stk-mcp AGENTS.md

stk-mcp AGENTS.md is an instructions file for Codex, OpenCode from alti3/stk-mcp. It costs 288 tokens per session, scanned A, original, no licence file.

Project-specific instructions for stk-mcp, an MCP server that lets language models work with STK, a tool for designing and planning space missions.

In plain words
What is it for?
Developing and testing stk-mcp and working with mission design, orbital mechanics, and Ansys/AGI STK.
Why use it?
They provide the repository and domain context needed when changing software related to spacecraft and orbital mechanics.

Instructions file for CodexOpenCode

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.

agentmods
npx agentmods add instructions/alti3/stk-mcp/agents-md
Clone the repo
git clone --depth 1 https://github.com/alti3/stk-mcp

Made for: Codex, OpenCode.

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 stk-mcp AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/alti3/stk-mcp/agents-md.svg)](https://agentmods.dev/instructions/alti3/stk-mcp/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/alti3/stk-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/alti3/stk-mcp/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 288 This file is loaded in full into every session.
When invoked 288 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.00288 $0.00288
Opus 5 $0.00144 $0.00144
Sonnet 5 $0.00058 $0.00058
Haiku 4.5 $0.00029 $0.00029

Measured 5d ago against content hash cb4d6ffbb0de, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

stk-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 5d 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 · 16 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. 5d ago First seen · 16 lines · 288 tokens per session scan A cb4d6ffbb0de

Subscribe to this mod's changes

stk-mcp AGENTS.md is an instructions file published in the GitHub repository alti3/stk-mcp (42 stars, last pushed 7mo ago), with no licence file. It adds 288 tokens to every session, about $0.0014 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.