Coinrule MCP Troubleshooting and Connection Fixes

Fix common Coinrule MCP issues, including invalid_client, rejected URLs, OAuth sign-in loops, missing Write tools, and expired access.

Most documented Coinrule MCP connection issues can be traced to the connector configuration, an incomplete OAuth connection, or the access level granted to the assistant. Start by checking the exact MCP server URL and your permissions, then reconnect the assistant if necessary.

For the initial setup process, see  How to Connect Your AI Assistant to Coinrule MCP .

What is the correct Coinrule MCP server URL?

The official Coinrule MCP server URL is:

https://cloud.coinrule.com/mcp

Enter it exactly as shown.

Do not add an additional path or query string.

The central  Coinrule MCP documentation  contains the current setup and per-client connection guides.

How do you fix ChatGPT's invalid_client error?

Coinrule documents invalid_client as a possible ChatGPT connection issue caused by a stale client registration being cached.

The recommended fix is:

Re-adding the connector forces a fresh OAuth registration and can clear the stale registration.

See  How to Connect ChatGPT to Coinrule MCP  for the full setup process.

Why is the MCP connection URL being rejected?

First, confirm that you entered:

https://cloud.coinrule.com/mcp

Do not add additional path segments or query strings.

If the URL is correct but the connection still fails, check whether the AI client you are using supports remote MCP connectors with the required OAuth flow.

For example, Grok support depends on the particular Grok client supporting remote MCP connections with OAuth.

How do you fix a Coinrule OAuth sign-in loop?

If the sign-in process keeps looping or never completes, check the following.

Check the Coinrule account

Make sure you are signing in to the Coinrule account you intend to connect.

Allow pop-ups and redirects

Your AI client needs to open the OAuth sign-in flow and return from it.

Make sure required pop-ups or redirects are allowed.

Remove and reconnect the connector

If the AI client cached a half-finished connection attempt, remove the connector and add it again.

Why can my AI assistant read Coinrule but not trade?

The connection is probably using Read only access.

Coinrule intentionally hides write tools when the coinrule:write scope has not been granted.

This means an assistant with Read only access cannot use supported tools to create, launch, update, start, or stop strategies.

To access supported write capabilities:

Remember that Read + Write on a live connected exchange can allow strategies to trade real funds.

Review  Coinrule MCP Permissions and Security  before changing the permission level.

Why did my Coinrule MCP access suddenly stop working?

There are two documented possibilities to check.

The connection was revoked

Open Settings → Integrations in Coinrule.

If the relevant connection is no longer active, reconnect your AI assistant.

The client failed to refresh an expired access token

Coinrule states that access tokens are short-lived and normally refresh automatically.

If the AI client fails to refresh its access, remove the connector and add it again.

How do you fix a missing account when launching a multi-venue basket?

A multi-venue basket may require accounts on several exchanges.

When the legs of a custom basket use different exchanges, Coinrule maps each exchange to the matching connected account.

If one of those required accounts is missing:

The assistant should not simply guess which account to use for an exchange that is not connected.

Why did the AI assistant choose the wrong action?

Ambiguous prompts can make it harder for the assistant to map your request to the action you intended.

Be explicit about:

For strategy-building prompts, additional useful details can include:

Instead of:

Start my strategy.

A clearer instruction might identify exactly which strategy you mean and the intended venue or execution mode.

The goal is to remove unnecessary ambiguity before the assistant selects and calls a Coinrule MCP tool.

For more guidance on communicating trading instructions to AI assistants, see Coinrule's article on  MCP and AI trading agents .

What should you do if reconnecting does not fix the problem?

If the issue continues:

When reporting an issue, provide enough information to explain what happened, but do not share passwords, exchange API keys, or other sensitive account credentials.

How can you avoid common MCP problems?

Keep the server URL exact

Use only:

https://cloud.coinrule.com/mcp

Choose the right permission level

Use Read only for monitoring and Read + Write only when you intentionally need supported write actions.

Test the connection with a simple request

Ask the assistant to list your strategies or show balances before attempting a more complex workflow.

Be precise with consequential actions

Clearly state whether you mean paper or live trading and provide relevant venue and capital details.

Revoke unused connections

Review connected assistants through Settings → Integrations and revoke access you no longer need.

For a wider explanation of how MCP fits into Coinrule's AI trading ecosystem, see the  Coinrule MCP overview , the  Coinrule AI trading agent guide , and Coinrule's resources on  AI trading .

You can also return to the main  Coinrule website  for information about the wider trading automation platform.

Frequently asked questions

Why does ChatGPT show invalid_client?

ChatGPT may have cached a stale client registration.

Remove and re-add the Coinrule connector to trigger a fresh OAuth registration.

Why can my assistant see balances but not launch a strategy?

The connection is likely Read only.

Reconnect with Read + Write if you intentionally need supported write tools.

Why does the OAuth sign-in keep looping?

Check that you are using the correct Coinrule account, allow the necessary pop-ups and redirects, and reconnect if your client cached an incomplete sign-in attempt.

What should I do when nothing else works?

Revoke the connection under Settings → Integrations, reconnect from scratch, and contact Coinrule support if the issue persists.

Source:  Coinrule MCP documentation