claude-code

Delegate coding to Claude Code CLI (features, PRs).

# Claude Code — Hermes Orchestration Guide

Delegate coding tasks to [Claude Code](https://code.claude.com/docs/en/cli-reference) (Anthropic's autonomous coding agent CLI) via the Hermes terminal. Claude Code v2.x can read files, write code, run shell commands, spawn subagents, and manage git workflows autonomously.

## Prerequisites

- **Install:** `npm install -g @anthropic-ai/claude-code`
- **Auth:** run `claude` once to log in (browser OAuth for Pro/Max, or set `ANTHROPIC_API_KEY`)
- **Console auth:** `claude auth login --console` for API key billing
- **SSO auth:** `claude auth login --sso` for Enterprise
- **Check status:** `claude auth status` (JSON) or `claude auth status --text` (human-readable)
- **Health check:** `claude doctor` — checks auto-updater and installation health
- **Version check:** `claude --version` (requires v2.x+)
- **Update:** `claude update` or `claude upgrade`

## Two Orchestration Modes

Hermes interacts with Claude Code in two fundamentally different ways. Choose based on the task.

### Mode 1: Print Mode (`-p`) — Non-Interactive (PREFERRED for most tasks)

Print mode runs a one-shot task, returns the result, and exits. No PTY needed. No interactive prompts. This is the cleanest integration path.

```
terminal(command="claude -p 'Add error handling to all API calls in src/' --allowedTools 'Read,Edit' --max-turns 10", workdir="/path/to/project", timeout=120)
```

**When to use print mode:**
- One-shot coding tasks (fix a bug, add a feature, refactor)
- CI/CD automation and scripting
- Structured data extraction with `--json-schema`
- Piped input processing (`cat file | claude -p "analyze this"`)
- Any task where you don't need multi-turn conversation

**Print mode skips ALL interactive dialogs** — no workspace trust prompt, no permission confirmations. This makes it ideal for automation.

### Mode 2: Interactive PTY via tmux — Multi-Turn Sessions

Interactive mode gives you a full conversational REPL where you can send follow-up prompts, use slash commands, and watch Claude work in real time. **Requires tmux orchestration.**

```
# Start a tmux session
terminal(command="tmux new-session -d -s claude-work -x 140 -y 40")

# Launch Claude Code inside it
terminal(command="tmux send-keys -t claude-work 'cd /path/to/project && claude' Enter")

# Wait for startup, then send your task
# (after ~3-5 seconds for the welcome screen)
terminal(command="sleep 5 && tmux send-keys -t claude-work 'Refactor the auth module to use JWT tokens' Enter")

# Monitor progress by capturing the pane
terminal(command="sleep 15 && tmux capture-pane -t claude-work -p -S -50")

# Send follow-up tasks
terminal(command="tmux send-keys -t claude-work 'Now add unit tests for the new JWT code' Enter")

# Exit when done
terminal(command="tmux send-keys -t claude-work '/exit' Enter")
```

**When to use interactive mode:**
- Multi-turn iterative work (refactor → review → fix → test cycle)
- Tasks requiring human-in-the-loop decisions
- Exploratory coding sessions
- When you need to use Claude's slash commands (`/compact`, `/review`, `/model`)

## PTY Dialog Handling (CRITICAL for Interactive Mode)

Claude Code presents up to two confirmation dialogs on first launch. You MUST handle these via tmux send-keys:

### Dialog 1: Workspace Trust (first visit to a directory)
```
❯ 1. Yes, I trust this folder    ← DEFAULT (just press Enter)
  2. No, exit
```
**Handling:** `tmux send-keys -t <session> Enter` — default selection is correct.

