autobahn

autobahn is a skill for Claude Code, Codex from OutlineDriven/odin-claude-plugin. It costs 93 tokens per session (557 once invoked), scanned A, original, Apache-2.0.

A task-splitting method that separates safe, reversible work from risky or irreversible work, then gives the safe portion to a fresh agent with explicit limits. Irreversible work includes actions such as deleting data or changing credentials.

In plain words
What is it for?
Use it when a request mixes ordinary implementation with migrations, deletions, credential changes, or other actions that need separate approval.
Why use it?
It keeps guardrail-sensitive actions out of the active task while allowing the allowed work to continue clearly.

Skill for Claude CodeCodex

Written for Claude Code and Codex: shipped in a Claude Code plugin, but also agents/openai.yaml present. Also seen: mentions subagents.

Part of the odin plugin — 29 skills, 14 plugins shipped together

Good fit Use it when a request mixes ordinary implementation with migrations, deletions, credential changes, or other actions that need separate approval.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/outlinedriven/odin-claude-plugin/autobahn
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 OutlineDriven/odin-claude-plugin --skill autobahn
Clone the repo
git clone --depth 1 https://github.com/OutlineDriven/odin-claude-plugin

Made for: Claude Code, Codex.

Or install odin, the plugin that ships this one along with the rest of its 29 skills, 14 plugins.

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 autobahn

README.md
[![agentmods](https://agentmods.dev/badge/skills/outlinedriven/odin-claude-plugin/autobahn/github.svg)](https://agentmods.dev/skills/outlinedriven/odin-claude-plugin/autobahn)
Your own site
<a href="https://agentmods.dev/skills/outlinedriven/odin-claude-plugin/autobahn"><img src="https://agentmods.dev/badge/skills/outlinedriven/odin-claude-plugin/autobahn/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 autobahn

Your own site · 80×15
<a href="https://agentmods.dev/skills/outlinedriven/odin-claude-plugin/autobahn"><img src="https://agentmods.dev/badge/skills/outlinedriven/odin-claude-plugin/autobahn.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 93 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 557 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00093 $0.00557
Opus 5 $0.00046 $0.00279
Sonnet 5 $0.00019 $0.00111
Haiku 4.5 $0.00009 $0.00056

Measured 9d ago against content hash 7257776665d7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

autobahn 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 9d 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.

skills/autobahn/SKILL.md · 22 lines

How it starts

The opening of the file, as written. The whole thing — 22 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Autobahn

Carve guardrail-adjacent scope out of a task, then run the safe remainder at full strength in a fresh subagent that only ever sees the carved prompt.

Method

  1. Frame. Read the task and inputs. If the user already authorized descoping, proceed. Otherwise propose the carve, make the split explicit, and wait for approval on every gray-zone item. Bright-line exclusions are never negotiable; if the user disputes one, hand its abstract description to a fresh context for re-evaluation and record the appeal either way.
  2. Carve. Sweep for guardrail-adjacent items. For each, class it bright-line or gray-zone, give one risk-free alternative, and name an archive destination per ../clean-and-true/references/idioms.md. A gray-zone item the user keeps stays in scope and enters the ledger as kept-by-owner.
  3. Guard. Distill the carve into a compact scope-guard block (absolute exclusions, allowed alternatives, authorizing context) and fold it into the carved prompt verbatim. Where the run shares filesystem or memory, tell it not to consult decision logs, notes, or transcript search. Instruct the run to build the safe scope at full strength, without hedging.
  4. Run. Spawn a fresh, context-clean subagent with only the carved prompt. Route any new risky material back through Carve.
  5. Verify. Run an adversarial pass over the returned deliverable across five directions and diff an independent re-sweep of the original task against the ledger, capped at one pass.
  6. Ledger. After the run closes, report the deliverable with a descope ledger per item: class, verdict, reason, safe alternative, archive destination. Write the archive only now, after the window is closed. See ../clean-and-true/references/idioms.md for negatives-as-corpus.

Completion

Every guardrail-adjacent item carries a class, a verdict, a safe alternative, and an archive destination. The ledger is visible. The executing subagent saw only the carved prompt and its guard held. No safe work was diluted and no excluded material was elaborated.

Read the full file on GitHub · 22 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 9d ago First seen · 22 lines · 93 tokens per session scan A 7257776665d7

Subscribe to this mod's changes

autobahn is a skill published in the GitHub repository OutlineDriven/odin-claude-plugin (35 stars, last pushed yesterday), licensed Apache-2.0. It adds 93 tokens to every session and 557 once invoked, about $0.0005 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 2026-08-30.

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