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claude-fleet-monitor: Instructions file for Claude Code

CLAUDE.md

claude-fleet-monitor CLAUDE.md is an instructions file for Claude Code from andre-motta/claude-fleet-monitor. It costs 2,604 tokens per session, scanned A, original, MIT.

Repository instructions for Claude Fleet Monitor, a Python tool that tracks Claude Code and Codex sessions. It describes how session data, terminal connections, monitoring screens, and integrations fit together.

In plain words
What is it for?
Use them when working on session discovery, terminal support, the monitoring interface, or the tool's integrations.
Why use it?
They give coding agents the architecture and design decisions needed to change the monitor without breaking how sessions are collected or displayed.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: reads .claude/ paths; mentions Claude Code; mentions Codex.

This is andre-motta/claude-fleet-monitor's own configuration. It tells Claude Code how to work on claude-fleet-monitor itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything claude-fleet-monitor configures →

not rated 2repo changed 26d ago A scan 2,604 tokens original MIT archived
View source ↗ andre-motta/claude-fleet-monitor
Reuse

Borrowing it

Nothing to install: this file belongs to andre-motta/claude-fleet-monitor. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/andre-motta/claude-fleet-monitor/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/andre-motta/claude-fleet-monitor

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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Per session 2,604 This file is loaded in full into every session.
When invoked 2,604 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.02604 $0.02604
Opus 5.5 $0.01042 $0.01042
Sonnet 5.5 $0.00521 $0.00521
Haiku 4.5 $0.00260 $0.00260

Measured 26d ago against content hash 5f10ba4636e9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

claude-fleet-monitor CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 26d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 109 lines

How it starts

The opening of the file, as written. The whole thing — 109 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Claude Fleet Monitor

Fleet monitoring for Claude Code and Codex sessions. The core is pure Python and cross-platform. The approved Pi integration may package an optional dependency-free JavaScript extension.

See docs/SDLC.md for the adopted agent workflow, approval gates and active planning.

Architecture

Claude Code sessions --\
                       +--> hook.py --> ~/.claude/fleet/*.json
Codex sessions --------/
                            |                 |
                    captures terminal    +-----+-----+------+------+
                    type + env vars      |     |     |      |      |
                                    discovery mcp   tui   focus  tongs
                                      .py   _server .py    .py  _plugin
                                             .py     |           .py
                                                  widgets/   views/
                                               session_table fleet_screen
                                                  .py         .py
                                                          |
                                                   terminal_apis/
                                                     konsole.py
                                                     tmux.py
                                                     gnome.py
                                                     iterm2.py
                                                     ...

Modules

  • hook.py: Claude Code and Codex hook handler. Receives events via stdin JSON, writes session status to the fleet directory, and tags the source agent. Captures terminal type and PID per session.
  • discovery.py: Shared module. Cross-platform process discovery (/proc on Linux, lsof/ps on macOS, tasklist on Windows). Reads/deduplicates/cleans session files. Used by all consumers.
  • models.py: Typed data models. SessionStatus enum, FleetSession frozen dataclass, parse_session() converter, format_age() utility.
  • mcp_server.py: FastMCP server exposing fleet tools to Claude Code and Codex sessions.
  • tui.py: Textual-based interactive dashboard (FleetMonitorApp). Polling, search/filter, desktop notifications, session focus.
  • widgets/session_table.py: SessionTable(DataTable) widget with status-colored rows. Shared between standalone TUI and tongs screen.
  • views/fleet_screen.py: FleetScreen(Screen) for embedding in tongs. Same features as standalone but escape pops back.
  • tongs_plugin.py: FleetMonitorPlugin(TongsPlugin) ABC implementation. Optional tongs dependency. Registers command palette entry and screen.
  • focus.py: Session lookup and PID resolution. Delegates to terminal APIs for actual focus.
  • cli.py: Entry point for claude-fleet command. Installs Claude Code and Codex hooks and MCP configuration, then delegates to tui/focus/status.

Read the full file on GitHub · 109 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 26d ago Changed · +4 lines · +891 tokens per session 5f10ba4636e9
  2. 27d ago Changed · +5 lines · +495 tokens per session 5a99913808d9
  3. 2mo ago Changed · +4 lines · +67 tokens per session 80646c280185
  4. 2mo ago First seen · 96 lines · 1,151 tokens per session scan A e2f36d219f47

Subscribe to this mod's changes

claude-fleet-monitor CLAUDE.md is an instructions file published in the GitHub repository andre-motta/claude-fleet-monitor (2 stars, last pushed 3d ago), licensed MIT. It adds 2,604 tokens to every session, about $0.0104 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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