bus

bus is a skill for Claude Code, Codex from Federated-Industrial-Laboratories/agentbus. It costs 64 tokens per session (1,866 once invoked), scanned A, original, Apache-2.0.

A shared record system for tasks involving multiple coding agents. It stores typed messages and findings in an append-only JSONL file, a plain text file with one JSON record per line.

In plain words
What is it for?
Use it when several agents collaborate or when a multi-stage task needs durable findings. It creates, appends to, checks, searches, and manages the shared run record.
Why use it?
It keeps agents from duplicating work or losing track of who found what, and provides a way to compare and resolve disagreements.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it when several agents collaborate or when a multi-stage task needs durable findings. It creates, appends to, checks, searches, and manages the shared run record.

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Install with agentmods
npx agentmods add skills/federated-industrial-laboratories/agentbus/bus
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.

Any agent
npx skills add Federated-Industrial-Laboratories/agentbus --skill bus
Clone the repo
git clone --depth 1 https://github.com/Federated-Industrial-Laboratories/agentbus

Made for: Claude Code, Codex.

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 bus

README.md
[![agentmods](https://agentmods.dev/badge/skills/federated-industrial-laboratories/agentbus/bus/github.svg)](https://agentmods.dev/skills/federated-industrial-laboratories/agentbus/bus)
Your own site
<a href="https://agentmods.dev/skills/federated-industrial-laboratories/agentbus/bus"><img src="https://agentmods.dev/badge/skills/federated-industrial-laboratories/agentbus/bus/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for bus

Your own site · 80×15
<a href="https://agentmods.dev/skills/federated-industrial-laboratories/agentbus/bus"><img src="https://agentmods.dev/badge/skills/federated-industrial-laboratories/agentbus/bus.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 64 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,866 The whole file, excluding the scripts and references it only reads on demand.
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 $0.00064 $0.01866
Opus 5 $0.00032 $0.00933
Sonnet 5 $0.00013 $0.00373
Haiku 4.5 $0.00006 $0.00187

Measured 11d ago against content hash 1e659bfa04c7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

bus 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 11d 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.

adapters/claude-code/skills/bus/SKILL.md · 168 lines

How it starts

The opening of the file, as written. The whole thing — 168 lines — stays where its author put it; the contents beside it link to each section on GitHub.

The agent bus

Parallel agents are blind to one another by default. They duplicate findings, rank the same result differently with no channel to reconcile, and return transcripts instead of claims. The bus is the correction: one shared, append-only JSONL file per run, which every agent and the orchestrator write to as they work.

The tools are bus-new, bus-append, bus-lint, bus-embed and bus-model. They must be on PATH, or invoked by path from the agentbus checkout. SCHEMA.md in that checkout is the codebook and is the authority on anything below.

All five are yours to run. bus-embed and bus-model in particular are part of normal work, not setup performed by a human beforehand: you run bus-embed near and bus-embed dups to check whether a finding already exists, and you run bus-model status and bus-model fetch to make sure the vector lane is available in the first place.

When to open a run

Open a run when a session is about to dispatch work to two or more agents, or when it will run several substantial phases whose findings must survive compaction.

bus-model status            # is the embedding model installed and ready?
bus-new <run-name>          # prints the path it created

If bus-model status reports that the active model is not installed, install it yourself with bus-model fetch all-MiniLM-L6-v2 before dispatching. It is an 87 MiB download that takes a few seconds, and without it the duplicate check below falls back to reading the file by hand.

The run file lands in $AGENTBUS_DIR, or in ./bus/runs if that variable is unset, named <YYYY-MM-DD>-<run-name>.jsonl. Pass that path to every agent you dispatch, and tell each one to read it before starting.

Do not open a run for single-agent work. A bus with one writer is overhead with no reader.

Appending

Every agent appends as it works, and so does the orchestrator. An orchestrator that reads the bus without writing to it leaves the record one-sided.

bus-append <file> --agent <name> --type <type> --body '<json object>'

Read the full file on GitHub · 168 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. 11d ago First seen · 168 lines · 64 tokens per session scan A 1e659bfa04c7

Subscribe to this mod's changes

bus is a skill published in the GitHub repository Federated-Industrial-Laboratories/agentbus (5 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 64 tokens to every session and 1,866 once invoked, about $0.0003 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.

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