# Stop your agent paying for dead endpoints

An x402 endpoint can take payment and still fail, or stop answering for days. Before your agent pays one it hasn't used, have it check the endpoint's recent record.

## 1. Add Hagglyai to Claude

### In the Claude app (chat box)

1. In Claude, go to **Customize > Connectors**.
2. Click **+ Add**, then **Add custom connector**.
3. Name it **Hagglyai** and enter the server URL `https://hagglyai.com/mcp`, then click **Continue** twice.
4. Under Authentication choose **No sign in** (Hagglyai needs no account or key), then click **Add**.
5. In a chat, click **+** in the lower left, choose **Connectors** and turn **Hagglyai** on.
6. Type your question in the chat box. If Claude asks before using a Hagglyai tool, allow it.

Pro and Max add connectors themselves; Free plans can have one custom connector; on Team and Enterprise an owner adds it and members click Connect. Once added it also works in the desktop and mobile apps.

### In Claude Code (one line)

```sh
claude mcp add --transport http haggly https://hagglyai.com/mcp
```

Any other MCP client: add the server `https://hagglyai.com/mcp` (Streamable HTTP, no key). More at https://hagglyai.com/for-agents.

## 2. Ask

> Before you pay that endpoint, check it on Hagglyai.

Claude calls `check_endpoint` with:

```json
{
  "url": "https://win.oneshotagent.com/v1/tools/search"
}
```

## 3. The answer (live, as of 2026-10-27 11:09 UTC)

# win.oneshotagent.com

- Endpoint: `POST https://win.oneshotagent.com/v1/tools/search` (x402)
- Category: `web-search`
- Listed in: Coinbase x402 Bazaar (https://docs.cdp.coinbase.com/x402/bazaar)
- Listed price: $0.001 on eip155:8453
- Score: 85 (A) · uptime 7d 100% · p50 318 ms · probes 7d 11
- Usage 30d: 23 payers, 2,318 calls

## Other endpoints from win.oneshotagent.com (27)

- `GET https://win.oneshotagent.com/v1/tools/email/send`: $0.001 (messaging)
- `POST https://win.oneshotagent.com/v1/tools/email/send`: $0.001 (messaging)
- `GET https://win.oneshotagent.com/v1/tools/find/company`: $0.01 (enrichment)
- `POST https://win.oneshotagent.com/v1/tools/find/company`: $0.01 (enrichment)
- `GET https://win.oneshotagent.com/v1/tools/find/product`: $0.002 (ecommerce)
- `POST https://win.oneshotagent.com/v1/tools/find/product`: $0.002 (ecommerce)
- `GET https://win.oneshotagent.com/v1/tools/linkedin/profile-view`: $0.01 (enrichment)
- `POST https://win.oneshotagent.com/v1/tools/linkedin/profile-view`: $0.01 (enrichment)
- `GET https://win.oneshotagent.com/v1/tools/lookup/company-profile`: $0.005 (enrichment)
- `POST https://win.oneshotagent.com/v1/tools/lookup/company-profile`: $0.005 (enrichment)
- `GET https://win.oneshotagent.com/v1/tools/lookup/person-dossier`: $0.001 (enrichment)
- `POST https://win.oneshotagent.com/v1/tools/lookup/person-dossier`: $0.001 (enrichment)
- `GET https://win.oneshotagent.com/v1/tools/lookup/person-email`: $0.005 (enrichment)
- `POST https://win.oneshotagent.com/v1/tools/lookup/person-email`: $0.005 (enrichment)
- `GET https://win.oneshotagent.com/v1/tools/lookup/person-posts`: $0.07 (social-media)
- `POST https://win.oneshotagent.com/v1/tools/lookup/person-posts`: $0.07 (social-media)
- `GET https://win.oneshotagent.com/v1/tools/lookup/person-profile`: $0.001 (enrichment)
- `POST https://win.oneshotagent.com/v1/tools/lookup/person-profile`: $0.001 (enrichment)
- `GET https://win.oneshotagent.com/v1/tools/lookup/person-social-accounts`: $0.5 (social-media)
- `POST https://win.oneshotagent.com/v1/tools/lookup/person-social-accounts`: $0.5 (social-media)
- `GET https://win.oneshotagent.com/v1/tools/lookup/place-weather-alerts`: $0.002 (weather)
- `POST https://win.oneshotagent.com/v1/tools/lookup/place-weather-alerts`: $0.002 (weather)
- `GET https://win.oneshotagent.com/v1/tools/search`: $0.001 (web-search)
- `GET https://win.oneshotagent.com/v1/tools/sms/send`: $0.001 (messaging)
- `POST https://win.oneshotagent.com/v1/tools/sms/send`: $0.001 (messaging)
- `GET https://win.oneshotagent.com/v1/tools/web-read`: $0.002 (web-extraction)
- `POST https://win.oneshotagent.com/v1/tools/web-read`: $0.002 (web-extraction)

## Recent probes

- 2026-10-26T17:00:08.662Z: 402 valid 402 2609 ms
- 2026-10-25T20:58:23.228Z: 402 valid 402 318 ms
- 2026-10-25T03:00:40.968Z: 402 valid 402 249 ms
- 2026-10-24T12:00:08.725Z: 402 valid 402 403 ms
- 2026-10-23T22:15:09.742Z: 402 valid 402 275 ms
- 2026-10-23T08:50:09.381Z: 402 valid 402 318 ms
- 2026-10-22T19:45:24.754Z: 402 valid 402 257 ms
- 2026-10-22T07:30:18.971Z: 402 valid 402 162 ms
- 2026-10-21T19:45:16.530Z: 402 valid 402 344 ms
- 2026-10-21T06:45:09.920Z: 402 valid 402 292 ms

Source: hagglyai.com/compare/web-search · as of 2026-10-27 11:09 UTC

## 4. How to read it

- The score and uptime come from Hagglyai's own checks over the last 7 days; Hagglyai never pays, it asks for the payment request.
- Warnings such as a price or wallet that doesn't match the listing are reasons not to pay.
- The recent checks show when it last answered, so an endpoint that went quiet yesterday stands out.

More guides: https://hagglyai.com/guides.md