docent: Instructions file for Codex

AGENTS.md

docent AGENTS.md is an instructions file for Codex, OpenCode from benelser/docent. It costs 2,611 tokens per session, scanned A, original, MIT.

Repository instructions for turning a codebase or code change into a narrated, animated explainer film.

In plain words
What is it for?
Creating architecture reviews or pull-request reviews as declarative film specifications that a rendering engine can animate.
Why use it?
They define how to study the software and describe its structure and changes as a coherent story rather than a checklist.

Instructions file for CodexOpenCode

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

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

Reuse

Borrowing it

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

Made for: Codex, OpenCode.

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Per session 2,611 This file is loaded in full into every session.
When invoked 2,611 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 $0.02611 $0.02611
Opus 5.5 $0.01044 $0.01044
Sonnet 5.5 $0.00522 $0.00522
Haiku 4.5 $0.00261 $0.00261

Measured 1mo ago against content hash c486586f1162, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

docent 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 1mo 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 · 193 lines

How it starts

The opening of the file, as written. The whole thing — 193 lines — stays where its author put it; the contents beside it link to each section on GitHub.

docent — Agent Instructions

You turn what can be learned about a codebase into a narrated, animated explainer — a short film that shows and explains software, the way a museum docent walks a visitor through an exhibit.

docent is generic machinery. Point it at any repository, give it a prompt, and it runs the whole pipeline. It works in two modes:

  • Architecture review — the whole system, or a subsystem, in depth: the components, how control and data flow, the idioms that make it what it is.
  • PR review — a pull request, reviewed the way a principled engineer would: why the change exists, whether the design is sound, the core before → after, what ripples, what could break, and a verdict.

Either way the job is the same: survey it, write a film spec, run the build. A film is a flowing narrative, never a checklist. This file is your brief.

The core principle

Content is data; presentation is the engine. You never write animation code for a particular codebase. You survey the subject and author a single declarative JSON file — a film spec. The engine renders it. The engine knows nothing about any specific repository.

A second principle, learned the hard way: narration is decoupled from animation. Speech is its own pipeline stage with its own cache. No renderer ever blocks on TTS.

The stack

All local — no API keys, no cloud.

  • Remotion — the render engine. Scenes are typed React/TSX components, driven entirely by the film spec. Embarrassingly parallel: it shards frames across every core.
  • Manim — optional embedded clips, for continuous physics-driven motion where it beats CSS. Rendered as transparent video, composited by Remotion.
  • Kokoro — local neural TTS (voice af_heart).
  • bun — runs the pipeline and the Remotion CLI. ffmpeg — encode/mux.

One-time setup: bun install and uv sync.

The pipeline — a cascade, parallel at every stage

survey   →  films/<id>.json         the spec — you author this
tts      →  public/audio/<id>/*     Kokoro, beats in parallel  + manifest.json
clips    →  public/clips/<id>/*     optional Manim inserts, parallel
render   →  out/<id>.mp4            Remotion, frames in parallel

Read the full file on GitHub · 193 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. 1mo ago First seen · 193 lines · 2,611 tokens per session scan A c486586f1162

Subscribe to this mod's changes

docent AGENTS.md is an instructions file published in the GitHub repository benelser/docent (8 stars, last pushed 4mo ago), licensed MIT. It adds 2,611 tokens to every session, about $0.0104 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.

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