agentmods.dev

ark-space: Instructions file for Codex

AGENTS.md

Ark-Space AGENTS.md is an instructions file for Codex, OpenCode from arch3rPro/ark-space. It costs 1,315 tokens per session, scanned A, original, MIT.

Project instructions for ArkSpace, a workspace for organizing reusable agent skills, roles, and workflows. They define where different source files belong and how changes should be validated and regenerated.

In plain words
What is it for?
Use them when creating or updating skills, agent roles, workflows, registries, integrations, or project configuration in ArkSpace.
Why use it?
They prevent project sources, generated files, platform metadata, and private settings from becoming mixed together. They also provide a consistent workflow for making and checking changes.

Instructions file for CodexOpenCode

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

This is arch3rPro/ark-space's own configuration. It tells Codex and OpenCode how to work on ark-space 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 ark-space configures →

not rated 2repo changed today A scan 1,315 tokens original MIT
View source ↗ arch3rPro/ark-space
Reuse

Borrowing it

Nothing to install: this file belongs to arch3rPro/ark-space. 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/arch3rPro/ark-space/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/arch3rPro/ark-space

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 Ark-Space AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/arch3rpro/ark-space/agents-md/github.svg)](https://agentmods.dev/instructions/arch3rpro/ark-space/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/arch3rpro/ark-space/agents-md"><img src="https://agentmods.dev/badge/instructions/arch3rpro/ark-space/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 Ark-Space AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/arch3rpro/ark-space/agents-md"><img src="https://agentmods.dev/badge/instructions/arch3rpro/ark-space/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,315 This file is loaded in full into every session.
When invoked 1,315 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 $0.01315 $0.01315
Opus 5.5 $0.00526 $0.00526
Sonnet 5.5 $0.00263 $0.00263
Haiku 4.5 $0.00131 $0.00131

Measured today against content hash eb518ac908a9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Ark-Space 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 · 86 lines

How it starts

The opening of the file, as written. The whole thing — 86 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Guidance

ArkSpace is a creative workspace for reusable Agent Skills and their supporting tools. This repository is a greenfield redesign; keep the existing ArkSpace repository unchanged unless a task explicitly targets it.

Start Here

  • Read README.md for product scope.
  • Read docs/architecture.md before changing boundaries, protocols, provider execution, credentials, or state.
  • Read docs/migration.md before porting behavior or fixtures from the existing project.
  • Read INSTALL.md before installing, upgrading, configuring credentials, or registering MCP for a user.
  • Read the relevant ADR before implementing or changing a decision it owns.

Project Contract

  • Keep canonical Skills in skills/<skill-name>/SKILL.md.
  • Keep shared Node/TypeScript implementation under src/.
  • Keep deterministic, self-contained Skill scripts inside the owning Skill.
  • Let Skills depend on the arks machine protocol only when shared execution is necessary.
  • Do not require guidance-only, skill-local, or external-tool Skills to use arks.
  • Support native plugin installation through manifests that reference canonical Skills directly.
  • Keep plugin version metadata aligned only during an explicit release; do not create generated plugin mirrors.
  • Add host adapters, roles, workflows, registries, or broader plugin systems only for a concrete consumer.
  • Keep private credentials, endpoints, state, and personal configuration outside version control.

Design Workflow

  1. Name the user task and its completion semantics.
  2. Decide whether the behavior belongs in guidance, a Skill-local script, an external tool, or a shared capability.
  3. For shared capabilities, define the request, result, error, cancellation, and side-effect contract before implementation.
  4. Implement the smallest real vertical slice through the installed arks entry path.
  5. Verify behavior through contract, real-entry, isolated-Skill, and applicable cross-platform tests.
  6. Select tests by the change's impact: run the smallest relevant test file or command first; expand only when shared boundaries, generated artifacts, installation, or release behavior are affected.

Read the full file on GitHub · 86 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. today Changed · -7 lines · -71 tokens per session eb518ac908a9
  2. 7d ago Changed · +14 lines · +471 tokens per session 6fe96b5aed28
  3. 1mo ago Changed · +10 lines · +76 tokens per session e6674b609a00
  4. 1mo ago Changed · +1 lines · +22 tokens per session 4723305bd1fd
  5. 1mo ago Changed · -7 lines · +156 tokens per session 3b653f8548bc
  6. 2mo ago First seen · 75 lines · 661 tokens per session scan A a486e43524e0

Subscribe to this mod's changes

Ark-Space AGENTS.md is an instructions file published in the GitHub repository arch3rPro/ark-space (2 stars, last pushed 2mo ago), licensed MIT. It adds 1,315 tokens to every session, about $0.0053 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.

Building agentsPlanning
Related

Ark-Space AGENTS.md compared with instructions from other repositories

Ark-Space AGENTS.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
Ark-Space AGENTS.mdarch3rPro/ark-spaceInstructions file22mo agoMITA1,315Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA9,719GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143ktodayMITA7,461Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA5,516GitHub Copilot
langchain AGENTS.mdlangchain-ai/langchainInstructions file149ktodayMITA4,680Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA3,093GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file275k3d agoMITA4,313Codex, OpenCode