tandem

tandem is a plugin for Claude Code from jonny981/claude-tandem. Its manifest loads nothing; the 8 skills, 8 hooks it bundles cost 286 tokens per session together, scanned A, original, MIT.

A Claude Code plugin for compound learning, where lessons from one session are intended to improve later sessions. The description does not provide more detail about how it works.

In plain words
What is it for?
Use it when you want Claude Code sessions to build on previous sessions.
Why use it?
It is intended to reduce repeated mistakes or repeated setup across Claude Code sessions, though the specific mechanism is not described.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest. Also seen: mentions Claude Code.

Good fit Use it when you want Claude Code sessions to build on previous sessions.

Compare 6 plugins from other repositories ↓
Install in Claude Code
/plugin marketplace add jonny981/claude-tandem
/plugin install tandem
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/jonny981/claude-tandem

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 tandem

README.md
[![agentmods](https://agentmods.dev/badge/plugins/jonny981/claude-tandem/tandem/github.svg)](https://agentmods.dev/plugins/jonny981/claude-tandem/tandem)
Your own site
<a href="https://agentmods.dev/plugins/jonny981/claude-tandem/tandem"><img src="https://agentmods.dev/badge/plugins/jonny981/claude-tandem/tandem/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 tandem

Your own site · 80×15
<a href="https://agentmods.dev/plugins/jonny981/claude-tandem/tandem"><img src="https://agentmods.dev/badge/plugins/jonny981/claude-tandem/tandem.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 8 skills, 8 hooks cost 286 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

tandem 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 2mo 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/tandem/.claude-plugin/plugin.json · 7 lines

What it actually says

{
  "name": "tandem",
  "version": "1.4.0",
  "description": "Compound learning for Claude Code — every session makes the next one better",
  "author": {"name": "jonny981"}
}
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. 2mo ago First seen · 7 lines scan A 602bd032a653

Subscribe to this mod's changes

tandem is a plugin published in the GitHub repository jonny981/claude-tandem (5 stars, last pushed 6mo 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.

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