strike-the-root

strike-the-root is a skill for Claude Code, Codex from OutlineDriven/odin-claude-plugin. It costs 52 tokens per session (2,237 once invoked), scanned A, original, Apache-2.0.

A debugging workflow that finds the underlying cause of a bug or failure and repairs the design that allowed it to happen. It also adds a regression test, which checks that the same problem does not return.

In plain words
What is it for?
Use it for bugs, flaky tests, regressions, slow behavior, review findings, or tickets that need a lasting root-cause fix rather than a quick workaround.
Why use it?
It avoids repeatedly patching visible symptoms when the deeper cause would continue producing related bugs.

Skill for Claude CodeCodex

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

Part of the odin-code plugin — 60 skills shipped together

Good fit Use it for bugs, flaky tests, regressions, slow behavior, review findings, or tickets that need a lasting root-cause fix rather than a quick workaround.

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

Made for: Claude Code, Codex.

Or install odin-code, the plugin that ships this one along with the rest of its 60 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 strike-the-root

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/outlinedriven/odin-claude-plugin/strike-the-root"><img src="https://agentmods.dev/badge/skills/outlinedriven/odin-claude-plugin/strike-the-root.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 52 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,237 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 $0.00052 $0.02237
Opus 5 $0.00026 $0.01118
Sonnet 5 $0.00010 $0.00447
Haiku 4.5 $0.00005 $0.00224

Measured 2d ago against content hash 87ac2aab2d14, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

strike-the-root 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 2d 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/odin-code/skills/strike-the-root/SKILL.md · 68 lines

How it starts

The opening of the file, as written. The whole thing — 68 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Strike the root

Find the core and make it not break next time. Grill the real core and solve it from first principles, not the outskirts. Be sharp and work for the longer horizon.

A bug is evidence about the design that produced it. When the design is wrong, blocking symptoms is unlimited treadmill work: the same fault keeps spawning new bugs no matter how many are fixed. Sharp means acting on evidence in the code, never on speculation. Long horizon means the repair is still right in six months, under the next feature, with the next maintainer.

Contract

Field Bound contract
Trigger A bug, failure, flake, regression, slowness, review finding, or ticket needs root-shape repair, not the nearest patch.
Authority Reversible local: writes only named local artifacts (an evidence ledger, tagged instrumentation, the fix, and a regression test); rollback is undo (revert those local writes). No remote mutation.
Side effect A confirmed root cause, a root-shape fix, a passing regression test, and a clean tree with all instrumentation removed.
Done The fault class named at the core can no longer produce the reported bug family; the full project check set passes with no monkey patch, shim, special-cased input, or suppressed symptom left in the diff; every review comment on the touched surface carries an explicit verdict.

Refusals

  • No symptom patches. A conditional that special-cases the reported input, a wrapper that catches the fault downstream, or a config flag that hides it all leave the design fault in place. Remove the fault instead.
  • No suppression. No @ts-ignore, # type: ignore, // eslint-disable, ignore flags, or deleted tests to silence errors.
  • No special-casing inputs. The repair removes the fault class, not the reported instance.
  • No outskirts work. Renames, formatting, and comment edits around a bug change nothing. Spend the effort where the failure lives.
  • No speculative redesign. The wide view informs the repair; it does not license rewriting subsystems the fault does not touch.
  • No patch without a reproduced root cause. When the input is a ticket, reproduction and root-cause analysis precede any fix. An unstructured fix that skips reproduction is refused.

Read the full file on GitHub · 68 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. 2d ago First seen · 68 lines · 52 tokens per session scan A 87ac2aab2d14

Subscribe to this mod's changes

strike-the-root is a skill published in the GitHub repository OutlineDriven/odin-claude-plugin (35 stars, last pushed yesterday), licensed Apache-2.0. It adds 52 tokens to every session and 2,237 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 2026-09-06.

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