matrixscroll: Instructions file for Codex

AGENTS.md

matrixscroll AGENTS.md is an instructions file for Codex, OpenCode from SSX360/matrixscroll. It costs 816 tokens per session, scanned A, original, Apache-2.0.

A set of writing and development instructions for the SSX360/matrixscroll repository. It defines rules for documentation, commit attribution, version references, and technical claims.

In plain words
What is it for?
Use it when editing user-facing text, documentation, installation examples, or repository changes. It also helps keep version and availability statements aligned with the published project.
Why use it?
Repository guidance can be easy to miss or apply inconsistently. These instructions give an agent a shared reference for writing docs and describing the software accurately.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions CLAUDE.md; mentions AGENTS.md.

This is SSX360/matrixscroll's own configuration. It tells Codex and OpenCode how to work on matrixscroll 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 matrixscroll configures →

Reuse

Borrowing it

Nothing to install: this file belongs to SSX360/matrixscroll. 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/SSX360/matrixscroll/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/SSX360/matrixscroll

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 matrixscroll AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/ssx360/matrixscroll/agents-md/github.svg)](https://agentmods.dev/instructions/ssx360/matrixscroll/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/ssx360/matrixscroll/agents-md"><img src="https://agentmods.dev/badge/instructions/ssx360/matrixscroll/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 matrixscroll AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/ssx360/matrixscroll/agents-md"><img src="https://agentmods.dev/badge/instructions/ssx360/matrixscroll/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 816 This file is loaded in full into every session.
When invoked 816 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 $0.00816 $0.00816
Opus 5.5 $0.00326 $0.00326
Sonnet 5.5 $0.00163 $0.00163
Haiku 4.5 $0.00082 $0.00082

Measured 1mo ago against content hash 2a3d7ab98207, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

matrixscroll 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 1mo 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 · 63 lines

How it starts

The opening of the file, as written. The whole thing — 63 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Prose rules for this repository live in CLAUDE.md. Read it before writing or editing any user-facing text. The condensed version:

  • Active voice, sentence-case headings, present tense, second person.
  • Every paragraph must name something a reader could look up.
  • No em-dashes (—) and no en-dash separators ( – ). Use a hyphen, comma, period, or parentheses.
  • One negative-parallelism construction per page, maximum.
  • Banned: seamless, cutting-edge, robust, game-changer, unleash, elevate, next-gen, revolutionize, delve, tapestry, leverage, harness, empower.
  • Naming DORA, PCI DSS, the EU AI Act, SOC 2, NIST, the SSDF, or the FS-AI RMF obliges the file to carry evidence mapping, not a certification claim. Never assert that anything is certified or compliant.
  • The published version is 0.11.0. Confirm pyproject.toml against https://pypi.org/pypi/matrixscroll/json when changing release claims. Current source can contain post-release fixes without a new package version. Pin versions explicitly in install examples. The current SDK accepts only protocol v2. Historical verification belongs to the labeled legacy artifact.
  • Custody is device-agnostic (IdentityProvider). Do not document USB/SE050 host transports or protocol details as current product surface.
  • Never delete or soften a "Verification boundaries" section.
  • Do not claim CNSA 2.0 certification, FIPS CMVP validation, or NSA approval. Naming ML-DSA-87 as the Category 5 / CNSA 2.0 signature parameter set is parameter readiness only.
  • Hold every crypto, verifier, gate, and claims change to docs/explanation/gold-standard.md (diagram in docs/assets/formal-mathematics-of-accountability.png).
  • Fail closed: verdicts are CONSISTENT / INCONSISTENT / INDETERMINATE (exit 0 / 2 / 1). No silent pass on missing evidence.
  • Rule of Refusal: no AI-generated or AI-altered data in the verified core; digest-pin provenance. No AI acts as decision authority for technical conclusions.
  • Lean 4 / F* extracted verifier is the bar, not an available capability, until the tree contains it.

Read the full file on GitHub · 63 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. 1mo ago Changed · +4 lines · +46 tokens per session 2a3d7ab98207
  2. 1mo ago Changed · +9 lines · +154 tokens per session 316b67531bef
  3. 1mo ago Changed · -5 tokens per session 982674e31606
  4. 2mo ago First seen · 50 lines · 621 tokens per session scan A 5cb5c318d408

Subscribe to this mod's changes

matrixscroll AGENTS.md is an instructions file published in the GitHub repository SSX360/matrixscroll (5 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 816 tokens to every session, about $0.0033 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.

Related

matrixscroll AGENTS.md compared with instructions from other repositories

matrixscroll AGENTS.md next to 6 instructions from other repositories
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matrixscroll AGENTS.mdSSX360/matrixscrollInstructions file51mo agoApache-2.0A816Codex, OpenCode
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vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA3,093GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file274k2d agoMITA4,313Codex, OpenCode