What is sidekick AGENTS.md?

Repository instructions for sidekick, covering its source of truth, database-first access, startup, continuity, and execution rules. The available excerpt does not include the detailed contents.

Use them as the starting guidance when working on sidekick, especially before accessing data or changing how the project starts and continues work.

They indicate that contributors should follow the repository's established data and continuity rules instead of relying on assumptions.

How geoffmcc/sidekick configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to geoffmcc/sidekick. 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/geoffmcc/sidekick/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/geoffmcc/sidekick

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/geoffmcc/sidekick/agents-md/github.svg)](https://agentmods.dev/instructions/geoffmcc/sidekick/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/geoffmcc/sidekick/agents-md"><img src="https://agentmods.dev/badge/instructions/geoffmcc/sidekick/agents-md/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/geoffmcc/sidekick/agents-md"><img src="https://agentmods.dev/badge/instructions/geoffmcc/sidekick/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,818 This file is loaded in full into every session.

When invoked 1,818 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 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.

Model	Per session	Once invoked
Fable 5.1	$0.01818	$0.01818
Opus 5.5	$0.00727	$0.00727
Sonnet 5.5	$0.00364	$0.00364
Haiku 4.5	$0.00182	$0.00182

Measured 15d ago against content hash 030223f955b0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

sidekick 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 15d 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 · 182 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.

15d ago Changed · +6 lines · +80 tokens per session 030223f955b0
2mo ago Changed · +37 lines · +468 tokens per session 28798cdf9ff6
2mo ago First seen · 139 lines · 1,270 tokens per session scan A f22f4b186bcf

Subscribe to this mod's changes

sidekick AGENTS.md is an instructions file published in the GitHub repository geoffmcc/sidekick (3 stars, last pushed 13d ago), licensed GPL-3.0. It adds 1,818 tokens to every session, about $0.0073 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.

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sidekick AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
sidekick AGENTS.mdgeoffmcc/sidekick	Instructions file	3	13d ago	GPL-3.0	A	1,818	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

sidekick: Instructions file for Codex