【迁移】迁移Codex Unity MCP工具到UnityAI

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Shiliang
2026-07-03 15:04:38 +08:00
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# CrystalBattle Unity MCP
This local MCP server exposes selected CrystalBattle Unity Editor commands to Codex.
## Architecture
- Codex connects to this MCP server over stdio.
- The MCP server calls the Unity Editor bridge at `http://127.0.0.1:17777`.
- The Unity Editor bridge executes Unity API work on the editor main thread.
## Unity Setup
Open `CrystalBattle_Client` in Unity. The bridge starts automatically after scripts compile.
Manual controls are available from the bridge panel:
```text
Tools/Codex Unity MCP/Bridge Panel
```
The panel shows the current connection status, endpoint, listener thread state, pending command count, total request count, recent command, and cached log count. It also includes buttons to start, stop, restart, copy the endpoint, and print status to the Unity Console.
## Install Dependencies
From this directory:
```powershell
pnpm install
```
If `pnpm` is not on `PATH`, use the Codex bundled runtime:
```powershell
& "C:\Users\admin\.cache\codex-runtimes\codex-primary-runtime\dependencies\bin\pnpm.cmd" install
```
## Tools
- `unity_health`
- `unity_refresh_assets`
- `unity_execute_menu_item`
- `unity_get_console_logs`
- `unity_generate_ui_prefab`
- `unity_export_prefab_to_json`
## Environment
Optional:
```text
UNITY_MCP_BRIDGE_URL=http://127.0.0.1:17777
```
## Codex Config
The workspace includes `.codex/config.toml` with a `crystalbattle-unity` MCP server entry.
Restart Codex after dependency installation so the new MCP server is discovered.

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{
"name": "codex-unity-mcp",
"version": "0.1.0",
"private": true,
"type": "module",
"description": "Local MCP server that exposes CrystalBattle Unity Editor commands to Codex.",
"main": "src/server.mjs",
"scripts": {
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},
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"zod": "^3.25.76"
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hasBin: true
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peerDependencies:
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zod@3.25.76:
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snapshots:
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dependencies:
hono: 4.12.27
'@modelcontextprotocol/sdk@1.29.0(zod@3.25.76)':
dependencies:
'@hono/node-server': 1.19.14(hono@4.12.27)
ajv: 8.20.0
ajv-formats: 3.0.1(ajv@8.20.0)
content-type: 1.0.5
cors: 2.8.6
cross-spawn: 7.0.6
eventsource: 3.0.7
eventsource-parser: 3.1.0
express: 5.2.1
express-rate-limit: 8.5.2(express@5.2.1)
hono: 4.12.27
jose: 6.2.3
json-schema-typed: 8.0.2
pkce-challenge: 5.0.1
raw-body: 3.0.2
zod: 3.25.76
zod-to-json-schema: 3.25.2(zod@3.25.76)
transitivePeerDependencies:
- supports-color
accepts@2.0.0:
dependencies:
mime-types: 3.0.2
negotiator: 1.0.0
ajv-formats@3.0.1(ajv@8.20.0):
optionalDependencies:
ajv: 8.20.0
ajv@8.20.0:
dependencies:
fast-deep-equal: 3.1.3
fast-uri: 3.1.3
json-schema-traverse: 1.0.0
require-from-string: 2.0.2
body-parser@2.3.0:
dependencies:
bytes: 3.1.2
content-type: 2.0.0
debug: 4.4.3
http-errors: 2.0.1
iconv-lite: 0.7.2
on-finished: 2.4.1
qs: 6.15.3
raw-body: 3.0.2
type-is: 2.1.0
transitivePeerDependencies:
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bytes@3.1.2: {}
call-bind-apply-helpers@1.0.2:
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function-bind: 1.1.2
call-bound@1.0.4:
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call-bind-apply-helpers: 1.0.2
get-intrinsic: 1.3.0
content-disposition@1.1.0: {}
content-type@1.0.5: {}
content-type@2.0.0: {}
cookie-signature@1.2.2: {}
cookie@0.7.2: {}
cors@2.8.6:
dependencies:
object-assign: 4.1.1
vary: 1.1.2
cross-spawn@7.0.6:
dependencies:
path-key: 3.1.1
shebang-command: 2.0.0
which: 2.0.2
debug@4.4.3:
dependencies:
ms: 2.1.3
depd@2.0.0: {}
dunder-proto@1.0.1:
dependencies:
call-bind-apply-helpers: 1.0.2
es-errors: 1.3.0
gopd: 1.2.0
ee-first@1.1.1: {}
encodeurl@2.0.0: {}
es-define-property@1.0.1: {}
es-errors@1.3.0: {}
es-object-atoms@1.1.2:
