# Linear Domain Verification Change Watch

> Linear Domain Verification Change Watch is a paid API for AI agents from dns.intel.rallylive.ca, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-20).

Monitors whether a domain has Linear's domain verification DNS record, alerting when the verification status changes between checks.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/watch/dns/verification/linear?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/linear-domain-verification-change-watch-dac415af
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NgZcjfap9yX75CPO0nXx7

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability linear-domain-verification-change-watch-dac415af
```

Example prompt: Keep an eye on whether Linear's domain verification DNS record is active for acme.com — let me know as soon as the status changes from what it was last time.

## When to prefer this

Choose this endpoint when you need to be alerted to changes in Linear domain verification status rather than simply querying the current state. Ideal for scheduled monitoring workflows where you want a diff (before/after) rather than a raw DNS lookup. Use in automation pipelines where acting on state transitions (verified → unverified or vice versa) is the goal.

## Known failure modes

- Domain not found or invalid — DNS lookup fails
- No previous result stored yet — first call returns current state without a meaningful diff
- DNS timeout or upstream Cloudflare DoH failure
- Expired history (>90 days since last check) — treated as first call with no comparison baseline

## How this service works

Change watch for has linear domain verification: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that changed with before/after values, and when it was last seen. Schedule it to be alerted when this changes. $0.02 per check.

## Output

Returns the current Linear domain verification answer (true/false), a boolean 'changed' flag indicating whether the result differs from the previous call, the specific fields that changed with before/after values, and the timestamp of when it was last seen. History is retained for 90 days.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/linear-domain-verification-change-watch-dac415af/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from dns.intel.rallylive.ca](https://www.zero.xyz/host/dns.intel.rallylive.ca/llms.txt)