mdingest: Instructions file for Codex

AGENTS.md

mdingest AGENTS.md is an instructions file for Codex, OpenCode from LOsioChico/mdingest. It costs 9,392 tokens per session, scanned A, original, MIT.

A set of project instructions for mdingest, an API that turns blog, article, and newsletter pages into clean Markdown for language models. It covers communication, code style, terminology, and the project's supported sources.

In plain words
What is it for?
Use it when working on mdingest, including its Medium, Dev.to, and Substack page-ingestion features.
Why use it?
It gives coding agents the project's rules before they change code, reducing inconsistent communication and implementation choices.

Instructions file for CodexOpenCode

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

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

Not installable: its command points at a path on the author’s own machine, so it runs nowhere else. The line is /home/post/p-{id}.

Reuse

Borrowing it

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

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 mdingest AGENTS.md

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

Your own site · 80×15
<a href="https://agentmods.dev/instructions/losiochico/mdingest/agents-md"><img src="https://agentmods.dev/badge/instructions/losiochico/mdingest/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 9,392 This file is loaded in full into every session.
When invoked 9,392 The same file — it is already loaded in full.
Security scan A 1 finding. 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 $0.09392 $0.09392
Opus 5.5 $0.03757 $0.03757
Sonnet 5.5 $0.01878 $0.01878
Haiku 4.5 $0.00939 $0.00939

Measured 10d ago against content hash de30436742da, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mdingest AGENTS.md scanned grade A with 1 finding 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 10d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

### curl first, code second (G13)
AGENTS.md · 577 lines

How it starts

The opening of the file, as written. The whole thing — 577 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — mdingest Operating Contract

API that ingests blog/article/newsletter pages to clean Markdown for LLM consumption. Currently supports Medium (via Freedium), Dev.to (via Forem API), and Substack (free posts via public API + HTML→Markdown). Designed for future providers.

Operating contract for any AI agent (Devin, Claude Code, Cursor) working on this repo. Read this file before writing code.

Communication style

  1. Lead with the next action. First line is something the reader can do.
  2. Number multi-step tasks. Each step is one bounded action.
  3. End with one concrete next step.
  4. Suppress tangents. Finish the first issue, then offer the second.
  5. Restate state every turn. One-line status before the new action.
  6. Specific time estimates. "About 15 minutes if tests cover this" — not "a bit".
  7. Make wins visible. When something works, say so with evidence.
  8. Matter-of-fact errors. State cause and fix. No "Uh oh" or "Oh no".
  9. Cap lists at 5 items. Group into sub-lists or split into steps if longer.
  10. No preamble, no recap, no closers.

Code style

  • Named exports only. No default exports. Greppable, explicit imports.
  • Short files. One responsibility per file. If a file exceeds ~150 lines, split it.
  • Tables over paragraphs in docs and comments. Scannable, not readable.
  • Flat folder structure. Max 2 levels deep under src/.
  • File names say what's inside. freedium.service.ts fetches from Freedium. No utils.ts.
  • No walls of text in comments. If a comment exceeds 3 lines, it's a doc — move it to docs/.
  • Functional style: pure functions where possible, no classes except provider services (kept as classes for the Provider interface).
  • Use TypeScript features: type narrowing, discriminated unions, satisfies, as const.

Terminology

This project uses ingest terminology, not "convert":

Term Use Don't use
Feature name ingest convert
UI component Ingestor.tsx Converter.tsx
Route /ingest /convert
Function handleIngest handleConvert
Result type IngestResult ConvertResult
CSS class ingestor-* converter-*
Button text "Ingest" "Convert"

Read the full file on GitHub · 577 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. 10d ago Changed · +9 tokens per session de30436742da
  2. 11d ago Changed · -13 lines · -33 tokens per session eb3775b412d4
  3. 2mo ago First seen · 590 lines · 9,416 tokens per session scan A 333ac79726d9

Subscribe to this mod's changes

mdingest AGENTS.md is an instructions file published in the GitHub repository LOsioChico/mdingest (1 stars, last pushed 11d ago), licensed MIT. It adds 9,392 tokens to every session, about $0.0376 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Related

mdingest AGENTS.md compared with instructions from other repositories

mdingest AGENTS.md next to 6 instructions from other repositories
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mdingest AGENTS.mdLOsioChico/mdingestInstructions file111d agoMITA9,392Codex, OpenCode
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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