Claude Intercom

Agent Intercom is a cross-harness, same-machine messaging system for coding agents. Its Pi, Codex, Claude Code, and OpenCode adapters share one local broker and protocol, so sessions can discover and message each other regardless of which harness they run in.

Harness	Repository
Pi	agent-intercom-pi
Codex	agent-intercom-codex
Claude Code	agent-intercom-claude
OpenCode	agent-intercom-opencode

Origin and thanks

Agent Intercom grew from Nico Bailon's original pi-intercom. A sincere thank you to Nico and the original contributors for creating the Pi extension and the foundation this cross-harness family builds on.

This repository contains the Claude Code adapter. Version 0.2 uses the shared strict pi-intercom protocol v3. Any adapter may start the broker first; incompatible legacy brokers are detected and replaced. Sends are retained in a durable per-session outbox and replayed after reconnect, while receiver acknowledgement distinguishes broker acceptance from durable receipt.

When running cci or ccim in an attached terminal, press Alt+M to choose a connected session and send it a message, or Alt+I to copy that worker's intercom contact target. The MCP plugin cannot register native Claude Code keyboard shortcuts because Claude Code does not expose plugin keybinding registration; the plugin instead provides /claude-intercom:intercom and /claude-intercom:intercom-id. Detached worker-daemon mode has no terminal shortcuts.

Claude Intercom adds local messaging between Claude Code, Codex, Pi, OpenCode, and other coding-agent sessions on the same machine. It speaks the same local broker protocol as pi-intercom and codex-intercom, so sessions can discover each other, send updates, ask blocking questions, read pending messages, and reply to asks across all four supported harnesses.

The project has two related pieces:

• claude-intercom-mcp: an MCP server that exposes intercom tools inside a normal Claude Code session.
• cci / claude-intercom-worker: a wakeable Claude worker. It registers an intercom identity, and when another session sends it work, it starts a fresh headless claude -p turn that resumes the worker's own conversation — so the worker can read files, run commands, edit code, and reply on its own.

Use plain MCP when you only need tools inside an already-active Claude turn. Use a wakeable worker when you want another session to wake Claude automatically and have it act with real system access.

Status

Preview. This is the Claude-side adapter, built alongside pi-intercom and codex-intercom.

A plain Claude Code MCP session does not receive unsolicited visible turns. Incoming messages are queued while the MCP server is running; call intercom_pending to read them. Wake-on-message workflows use cci / claude-intercom-worker.

How Claude gets woken

Claude Code has no long-lived programmatic "app-server" the way Codex does, so the worker uses the most robust primitive available: the headless CLI.

1. The worker registers an intercom identity on the local broker and idles.
2. When a message arrives, the worker runs claude -p --output-format json --resume <session-id> ..., feeding the message text on stdin.
3. Claude runs a full turn — it can use Bash, Read, Edit, and every other Claude Code tool, subject to the worker's permission mode — and prints a final result plus a stable session_id.
4. The worker persists that session_id so the next message resumes the same conversation, and (for blocking asks) sends the final assistant message back to the asker as the reply.

This gives a woken worker genuine access to the system while keeping each worker a continuous, resumable conversation. You can attach to a worker's conversation at any time with claude --resume <session-id>.

Alternative for live sessions: community tools such as claude-code-inter-session deliver messages into an already-running session using Claude Code's Monitor tool, and Claude Code's experimental Channels feature can push notifications over MCP stdio. Those wake a session you are actively watching; the headless worker here wakes an autonomous background worker with full tool access and needs no experimental features. See docs/wake-mechanisms.md.

