# Karma.Domains Webhook Subscription Secret Retrieval

> Karma.Domains Webhook Subscription Secret Retrieval is a paid API for AI agents from api.karma.domains, paid per call via x402, $1.5/call, status unknown (last checked 2026-10-16).

Retrieves or rotates the secret key for a specific webhook subscription on the Karma.Domains expired domain platform

## Facts

- Endpoint: POST https://api.karma.domains/v1/webhooks/%7Bsubscription_id%7D/secret?utm_source=zero.xyz
- Price: $1.5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/karma-domains-webhook-subscription-secret-retrieval-0ddbda3d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fXNFLAxg0A6hAqAzGF51W

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 karma-domains-webhook-subscription-secret-retrieval-0ddbda3d -d '<json body>'
```

Example prompt: Can you fetch the webhook secret for my Karma.Domains subscription so I can verify incoming domain alert payloads? My subscription ID is sub_abc123.

## When to prefer this

Use this endpoint when you need to retrieve or rotate the HMAC secret for a specific Karma.Domains webhook subscription to validate incoming webhook payloads about expired domain events. Choose this over general domain search endpoints when your goal is webhook security management rather than domain discovery.

## Known failure modes

- Invalid or non-existent subscription_id returns 404 not found
- Unauthorized access without valid credentials returns 401
- Payment failure (insufficient USDC) returns 402 payment required
- Malformed subscription_id format returns 400 bad request
- Subscription has been deleted or expired returns 410 gone

## How this service works

Find expired domain names with high traffic and strong SEO backlinks daily. Boost your revenue by searching our database of 13,000,000+ expired domains from auctions, backorders, and dropped lists—complete with rich metrics and domain age.

## Output

Returns the secret key associated with the specified webhook subscription ID, used to authenticate and verify webhook payloads delivered by Karma.Domains for expired domain events.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/karma-domains-webhook-subscription-secret-retrieval-0ddbda3d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.karma.domains](https://www.zero.xyz/host/api.karma.domains/llms.txt)