What is pylon-mcp AGENTS.md?

Contribution instructions for a TypeScript project, including its branch, commit, testing, build, linting, and pull-request rules. A pull request is a proposed change submitted for review before it is merged.

Use it when changing the project, especially to create a feature branch, run type checks and tests, validate MCP configuration, format code, commit changes, and prepare a pull request.

It gives coding agents the repository's required workflow and checks, reducing the chance of unreviewed changes or broken code being submitted.

How JustinBeckwith/pylon-mcp configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to JustinBeckwith/pylon-mcp. 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/JustinBeckwith/pylon-mcp/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/JustinBeckwith/pylon-mcp

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/justinbeckwith/pylon-mcp/agents-md/github.svg)](https://agentmods.dev/instructions/justinbeckwith/pylon-mcp/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/justinbeckwith/pylon-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/justinbeckwith/pylon-mcp/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/justinbeckwith/pylon-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/justinbeckwith/pylon-mcp/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 299 This file is loaded in full into every session.

When invoked 299 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.

Model	Per session	Once invoked
Fable 5.1	$0.00299	$0.00299
Opus 5.5	$0.00120	$0.00120
Sonnet 5.5	$0.00060	$0.00060
Haiku 4.5	$0.00030	$0.00030

Measured 2mo ago against content hash ea9d24e4ffba, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

pylon-mcp 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 · 47 lines

What it actually says

Agent Guidelines

Making Changes

When making changes to this repository:

Create a new branch from main:

git checkout -b feature/description-of-change

Make your changes and commit them:

git add -A
git commit -m "type: description of change"

Push the branch and create a pull request:

git push -u origin feature/description-of-change
gh pr create --title "type: description" --body "Description of changes"

Do not push directly to main - all changes should go through pull requests.

Commit Message Format

Use conventional commits:

feat: - New features
fix: - Bug fixes
refactor: - Code refactoring
docs: - Documentation changes
chore: - Maintenance tasks
test: - Test additions/changes

Development Commands

pnpm install          # Install dependencies
pnpm run build        # Build the project
pnpm run typecheck    # Type check all TypeScript
pnpm run lint         # Run linter
pnpm run fix          # Auto-fix lint/format issues
pnpm run test         # Run tests
pnpm run validate:mcp # Validate MCP configuration

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.

2mo ago First seen · 47 lines · 299 tokens per session scan A ea9d24e4ffba

Subscribe to this mod's changes

pylon-mcp AGENTS.md is an instructions file published in the GitHub repository JustinBeckwith/pylon-mcp (8 stars, last pushed 3d ago), licensed MIT. It adds 299 tokens to every session, about $0.0012 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.

pylon-mcp AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
pylon-mcp AGENTS.mdJustinBeckwith/pylon-mcp	Instructions file	8	3d ago	MIT	A	299	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	5,649	GitHub Copilot
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	today	MIT	A	4,680	Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	3,093	GitHub Copilot
vscode ai-customization.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	1,907	GitHub Copilot

pylon-mcp: Instructions file for Codex