trial watch ~110
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.
| Name | Type | Req | Description |
|---|---|---|---|
| key | string | yes | key returned by try_watch |
| since | number | – | highest alert seq already seen; 0 on first poll |
| watch_id | string | yes | watch_id returned by try_watch |
No output schema declared.
No examples provided.
try_watch Create a free trial watch ~408
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.
| Name | Type | Req | Description |
|---|---|---|---|
| above | number | – | price: alert when USD price crosses above this |
| below | number | – | price: alert when USD price crosses below this |
| body | object | – | x402: optional JSON object for POST/PUT/PATCH/DELETE, e.g. {"type":"edgar","ticker":"NVDA"}; omit for GET/HEAD |
| cik | number | – | edgar: SEC CIK, as an alternative to ticker |
| coin | string | – | price: CoinGecko id, e.g. 'bitcoin' |
| expected_amount_atomic | string|number | – | x402: optional expected token amount in atomic units, e.g. "1000" for 0.001 USDC |
| expected_network | string | – | x402: optional expected CAIP-2 network, e.g. eip155:8453 |
| expected_scheme | string | – | x402: optional expected scheme, e.g. exact |
| forms | array | – | edgar: form filter, e.g. ["8-K","4"] |
| method | string | – | x402: HTTP method, default GET. POST/PUT/PATCH/DELETE can modify the target even without payment; use only on a target you are authorized to probe |
| move_pct_24h | number | – | price: alert when |24h change| exceeds this percent |
| ticker | string | – | edgar: stock ticker, e.g. 'NVDA' |
| type | string | yes | watch type |
| url | string | – | url|rss|x402: public URL to watch |
No output schema declared.
No examples provided.
watch_crypto_price Watch a crypto price threshold ~261
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.
| Name | Type | Req | Description |
|---|---|---|---|
| above | number | – | price: USD upper threshold, e.g. 150000; provide above, below, or move_pct_24h |
| below | number | – | price: USD lower threshold, e.g. 90000; provide above, below, or move_pct_24h |
| coin | string | yes | CoinGecko id, e.g. bitcoin |
| idempotency_key | string | – | unique retry key; the same key and input return the original watch |
| move_pct_24h | number | – | price: absolute 24-hour percentage threshold, e.g. 5 for 5% |
| webhook | object | – | optional HTTPS endpoint for signed push alerts; polling still works |
No output schema declared.
No examples provided.
watch_insider_trades Watch a company for insider trades ~206
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.
| Name | Type | Req | Description |
|---|---|---|---|
| cik | number | – | edgar: numeric SEC CIK, e.g. 1045810 for NVIDIA; alternative to ticker |
| idempotency_key | string | – | unique retry key; the same key and input return the original watch |
| ticker | string | – | edgar: stock ticker, e.g. NVDA; provide ticker or cik |
| webhook | object | – | optional HTTPS endpoint for signed push alerts; polling still works |
No output schema declared.
No examples provided.
watch_rss_feed Watch an RSS feed for new items ~161
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.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotency_key | string | – | unique retry key; the same key and input return the original watch |
| url | string | yes | public RSS or Atom feed URL |
| webhook | object | – | optional HTTPS endpoint for signed push alerts; polling still works |
No output schema declared.
No examples provided.
watch_sec_filings Watch a company for SEC filings ~228
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.
| Name | Type | Req | Description |
|---|---|---|---|
| cik | number | – | edgar: numeric SEC CIK, e.g. 1045810 for NVIDIA; alternative to ticker |
| forms | array | – | edgar: form filter, e.g. ["8-K","4"] |
| idempotency_key | string | – | unique retry key; the same key and input return the original watch |
| ticker | string | – | edgar: stock ticker, e.g. NVDA; provide ticker or cik |
| webhook | object | – | optional HTTPS endpoint for signed push alerts; polling still works |
No output schema declared.
No examples provided.
watch_web_page Watch a web page for text changes ~163
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.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotency_key | string | – | unique retry key; the same key and input return the original watch |
| url | string | yes | public http(s) page URL |
| webhook | object | – | optional HTTPS endpoint for signed push alerts; polling still works |
No output schema declared.
No examples provided.
watch_x402_endpoint Watch an x402 endpoint ~353
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.
| Name | Type | Req | Description |
|---|---|---|---|
| body | object | – | x402: optional JSON object for POST/PUT/PATCH/DELETE, e.g. {"type":"edgar","ticker":"NVDA"}; omit for GET/HEAD |
| expected_amount_atomic | string|number | – | x402: optional expected token amount in atomic units, e.g. "1000" for 0.001 USDC |
| expected_network | string | – | x402: optional expected CAIP-2 network, e.g. eip155:8453 |
| expected_scheme | string | – | x402: optional expected scheme, e.g. exact |
| idempotency_key | string | – | unique retry key; the same key and input return the original watch |
| method | string | – | x402: HTTP method, default GET. POST/PUT/PATCH/DELETE can modify the target even without payment; use only on a target you are authorized to probe |
| url | string | yes | Public HTTP(S) payment endpoint URL, e.g. https://example.com/paid-api |
| webhook | object | – | optional HTTPS endpoint for signed push alerts; polling still works |
No output schema declared.
No examples provided.
How do I install the dev.coinop/longwatch MCP server?
dev.coinop/longwatch is a hosted endpoint at https://longwatch.dev/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · longwatch.dev
claude mcp add --transport http dev-coinop-longwatch 'https://longwatch.dev/mcp'
What is the dev.coinop/longwatch MCP server?
dev.coinop/longwatch is an MCP server listed in the public MCP registry as dev.coinop/longwatch. You are ephemeral; this remembers. Persist watch_id+key; poll later for what you missed. This page covers its hosted endpoint (https://longwatch.dev/mcp).
Is the dev.coinop/longwatch MCP server safe to use?
dev.coinop/longwatch scores 76 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the dev.coinop/longwatch MCP server expose?
dev.coinop/longwatch exposes 18 tools: check_now, create_watch, check_web_page, watch_web_page, check_rss_feed, and 13 more. Their descriptions and schemas cost roughly 4,211 tokens of context every time the server is loaded.
Does the dev.coinop/longwatch MCP server require authentication?
No. We connected to dev.coinop/longwatch without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the dev.coinop/longwatch MCP server still maintained?
dev.coinop/longwatch is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.