> ## Documentation Index
> Fetch the complete documentation index at: https://docs.neuro-tech.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Connect to another Neuron

> Use MCP without administering the remote deployment

You do not need access to the Neuron, Neuro-Ledger, or IoTBroker source repositories. You do need the remote Neuron's operator to enable access.

## Request a connection profile

Ask for all of these values together:

```text theme={null}
Neuron URL
Exact MCP endpoint
OAuth client ID, or confirmation that DCR is enabled
Allowed OAuth scopes
Sign-in instructions
Test request that should succeed
```

An endpoint URL by itself is insufficient. An OAuth client without an assigned role is also insufficient.

## Connect

Use the supplied values in [Connect Codex](/mcp/quickstart). Codex performs OAuth login in the browser; the operator should not send you a shared bearer token.

## When access is missing

The operator must complete [Enable MCP access](/mcp/connect-a-client). There is no client-side command that can create Neuron privileges or bypass a disabled client-registration flow.

## Keep environments separate

Use a different Codex MCP entry for each Neuron and capability:

```text theme={null}
neuron-dev-files
neuron-test-files
neuron-test-events
```

This makes the target visible before a tool call and reduces accidental changes in the wrong environment.