Install

Install the package so the command-line entry points are on PATH:

npm install -g github:dataforxyz/agent-intercom-claude

This provides:

• claude-intercom-mcp
• claude-intercom-worker
• cci — start a normal wakeable worker
• ccim — start a minimal wakeable worker (cci --minimal)

cci and ccim are the recommended entry points when you want an attached, wakeable Claude session. Unlike a plain MCP session or a detached headless worker, the attached wrappers provide the Alt+M session picker/message composer and the Alt+I contact-copy shortcut; they also keep an intercom identity online so another agent can wake the worker. If you use the same worker profiles repeatedly, add memorable shell aliases with your own portable project paths and stable IDs:

alias claude-reviewer='cci --cwd "$HOME/src/my-project" --name reviewer --id reviewer'
alias claude-reviewer-min='ccim --cwd "$HOME/src/my-project" --name reviewer-min --id reviewer-min'

Put aliases in your shell startup file (for example ~/.bashrc or ~/.zshrc). They are optional convenience shortcuts: the installed cci and ccim commands work directly, but aliases make stable identities and project-specific defaults easier to reuse without copying a long command.

Then add the MCP server to Claude Code:

claude mcp add claude-intercom -- claude-intercom-mcp

Optional identity variables can be attached at registration time:

claude mcp add claude-planner \
  --env CLAUDE_INTERCOM_NAME=planner \
  --env CLAUDE_INTERCOM_SESSION_ID=claude-planner \
  --env CLAUDE_INTERCOM_MODEL=opus \
  -- claude-intercom-mcp

Plugin Use

The repo also ships Claude Code plugin metadata:

• .claude-plugin/plugin.json
• .mcp.json
• skills/claude-intercom/SKILL.md
• commands/intercom.md and commands/intercom-id.md

The plugin packages the MCP server and the bundled claude-intercom skill (which gives Claude copy-paste coordination patterns). It also installs these Claude Code slash commands:

• /claude-intercom:intercom [target and message] — list sessions and send a message. Without arguments, Claude asks which peer to contact and what to send.
• /claude-intercom:intercom-id — print this session's stable, copyable intercom target.

Claude custom commands are model-driven prompt commands, not native modal UI. Claude namespaces plugin commands by plugin name, so an installed plugin cannot claim the unqualified /intercom command globally. They call the same MCP tools and work in a normal Claude Code session, but only the attached cci/ccim wrappers can own the terminal and provide an immediate Alt+M picker. Load the plugin for a single session with --plugin-dir:

claude --plugin-dir /path/to/agent-intercom-claude      # this session only

For the minimal tool surface, prefer plain MCP registration (claude mcp add claude-intercom -- claude-intercom-mcp) so you get the intercom tools without the skill.

Tools

• intercom_whoami: show this session's intercom ID, name, cwd, and model.
• intercom_status: show connection status and pending message counts.
• intercom_list: list local Pi, Codex, and Claude sessions.
• intercom_set_summary: publish a short discoverable status.
• intercom_send: send a non-blocking message.
• intercom_ask: send a question and wait for the target's reply.
• intercom_pending: read queued inbound messages and unresolved asks.
• intercom_reply: reply to a pending inbound ask.

Example:

intercom_list({ scope: "machine" })

intercom_ask({
  to: "worker-a",
  message: "Please inspect the failing test and reply with the likely cause.",
  timeout_ms: 45000
})

Blocking asks default to a short bounded wait and reject waits over 120 seconds. For longer work, use intercom_send and check later with intercom_pending.

Wakeable Workers With cci

cci (Claude Code Intercom) starts a single wakeable worker in the foreground. It registers the worker on the broker. For every inbound message, the attached terminal visibly prints the sender and message, a working indicator, and the final Claude result or error. Blocking asks still receive that final result as their automatic intercom reply. Press Alt+M for a numbered list of connected peers, then choose one and enter a message. Press Alt+I to copy the worker's contact target.

This is an attached worker console, not Claude Code's interactive TUI: woken turns run through claude -p, and their final output is mirrored into the console. To continue or inspect the full Claude conversation, run claude --resume <session-id> using the session ID printed with the completed turn. ccim has the same visible wake behavior and shortcuts.

