sparring-partner

sparring-partner is a skill for Claude Code from magnusrodseth/dotfiles. It costs 79 tokens per session (563 once invoked), scanned A, original, no licence file.

A discussion partner for testing ideas, plans, strategies, and decisions. It deliberately looks for weaknesses, missing considerations, and other possible approaches.

In plain words
What is it for?
Use it to challenge a proposal, act as a devil's advocate, stress-test a plan, identify risks, or compare alternatives.
Why use it?
It helps reveal problems or assumptions that are easy to miss when evaluating an idea on your own.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

Good fit Use it to challenge a proposal, act as a devil's advocate, stress-test a plan, identify risks, or compare alternatives.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/magnusrodseth/dotfiles/sparring-partner
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 magnusrodseth/dotfiles --skill sparring-partner
Clone the repo
git clone --depth 1 https://github.com/magnusrodseth/dotfiles

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 sparring-partner

README.md
[![agentmods](https://agentmods.dev/badge/skills/magnusrodseth/dotfiles/sparring-partner/github.svg)](https://agentmods.dev/skills/magnusrodseth/dotfiles/sparring-partner)
Your own site
<a href="https://agentmods.dev/skills/magnusrodseth/dotfiles/sparring-partner"><img src="https://agentmods.dev/badge/skills/magnusrodseth/dotfiles/sparring-partner/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 sparring-partner

Your own site · 80×15
<a href="https://agentmods.dev/skills/magnusrodseth/dotfiles/sparring-partner"><img src="https://agentmods.dev/badge/skills/magnusrodseth/dotfiles/sparring-partner.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 79 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 563 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.
Origin unknown 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 $0.00079 $0.00563
Opus 5 $0.00039 $0.00282
Sonnet 5 $0.00016 $0.00113
Haiku 4.5 $0.00008 $0.00056

Measured 9d ago against content hash 9b3234bc9ab3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

sparring-partner 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.

.claude/skills/sparring-partner/SKILL.md · 57 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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 · 57 lines · 79 tokens per session scan A 9b3234bc9ab3

Subscribe to this mod's changes

sparring-partner is a skill published in the GitHub repository magnusrodseth/dotfiles (2 stars, last pushed today), with no licence file. It adds 79 tokens to every session and 563 once invoked, about $0.0004 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 2026-08-31.

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