What is TrikeShed AGENTS.md?

Repository instructions for TrikeShed, describing its architecture and rules for network access, blocking operations, and shutdown.

Implementing or reviewing TrikeShed changes involving reactor-based components, userspace.nio networking, blocking calls, cancellation, and shutdown.

They help coding agents avoid violating the project’s event-driven design or leaving work running during shutdown.

How jnorthrup/TrikeShed configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to jnorthrup/TrikeShed. 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/jnorthrup/TrikeShed/master/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/jnorthrup/TrikeShed

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/jnorthrup/trikeshed/agents-md/github.svg)](https://agentmods.dev/instructions/jnorthrup/trikeshed/agents-md)

Your own site

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

Per session 267 This file is loaded in full into every session.

When invoked 267 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	$0.00267	$0.00267
Opus 5.5	$0.00107	$0.00107
Sonnet 5.5	$0.00053	$0.00053
Haiku 4.5	$0.00027	$0.00027

Measured today against content hash df55be543ad6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

TrikeShed 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 today.

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 · 18 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-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.

today Changed · +2 lines · +79 tokens per session df55be543ad6
1mo ago Changed · -19 lines · -250 tokens per session bc0f204894ce
1mo ago Changed · +20 lines · +316 tokens per session 41051a62fe7c
2mo ago Changed · -159 lines · -1,675 tokens per session 8d188bdf9a2c
2mo ago Changed · +31 lines · +414 tokens per session 8edde4f02d3f
2mo ago First seen · 143 lines · 1,383 tokens per session scan A eeb5e918e7f7

Subscribe to this mod's changes

TrikeShed AGENTS.md is an instructions file published in the GitHub repository jnorthrup/TrikeShed (7 stars, last pushed yesterday), licensed AGPL-3.0. It adds 267 tokens to every session, about $0.0011 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.

TrikeShed AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
TrikeShed AGENTS.mdjnorthrup/TrikeShed	Instructions file	7	yesterday	AGPL-3.0	A	267	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	5,649	GitHub Copilot
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	today	MIT	A	4,680	Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	3,093	GitHub Copilot
vscode ai-customization.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	1,907	GitHub Copilot

TrikeShed: Instructions file for Codex