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Accept Language Parser

Accept Language Parser MCP for AI. Get the definitive order of preferred languages for routing.

Claude Claude
ChatGPT ChatGPT
Cursor Cursor
Gemini Gemini
Windsurf Windsurf
VS Code VS Code
JetBrains JetBrains
Vercel Vercel
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Connect to your AI in seconds.

Parse Accept Language By taking a raw HTTP header string and returning an ordered, deterministic list of language preferences with their quality weights.

This correctly follows RFC 7231 standards, telling your agent exactly which languages a user prefers for global routing or content negotiation.

What your AI can do

Parse accept language

Passes a raw Accept-Language header string and returns an ordered list of user language preferences with their quality weights.

Determine Language Priority

Reads a raw header string and outputs the user's preferred languages in order of importance.

Included with Plan

Waiting for input…

AI Agent

Accept Language Parser (1 Tools)

The single tool allows your agent to parse raw HTTP Accept-Language header strings into a prioritized, ordered list of user language preferences.

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Start using Accept Language Parser on Vinkius

Parse Accept Language

Passes a raw Accept-Language header string and returns an ordered list of user language preferences with their quality weights.

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Claude AI

Claude AI

1

Open Claude Settings

Go to claude.ai, click your profile icon, then navigate to Customize → Connectors.

2

Add Custom Connector

Click the "+" button and select Add custom connector. Paste your Vinkius endpoint URL:

https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp

Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. For OAuth-protected servers, expand Advanced settings to add credentials.

3

Start a conversation

Open a new chat. The Accept Language Parser integration is available immediately — no restart needed.

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Works with Claude, ChatGPT, Cursor, and more

The Model Context Protocol standardizes how applications expose capabilities to LLMs. Instead of operating in isolation, your AI gains direct access to external platforms, live data, and real-world actions through secure, standardized connections.

This connection provides 1 powerful capabilities that interface natively with Claude, ChatGPT, Cursor, and other compatible AI platforms. No middleware. No custom integration required.

Trying to guess a user's language preference from raw headers is a nightmare.

Right now, when your agent reads an 'Accept-Language' header, it sees a mess: `de,en-GB;q=0.7,ja;q=0.3`. The code has to manually parse the commas, figure out which codes have quality weights, and then sort them all based on those floating point numbers. If your logic fails to respect even one of those tiny q-factors, you risk sending content in the wrong language or order.

With this MCP, that entire headache vanishes. You simply feed the raw header string into the tool. It outputs a perfectly ordered list: the languages sorted from most preferred to least preferred. Your agent gets clean, actionable data without having to worry about compliance details.

Getting Language Priority with parse_accept_language

Manually parsing this header means writing complex regex and handling floating point comparisons across multiple languages. You're constantly fighting edge cases where the weights are close, or where a language is listed without a weight, causing unpredictable behavior.

Now you can call `parse_accept_language`. It handles all the complexity behind the scenes. Your agent gets a deterministic, sorted list, making global routing simple and reliable.

What your AI can actually do with this

When you build an application that serves users globally, figuring out the right language is non-negotiable. You can't just guess based on IP location. This MCP reads the raw 'Accept-Language' header—that string of codes and quality weights sent by a browser—and turns it into a clean list. It processes complex inputs like "en-US,pt-BR;q=0.9,fr;q=0.8" correctly, respecting every quality score (or q-factor) exactly as the HTTP standard dictates.

The result is a prioritized sequence of languages, with the user's top choice listed first. This eliminates guesswork from your routing logic. If you're using Vinkius for other services, this MCP ensures language detection is always rock solid and compliant.

Built · Hosted · Managed by Vinkius Accept Language Parser - Global Routing Tool
Server ID 019e385f-dffc-7044-8e78-ad98c51cde53
Vinkius Inspector
Compliance Grade A+
Score 100/100
Vinkius Inspector Badge — Score 100/100

Questions you might have

How does parse_accept_language handle multiple quality weights? +

It processes them accurately according to RFC 7231. It correctly sorts the languages based on their assigned 'q' factor, making sure the highest weighted language is listed first.

Does parse_accept_language support only US English headers? +

No. This MCP supports all recognized HTTP Accept-Language formats globally and reliably parses weights for any combination of locale codes.

Is this better than just looking at the first language listed? +

Yes, absolutely. The first listed language might not be the most preferred; it only means it's listed first. This MCP determines true preference based on calculated quality weights.

Can I use parse_accept_language with my existing i18n logic? +

You can. By feeding this MCP the raw header, you get a guaranteed priority list that should slot right into your current decision-making process for content delivery.

What happens if I pass malformed data to parse_accept_language? +

It handles invalid headers gracefully. The tool won't crash your process; instead, it returns a clear error or the valid subset of languages found. This built-in validation keeps your global routing agent stable even when receiving bad HTTP data.

Is parse_accept_language performant enough for high-volume API calls? +

Yes, it's highly optimized for speed and low latency. Because it's a dedicated parsing function, you won't encounter bottlenecks common with general string processing. You can expect near-instantaneous results even when running through hundreds of headers per second.

How do I integrate parse_accept_language into my existing backend service? +

You simply call it as a function, passing the raw Accept-Language header string. It's built to drop right into standard environments like Python or Node without requiring complex setup steps or custom middleware.

What result does parse_accept_language return if the header is completely missing? +

The function handles null, empty, or absent inputs by returning a predictable, empty ordered list. This reliable behavior allows your agent to execute a safe fallback logic without ever encountering a runtime error.

What is a quality weight (q-factor)? +

A value from 0 to 1 indicating preference. q=1 (default) is highest priority. q=0 means the language is explicitly not accepted.

Does it handle regional subtags? +

Yes. pt-BR is parsed as code=pt, region=BR. en-US as code=en, region=US. The region is separated from the language code automatically.

What if no quality value is specified? +

Languages without an explicit q-value default to q=1 (highest priority), following the HTTP specification.

Built & Managed by Vinkius 30s setup 1 tools

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Vinkius runs on Claude Claude
Vinkius runs on ChatGPT ChatGPT
Vinkius runs on Cursor Cursor
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Vinkius runs on VS Code VS Code
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