# SaaS Verification Tokens Change Watch

> SaaS Verification Tokens Change Watch is a paid API for AI agents from intel.rallylive.ca, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Monitors DNS TXT verification tokens for a domain and alerts when SaaS vendor presence changes, returning a diff of which tokens appeared or disappeared.

## Facts

- Endpoint: GET https://intel.rallylive.ca/watch/dns/txt-verification
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saas-verification-tokens-change-watch-878920e2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ZGU6mPLHQLsdfomIucSGS

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 saas-verification-tokens-change-watch-878920e2
```

Example prompt: Watch for any changes in the SaaS tools used by example.com — check the DNS TXT verification tokens and let me know if anything is different from the last time you checked.

## When to prefer this

Choose this endpoint when you need to detect and be alerted to changes in which SaaS vendors a company uses, inferred from DNS TXT verification tokens, on a scheduled basis. Ideal for competitive intelligence, sales prospecting, or IT auditing workflows where you want a diff of before/after state rather than just a point-in-time snapshot. Use it over a plain DNS TXT lookup when change detection and historical comparison (up to 90 days) are required.

## Known failure modes

- Domain not found or invalid — DNS lookup fails with no results
- No previous snapshot exists — first call returns current data with changed=false and no diff
- Domain has no DNS TXT verification tokens — returns empty vendor list
- Result cache expired (older than 90 days) — treated as first call with no previous baseline
- Payment not received — x402 payment required error returned before data is served

## How this service works

Change watch for saas verification tokens: runs the check and compares it with the result from your previous call for the same domain (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when which saas vendors a company uses, from dns txt verification tokens changes. $0.01 per check.

## Output

Returns the current set of SaaS vendors detected via DNS TXT verification tokens, a boolean indicating whether anything changed since the last check (stored for 90 days), a detailed diff showing exactly which fields changed with before and after values, and the timestamp of when the last change was seen.

## 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/saas-verification-tokens-change-watch-878920e2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from intel.rallylive.ca](https://www.zero.xyz/host/intel.rallylive.ca/llms.txt)