Start a named worker:

cci --name worker-a --id worker-a

Flags (all optional; ccim accepts the same set):

Flag	Meaning
--name <name>	Discoverable session name other sessions target
--id <id>	Stable intercom session id (defaults to a git-derived id)
--cwd <dir>	Working directory for the worker's turns (default: cwd)
--model <model>	Model for woken turns (opus, sonnet, haiku, or a full id)
--instructions <text>	System-prompt guidance appended to every woken turn
--tui / --live	Run as a LIVE interactive Claude session woken in place (see below) instead of a headless claude -p worker
--minimal / --bare	Run woken turns with --safe-mode (see below); implied by ccim (ignored with --tui)
--safe	Use standard permission prompts instead of the yolo default
--permission-mode <mode>	Explicit permission mode (acceptEdits, plan, …)
--add-dir <dir>	Extra directory the worker may access (repeatable)
--mcp-config <json|file>	Extra MCP servers for woken turns (e.g. to give the worker intercom tools)
--state <path>	Where to persist the worker's session id (default under ~/.pi/agent/intercom/)
--claude <cmd>	Claude Code executable to invoke (default claude)

cci --cwd /path/to/project --instructions "Reply tersely. Ask before destructive changes."
cci --model opus --name reviewer --id reviewer
cci --safe --name safe-worker --id safe-worker      # standard permission prompts instead of yolo
cci --add-dir ../shared-lib --name worker-a --id worker-a

By default cci runs the woken turns with --dangerously-skip-permissions so the worker can actually act on the system in headless mode (headless turns cannot answer interactive permission prompts). Use --safe to switch to the standard permission mode, or --permission-mode <mode> to choose one explicitly. Only run yolo workers on a machine account you trust.

Live TUI Mode (cci --tui)

Default cci is a headless worker: each message spawns a claude -p turn. With --tui, cci instead opens a live interactive Claude session that you sit in and that is woken in place — the Codex coi experience. Inbound intercom messages are injected into the running session and it replies over the broker; you see everything and can type alongside it.

cci --tui --name worker-a --id worker-a

Claude Code has no Codex-style app-server, so this uses Claude Code's local Monitor mechanism (no Anthropic channel relay — works behind a custom ANTHROPIC_BASE_URL/proxy). Under the hood cci --tui launches claude --plugin-dir <this repo> with an intercom identity in the environment; the bundled plugin supplies:

• the intercom MCP server (registers this session's identity + sends replies),
• a durable inbox the server appends inbound messages to, and
• an auto-armed monitor (monitors/monitors.json) that tails the inbox and injects each new message into the live session.

When someone intercom_asks the session, the woken turn answers with the intercom_reply tool (an appended system prompt explains this). --minimal is ignored here because --safe-mode would disable the very MCP server and monitor this mode relies on.

Requirements/caveats: needs a built checkout (npm run build); requires an interactive terminal (Monitor is interactive-only); and Monitor must be enabled in your Claude Code (it is unavailable when DISABLE_TELEMETRY or CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC is set, or on Bedrock/Vertex/Foundry). See docs/wake-mechanisms.md.

Normal And Minimal Workers

Like Codex's coi (normal) and coim (minimal), cci has a minimal mode. Codex needs a dedicated CODEX_HOME and a hand-written config.toml to strip memories, plugins, skills, and browser surfaces (while keeping multi_agent). Claude Code has this built in: cci --minimal runs every woken turn with Claude Code's --safe-mode, which disables CLAUDE.md, skills, plugins, hooks, and MCP servers while keeping auth, built-in tools (Bash/Read/Edit/…), and permissions working normally. It is the focused-worker profile: less prompt and tool surface, same coding ability.

Subagents are retained in minimal mode. --safe-mode only disables custom agent-type definitions (.claude/agents/), not the built-in Task tool — so a minimal worker can still delegate to general-purpose subagents, matching Codex minimal's multi_agent = true. This is verified end-to-end (test/e2e/minimal-subagent.sh): a minimal worker spawns a subagent that runs a shell command and reports back.

cci and ccim are installed as a matched pair (like Codex's coi and coim): ccim is exactly cci --minimal — same flags, same identity handling, minimal by default. You do not need an alias to enable minimal mode; aliases are useful only for reusable names, IDs, paths, or permission settings.

cci  --name reviewer --id reviewer                 # normal: full config, CLAUDE.md, skills, MCP
ccim --name lean-worker --id lean-worker           # minimal: --safe-mode woken turns
ccim --safe --name lean-safe --id lean-safe        # minimal + standard permission prompts
cci --minimal --name worker-a --id worker-a        # equivalent to `ccim ...`

Because minimal mode disables MCP in the woken turn, a minimal worker cannot use the intercom tools to message other sessions itself — it still receives work and replies normally (the worker daemon captures its final message and sends the reply). Use a normal worker when you want the woken turn to reach out to peers on its own.

