teernisse dcbaf12f07 feat(server): add conversation mtime tracking for real-time updates
Add conversation_mtime_ns field to session state that tracks the actual
modification time of conversation files. This enables more responsive
dashboard updates by detecting changes that occur between hook events
(e.g., during streaming tool execution).

Changes:
- state.py: Add _get_conversation_mtime() to stat conversation files
  and include mtime_ns in session payloads when available
- conversation.py: Add stable message IDs (claude-{session}-{n} format)
  for React key stability and message deduplication
- control.py: Fix FIFO eviction for dismissed_codex_ids - set.pop()
  removes arbitrary element, now uses dict with insertion-order iteration
- context.py: Update dismissed_codex_ids type from set to dict

The mtime approach complements existing last_event_at tracking:
- last_event_at: Changes on hook events (session boundaries)
- conversation_mtime_ns: Changes on every file write (real-time)

Dashboard can now detect mid-session conversation updates without
waiting for the next hook event.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-02-26 15:23:42 -05:00
2026-02-26 11:39:39 -05:00
2026-02-26 11:39:39 -05:00

AMC — Agent Mission Control

A real-time dashboard for monitoring and interacting with Claude Code sessions.

Overview

AMC provides a unified view of all running Claude Code sessions across projects. It displays session status, conversation history, and pending questions — and allows you to respond directly from the dashboard without switching terminal tabs.

Features

  • Real-time monitoring — Sessions are grouped by status (needs attention, active, starting, done) with 3-second polling
  • Conversation history — View the full chat history for any session, pulled from Claude Code's JSONL logs
  • Response injection — Send responses to agents directly via Zellij pane integration
  • Question detection — Detects both structured AskUserQuestion prompts and prose questions (messages ending with "?")
  • Session lifecycle — Automatically cleans up orphaned sessions and stale event logs

Installation

  1. Clone this repository
  2. Symlink the launcher to your PATH:
ln -s /path/to/amc/bin/amc ~/.local/bin/amc
  1. Configure Claude Code hooks (see Hook Setup)

Usage

amc start   # Start the server and open the dashboard
amc stop    # Stop the server
amc status  # Check if the server is running

The dashboard opens at http://127.0.0.1:7400.

Hook Setup

AMC requires Claude Code hooks to report session state. Add this to your ~/.claude/settings.json:

{
  "hooks": {
    "SessionStart": [
      { "command": "/path/to/amc/bin/amc-hook" }
    ],
    "UserPromptSubmit": [
      { "command": "/path/to/amc/bin/amc-hook" }
    ],
    "Stop": [
      { "command": "/path/to/amc/bin/amc-hook" }
    ],
    "SessionEnd": [
      { "command": "/path/to/amc/bin/amc-hook" }
    ],
    "PreToolUse": [
      { "matcher": "AskUserQuestion", "command": "/path/to/amc/bin/amc-hook" }
    ],
    "PostToolUse": [
      { "matcher": "AskUserQuestion", "command": "/path/to/amc/bin/amc-hook" }
    ]
  }
}

Architecture

┌─────────────────────┐     ┌─────────────────────┐
│   Claude Code       │────▶│   amc-hook          │
│   (hooks)           │     │   (writes state)    │
└─────────────────────┘     └──────────┬──────────┘
                                       │
                                       ▼
                            ┌─────────────────────┐
                            │   ~/.local/share/   │
                            │   amc/sessions/     │
                            │   amc/events/       │
                            └──────────┬──────────┘
                                       │
                                       ▼
┌─────────────────────┐     ┌─────────────────────┐
│   Dashboard         │◀────│   amc-server        │
│   (Preact UI)       │     │   (Python HTTP)     │
└─────────────────────┘     └─────────────────────┘

Components

Component Description
bin/amc Launcher script — start/stop/status commands
bin/amc-server Python HTTP server serving the API and dashboard
bin/amc-hook Hook script called by Claude Code to write session state
dashboard/ Modular Preact dashboard (index.html, components/, lib/, utils/)

Data Storage

All runtime data lives in ~/.local/share/amc/:

Path Contents
sessions/*.json Current session state (one file per session)
events/*.jsonl Event log for each session (append-only)
server.pid PID file for the running server
server.log Server stdout/stderr

API Reference

Method Endpoint Description
GET / Dashboard HTML
GET /api/state All sessions as JSON
GET /api/events/{id} Event timeline for a session
GET /api/conversation/{id}?project_dir=... Conversation history (from Claude Code logs)
POST /api/dismiss/{id} Dismiss (delete) a completed session
POST /api/respond/{id} Send a response to a session

Response Injection

The /api/respond/{id} endpoint injects text into a session's Zellij pane. Request body:

{
  "text": "your response here",
  "freeform": true,
  "optionCount": 3
}
  • text — The response to send
  • freeform — If true, treats as freeform text (selects "Other" option first)
  • optionCount — Number of options in the current question (used for freeform)

Response injection works via:

  1. Zellij plugin (~/.config/zellij/plugins/zellij-send-keys.wasm) — Required for pane-targeted sends and Enter submission
  2. Optional unsafe fallback (AMC_ALLOW_UNSAFE_WRITE_CHARS_FALLBACK=1) — Uses focused-pane write-chars only when explicitly enabled

AMC resolves the Zellij binary from PATH plus common Homebrew locations (/opt/homebrew/bin/zellij, /usr/local/bin/zellij) so response injection still works when started via launchctl.

Session Statuses

Status Meaning
starting Session started, no prompt submitted yet
active Session is processing work
needs_attention Agent is waiting for user input (question or AskUserQuestion)
done Session stopped (can be dismissed)

Cleanup Behavior

  • Orphan sessions: Sessions with missing Zellij sessions in "starting" status are auto-deleted
  • Stale "starting" sessions: Sessions stuck in "starting" for >1 hour are removed
  • Stale event logs: Event logs without matching sessions are deleted after 24 hours
  • SessionEnd: Deletes the session file immediately

Requirements

  • Python 3.8+
  • Zellij (for response injection)
  • Claude Code with hooks support

Testing

Run the server test suite:

python3 -m unittest discover -s tests -v

Zellij Plugin

For pane-targeted response injection (including reliable Enter submission), install the zellij-send-keys plugin:

# Build and install the plugin
# (See zellij-send-keys repository for instructions)

Place the compiled WASM at ~/.config/zellij/plugins/zellij-send-keys.wasm.

License

MIT

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