Connect your agent
Menu
For agents: Markdown · MCP

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)

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 ways to connect

2. Ask

Before you pay that endpoint, check it on Hagglyai.

Claude calls check_endpoint with:

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

3. The answer

Live from Hagglyai's MCP server, as of 2026-10-27 10:18 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 10:18 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