chore: import upstream snapshot with attribution
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wehub-resource-sync
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using System;
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using System.Collections.Generic;
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using System.IO;
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using MCPForUnity.Editor.Helpers;
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using MCPForUnity.Editor.Models;
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using Newtonsoft.Json;
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using Newtonsoft.Json.Linq;
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namespace MCPForUnity.Editor.Clients.Configurators
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{
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/// <summary>
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/// Configurator for OpenCode (opencode.ai) - a Go-based terminal AI coding assistant.
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/// OpenCode uses ~/.config/opencode/opencode.json with a custom "mcp" format.
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/// </summary>
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public class OpenCodeConfigurator : McpClientConfiguratorBase
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{
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private const string ServerName = "unityMCP";
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private const string SchemaUrl = "https://opencode.ai/config.json";
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private const string RemoteType = "remote";
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private const string LocalType = "local";
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public OpenCodeConfigurator() : base(new McpClient
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{
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name = "OpenCode",
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windowsConfigPath = BuildConfigPath(),
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macConfigPath = BuildConfigPath(),
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linuxConfigPath = BuildConfigPath()
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})
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{ }
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private static string BuildConfigPath()
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{
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string xdgConfigHome = Environment.GetEnvironmentVariable("XDG_CONFIG_HOME");
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string configBase = !string.IsNullOrEmpty(xdgConfigHome)
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? xdgConfigHome
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: Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), ".config");
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return Path.Combine(configBase, "opencode", "opencode.json");
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}
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public override string GetConfigPath() => CurrentOsPath();
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/// <summary>
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/// Attempts to load and parse the config file.
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/// Returns null if file doesn't exist or cannot be read.
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/// Returns parsed JObject if valid JSON found.
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/// Logs warning if file exists but contains malformed JSON.
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/// </summary>
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private JObject TryLoadConfig(string path)
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{
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if (!File.Exists(path))
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return null;
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string content;
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try
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{
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content = File.ReadAllText(path);
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}
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catch (Exception ex)
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{
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UnityEngine.Debug.LogWarning($"[OpenCodeConfigurator] Failed to read config file {path}: {ex.Message}");
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return null;
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}
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try
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{
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return JsonConvert.DeserializeObject<JObject>(content) ?? new JObject();
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}
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catch (JsonException ex)
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{
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// Malformed JSON - log warning and return null.
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// When Configure() receives null, it will do: TryLoadConfig(path) ?? new JObject()
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// This creates a fresh empty JObject, which replaces the entire file with only the unityMCP section.
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// Existing config sections are lost. To preserve sections, a different recovery strategy
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// (e.g., line-by-line parsing, JSON repair, or manual user intervention) would be needed.
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UnityEngine.Debug.LogWarning($"[OpenCodeConfigurator] Malformed JSON in {path}: {ex.Message}");
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return null;
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}
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}
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public override McpStatus CheckStatus(bool attemptAutoRewrite = true)
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{
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try
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{
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string path = GetConfigPath();
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var config = TryLoadConfig(path);
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if (config == null)
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{
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client.SetStatus(McpStatus.NotConfigured);
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return client.status;
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}
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var unityMcp = config["mcp"]?[ServerName] as JObject;
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if (unityMcp == null)
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{
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client.SetStatus(McpStatus.NotConfigured);
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return client.status;
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}
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if (EntryMatchesCurrentTransport(unityMcp))
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{
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client.SetStatus(McpStatus.Configured);
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}
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else if (attemptAutoRewrite)
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{
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Configure();
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}
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else
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{
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client.SetStatus(McpStatus.IncorrectPath);
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}
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}
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catch (Exception ex)
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{
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client.SetStatus(McpStatus.Error, ex.Message);
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}
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return client.status;
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}
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public override void Configure()
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{
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try
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{
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string path = GetConfigPath();
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McpConfigurationHelper.EnsureConfigDirectoryExists(path);
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// Load existing config or start fresh, preserving all other properties and MCP servers
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var config = TryLoadConfig(path) ?? new JObject();
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// Only add $schema if creating a new file
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if (!File.Exists(path))
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{
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config["$schema"] = SchemaUrl;
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}
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// Preserve existing mcp section and only update our server entry
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var mcpSection = config["mcp"] as JObject ?? new JObject();
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config["mcp"] = mcpSection;
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mcpSection[ServerName] = BuildServerEntry();
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McpConfigurationHelper.WriteAtomicFile(path, JsonConvert.SerializeObject(config, Formatting.Indented));
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client.SetStatus(McpStatus.Configured);
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}
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catch (Exception ex)
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{
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client.SetStatus(McpStatus.Error, ex.Message);
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}
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}
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public override string GetManualSnippet()
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{
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var snippet = new JObject
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{
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["mcp"] = new JObject { [ServerName] = BuildServerEntry() }
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};
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return JsonConvert.SerializeObject(snippet, Formatting.Indented);
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}
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public override IList<string> GetInstallationSteps() => new List<string>
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{
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"Install OpenCode (https://opencode.ai)",
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"Click Configure to add Unity MCP to ~/.config/opencode/opencode.json",
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"Restart OpenCode",
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"The Unity MCP server should be detected automatically"
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};
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private static JObject BuildServerEntry()
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{
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if (HttpEndpointUtility.GetCurrentServerTransport() == ConfiguredTransport.Stdio)
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{
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var (uvxPath, _, packageName) = AssetPathUtility.GetUvxCommandParts();
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if (string.IsNullOrWhiteSpace(uvxPath))
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{
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throw new InvalidOperationException("uvx not found. Install uv/uvx or set the override in Advanced Settings.");
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}
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var command = new JArray { uvxPath };
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foreach (string value in AssetPathUtility.GetUvxDevFlagsList())
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{
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command.Add(value);
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}
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foreach (string value in AssetPathUtility.GetBetaServerFromArgsList())
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{
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command.Add(value);
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}
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command.Add(packageName);
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command.Add("--transport");
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command.Add("stdio");
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return new JObject
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{
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["type"] = LocalType,
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["command"] = command,
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["enabled"] = true
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};
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}
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return new JObject
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{
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["type"] = RemoteType,
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["url"] = HttpEndpointUtility.GetMcpRpcUrl(),
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["enabled"] = true
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};
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}
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private bool EntryMatchesCurrentTransport(JObject entry)
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{
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string entryType = entry["type"]?.ToString();
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ConfiguredTransport expected = HttpEndpointUtility.GetCurrentServerTransport();
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if (expected == ConfiguredTransport.Stdio)
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{
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return string.Equals(entryType, LocalType, StringComparison.OrdinalIgnoreCase)
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&& entry["command"] is JArray;
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}
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return string.Equals(entryType, RemoteType, StringComparison.OrdinalIgnoreCase)
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&& UrlsEqual(entry["url"]?.ToString(), HttpEndpointUtility.GetMcpRpcUrl());
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}
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}
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}
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