### Dialog 2: Bypass Permissions Warning (only with --dangerously-skip-permissions)
```
❯ 1. No, exit                    ← DEFAULT (WRONG choice!)
  2. Yes, I accept
```
**Handling:** Must navigate DOWN first, then Enter:
```
tmux send-keys -t <session> Down && sleep 0.3 && tmux send-keys -t <session> Enter
```

### Robust Dialog Handling Pattern
```
# Launch with permissions bypass
terminal(command="tmux send-keys -t claude-work 'claude --dangerously-skip-permissions \"your task\"' Enter")

# Handle trust dialog (Enter for default "Yes")
terminal(command="sleep 4 && tmux send-keys -t claude-work Enter")

# Handle permissions dialog (Down then Enter for "Yes, I accept")
terminal(command="sleep 3 && tmux send-keys -t claude-work Down && sleep 0.3 && tmux send-keys -t claude-work Enter")

# Now wait for Claude to work
terminal(command="sleep 15 && tmux capture-pane -t claude-work -p -S -60")
```

**Note:** After the first trust acceptance for a directory, the trust dialog won't appear again. Only the permissions dialog recurs each time you use `--dangerously-skip-permissions`.

## CLI Subcommands

| Subcommand | Purpose |
|------------|---------|
| `claude` | Start interactive REPL |
| `claude "query"` | Start REPL with initial prompt |
| `claude -p "query"` | Print mode (non-interactive, exits when done) |
| `cat file \| claude -p "query"` | Pipe content as stdin context |
| `claude -c` | Continue the most recent conversation in this directory |
| `claude -r "id"` | Resume a specific session by ID or name |
| `claude auth login` | Sign in (add `--console` for API billing, `--sso` for Enterprise) |
| `claude auth status` | Check login status (returns JSON; `--text` for human-readable) |
| `claude mcp add <name> -- <cmd>` | Add an MCP server |
| `claude mcp list` | List configured MCP servers |
| `claude mcp remove <name>` | Remove an MCP server |
| `claude agents` | List configured agents |
| `claude doctor` | Run health checks on installation and auto-updater |
| `claude update` / `claude upgrade` | Update Claude Code to latest version |
| `claude remote-control` | Start server to control Claude from claude.ai or mobile app |
| `claude install [target]` | Install native build (stable, latest, or specific version) |
| `claude setup-token` | Set up long-lived auth token (requires subscription) |
| `claude plugin` / `claude plugins` | Manage Claude Code plugins |
| `claude auto-mode` | Inspect auto mode classifier configuration |

## Print Mode Deep Dive

### Structured JSON Output
```
terminal(command="claude -p 'Analyze auth.py for security issues' --output-format json --max-turns 5", workdir="/project", timeout=120)
```

Returns a JSON object with:
```json
{
  "type": "result",
  "subtype": "success",
  "result": "The analysis text...",
  "session_id": "75e2167f-...",
  "num_turns": 3,
  "total_cost_usd": 0.0787,
  "duration_ms": 10276,
  "stop_reason": "end_turn",
  "terminal_reason": "completed",
  "usage": { "input_tokens": 5, "output_tokens": 603, ... },
  "modelUsage": { "claude-sonnet-4-6": { "costUSD": 0.078, "contextWindow": 200000 } }
}
```

**Key fields:** `session_id` for resumption, `num_turns` for agentic loop count, `total_cost_usd` for spend tracking, `subtype` for success/error detection (`success`, `error_max_turns`, `error_budget`).

### Streaming JSON Output
For real-time token streaming, use `stream-json` with `--verbose`:
```
terminal(command="claude -p 'Write a summary' --output-format stream-json --verbose --include-partial-messages", timeout=60)
```

Returns newline-delimited JSON events. Filter with jq for live text:
```
claude -p "Explain X" --output-format stream-json --verbose --include-partial-messages | \
  jq -rj 'select(.type == "stream_event" and .event.delta.type? == "text_delta") | .event.delta.text'
```

Stream events include `system/api_retry` with `attempt`, `max_retries`, and `error` fields (e.g., `rate_limit`, `billing_error`).

### Bidirectional Streaming
For real-time input AND output streaming:
```
claude -p "task" --input-format stream-json --output-format stream-json --replay-user-messages
```
`--replay-user-messages` re-emits user messages on stdout for acknowledgment.

### Piped Input
```
# Pipe a file for analysis
terminal(command="cat src/auth.py | claude -p 'Review this code for bugs' --max-turns 1", timeout=60)

# Pipe multiple files
terminal(command="cat src/*.py | claude -p 'Find all TODO comments' --max-turns 1", timeout=60)

# Pipe command output
terminal(command="git diff HEAD