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es-errors: 1.3.0
escape-html@1.0.3: {}
etag@1.8.1: {}
eventsource-parser@3.1.0: {}
eventsource@3.0.7:
dependencies:
eventsource-parser: 3.1.0
express-rate-limit@8.5.2(express@5.2.1):
dependencies:
express: 5.2.1
ip-address: 10.2.0
express@5.2.1:
dependencies:
accepts: 2.0.0
body-parser: 2.3.0
content-disposition: 1.1.0
content-type: 1.0.5
cookie: 0.7.2
cookie-signature: 1.2.2
debug: 4.4.3
depd: 2.0.0
encodeurl: 2.0.0
escape-html: 1.0.3
etag: 1.8.1
finalhandler: 2.1.1
fresh: 2.0.0
http-errors: 2.0.1
merge-descriptors: 2.0.0
mime-types: 3.0.2
on-finished: 2.4.1
once: 1.4.0
parseurl: 1.3.3
proxy-addr: 2.0.7
qs: 6.15.3
range-parser: 1.3.0
router: 2.2.0
send: 1.2.1
serve-static: 2.2.1
statuses: 2.0.2
type-is: 2.1.0
vary: 1.1.2
transitivePeerDependencies:
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fast-deep-equal@3.1.3: {}
fast-uri@3.1.3: {}
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debug: 4.4.3
encodeurl: 2.0.0
escape-html: 1.0.3
on-finished: 2.4.1
parseurl: 1.3.3
statuses: 2.0.2
transitivePeerDependencies:
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forwarded@0.2.0: {}
fresh@2.0.0: {}
function-bind@1.1.2: {}
get-intrinsic@1.3.0:
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call-bind-apply-helpers: 1.0.2
es-define-property: 1.0.1
es-errors: 1.3.0
es-object-atoms: 1.1.2
function-bind: 1.1.2
get-proto: 1.0.1
gopd: 1.2.0
has-symbols: 1.1.0
hasown: 2.0.4
math-intrinsics: 1.1.0
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es-object-atoms: 1.1.2
gopd@1.2.0: {}
has-symbols@1.1.0: {}
hasown@2.0.4:
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function-bind: 1.1.2
hono@4.12.27: {}
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depd: 2.0.0
inherits: 2.0.4
setprototypeof: 1.2.0
statuses: 2.0.2
toidentifier: 1.0.1
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inherits@2.0.4: {}
ip-address@10.2.0: {}
ipaddr.js@1.9.1: {}
is-promise@4.0.0: {}
isexe@2.0.0: {}
jose@6.2.3: {}
json-schema-traverse@1.0.0: {}
json-schema-typed@8.0.2: {}
math-intrinsics@1.1.0: {}
media-typer@1.1.0: {}
merge-descriptors@2.0.0: {}
mime-db@1.54.0: {}
mime-types@3.0.2:
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ms@2.1.3: {}
negotiator@1.0.0: {}
object-assign@4.1.1: {}
object-inspect@1.13.4: {}
on-finished@2.4.1:
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path-key@3.1.1: {}
path-to-regexp@8.4.2: {}
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http-errors: 2.0.1
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depd: 2.0.0
is-promise: 4.0.0
parseurl: 1.3.3
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ms: 2.1.3
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escape-html: 1.0.3
parseurl: 1.3.3
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es-errors: 1.3.0
get-intrinsic: 1.3.0
object-inspect: 1.13.4
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media-typer: 1.1.0
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which@2.0.2:
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zod@3.25.76: {}

View File

@@ -0,0 +1,165 @@
import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
import { z } from "zod";
const DEFAULT_BRIDGE_URL = "http://127.0.0.1:17777";
const DEFAULT_TIMEOUT_MS = 30000;
const LONG_TIMEOUT_MS = 120000;
const bridgeUrl = (process.env.UNITY_MCP_BRIDGE_URL || DEFAULT_BRIDGE_URL).replace(/\/+$/, "");
const server = new McpServer({
name: "crystalbattle-unity",
version: "0.1.0"
});
server.registerTool(
"unity_health",
{
title: "Unity health",
description: "Check whether the CrystalBattle Unity Editor bridge is online.",
inputSchema: {}
},
async () => textResult(await getHealth())
);
server.registerTool(
"unity_refresh_assets",
{
title: "Refresh Unity assets",
description: "Run AssetDatabase.Refresh in the Unity Editor.",
inputSchema: {}
},
async () => textResult(await callUnity("refresh_assets", {}, DEFAULT_TIMEOUT_MS))
);
server.registerTool(
"unity_execute_menu_item",
{
title: "Execute Unity menu item",
description: "Execute a whitelisted Unity Editor menu item.",
inputSchema: {
menuItem: z.string().min(1).describe("Whitelisted Unity menu item path, for example Assets/Refresh.")