Manager And Worker Pattern

Use one Claude Code session as the manager and one or more cci workers.

Launch a worker in tmux:

tmux new-session -d -s worker-a 'cd /path/to/project && cci --name worker-a --id worker-a'

Then, from the manager session, delegate through the intercom tools:

intercom_ask({
  to: "worker-a",
  message: "Create a plan for adding retries to src/api/client.ts, then report your first step.",
  timeout_ms: 60000
})

For non-blocking delegation, use intercom_send and check back with intercom_pending. For a decision you need before continuing, use intercom_ask.

Worker Daemon (multiple workers)

Use claude-intercom-worker when you want one process to publish several configured workers without a launcher per worker.

Create a config:

{
  "statePath": "/path/to/intercom/claude-worker-state.json",
  "claudeCommand": "claude",
  "agents": [
    {
      "id": "claude-worker",
      "name": "claude-worker",
      "cwd": "/path/to/project",
      "model": "sonnet",
      "instructions": "Reply concisely. Ask before making destructive changes.",
      "permissionMode": "bypassPermissions"
    }
  ]
}

Start it:

claude-intercom-worker --config "$HOME/.pi/agent/intercom/claude-worker.json"

Each worker's session_id is persisted in statePath, so later messages resume the same Claude conversation. The daemon reads a single worker's config from the environment when no config file is given (CLAUDE_INTERCOM_WORKER_ID, …_NAME, …_CWD, …_MODEL, …_INSTRUCTIONS, …_STATE).

Environment Variables

Variable	Used by	Purpose
CLAUDE_INTERCOM_NAME	MCP server	Discoverable session name
CLAUDE_INTERCOM_SESSION_ID	MCP server	Stable intercom id
CLAUDE_INTERCOM_MODEL	MCP server	Model label shown to peers
CLAUDE_INTERCOM_CWD / _INSTRUCTIONS	cci / ccim	Defaults for --cwd / --instructions
CLAUDE_INTERCOM_CLAUDE_COMMAND	workers	Claude Code executable (default claude)
CLAUDE_INTERCOM_WORKER_ID / _NAME / _CWD / _MODEL / _INSTRUCTIONS / _STATE	claude-intercom-worker	Single-worker config when no --config file is given
CLAUDE_INTERCOM_WORKER_CONFIG	claude-intercom-worker	Path to the worker config JSON
PI_INTERCOM_ASK_TIMEOUT_MS	all	Default blocking-ask timeout (≤ 120000)
PI_CODING_AGENT_DIR	all	Overrides the ~/.pi/agent base dir (broker socket + config live under it)

The PI_* names are shared with the Pi, Codex, and OpenCode adapters on purpose — all four read the same broker location and ask-timeout so they interoperate.

Development

git clone https://github.com/dataforxyz/agent-intercom-claude.git
cd agent-intercom-claude
npm install
npm run build
npm test

For MCP development, register the TypeScript source directly:

claude mcp add claude-intercom-dev -- npx --no-install tsx ./claude/server.ts

Agent Intercom Compatibility

agent-intercom-pi is the Pi-native adapter with overlays and inline rendering. agent-intercom-codex is the Codex MCP/plugin adapter plus wake-on-message Codex app-server sidecars. This repository, agent-intercom-claude, is the Claude Code MCP/plugin adapter plus wake-on-message headless claude -p workers. agent-intercom-opencode provides the native OpenCode plugin.

All four vendor the compatible local broker/client protocol and share one broker socket, so a single session list spans Pi, Codex, Claude Code, and OpenCode.