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Geogebra_mcp: Instructions file for Codex

AGENTS.md

Geogebra_mcp AGENTS.md is an instructions file for Codex, OpenCode from 123pc/Geogebra_mcp. It costs 580 tokens per session, scanned A, original, MIT.

Project instructions for setting up and using GeoGebra MCP with AI coding agents. GeoGebra is software for interactive mathematics, including geometry drawings.

In plain words
What is it for?
They guide configuration for Claude Code or Codex, installation troubleshooting, status checks, triangle drawing, and later GeoGebra diagnostics.
Why use it?
They provide a defined setup and verification process so the agent configures the right tools and confirms that GeoGebra works.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions Claude Code; mentions Codex.

This is 123pc/Geogebra_mcp's own configuration. It tells Codex and OpenCode how to work on Geogebra_mcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything Geogebra_mcp configures →

not rated 5repo 5mo ago A scan 580 tokens original MIT
View source ↗ 123pc/Geogebra_mcp
Reuse

Borrowing it

Nothing to install: this file belongs to 123pc/Geogebra_mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/123pc/Geogebra_mcp/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/123pc/Geogebra_mcp

Made for: Codex, OpenCode.

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Per session 580 This file is loaded in full into every session.
When invoked 580 The same file — it is already loaded in full.
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.
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 $0.00580 $0.00580
Opus 5.5 $0.00232 $0.00232
Sonnet 5.5 $0.00116 $0.00116
Haiku 4.5 $0.00058 $0.00058

Measured 1mo ago against content hash 670fc596ab91, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Geogebra_mcp AGENTS.md 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 1mo 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.

AGENTS.md · 46 lines

How it starts

The opening of the file, as written. The whole thing — 46 lines — stays where its author put it; the contents beside it link to each section on GitHub.

GeoGebra MCP Agent Guide

This repository supports natural-language setup by AI coding agents.

When the user asks for any of the following:

  • "Set up GeoGebra MCP"
  • "Install GeoGebra MCP"
  • "Configure this project for Claude Code/Codex"
  • "按照项目说明自动安装 GeoGebra MCP"

follow this workflow:

  1. Read skills/geogebra-setup/SKILL.md.

  2. Ask the user which AI agent(s) to configure (Claude Code, Codex, or both) before running the setup script. Wait for their response.

  3. Run the setup script from the repository root with the appropriate --agent flag:

    python scripts/setup_geogebra_mcp.py --agent <choice>

    Where <choice> is claude, codex, or all based on the user's answer.

  4. If dependency installation is blocked by permissions or network restrictions, ask the user to approve the command and rerun it.

  5. After setup, ask the user to restart their agent session.

  6. In the new session, verify with:

    Use GeoGebra MCP to check status and draw a triangle.

For drawing and troubleshooting after installation, use:

  • skills/use-geogebra-mcp/SKILL.md for MCP usage and diagnostics.
  • skills/geogebra-master/SKILL.md for expert GeoGebra construction strategy.

Skill Development Guidelines

When modifying skill files, follow these checks before committing to prevent test-set pollution:

  1. Eliminate construction-type-specific residue. Search skill files for content that overfits to one type of drawing task — e.g., hardcoded mechanism parameters (such as crank-rocker's O1=(0,0), O2=(6,0), link lengths 5 and 4), specific slider speeds, or workflows that only apply to one construction type. Example patterns in skills (such as mechanism templates) should serve as references, not the only path. Ensure the skill works equally well for function graphs, plane geometry, 3D graphics, data charts, and mechanism animations.

  2. Verify with a different construction type. After modifying a skill, test it with at least one drawing task of a different type than the one used for debugging. For example, if you tuned the skill using four-bar linkage tasks, also test a function graph or 3D graphics task to confirm the modification did not break other construction workflows.

Read the full file on GitHub · 46 lines

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. 1mo ago First seen · 46 lines · 580 tokens per session scan A 670fc596ab91

Subscribe to this mod's changes

Geogebra_mcp AGENTS.md is an instructions file published in the GitHub repository 123pc/Geogebra_mcp (5 stars, last pushed 5mo ago), licensed MIT. It adds 580 tokens to every session, about $0.0023 per session on Opus 5.5. 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.

Learning and teachingclaude-code-mcpcodex-mcpgeogebramcp
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