matrixscroll AGENTS.md

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

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add instructions/ssx360/matrixscroll/agents-md
Clone the repo
git clone --depth 1 https://github.com/SSX360/matrixscroll

Made for: Codex, OpenCode.

Per session 621 This file is loaded in full into every session.
When invoked 621 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.00621 $0.00621
Opus 5 $0.00311 $0.00311
Sonnet 5 $0.00124 $0.00124
Haiku 4.5 $0.00062 $0.00062

Measured 2d ago against content hash 5cb5c318d408, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 2d 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 · 50 lines

How it starts

The opening of the file, as written. The whole thing — 50 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 0.7.0, per pyproject.toml and https://pypi.org/pypi/matrixscroll/json. Pin it explicitly in every install example. Unreleased tree changes may retarget the software PQC default to ml-dsa-87; do not claim that default on PyPI until the release that ships it.
  • SSX360 produces the SE050 USB signer and supplies it through direct inquiry. Distinguish direct-contact availability from self-service or retail distribution.
  • 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.

Commit attribution

Commit envelopes detect actor_type and tool from the environment, so a commit you make is recorded as agent with your tool name. Do not set MATRIXSCROLL_ACTOR_TYPE=human to make a range look human-authored, and do not edit or re-sign an envelope that is already published. See docs/explanation/actor-attribution.md.

Run vale --minAlertLevel=error before you start and again before you finish. The linter gets the last word, never the model. The full guide is the ssx360-prose Skill and docs/explanation/style-supplement.md.

Read the full file on GitHub · 50 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. 2d 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 9d ago), licensed Apache-2.0. It adds 621 tokens to every session, about $0.0031 per session on Opus 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.