co-teacher

co-teacher is an agent for Claude Code from saniales/ai-lesson-planner. It costs 24 tokens per session (130 once invoked), scanned A, original, GPL-3.0.

An individual teacher used as part of a group that plans lessons from several perspectives. It can also provide one independent teaching viewpoint.

In plain words
What is it for?
Use it to explain a topic, suggest teaching material, or contribute to a collaborative lesson-planning debate.
Why use it?
It lets lesson planning include a focused perspective or a structured contribution to a wider teaching discussion.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md).

Good fit Use it to explain a topic, suggest teaching material, or contribute to a collaborative lesson-planning debate.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/saniales/ai-lesson-planner/co-teacher
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/saniales/ai-lesson-planner

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 co-teacher

README.md
[![agentmods](https://agentmods.dev/badge/agents/saniales/ai-lesson-planner/co-teacher/github.svg)](https://agentmods.dev/agents/saniales/ai-lesson-planner/co-teacher)
Your own site
<a href="https://agentmods.dev/agents/saniales/ai-lesson-planner/co-teacher"><img src="https://agentmods.dev/badge/agents/saniales/ai-lesson-planner/co-teacher/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 co-teacher

Your own site · 80×15
<a href="https://agentmods.dev/agents/saniales/ai-lesson-planner/co-teacher"><img src="https://agentmods.dev/badge/agents/saniales/ai-lesson-planner/co-teacher.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 24 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 130 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 $0.00024 $0.00130
Opus 5 $0.00012 $0.00065
Sonnet 5 $0.00005 $0.00026
Haiku 4.5 $0.00002 $0.00013

Measured 10d ago against content hash f3c17f5d1ba2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

co-teacher 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 10d 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.

.github/agents/co-teacher.md · 19 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

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. 10d ago First seen · 19 lines · 24 tokens per session scan A f3c17f5d1ba2

Subscribe to this mod's changes

co-teacher is an agent published in the GitHub repository saniales/ai-lesson-planner (20 stars, last pushed 6mo ago), licensed GPL-3.0. It adds 24 tokens to every session and 130 once invoked, about $0.0001 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.