discipline

discipline is a plugin for Claude Code from fledgeling-co/fledgeling-plugins. Its manifest loads nothing; the 1 skill it bundles cost 140 tokens per session together, scanned A, original, MIT.

A session-start plugin for reducing repeated context and token use in Claude Opus 5 coding sessions. It provides a fixed 220-token instruction block and evidence supporting its rules, including a benchmark of 106 tasks.

In plain words
What is it for?
Use it to configure token-conscious coding sessions, inspect the evidence behind the defaults, and apply the supplied instruction block.
Why use it?
It targets waste from resending and rereading context, while documenting the trade-offs of compressing agent responses and behavior.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

Good fit Use it to configure token-conscious coding sessions, inspect the evidence behind the defaults, and apply the supplied instruction block.

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Install in Claude Code
/plugin marketplace add fledgeling-co/fledgeling-plugins
/plugin install discipline
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.

Clone the repo
git clone --depth 1 https://github.com/fledgeling-co/fledgeling-plugins

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 discipline

README.md
[![agentmods](https://agentmods.dev/badge/plugins/fledgeling-co/fledgeling-plugins/discipline/github.svg)](https://agentmods.dev/plugins/fledgeling-co/fledgeling-plugins/discipline)
Your own site
<a href="https://agentmods.dev/plugins/fledgeling-co/fledgeling-plugins/discipline"><img src="https://agentmods.dev/badge/plugins/fledgeling-co/fledgeling-plugins/discipline/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 discipline

Your own site · 80×15
<a href="https://agentmods.dev/plugins/fledgeling-co/fledgeling-plugins/discipline"><img src="https://agentmods.dev/badge/plugins/fledgeling-co/fledgeling-plugins/discipline.svg" alt="Reviewed on agentmods" width="80" 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 cost 140 tokens a session between them.
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.
Security

Grade A, and why

discipline 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 1mo 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.

plugins/discipline/.claude-plugin/plugin.json · 18 lines

What it actually says

{
  "name": "discipline",
  "description": "Session-start operating defaults that cut token spend without cutting task success, tuned for Claude Opus 5 agentic coding. Ships a byte-stable 220-token block for the cached system prefix plus the measured evidence behind every clause, including a paired 106-task benchmark showing that caveman-style response compression cost 7.6 points of task score on Opus 5, with 78% of its apparent saving coming from the agent taking fewer steps rather than writing more tersely.",
  "version": "4.3.1",
  "author": {
    "name": "Fledgeling",
    "email": "[email protected]"
  },
  "license": "MIT",
  "keywords": [
    "tokens",
    "cost",
    "prompt-cache",
    "opus-5",
    "agentic-coding"
  ]
}
Contents

What it installs

The manifest is a name and a version. 1 skill travel with it, and installing the plugin installs all of them — 140 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. 1mo ago Changed 0b1cd3cc9f8d
  2. 1mo ago First seen · 18 lines scan A 60cdbb4a0997

Subscribe to this mod's changes

discipline is a plugin published in the GitHub repository fledgeling-co/fledgeling-plugins (2 stars, last pushed 4d 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 2026-08-31.