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mvf1: Instructions file for Codex

AGENTS.md

mvf1 AGENTS.md is an instructions file for Codex, OpenCode from RobSpectre/mvf1. It costs 601 tokens per session, scanned A, original, MIT.

Project instructions for mvf1, a Python library, command-line tool, and MCP server that controls MultiViewer video players through their GraphQL API.

In plain words
What is it for?
Use them when changing the player client, command-line commands, MCP controls, GraphQL schema integration, documentation, or tests.
Why use it?
They show how to install, test, lint, type-check, and organise the project without needing to discover those conventions first.

Instructions file for CodexOpenCode

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

This is RobSpectre/mvf1's own configuration. It tells Codex and OpenCode how to work on mvf1 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 mvf1 configures →

not rated 20repo 2mo ago A scan 601 tokens original MIT
View source ↗ RobSpectre/mvf1
Reuse

Borrowing it

Nothing to install: this file belongs to RobSpectre/mvf1. 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/RobSpectre/mvf1/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/RobSpectre/mvf1

Made for: Codex, OpenCode.

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Per session 601 This file is loaded in full into every session.
When invoked 601 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 $0.00601 $0.00601
Opus 5.5 $0.00240 $0.00240
Sonnet 5.5 $0.00120 $0.00120
Haiku 4.5 $0.00060 $0.00060

Measured 2mo ago against content hash 6478f5578eb9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mvf1 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 · 49 lines

How it starts

The opening of the file, as written. The whole thing — 49 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Project

mvf1 is a Python library, CLI, and MCP server for controlling MultiViewer video players. It talks to the MultiViewer desktop app's GraphQL API at http://localhost:10101/api/graphql using sgqlc. The package is published on PyPI and runs on Python 3.10+.

Layout

  • mvf1/mvf1.py — MultiViewerForF1 client and Player model
  • mvf1/mcp.py — FastMCP server exposing MultiViewer controls as MCP tools
  • mvf1/cmdline.py — Click CLI (players, player, mcp commands)
  • mvf1/mvf1_schema.py — auto-generated GraphQL schema (do not hand-edit)
  • tests/ — pytest tests using unittest.TestCase style with mocks
  • docs/ — Sphinx docs
  • tox.ini — test matrix for Python 3.10–3.13

Setup

pip install -e ./

Requires Python >= 3.10. Dependencies: click, sgqlc, fastmcp.

Commands

Task Command
Run tests (all Pythons) tox
Run tests (current env) pytest --cov=./
Run a single test file pytest tests/test_mvf1.py
CLI help mvf1-cli --help
Start MCP server mvf1-cli mcp
Start MCP with custom URL mvf1-cli mcp --url http://<host>/api/graphql

Conventions

  • Tests use unittest.TestCase with @patch('sgqlc.endpoint.http.HTTPEndpoint.__call__') to mock GraphQL responses.
  • Test fixtures live in tests/players.json.
  • CLI commands catch URLError (MultiViewer not running) and MultiViewerForF1Error (GraphQL errors) and raise click.UsageError.
  • MCP tools in mvf1/mcp.py wrap MultiViewerForF1 client methods and are decorated with @mcp.tool().
  • README mentions black but no formatter/linter config files exist in the repo.

Pitfalls

  • Player creation lag: player_create is non-blocking; new players take 200–800 ms to appear in the API. Callers must delay before querying the new player.
  • Tests require no live server: all HTTP calls are mocked; do not hit localhost:10101 in tests.
  • mvf1/mvf1_schema.py is auto-generated; hand edits will be overwritten.

Read the full file on GitHub · 49 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. 2mo ago First seen · 49 lines · 601 tokens per session scan A 6478f5578eb9

Subscribe to this mod's changes

mvf1 AGENTS.md is an instructions file published in the GitHub repository RobSpectre/mvf1 (20 stars, last pushed 2mo ago), licensed MIT. It adds 601 tokens to every session, about $0.0024 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

mvf1 AGENTS.md compared with instructions from other repositories

mvf1 AGENTS.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
mvf1 AGENTS.mdRobSpectre/mvf1Instructions file202mo agoMITA601Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA9,719GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143kyesterdayMITA7,461Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchainInstructions file149kyesterdayMITA4,680Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA5,516GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA3,093GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file274k2d agoMITA4,313Codex, OpenCode