# phone_opus

`phone_opus` is a deliberately narrow MCP server for consultative Claude Code
calls.

It exposes one blocking domain tool:

- `consult`: run the system `claude` install in print mode, wait for the answer,
  and return the response plus execution metadata
  - pass `session_id` from a previous response to resume that Claude Code conversation

The server keeps the public MCP session in a durable host, isolates the actual
Claude invocation in a disposable worker, and ships standard health and
telemetry surfaces:

- `health_snapshot`
- `telemetry_snapshot`

## Runtime posture

Each `consult` call runs Claude Code with:

- the system `claude` binary
- the normal settings stack, including user-level defaults
- no configured MCP servers (`--strict-mcp-config --mcp-config '{"mcpServers":{}}'`)
- a read-only built-in toolset:
  - `Bash,Read,Grep,Glob,LS,WebFetch,WebSearch`
- `--permission-mode dontAsk`, so only preapproved read-only Bash patterns can
  execute and edit tools never appear in the session

## Development

Run the fast gate with:

```bash
python check.py
```

Run the server locally with:

```bash
cargo run -- mcp serve
```