# Unable to connect to ONCEHUB mcp server

**URL:** <https://community.retellai.com/t/unable-to-connect-to-oncehub-mcp-server/2419>\
**Category:** Support Help\
**Tags:** agent-performance\
**Created:** [April 22, 2026, 9:19am UTC](https://community.retellai.com/t/unable-to-connect-to-oncehub-mcp-server/2419 "2026-04-22T09:19:19Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![nikhil.jindal](https://yyz2.discourse-cdn.com/flex008/user_avatar/community.retellai.com/nikhil.jindal/32/754_2.png) [@nikhil.jindal](https://community.retellai.com/u/nikhil.jindal)\
**Post date:** [April 22, 2026, 9:19am UTC](https://community.retellai.com/t/unable-to-connect-to-oncehub-mcp-server/2419/1 "2026-04-22T09:19:19Z")

</div>

MCP url is : [https://mcp.oncehub.com/sse](https://mcp.oncehub.com/sse "https://mcp.oncehub.com/sse")

Tried connecting it while creating agent.  
After adding api key and adding there is no tools list instead it keeps loading without providing any tools list

This mcp does not need api key to get tools list and able to make connection on openAI or vscode.

---

<div class="post-metadata">

**Author:** ![mark1](https://yyz2.discourse-cdn.com/flex008/user_avatar/community.retellai.com/mark1/32/2524_2.png) [@mark1](https://community.retellai.com/u/mark1)\
**Post date:** [April 22, 2026, 1:26pm UTC](https://community.retellai.com/t/unable-to-connect-to-oncehub-mcp-server/2419/2 "2026-04-22T13:26:30Z")

</div>

Hello @nikhil.jindal

I’ve forwarded this to our team for review.

We’ll get back to you as soon as we have an update.

Best regards

---

<div class="post-metadata">

**Author:** ![mark1](https://yyz2.discourse-cdn.com/flex008/user_avatar/community.retellai.com/mark1/32/2524_2.png) [@mark1](https://community.retellai.com/u/mark1)\
**Post date:** [April 22, 2026, 2:20pm UTC](https://community.retellai.com/t/unable-to-connect-to-oncehub-mcp-server/2419/3 "2026-04-22T14:20:54Z")

</div>

Hey @nikhil.jindal

Can you share the agent id ?

Thank You

---

<div class="post-metadata">

**Author:** ![nikhil.jindal](https://yyz2.discourse-cdn.com/flex008/user_avatar/community.retellai.com/nikhil.jindal/32/754_2.png) [@nikhil.jindal](https://community.retellai.com/u/nikhil.jindal)\
**Post date:** [April 22, 2026, 2:29pm UTC](https://community.retellai.com/t/unable-to-connect-to-oncehub-mcp-server/2419/4 "2026-04-22T14:29:08Z")

</div>

this id: agent\_2d2591744c3c67de32c7a288ce

---

<div class="post-metadata">

**Author:** ![mark1](https://yyz2.discourse-cdn.com/flex008/user_avatar/community.retellai.com/mark1/32/2524_2.png) [@mark1](https://community.retellai.com/u/mark1)\
**Post date:** [April 22, 2026, 2:57pm UTC](https://community.retellai.com/t/unable-to-connect-to-oncehub-mcp-server/2419/5 "2026-04-22T14:57:36Z")

</div>

Hey @nikhil.jindal

Team just responded you on your email, you can check.

Thank You