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You pick the language per connection through the URL path (see [Choose your language](#step-1-choose-your-language-and-get-your-url)).\n\nAccelByte hosts the Extend SDK MCP Server for you — **you don't need to install or run anything locally**. Just point your AI assistant at the hosted MCP URL for your language. There's **no sign-in**: the server only exposes read-only SDK reference data. Prefer to run it yourself? See [Running Locally & Self-Hosting](https://github.com/AccelByte/ags-extend-sdk-mcp-server/blob/master/docs/LOCAL.md).\n\n---\n\n## Quick Install\n\nPaste this into your AI coding assistant — it will fetch the install guide, ask you a couple of questions, and configure everything for you:\n\n```\nInstall the AGS Extend SDK MCP server for me. Fetch and follow the instructions at\nhttps://raw.githubusercontent.com/AccelByte/ags-extend-sdk-mcp-server/refs/heads/master/INSTALL.md\n```\n\nWorks in **VS Code Copilot**, **Cursor**, **Claude Code**, **Antigravity**, and **Gemini CLI**.\n\n> **Claude Desktop users:** The simplest path is **Settings → Connectors → Add custom connector** (Name: `extend-sdk`, URL: your MCP URL) — no AI installer needed. See [Claude Desktop](#claude-desktop) below.\n>\n> If you want to use the Quick Install prompt above, switch to the **Code** tab first (Chat and Cowork can't edit your config file).\n>\n> ![Claude Desktop — Code tab](https://raw.githubusercontent.com/AccelByte/ags-extend-sdk-mcp-server/master/docs/images/claude-desktop-code.png)\n\nPrefer to do it yourself? See [Manual Install](#manual-install) below.\n\n---\n\n## Manual Install\n\n### Step 1: Choose your language and get your URL\n\nThe MCP URL is the hosted server's base URL followed by `/extend-mcp/{language}`:\n\n```\nhttps:///extend-mcp/{language}\n```\n\n| Language | URL path |\n|---|---|\n| C# | `/extend-mcp/csharp` |\n| Go | `/extend-mcp/go` |\n| Java | `/extend-mcp/java` |\n| Python | `/extend-mcp/python` |\n\n- `` is the host of your organization's deployment — ask your AccelByte administrator if you're not sure.\n- One hosted instance serves every language. To switch language later, just change the trailing path segment (e.g. `/extend-mcp/python` → `/extend-mcp/go`). Requesting an unknown language returns HTTP `400`.\n- The base path (`/extend-mcp`) with no language serves the server's configured default language.\n\n> **No hosted instance?** You can run the server yourself with Docker — see [Running Locally & Self-Hosting](https://github.com/AccelByte/ags-extend-sdk-mcp-server/blob/master/docs/LOCAL.md).\n\n### Step 2: Configure your client\n\nThe server uses **Streamable HTTP** transport. Clients that support HTTP transport connect to the URL directly. Clients that only support **stdio** transport use [`mcp-remote`](https://www.npmjs.com/package/mcp-remote) as a bridge.\n\n> **Need `mcp-remote`?** It runs via `npx`, so you need **Node.js 18+ with `npx` available** — verify with `npx --version`. No global install required.\n\nSubstitute your URL from Step 1 wherever you see `` below.\n\n#### Visual Studio Code (Copilot)\n\n`.vscode/mcp.json` in your workspace (or user `settings.json`):\n\n```json\n{\n \"servers\": {\n \"extend-sdk\": {\n \"type\": \"http\",\n \"url\": \"\"\n }\n }\n}\n```\n\nIf your client can't reach an HTTP server, swap to: `{ \"command\": \"npx\", \"args\": [\"-y\", \"mcp-remote\", \"\"] }`.\n\nSee the [VS Code MCP documentation](https://code.visualstudio.com/docs/copilot/customization/mcp-servers).\n\n#### Cursor\n\n`.cursor/mcp.json` in your workspace (or user settings):\n\n```json\n{\n \"mcpServers\": {\n \"extend-sdk\": {\n \"type\": \"http\",\n \"url\": \"\"\n }\n }\n}\n```\n\nIf your client can't reach an HTTP server, swap to: `{ \"command\": \"npx\", \"args\": [\"-y\", \"mcp-remote\", \"\"] }`.\n\nSee the [Cursor MCP documentation](https://cursor.com/docs/context/mcp#using-mcpjson).\n\n#### Claude Code\n\n```bash\nclaude mcp add --transport http extend-sdk \n```\n\nFallback (stdio-only environments): `claude mcp add extend-sdk -- npx -y mcp-remote `.\n\nSee the [Claude Code MCP documentation](https://code.claude.com/docs/en/mcp#installing-mcp-servers).\n\n#### Antigravity\n\n`mcp_config.json` in your project root:\n\n```json\n{\n \"mcpServers\": {\n \"extend-sdk\": {\n \"type\": \"http\",\n \"url\": \"\"\n }\n }\n}\n```\n\nIf your client can't reach an HTTP server, swap to: `{ \"command\": \"npx\", \"args\": [\"-y\", \"mcp-remote\", \"\"] }`.\n\nSee the [Antigravity MCP documentation](https://antigravity.google/docs/mcp#connecting-custom-mcp-servers).