monitor

monitor is a command for coding agents from HoussemDjeghri/bridger. It costs 13 tokens per session (337 once invoked), scanned A, original, MIT.

A read-only web page showing connected coding-agent sessions, their message threads, and the health of the shared message channel.

In plain words
What is it for?
It is for watching peer activity and message delivery in a browser. It can also stop monitors running for the selected message channel.
Why use it?
It gives you a live view of coordination without reading messages, changing state, or interrupting the sessions.

Command

Installs and runs on its own, but its text points at files inside its plugin — anything it tells you to read at a ${CLAUDE_PLUGIN_ROOT} path is only there once the plugin is installed. Installing the plugin gets both.

Part of the bridger plugin — 1 skill, 8 commands shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add commands/houssemdjeghri/bridger/monitor
Clone the repo
git clone --depth 1 https://github.com/HoussemDjeghri/bridger

Or install bridger, the plugin that ships this one along with the rest of its 1 skill, 8 commands.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for monitor

README.md
[![agentmods](https://agentmods.dev/badge/commands/houssemdjeghri/bridger/monitor.svg)](https://agentmods.dev/commands/houssemdjeghri/bridger/monitor)
Your own site
<a href="https://agentmods.dev/commands/houssemdjeghri/bridger/monitor"><img src="https://agentmods.dev/badge/commands/houssemdjeghri/bridger/monitor.svg" alt="Measured on agentmods" height="20"></a>
Per session 13 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 337 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00013 $0.00337
Opus 5 $0.00006 $0.00169
Sonnet 5 $0.00003 $0.00067
Haiku 4.5 $0.00001 $0.00034

Measured 4d ago against content hash 5fbfddff2c84, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

monitor 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 4d 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.

commands/monitor.md · 33 lines

What it actually says

If $ARGUMENTS contains --stop, run ONLY this and report what it prints — --stop takes no other options, so passing it through the start block below (which adds --no-open) is a usage error, not a stop:

"${CLAUDE_PLUGIN_ROOT}/bin/bridger" monitor --stop

Otherwise start the monitor as a background task, so this session stays usable:

"${CLAUDE_PLUGIN_ROOT}/bin/bridger" monitor --no-open $ARGUMENTS

Report the URL it prints (default http://127.0.0.1:8787) and tell the user to open it. It serves on loopback only and needs python3.

The monitor is read-only: it parses the state files and never writes one, so it does not consume unread messages or advance any cursor. Leaving it running does not affect any session.

It outlives this session on purpose, so killing the background task is not how you stop it — and once this session closes there is no background task left to kill. Use the --stop block at the top, which stops the monitor(s) serving this bus and leaves any monitor on another bus running. A monitor started without --root (or owned by another user) cannot be attributed to a bus from its command line; --stop reports those rather than guessing, and stops nothing.

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. 4d ago First seen · 33 lines · 0 tokens per session scan A 5fbfddff2c84

Subscribe to this mod's changes

monitor is a command published in the GitHub repository HoussemDjeghri/bridger (3 stars, last pushed 12d ago), licensed MIT. It adds 13 tokens to every session and 337 once invoked, about $0.0001 per session on Opus 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.