paper-signal: Instructions file for Codex

AGENTS.md

paper-signal AGENTS.md is an instructions file for Codex, OpenCode from jiahuiqu17/paper-signal. It costs 508 tokens per session, scanned A, original, MIT.

Repository instructions for contributing to Paper Signal, a project that uses skills and generated images as part of its tested behavior.

In plain words
What is it for?
Use them when editing routes, prompts, skills, generated examples, packaging, installation, metadata, or contributor documentation in Paper Signal.
Why use it?
They reduce guesswork about which files to read, which checks to run, and how to keep documentation, visual changes, and releases consistent.

Instructions file for CodexOpenCode

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

This is jiahuiqu17/paper-signal's own configuration. It tells Codex and OpenCode how to work on paper-signal 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 paper-signal configures →

Reuse

Borrowing it

Nothing to install: this file belongs to jiahuiqu17/paper-signal. 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/jiahuiqu17/paper-signal/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/jiahuiqu17/paper-signal

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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README.md
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Your own site
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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.

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Per session 508 This file is loaded in full into every session.
When invoked 508 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 $0.00508 $0.00508
Opus 5 $0.00254 $0.00254
Sonnet 5 $0.00102 $0.00102
Haiku 4.5 $0.00051 $0.00051

Measured 10d ago against content hash eff244c88ad0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

paper-signal 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 10d 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 · 34 lines

How it starts

The opening of the file, as written. The whole thing — 34 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Paper Signal contributor instructions

Treat skills as behaviour-shaping code and generated images as test artifacts. Start from a repeatable user problem, preserve the project's narrow visual thesis, and keep every claim about quality inspectable.

Before editing

  1. For documentation-only corrections, compatibility reports, or shared community examples, follow .github/CONTRIBUTING.md and run make check when editing the repository; architecture reading is not required.
  2. Read docs/architecture.md before changing routes, shared visual rules, or skill boundaries.
  3. Read docs/evaluation.md before changing prompts, preservation rules, or generated examples.
  4. Run make check before and after the change. Run make integration when schemas, packaging, installation, or metadata changes.
  5. Keep one conceptual change per branch or pull request.

Repository boundaries

  • Keep each SKILL.md concise, imperative, under 500 lines, and limited to name and description frontmatter.
  • Put reusable depth in one-level references/, deterministic operations in scripts/, and output templates in assets/.
  • Keep paper-signal as the router; do not duplicate shared rules across specialist skills.
  • Add a decision rule, contract, test, or transferable example. Do not expand the system with style adjectives alone.
  • Preserve the zero-dependency runtime. Development-only validation dependencies belong in requirements-dev.txt.

Visual and evidence changes

  • Keep the exact prompt, manifest, selected bitmap, qa.md, and ASSETS.md for every committed visual example.
  • Inspect changed outputs at original size and phone-thumbnail size. Subject or text integrity failures block acceptance.
  • Use fictional, licensed, or clearly redistributable inputs. Never commit private paths, credentials, student records, or unlicensed reference assets.
  • Do not claim a prompt was rendered or visually checked without the real bitmap and an observation-based QA record.

Read the full file on GitHub · 34 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. 10d ago First seen · 34 lines · 508 tokens per session scan A eff244c88ad0

Subscribe to this mod's changes

paper-signal AGENTS.md is an instructions file published in the GitHub repository jiahuiqu17/paper-signal (109 stars, last pushed 29d ago), licensed MIT. It adds 508 tokens to every session, about $0.0025 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 2026-08-30.

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