}
},
async ({ menuItem }) => textResult(await callUnity("execute_menu_item", { menuItem }, DEFAULT_TIMEOUT_MS))
);
server.registerTool(
"unity_get_console_logs",
{
title: "Get Unity console logs",
description: "Return recent logs captured by the Unity Editor bridge.",
inputSchema: {
limit: z.number().int().min(1).max(200).optional().describe("Maximum number of log entries to return.")
}
},
async ({ limit = 50 }) => textResult(await callUnity("get_console_logs", { limit }, DEFAULT_TIMEOUT_MS))
);
server.registerTool(
"unity_generate_ui_prefab",
{
title: "Generate UI prefab",
description: "Generate a Unity UI prefab from a JSON layout file.",
inputSchema: {
jsonPath: z.string().min(1).describe("JSON layout path. Absolute paths and Unity-project-relative paths are supported."),
prefabPath: z.string().min(1).optional().describe("Optional Unity asset path for the generated prefab.")
}
},
async ({ jsonPath, prefabPath }) =>
textResult(await callUnity("generate_ui_prefab", { jsonPath, prefabPath }, LONG_TIMEOUT_MS))
);
server.registerTool(
"unity_export_prefab_to_json",
{
title: "Export prefab to JSON",
description: "Export a Unity UI prefab to a JSON layout file.",
inputSchema: {
prefabPath: z.string().min(1).describe("Unity asset path of the prefab to export."),
jsonPath: z.string().min(1).optional().describe("Optional output JSON path.")
}
},
async ({ prefabPath, jsonPath }) =>
textResult(await callUnity("export_prefab_to_json", { prefabPath, jsonPath }, LONG_TIMEOUT_MS))
);
async function getHealth() {
const response = await request(`${bridgeUrl}/health`, {
method: "GET",
timeoutMs: DEFAULT_TIMEOUT_MS
});
return response;
}
async function callUnity(command, args, timeoutMs) {
return request(`${bridgeUrl}/command`, {
method: "POST",
timeoutMs,
body: {
id: `${command}-${Date.now()}`,
command,
args: stripUndefined(args)
}
});
}
async function request(url, options) {
const controller = new AbortController();
const timeout = setTimeout(() => controller.abort(), options.timeoutMs);
try {
const response = await fetch(url, {
method: options.method,
signal: controller.signal,
headers: options.body ? { "content-type": "application/json" } : undefined,
body: options.body ? JSON.stringify(options.body) : undefined
});
const text = await response.text();
let payload;
try {
payload = text ? JSON.parse(text) : {};
} catch {
payload = { ok: false, message: text || "Unity bridge returned a non-JSON response." };
}
if (!response.ok && payload.ok !== false) {
payload.ok = false;
payload.message = payload.message || `Unity bridge returned HTTP ${response.status}.`;
}
return payload;
} catch (error) {
const reason = error.name === "AbortError"
? `Timed out after ${options.timeoutMs} ms.`
: error.message;
return {
ok: false,
message: `Unity Editor bridge is not reachable at ${bridgeUrl}. ${reason}`,
data: {},
logs: []
};
} finally {
clearTimeout(timeout);
}
}
function stripUndefined(value) {
return Object.fromEntries(Object.entries(value).filter(([, item]) => item !== undefined));
}
function textResult(payload) {
return {
content: [
{
type: "text",
text: JSON.stringify(payload, null, 2)
}
]
};
}
const transport = new StdioServerTransport();
await server.connect(transport);