lockstep-version-guard

lockstep-version-guard is a skill for Claude Code, Codex from OutlineDriven/odin-claude-plugin. It costs 59 tokens per session (782 once invoked), scanned A, original, Apache-2.0.

A read-only release check that compares plugin version files with one canonical version. It reports every checked file and fails when any version differs.

In plain words
What is it for?
It is for enforcing one shared version across the 28 ODIN plugins at a release gate.
Why use it?
It catches inconsistent release metadata before a release proceeds. It does not change the files it checks.

Skill for Claude CodeCodex

Written for Claude Code and Codex: disable-model-invocation in frontmatter, but also agents/openai.yaml present.

Part of the odin-agent plugin — 47 skills 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 skills/outlinedriven/odin-claude-plugin/lockstep-version-guard
Any agent
npx skills add OutlineDriven/odin-claude-plugin --skill lockstep-version-guard
Clone the repo
git clone --depth 1 https://github.com/OutlineDriven/odin-claude-plugin

Made for: Claude Code, Codex.

Or install odin-agent, the plugin that ships this one along with the rest of its 47 skills.

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 lockstep-version-guard

README.md
[![agentmods](https://agentmods.dev/badge/skills/outlinedriven/odin-claude-plugin/lockstep-version-guard.svg)](https://agentmods.dev/skills/outlinedriven/odin-claude-plugin/lockstep-version-guard)
Your own site
<a href="https://agentmods.dev/skills/outlinedriven/odin-claude-plugin/lockstep-version-guard"><img src="https://agentmods.dev/badge/skills/outlinedriven/odin-claude-plugin/lockstep-version-guard.svg" alt="Measured on agentmods" height="20"></a>
Per session 59 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 782 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 5.1 $0.00059 $0.00782
Opus 5 $0.00030 $0.00391
Sonnet 5 $0.00012 $0.00156
Haiku 4.5 $0.00006 $0.00078

Measured yesterday against content hash 8084b2745435, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

lockstep-version-guard 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 yesterday.

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/odin-agent/skills/lockstep-version-guard/SKILL.md · 42 lines

How it starts

The opening of the file, as written. The whole thing — 42 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Lockstep version guard

Contract

Field Bound contract
Trigger A human explicitly invokes the guard at a release gate.
Authority Read-only: inspect local release metadata without changing files, version control, credentials, paid services, published artifacts, deployments, or remote state.
Side effect None; the check writes no project state.
Done Exit 0 when every checked version equals the canonical version; otherwise exit 1 with a per-file listing.

Inputs

Supply the release root. The identity ledger catalog/plugins.json under it must provide the canonical releaseVersion and enumerate the 28 ODIN package members, each identifying its version-bearing plugins/<id>/plugin.json via its directory field. No input is optional.

Procedure

  1. Resolve the supplied release root without changing the working tree. Reject a missing, unreadable, or non-directory root. Done when: the release root is resolved and confirmed as a readable directory.

  2. Read the canonical version from the releaseVersion field of catalog/plugins.json. Reject a missing, non-string, or empty version. Done when: the canonical version is read and confirmed as a non-empty string.

  3. Read the entries array of catalog/plugins.json and collect the version-bearing manifest each entry identifies (plugins/<id>/plugin.json resolved from the entry's directory field). Require exactly 28 distinct ODIN package entries; reject duplicate, missing, out-of-root, or non-file paths. Do not discover or add unrelated files to make the check pass. Done when: the manifests for all 28 catalog entries are collected.

  4. Parse every collected file according to its declared data format and extract each release version field. Record the file path, field, parsed value, and whether it matches the canonical version. A missing, malformed, non-string, or empty field is a mismatch, not an assumed value. Done when: every collected file is parsed and its version field is recorded with match status.

Read the full file on GitHub · 42 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. yesterday First seen · 42 lines · 59 tokens per session scan A 8084b2745435

Subscribe to this mod's changes

lockstep-version-guard is a skill published in the GitHub repository OutlineDriven/odin-claude-plugin (35 stars, last pushed today), licensed Apache-2.0. It adds 59 tokens to every session and 782 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 2026-09-04.