CiteCheck: Instructions file for Codex

AGENTS.md

CiteCheck AGENTS.md is an instructions file for Codex, OpenCode from color4-alt/CiteCheck. It costs 499 tokens per session, scanned A, original, MIT.

Development and testing rules for CiteCheck, a tool that checks citations and references in LaTeX files and PDFs. They define required checks and expected results for the project's sample paper.

In plain words
What is it for?
Use them when changing CiteCheck's source or PDF parsing, citation detection, reference-format checks, or semantic verification, then run the prescribed demo tests.
Why use it?
They make sure changes are tested against a known set of citation and formatting problems before being committed. The expected counts help reveal regressions in parsing or checking.

Instructions file for CodexOpenCode

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

This is color4-alt/CiteCheck's own configuration. It tells Codex and OpenCode how to work on CiteCheck 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 CiteCheck configures →

Needs its repository: it reads a path above its own folder, which exists only inside the repository. The line is citecheck ../latex_paper/main.tex --skip-verification --skip-semantic -o /tmp/test_latex.md.

Reuse

Borrowing it

Nothing to install: this file belongs to color4-alt/CiteCheck. 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/color4-alt/CiteCheck/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/color4-alt/CiteCheck

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 CiteCheck AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/color4-alt/citecheck/agents-md/github.svg)](https://agentmods.dev/instructions/color4-alt/citecheck/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/color4-alt/citecheck/agents-md"><img src="https://agentmods.dev/badge/instructions/color4-alt/citecheck/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 CiteCheck AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/color4-alt/citecheck/agents-md"><img src="https://agentmods.dev/badge/instructions/color4-alt/citecheck/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 499 This file is loaded in full into every session.
When invoked 499 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 $0.00499 $0.00499
Opus 5.5 $0.00200 $0.00200
Sonnet 5.5 $0.00100 $0.00100
Haiku 4.5 $0.00050 $0.00050

Measured 2mo ago against content hash d2fed4be7b99, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

CiteCheck 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 · 52 lines

What it actually says

@./skills/citecheck/SKILL.md @./references/api-reference.md @./references/format-check-rules.md @./references/thematic-scoring-prompt.md @./references/semantic-matching-prompt.md

CiteCheck — Development & Testing Rules

Pre-Push Testing Requirement

Every feature change MUST be validated against the demo test fixtures before committing.

The latex_paper/ directory (sibling to CiteCheck/) contains intentionally flawed references used as the canonical integration test:

# From inside CiteCheck/
cd CiteCheck

# 1. Test LaTeX source parsing
citecheck ../latex_paper/main.tex --skip-verification --skip-semantic -o /tmp/test_latex.md

# Expected baseline:
#   - 19 references parsed
#   - 18 citation markers detected
#   - 7 format issues (preprints, wrong entry type, missing author, future year)
#   - Uncited list: only [3] touvron2023llama

# 2. Test PDF fallback parsing
citecheck ../latex_paper/main.pdf --skip-verification --skip-semantic -o /tmp/test_pdf.md

# Expected baseline:
#   - 18 references parsed (PDF loses incomplete entry metadata)
#   - 18 citation markers detected
#   - 0 format issues (PDF parser has limited format checking)

Regression Checklist

  • LaTeX test produces expected reference count (±0)
  • LaTeX test produces expected citation marker count (±0)
  • Uncited references list shows ONLY truly uncited entries (e.g., touvron2023llama)
  • PDF test runs without crashing
  • pytest tests/test_parser.py passes (8/8)
  • python -m citecheck --help works

Known Improvements (Post-0.1.0)

  • arXiv year parsing (pdf_parser.py): arXiv IDs like arXiv:2004.05150 are no longer mistaken for publication years.
  • Crossref false-match filtering (verifier.py): Low-similarity matches are now rejected; large year mismatches (>2 years) are flagged separately from small mismatches.

If any baseline metric shifts unexpectedly, investigate before pushing.

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 · 52 lines · 499 tokens per session scan A d2fed4be7b99

Subscribe to this mod's changes

CiteCheck AGENTS.md is an instructions file published in the GitHub repository color4-alt/CiteCheck (70 stars, last pushed 5mo ago), licensed MIT. It adds 499 tokens to every session, about $0.0020 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.

Related

CiteCheck AGENTS.md compared with instructions from other repositories

CiteCheck AGENTS.md next to 6 instructions from other repositories
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CiteCheck AGENTS.mdcolor4-alt/CiteCheckInstructions file705mo agoMITA499Codex, OpenCode
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deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file274k2d agoMITA4,313Codex, OpenCode