Guild Wars 1 Build Compiler

Name: Guild Wars 1 Build Compiler
Author: Graphmaxer

by Graphmaxerversion 1.1.3i★ –iRuns in the cloud

Registry nameio.github.Graphmaxer/gw1-mcp

Install

Overview

Description from the maker (original English)

GW1 build compiler: skill data, template code encode/decode, validation, hero roster. Read-only.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs in the cloud
Transport: Streamable HTTP
Category: Other

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
The registry lists no key to fill in.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://gw1-mcp.graphmaxer.workers.dev/mcp

Run this in your terminal

claude mcp add --transport http gw1 https://gw1-mcp.graphmaxer.workers.dev/mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "gw1": {
      "url": "https://gw1-mcp.graphmaxer.workers.dev/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "gw1": {
      "type": "http",
      "url": "https://gw1-mcp.graphmaxer.workers.dev/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://gw1-mcp.graphmaxer.workers.dev/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account Graphmaxer, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Otheri

More stars than 0% of the other 32686 servers in this category
Published to the registry more recently than 37% of the other 32686 servers in this category
Basic checks equal to or better than 100% of the other 32686 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Guild Wars 1 Build Compiler safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.1.3) reached the registry 2 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, Microsoft Exchange Online MCP

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

gw1-mcp

A Guild Wars 1 build compiler for LLMs

An MCP (Model Context Protocol) server that gives any compatible LLM client (Claude, ChatGPT, Cursor…) reliable, deterministic knowledge of Guild Wars 1 builds: skill data lookup, official template code encoding/decoding, and build validation.

The MCP is a compiler, not a brain. The LLM does the strategic reasoning; this server does the things that must be exact.

Why not just ask the LLM?

Ask an AI assistant for a Guild Wars build without this server and you typically get: a plausible-sounding bar with a skill that does not exist, an attribute spread that exceeds the point budget, stats quoted from a decade-old balance patch — and a template code that decodes to garbage when you paste it in-game, because codes are bit-packed and cannot be hallucinated character-by-character.

With gw1-mcp connected, the same assistant looks up the 1516 real skills (current with Reforged balance, refreshed weekly), validates the build against the actual game rules, and hands you an official template code produced by an encoder — not predicted by a language model. The strategic conversation stays exactly as good as your assistant; the facts stop being wrong.

Tools

get_skill — full record for one skill (by exact name or template id), with closest-match suggestions on typos. Official French skill names resolve too (Sceau de guérison -> Healing Signet); every other name field is English-only
search_skills — filtered search: profession, attribute, campaign, elite, name substring
decode_template — in-game template code → professions, attributes, 8 skills with stats
encode_template — named build → validated, official in-game template code
validate_build — GW1 rule check: one elite max, profession/attribute ownership, primary attributes, duplicates
get_hero — hero record by exact name or GWCA id
list_heroes — hero roster with professions, campaigns and unlock notes, filterable by profession/campaign
decode_pawned_team — paw-ned2 team blobs (PvXwiki team pages) → every bar decoded

Resources: gw1://guide/build-workflow (methodology for the LLM), gw1://meta (professions, attribute lines, campaigns, skill-type list and data import date) and gw1://heroes.

Quick start

pnpm install

pnpm -r test pnpm --filter @gw1-mcp/gw-mcp dev # stdio server

Packages

packages/gw-template — template code codec (zero dependencies; round-trip tested against in-game/PvX codes and differentially fuzzed against @buildwars/gw-templates)
packages/gw-data — game data (1516 skills, Reforged-current) imported from build-wars/gw-skilldata (code MIT; skill descriptions under GFDL / CC BY-NC-SA — see THIRD_PARTY_NOTICES.md)

The codec is verified four ways: 27 golden fixtures (including nine live in-game emissions) covering all 10 primary professions and all 5 campaigns (sourced from PvXwiki, gw1builds.com, the official wiki and the pre-2007 in-game format, several verified down to the skill-id level), fuzzed round-trips, differential testing against an independent implementation, and malformed-input rejection tests. Validation rules are table-tested one by one. pnpm test:coverage for the numbers.

packages/gw-mcp — the MCP server (transport-agnostic core + stdio entry)
packages/gw-worker — Streamable HTTP wrapper (Hono), runs on Cloudflare Workers and Node

Deploy to Cloudflare Workers

pnpm --filter @gw1-mcp/gw-worker check    # offline bundling validation

pnpm --filter @gw1-mcp/gw-worker deploy # needs wrangler login once

The server is stateless (a fresh McpServer per request over bundled data), so it fits the Workers model with zero configuration: no Durable Objects, no KV, no secrets. Free plan is plenty.

Connect it

claude.ai / Claude app: Settings → Connectors → Add custom connector → https://gw1-mcp. .workers.dev/mcp
Claude Code: claude mcp add --transport http gw1 https://…/mcp or locally over stdio: claude mcp add gw1 -- pnpm --filter @gw1-mcp/gw-mcp dev
Local HTTP without Cloudflare: pnpm --filter @gw1-mcp/gw-worker dev:node then point any client at http://localhost:8787/mcp

Regenerating game data

pnpm --filter @gw1-mcp/gw-data update @buildwars/gw-skilldata --latest

pnpm --filter @gw1-mcp/gw-data run import:data

or, to import the upstream's published release files (what the weekly workflow does):

pnpm --filter @gw1-mcp/gw-data run import:data -- https://build-wars.github.io/gw-skilldata

GWToolbox integration

gwtoolbox-plugin/ contains a read-only GWToolbox plugin adding /exportaccount: it copies your account state as JSON to the clipboard — which includes your current character's name, so read it before pasting it somewhere public. The export has two skill lists — learnedCharacterSkills (skills your current character has actually learned) and unlockedAccountSkills (everything unlocked account-wide, e.g. for heroes). Paste it in your conversation and pass the list that matches what you're building for as unlockedSkillIds to validate_build / encode_template: use learnedCharacterSkills for a build your character will equip, or unlockedAccountSkills for hero bars — proposed skills you don't own are flagged. Windows build instructions in gwtoolbox-plugin/README.md.

Roadmap

MCP resources for build archetypes and hero constraints, hero availability from campaign progression, and upstreaming the account export into GWToolbox itself. See CLAUDE.md for the full architecture notes.

_This project is not affiliated with ArenaNet or NCSoft. Guild Wars is a trademark of NCSoft Corporation. Game data is imported from build-wars/gw-skilldata; its code is MIT but the skill descriptions originate from the Guild Wars community wikis under the GFDL and CC BY-NC-SA 2.5 (a NonCommercial license) — see THIRD_PARTY_NOTICES.md. Format documentation from the Guild Wars Wiki._

Development

pnpm install && pnpm -r test

Node >= 22, pnpm 11. Nothing builds to dist — exports point at the .ts sources and the worker bundles via wrangler. See CONTRIBUTING.md to get started and CLAUDE.md for the full architecture, conventions and the honest register of known debts.

License

Source code: MIT (see LICENSE). Bundled game data carries separate terms — see THIRD_PARTY_NOTICES.md.

Guild Wars 1 Build Compiler

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

Microsoft Exchange Online MCP

README from the maker

Why not just ask the LLM?

Tools

Quick start

Packages

Deploy to Cloudflare Workers

Connect it

Regenerating game data

or, to import the upstream's published release files (what the weekly workflow does):

GWToolbox integration

Roadmap

Development

License