agent-baton

agent-baton is a plugin for Claude Code from oborchers/fractional-cto. Its manifest loads nothing; the 1 skill, 2 commands, 1 hook it bundles cost 238 tokens per session together, scanned A, original, MIT.

A protocol for passing work between two independent AI-agent processes that do not share a conversation. One process creates a completion signal file, called a baton, and the other waits for it before starting dependent work.

In plain words
What is it for?
Use it to signal task completion, pass an optional payload, wait for a predecessor, and chain dependent work across different agent systems.
Why use it?
It coordinates tasks without requiring both agents to run in the same session. A deadline prevents the waiting process from waiting indefinitely.

Plugin for Claude Code

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.

Claude Code
/plugin marketplace add oborchers/fractional-cto
agentmods
npx agentmods add plugins/oborchers/fractional-cto/agent-baton
Clone the repo
git clone --depth 1 https://github.com/oborchers/fractional-cto

Made for: Claude Code.

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 agent-baton

README.md
[![agentmods](https://agentmods.dev/badge/plugins/oborchers/fractional-cto/agent-baton.svg)](https://agentmods.dev/plugins/oborchers/fractional-cto/agent-baton)
Your own site
<a href="https://agentmods.dev/plugins/oborchers/fractional-cto/agent-baton"><img src="https://agentmods.dev/badge/plugins/oborchers/fractional-cto/agent-baton.svg" alt="Measured on agentmods" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 1 skill, 2 commands, 1 hook cost 238 tokens a session between them.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

agent-baton 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 5d 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.

agent-baton/.claude-plugin/plugin.json · 26 lines

What it actually says

{
  "name": "agent-baton",
  "version": "0.2.0",
  "description": "Chain work across two independent agent processes that share no parent session. One agent passes a baton (a completion signal file) when done, optionally carrying a free-form payload; another waits for it, with a deadline, then starts its dependent task. Harness-agnostic protocol — each agent picks its own waiting mechanism. The baton tells you when, never what: the payload is content, not instructions. Provides /baton-pass and /baton-wait.",
  "author": {
    "name": "Dr. Oliver Borchers"
  },
  "repository": "https://github.com/oborchers/fractional-cto",
  "license": "MIT",
  "keywords": [
    "agent-baton",
    "baton",
    "handoff",
    "takeover",
    "sentinel-file",
    "payload",
    "signal",
    "agent-coordination",
    "agent-chaining",
    "multi-agent",
    "cross-harness",
    "portable-skill",
    "claude-code"
  ]
}
Contents

What it installs

The manifest is a name and a version. 1 skill, 2 commands, 1 hook travel with it, and installing the plugin installs all of them — 238 tokens a session between them. Each is measured on its own page, and each can be installed alone.

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. 5d ago First seen · 26 lines scan A 6be6f2e1675c

Subscribe to this mod's changes

agent-baton is a plugin published in the GitHub repository oborchers/fractional-cto (29 stars, last pushed 29d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-08-30.