What is youtube-personal-feed AGENTS.md?

A project instruction file for a server and command-line tool that reads a user's YouTube subscriptions and video details. It documents the project layout, commands, and code-quality rules.

Use it when developing, testing, or maintaining the YouTube personal-feed project. The documented jobs include listing subscriptions, building video feeds, finding channel uploads, and retrieving video details.

It tells coding agents how this Node.js and TypeScript project is organized and how to work on it consistently. It also explains that access uses the YouTube API and Google sign-in.

How toniher/youtube-personal-feed configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to toniher/youtube-personal-feed. 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/toniher/youtube-personal-feed/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/toniher/youtube-personal-feed

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/toniher/youtube-personal-feed/agents-md/github.svg)](https://agentmods.dev/instructions/toniher/youtube-personal-feed/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/toniher/youtube-personal-feed/agents-md"><img src="https://agentmods.dev/badge/instructions/toniher/youtube-personal-feed/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/toniher/youtube-personal-feed/agents-md"><img src="https://agentmods.dev/badge/instructions/toniher/youtube-personal-feed/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,914 This file is loaded in full into every session.

When invoked 1,914 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	$0.01914	$0.01914
Opus 5.5	$0.00766	$0.00766
Sonnet 5.5	$0.00383	$0.00383
Haiku 4.5	$0.00191	$0.00191

Measured 5d ago against content hash a99d3966f82b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

youtube-personal-feed 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 5d 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 · 127 lines

How it starts

The opening of the file, as written. The whole thing — 127 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Guidelines for YouTube Personal Feed MCP Server

This repository provides an MCP (Model Context Protocol) server and a CLI for a user's personal YouTube subscription feed and video details using the YouTube Data API v3 and Google OAuth 2.0.

Project Overview

Name: youtube-personal-feed
Runtime: Node.js (>= 18), TypeScript (ES2022 / NodeNext ESM)
Protocol: MCP over stdio transport (@modelcontextprotocol/sdk)
API Integration: YouTube Data API v3 via googleapis and google-auth-library
Interfaces: MCP over stdio and JSON-output CLI
Key Purpose: List subscriptions, build subscription video feeds, query channel uploads, and retrieve video details.

Directory & Layout

youtube-personal-feed/
├── package.json           # Scripts, dependencies, binary definition
├── LICENSE                # MIT license
├── tsconfig.json          # Root TypeScript config (ES2022, NodeNext)
├── tsconfig.build.json    # Build-specific config (compiles src/ -> dist/)
├── .env.example           # Template for CLIENT_ID and CLIENT_SECRET
├── .github/workflows/
│   └── publish.yml         # Release-triggered npm publishing workflow
├── scripts/
│   └── smoke.ts           # Standalone smoke test script
└── src/
    ├── config.ts          # Environment loading (.env) and path helper functions
    ├── types.ts           # Shared TypeScript interfaces (SubscriptionItem, FeedVideo, VideoDetail)
    ├── auth.ts            # One-time OAuth 2.0 loopback server flow
    ├── cli.ts             # JSON-output CLI entrypoint
    ├── youtube.ts         # YouTube API wrapper client with in-memory caching & error mapping
    └── index.ts           # MCP server entrypoint exposing tools over stdio

Command Reference

Command	Purpose
`npm run typecheck`	Validates TypeScript types across `src/` and `scripts/` using `tsc --noEmit`.
`npm run build`	Compiles TypeScript files from `src/` to `dist/` via `tsconfig.build.json`.
`npm run dev`	Runs the MCP server in development mode using `tsx src/index.ts`.
`npm run start`	Runs the production build (`node dist/index.js`).
`npm run auth`	Launches the local loopback server to handle Google OAuth authentication.
`npm run cli -- <args>`	Runs the CLI from source; for example, `npm run cli -- feed --limit 10`.
`npm run smoke`	Executes the smoke test script (`scripts/smoke.ts`) to test API operations.
`npm run lint`	Lints TypeScript sources and verifies their Biome formatting.
`npm run format`	Applies Biome formatting to TypeScript sources.
`npm run precommit`	Runs the staged-file checks and full TypeScript typecheck used by the pre-commit hook.
`npm pack --dry-run`	Verifies the files included in the published npm package.

Read the full file on GitHub · 127 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.

5d ago Changed · +1 lines · +52 tokens per session a99d3966f82b
2mo ago First seen · 126 lines · 1,862 tokens per session scan A d87e86d1e945

Subscribe to this mod's changes

youtube-personal-feed AGENTS.md is an instructions file published in the GitHub repository toniher/youtube-personal-feed (1 stars, last pushed 6d ago), licensed MIT. It adds 1,914 tokens to every session, about $0.0077 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.

youtube-personal-feed AGENTS.md next to 6 instructions from other repositories
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youtube-personal-feed: Instructions file for Codex