\n\n#### Gemini CLI\n\n```bash\ngemini mcp add --transport http extend-sdk \n```\n\nFallback (stdio-only environments): `gemini mcp add extend-sdk -- npx -y mcp-remote `.\n\nSee the [Gemini CLI MCP documentation](https://geminicli.com/docs/tools/mcp-server/#configure-the-mcp-server-in-settingsjson).\n\n#### Claude Desktop\n\n**Option A — Custom Connector (recommended)**\n\n1. Open **Settings → Connectors → Add custom connector** (under the \"Customize\" area).\n2. Fill in **Name**: `extend-sdk` and **Remote MCP server URL**: your `` from Step 1.\n3. Save.\n\n> **Don't see \"Add custom connector\"?** Some Team and Enterprise plans disable custom connectors via workspace policy. If the option is missing or greyed out, use Option B.\n\n**Option B — `mcp-remote` config file (fallback)**\n\nEdit `claude_desktop_config.json`:\n\n- **macOS**: `~/Library/Application Support/Claude/claude_desktop_config.json`\n- **Windows**: `%APPDATA%\\Claude\\claude_desktop_config.json`\n\n```json\n{\n \"mcpServers\": {\n \"extend-sdk\": {\n \"command\": \"npx\",\n \"args\": [\"-y\", \"mcp-remote\", \"\"]\n }\n }\n}\n```\n\nRestart Claude Desktop after saving.\n\n---\n\n## Using the Tools\n\nOnce connected, your assistant has access to these tools. In your assistant's chat, try the example prompts below — give permission to run the tools when requested.\n\n### `search-symbols`\n\nSearch Extend SDK symbols by name, tags, or description, with fuzzy matching. Returns a paginated list of summaries.\n\n> *\"Search for symbols related to user\"* · *\"Find symbols for inventory\"*\n\n### `describe-symbols`\n\nGet full details for specific symbols by ID — fields, parameters, imports, example usage, return type, and required permissions.\n\n> *\"Describe the `AdminCreateUser@iam` and `User@iam` symbols\"*\n\n### `create-extend-app`\n\nA prompt template that clones an Extend app template repository and opens it (in a Dev Container when available) so you can start from a working sample.\n\n> Invoke the `create-extend-app` prompt and follow the scenario / template / language completions.\n\n> [!TIP]\n> When coding with this MCP server, start from an Extend SDK getting-started sample or an Extend app template instead of a blank project, and add relevant source files as context for better results.\n\n---\n\n## Running it yourself\n\nPrefer to run the server locally (stdio) or host the HTTP server yourself? See **[Running Locally & Self-Hosting](https://github.com/AccelByte/ags-extend-sdk-mcp-server/blob/master/docs/LOCAL.md)** for Docker usage, environment variables, HTTP endpoints, smoke tests, developing from source, and releasing the image.\n\n---\n\n## Troubleshooting\n\n### Tool calls fail / the server returns `400`\n\nCheck the language in your URL path. It must be one of `csharp`, `go`, `java`, or `python` (e.g. `/extend-mcp/go`). An unknown language returns HTTP `400`.\n\n### Client can't connect to the HTTP URL\n\nSome clients only support stdio transport. Switch that client to the `mcp-remote` bridge config shown in [Step 2](#step-2-configure-your-client). It needs Node.js 18+ with `npx` available (`npx --version`).\n\n### \"Connection refused\" or the host is unreachable\n\nConfirm the `` and full URL are correct (ask your AccelByte administrator), and that your network can reach it.\n\n---\n\n## Documentation\n\n- [Installation Guide](https://github.com/AccelByte/ags-extend-sdk-mcp-server/blob/master/INSTALL.md) — followed by the Quick Install prompt; readable on its own\n- [Running Locally & Self-Hosting](https://github.com/AccelByte/ags-extend-sdk-mcp-server/blob/master/docs/LOCAL.md) — Docker, environment variables, HTTP endpoints, development, and releasing the image\n- [Postman Collection](https://github.com/AccelByte/ags-extend-sdk-mcp-server/blob/master/tests/postman/README.md) — import and Newman smoke-test instructions for `search-symbols` and `describe-symbols`\n\n## Contributions\n\nThis repository is published as-is. For bug reports and questions, please open an issue.\n","changelogMarkdown","videoKey","requiredSecretsJson","publishedAt","priceCents","trialDays","upstream",{"_95":96,"_97":98,"_99":100,"_101":102,"_103":-5,"_104":105},"requiredSecrets",[],"tags",[],"assets",[],"stats",{"_93":59,"_94":59},"ratingAvg","reviewCount","topics",[],"license","Apache-2.0","language","TypeScript","registryName","io.github.AccelByte/ags-extend-sdk-mcp-server","homepage","packages",[],"ENV",{"_108":109,"_110":111,"_112":113},"ENVIRONMENT","production","TURNSTILE_SITE_KEY","0x4AAAAAAB8-rEI2gNDf_QhU","SENTRY_DSN","https://45fd1229f78089d5c3ee78be128030e1@o4510583261757440.ingest.de.sentry.io/4510584253448272"]