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NIGHTSHIFT Watchtower — Blockchain Address Change Monitor
x402
NIGHTSHIFT Watchtower — Blockchain Address Change Monitor is a paid API for AI agents from getnightshift.tech, paid per call via x402, $1/call, status unknown (last checked 2026-10-26).
Monitors an on-chain address (token or hook) for changes over a 7-day period and returns a structured diff report with severity-tagged findings, Telegram alert link, and a manage token.
Price / call$1
Success—
StatusUnknown
How this service works
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Output
Returns a JSON object containing: the chain and address monitored, a changes array where each item has a field name, before/after values, evidence links, block numbers, and severity (info/low/medium/high/critical), a plain-text summary, a baseline recording block and timestamp, a Telegram alert link, a manage token (shown once) to read or cancel the watch, a watch ID with expiry, lists of unavailable and unsupported checks, a human-readable markdown report, and a coverage note clarifying check scope.
Example use cases
DeFi token security watch
“I'm about to invest in a token at 0xabc123...def on Ethereum — can you monitor it for the next 7 days and tell me immediately if anything changes, especially anything high or critical severity?”
Smart contract change detection for a deployed hook
“We just deployed a hook contract on Ethereum at 0x1234...5678. Watch it for 7 days and send me a Telegram alert if anything unexpected changes on-chain.”
Pre-listing due diligence monitoring
“Before we list this Ethereum token at 0xdeadbeef...cafe on our platform, set up a 7-day watch so we know if the contract state changes or shows any suspicious activity in the meantime.”
Technical details
Endpoint
GEThttps://getnightshift.tech/api/v1/watchtower/watch/%7Bchain%7D/%7Baddress%7D?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need ongoing 7-day surveillance of a specific Ethereum address (token or hook) rather than a one-time snapshot. It is ideal for pre-investment due diligence, post-deployment contract monitoring, or any scenario where you need severity-rated change alerts and optional Telegram notifications. Prefer it over static auditing tools when you want continuous, automated change detection with structured diffs and block-level evidence.
Side effects
- Unsupported chain returns an unsupported array entry rather than full analysis
- Address not found or invalid format may return an error or empty baseline
- Some checks (e.g. transfer restrictions, blacklist) listed as unavailable if they cannot run
- Stale flag set to true if data could not be refreshed in time
- Payment failure ($1 USDC) results in 402 response and no watch is created
- Manage token only shown once — losing it means inability to cancel or read the watch
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"kind": "token",
"chain": "ethereum",
"stale": false,
"watch": {
"id": "w_0123456789abcdef",
"days": 7
},
"address": "0xe5e58e53d0bb204aa62c995a6c8cc8a48e60c3ac",
"changes": [],
"summary": "Baseline recorded at block 23650000; watching hourly until 2026-11-01.",
"baseline": {
"at": "2026-10-25T09:00:00.000Z",
"block": 23650000
},
"telegram": "https://t.me/…?start=wt_…",
"manageToken": "…",
"unavailable": [],
"unsupported": [
"transfer restrictions (blacklist, max transaction)",
"other chains"
],
"coverageNote": "Check coverage is not a probability that a token is safe or profitable."
}
}Tags
x402
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