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node-csfd-api: Instructions file for Codex

AGENTS.md

node-csfd-api AGENTS.md is an instructions file for Codex, OpenCode from bartholomej/node-csfd-api. It costs 932 tokens per session, scanned A, original, MIT.

Repository instructions for AI coding agents working on a TypeScript scraper and API for CSFD.cz, the Czecho-Slovak Film Database. They describe the project's layers, data flow, and rules for code generation.

In plain words
What is it for?
Use them when adding or maintaining fetchers, HTML parsers, services, typed data objects, the Node.js API, or the Model Context Protocol (MCP) server, which lets AI tools call project functions.
Why use it?
They give an agent the project context it needs before changing code, reducing architectural mistakes and fragile scraping changes.

Instructions file for CodexOpenCode

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

This is bartholomej/node-csfd-api's own configuration. It tells Codex and OpenCode how to work on node-csfd-api 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 node-csfd-api configures β†’

not rated 66repo changed 5d ago A scan 932 tokens original MIT
View source β†— bartholomej/node-csfd-api
Reuse

Borrowing it

Nothing to install: this file belongs to bartholomej/node-csfd-api. 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/bartholomej/node-csfd-api/master/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/bartholomej/node-csfd-api

Made for: Codex, OpenCode.

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Per session 932 This file is loaded in full into every session.
When invoked 932 The same file β€” it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file β€” 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 $0.00932 $0.00932
Opus 5.5 $0.00373 $0.00373
Sonnet 5.5 $0.00186 $0.00186
Haiku 4.5 $0.00093 $0.00093

Measured 5d ago against content hash d8666d989d61, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

node-csfd-api AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories β€” prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency β€” 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 Β· 77 lines

How it starts

The opening of the file, as written. The whole thing β€” 77 lines β€” stays where its author put it; the contents beside it link to each section on GitHub.

AI Agent Guide for node-csfd-api

This file serves as the primary context source for AI agents (Claude, Gemini, GPT) working on this repository.

🧠 Project Identity

Project: node-csfd-api Description: A TypeScript wrapper and scraper for CSFD.cz (Czecho-Slovak Film Database). It exposes data via a Node.js API and a Model Context Protocol (MCP) server for AI consumption. Core Stack: TypeScript, Node.js, node-html-parser, Zod, Hono.

πŸ—ΊοΈ High-Level Architecture

The project is divided into layers. Do not mix concerns.

  1. Core Scraper (src/):

    • Fetchers (src/fetchers): Handles HTTP requests, User-Agents, and cookies.
    • Helpers (src/helpers): CRITICAL. Pure functions that take HTML Elements and return raw data strings/objects.
    • Services (src/services): Orchestrators. They call Fetchers, then use Helpers to parse data, and return typed DTOs.
    • DTOs (src/dto): TypeScript interfaces defining the shape of the data.
    • Anubis (src/anubis): Self-contained client for ČSFD's proof-of-work browser check. It must stay portable (Node, browsers, React Native), so no Node built-ins.

  2. MCP Server (src/bin/mcp-app.ts, stdio entry in src/bin/mcp-server.ts):

    • The AI interfacing layer. It wraps src/services into tools executable by LLMs.
    • See .ai/MCP_ARCH.md for specific rules.

  3. REST Server (src/bin/server.ts):

    • A Hono server on Node exposing the scraper as a REST API. Routes live in src/bin/server-app.ts (createApp), server.ts only reads env and listens.

  4. CLI (src/cli.ts):

    • The csfd command. Subcommands (exports, search, movie lookup) live in src/bin/.

⚑ Golden Rules for Code Generation

1. Scraping & robustness

  • Never put CSS selectors directly in Service classes. Always wrap them in a Helper function in src/helpers.
  • Never assume an element exists. CSFD changes layouts. Use optional chaining ?. or try/catch inside helpers.
  • See .ai/SCRAPING.md for the parsing strategy.

Read the full file on GitHub Β· 77 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. 5d ago Changed Β· +26 tokens per session d8666d989d61
  2. 27d ago Changed Β· +11 lines Β· +218 tokens per session d164e0ab68c2
  3. 2mo ago First seen Β· 66 lines Β· 688 tokens per session scan A f528840dc211

Subscribe to this mod's changes

node-csfd-api AGENTS.md is an instructions file published in the GitHub repository bartholomej/node-csfd-api (66 stars, last pushed 4d ago), licensed MIT. It adds 932 tokens to every session, about $0.0037 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.

Backend and APIsLanguagesTypeScriptcsfdcsfd-apijavascriptmovieratings
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