build-with-coco: Instructions file for Codex

AGENTS.md

build-with-coco AGENTS.md is an instructions file for Codex, OpenCode from vinodhini-sd/build-with-coco. It costs 1,959 tokens per session, scanned A, original, no licence file.

A set of AGENTS.md instructions for the vinodhini-sd/build-with-coco repository, covering its purpose, agent rules, skills, and directory structure. AGENTS.md files tell coding agents how to work in a project.

In plain words
What is it for?
Use it when an agent is working in the vinodhini-sd/build-with-coco codebase.
Why use it?
It gives agents the repository context and rules they need before changing the code.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md.

This is vinodhini-sd/build-with-coco's own configuration. It tells Codex and OpenCode how to work on build-with-coco 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 build-with-coco configures →

Reuse

Borrowing it

Nothing to install: this file belongs to vinodhini-sd/build-with-coco. 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/vinodhini-sd/build-with-coco/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/vinodhini-sd/build-with-coco

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 build-with-coco AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/vinodhini-sd/build-with-coco/agents-md/github.svg)](https://agentmods.dev/instructions/vinodhini-sd/build-with-coco/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/vinodhini-sd/build-with-coco/agents-md"><img src="https://agentmods.dev/badge/instructions/vinodhini-sd/build-with-coco/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.

agentmods 80×15 button for build-with-coco AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/vinodhini-sd/build-with-coco/agents-md"><img src="https://agentmods.dev/badge/instructions/vinodhini-sd/build-with-coco/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,959 This file is loaded in full into every session.
When invoked 1,959 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.01959 $0.01959
Opus 5.5 $0.00784 $0.00784
Sonnet 5.5 $0.00392 $0.00392
Haiku 4.5 $0.00196 $0.00196

Measured 2mo ago against content hash 4d3367e98c13, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

build-with-coco 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 2mo 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 · 220 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. 2mo ago First seen · 220 lines · 1,959 tokens per session scan A 4d3367e98c13

Subscribe to this mod's changes

build-with-coco AGENTS.md is an instructions file published in the GitHub repository vinodhini-sd/build-with-coco (23 stars, last pushed 3mo ago), with no licence file. It adds 1,959 tokens to every session, about $0.0078 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 2026-08-30.

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