What is mcp.opensubtitles.com CLAUDE.md?

A set of project instructions for an AI coding assistant working on an OpenSubtitles server. The server is written in TypeScript and Node.js and connects to the OpenSubtitles service to search for and download subtitles.

Use it when installing dependencies, building or running the server, running tests, or debugging its Model Context Protocol connection to OpenSubtitles.

It gives the assistant the project background, common commands, and testing and debugging guidance in one place. This reduces guesswork when changing or checking the server.

How opensubtitles/mcp.opensubtitles.com configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to opensubtitles/mcp.opensubtitles.com. 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/opensubtitles/mcp.opensubtitles.com/master/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/opensubtitles/mcp.opensubtitles.com

Made for: Claude Code.

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/opensubtitles/mcp.opensubtitles.com/claude-md/github.svg)](https://agentmods.dev/instructions/opensubtitles/mcp.opensubtitles.com/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/opensubtitles/mcp.opensubtitles.com/claude-md"><img src="https://agentmods.dev/badge/instructions/opensubtitles/mcp.opensubtitles.com/claude-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/opensubtitles/mcp.opensubtitles.com/claude-md"><img src="https://agentmods.dev/badge/instructions/opensubtitles/mcp.opensubtitles.com/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 3,024 This file is loaded in full into every session.

When invoked 3,024 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.

Model	Per session	Once invoked
Fable 5.1	$0.03024	$0.03024
Opus 5	$0.01512	$0.01512
Sonnet 5	$0.00605	$0.00605
Haiku 4.5	$0.00302	$0.00302

Measured 9d ago against content hash 56a2d5c70a13, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

mcp.opensubtitles.com CLAUDE.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 9d 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.

- **Official API Specification**: Use `curl https://stoplight.io/api/v1/projects/opensubtitles/opensubtitles-api/nodes/open_api.json` for complete OpenAPI 3.0.3 specification

CLAUDE.md · 353 lines

How it starts

The opening of the file, as written. The whole thing — 353 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

This is a TypeScript/Node.js-based MCP (Model Context Protocol) server for OpenSubtitles API integration. The server provides subtitle search and download functionality with a freemium model, using the existing Kong gateway at api.opensubtitles.com for API management.

Commands

Development Commands

npm install                # Install dependencies
npm run build              # Build TypeScript to JavaScript
npm run watch              # Development with auto-rebuild
npm run dev                # Build and run the server
npm test                   # Run tests (currently placeholder)
npm run test:evals         # Run MCP evaluation tests (when implemented)
npm run inspector          # Debug with MCP Inspector
npm run prepublish         # Build before publishing

Testing and Debugging

npx @modelcontextprotocol/inspector dist/index.js  # MCP Inspector for debugging
npx mcp-eval src/evals/evals.ts dist/index.js       # Run evaluation tests

Architecture

Core Structure (Planned)

MCP Server: TypeScript implementation using @modelcontextprotocol/sdk
API Integration: All requests go through Kong gateway (api.opensubtitles.com)
Rate Limiting: Handled by Kong configuration
Deployment: mcp.opensubtitles.com domain
Distribution: NPM package @opensubtitles/mcp-server

Planned Directory Structure

src/
├── index.ts               # Main MCP server entry point
├── server.ts              # MCP server implementation
├── api-client.ts          # Kong gateway client wrapper
├── tools/                 # MCP tool implementations
│   ├── search-subtitles.ts
│   ├── download-subtitle.ts
│   └── calculate-file-hash.ts
└── utils/                 # Helper functions
    ├── hash-calculator.ts
    └── subtitle-parser.ts

MCP Tools to Implement

search_subtitles: Search with all OpenSubtitles API parameters (query, imdb_id, tmdb_id, moviehash, etc.)
download_subtitle: Download subtitle content (rate limited via Kong)
calculate_file_hash: Calculate OpenSubtitles hash for movie files

Read the full file on GitHub · 353 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.

9d ago First seen · 353 lines · 3,024 tokens per session scan A 56a2d5c70a13

Subscribe to this mod's changes

mcp.opensubtitles.com CLAUDE.md is an instructions file published in the GitHub repository opensubtitles/mcp.opensubtitles.com (2 stars, last pushed 11mo ago), licensed MIT. It adds 3,024 tokens to every session, about $0.0151 per session on Opus 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.

next.js AGENTS.md

AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.

vercel/next.js · 7,296 tokens

codex AGENTS.md

AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.

openai/codex · 5,153 tokens

vscode buildNext.instructions.md

Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).

microsoft/vscode · 6,785 tokens

mcp.opensubtitles.com: Instructions file for Claude Code