Mistral

Connect Mistral le Chat to the FinologeeBKO MCP server as a custom connector

Introduction

Mistral le Chat connects to the FinologeeBKO MCP server as a custom connector, letting you drive the platform through natural-language interaction. Mistral acts under your existing FinologeeBKO rights and follows the same signatory-rule approvals that apply elsewhere on the platform.



Prerequisites

Before connecting, make sure you have:

  • The MCP server enabled for your tenant. Contact [email protected] to request it.
  • Your MCP endpoint URL and OAuth client ID. See MCP server for where to find these.
  • A le Chat account with custom-connector access.


Adding the connector

Add the MCP server as a custom connector in le Chat:

  1. Open Settings → Connectors → Add custom connector
  2. Enter a Name, for example finologeebko
  3. Set the MCP server URL to your endpoint URL, for example https://<your-tenant-host>/mcp
  4. Set the OAuth Client ID to your client ID
  5. In the Client secret field, enter any non-empty value, for example x
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le Chat requires a non-empty client secret

If the client secret field is left empty, le Chat attempts Dynamic Client Registration, which FinologeeBKO does not allow, and the connector never reaches the login step. Entering any non-empty value makes le Chat use your client ID with the standard authorization-code flow instead. FinologeeBKO ignores the value you enter, because the client is public.



Authenticating

Save the connector and click Connect. A browser opens at the FinologeeBKO login page. Sign in with your credentials. The connector turns to connected.



Verifying the connection

Confirm the connection is working:

  1. Enable the tools in the connector's settings tab.
  2. Check that tools appear namespaced bko__<domain>__<verb>, for example:
    • bko__cash_account__find_cash_accounts
    • bko__counterparty__get_counterparties
    • bko__credit_transfer__create
  3. Ask le Chat something that uses a tool, such as "list cash accounts", and confirm the tool runs.


Troubleshooting

SymptomCause and fix
Connecting fails and no login page appearsThe client secret field is empty, so le Chat attempts a registration that FinologeeBKO blocks. Enter any non-empty value in the client secret field.
Browser redirect or callback is rejectedThe redirect URI is not registered for your client. Contact [email protected].
Tools are missing, or a tool call is denied after connectingYour account lacks the FinologeeBKO rights required for that action. Each tool requires its own permission. Review your permissions with your administrator.


Related documentation

Explore related sections for more information:



Support

For assistance connecting Mistral to the MCP server, contact [email protected].


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