Cometix Indexer▌
by CometixAI
Cometix Indexer — local code indexer for fast semantic code search. Index workspaces and run incremental searches with a
A local indexing and retrieval service that enables semantic code search by wrapping Cursor's backend RepositoryService. It provides tools for indexing local workspaces and performing incremental semantic searches with automatic synchronization.
Both formats append explainx.ai attribution and the canonical URL for this MCP server listing.
best for
- / Developers wanting semantic code search in large codebases
- / Code navigation and discovery across projects
- / Understanding code functionality through natural language queries
capabilities
- / Index local workspaces for semantic search
- / Perform semantic code searches with natural language queries
- / Filter search results with glob patterns
- / Automatically sync changes for fresh search results
- / Return exact file locations with line numbers
what it does
Provides semantic code search capabilities by indexing local workspaces through Cursor's backend RepositoryService. Enables fast semantic searches across your codebase with automatic synchronization.
about
Cometix Indexer is an official MCP server published by CometixAI that provides AI assistants with tools and capabilities via the Model Context Protocol. Cometix Indexer — local code indexer for fast semantic code search. Index workspaces and run incremental searches with a It is categorized under developer tools.
how to install
You can install Cometix Indexer in your AI client of choice. Use the install panel on this page to get one-click setup for Cursor, Claude Desktop, VS Code, and other MCP-compatible clients. This server runs locally on your machine via the stdio transport.
license
MIT
Cometix Indexer is released under the MIT license. This is a permissive open-source license, meaning you can freely use, modify, and distribute the software.
readme
Cometix Indexer(MCP 服务器)
语义代码搜索的本地索引与检索服务。该项目实现了一个基于 Model Context Protocol(MCP)的服务端,封装了对 Cursor 后端 RepositoryService 的建库、同步与搜索流程,通过两类 MCP 工具对外提供能力:项目索引(index_project)与语义搜索(codebase_search)。
TODOs
- Cursor Indexing(ok)
- Warp Embedding
- Trae Indexing
- Augment Indexing
- Github Indexing(来源Copilot Indexing)
功能概述
- 索引:扫描本地工作区、生成文件清单、分批上传至 Cursor 服务端并完成建库标记。
- 增量同步:监听文件变更,按需进行轻量同步,保证搜索前的索引新鲜度。
- 语义搜索:调用远端检索接口并自动解密返回的加密路径,直观展示命中。
- 运行形态:作为 MCP 服务器通过 stdio 运行并响应工具调用。
MCP
Claude Code
npx格式
{
"mcpServers": {
"cometix-indexer": {
"command": "npx",
"args": [
"-y",
"--package=git+https://github.com/CometixAI/Cometix-Indexer.git",
"cometix-indexer",
"start"
],
"env": {
"CURSOR_AUTH_TOKEN": "",
"CURSOR_BASE_URL": "https://api2.cursor.sh"
}
}
}
}
npm格式(Local)
{
"mcpServers": {
"cometix-indexer": {
"command": "npm",
"args": [
"--prefix",
"<path>",
"run",
"start"
],
"env": {
"CURSOR_AUTH_TOKEN": "",
"CURSOR_BASE_URL": "https://api2.cursor.sh"
}
}
}
}
MCP 工具
-
index_project- 入参:
{ workspacePath: string; verbose?: boolean } - 行为:初始化/刷新索引,按批全量上传并计划自动同步;当
verbose=true时,额外返回本轮上传的相对路径文件列表。 - 返回:
{ codebaseId, uploaded, batches, nextSyncAt }
- 入参:
-
codebase_search- 入参:
{ query: string; paths_include_glob?: string; paths_exclude_glob?: string; max_results?: number } - 行为:在“唯一一个”已索引工作区内进行搜索;支持包含/排除 glob 过滤(基于工作区相对路径),并在搜索前进行按需增量同步。
- 返回:
{ total, hits: Array<{ path, score, startLine, endLine }> }
- 入参:
示例(概念性):
{
"name": "index_project",
"arguments": { "workspacePath": "E:/project" }
}
{
"name": "codebase_search",
"arguments": { "query": "What is the xxx paper", "paths_include_glob": "src/**/*.rs", "paths_exclude_glob": "**/tests/**", "max_results": 50 }
}
目录结构(核心)
src/index.ts:进程入口。解析 CLI/环境变量,创建 MCPServer并接入 stdio 传输。src/server.ts:注册 MCP 工具:index_project与codebase_search。src/services/repositoryIndexer.ts:索引与同步核心逻辑(初次建库、分批上传、增量同步、定时器)。src/services/codeSearcher.ts:搜索逻辑(预同步、远端搜索、结果解密与规整)。src/services/fileWatcher.ts:文件变更监听,标记pendingChanges。src/services/stateManager.ts:工作区状态持久化(state.json)。src/crypto/pathEncryption.ts:路径分段加解密方案与 Windows/Posix 互转。src/client/proto.ts:加载proto/repository_service.proto并以 protobuf 编解码发送 HTTP 请求。src/client/cursorApi.ts:封装调用的具体 RepositoryService 接口。src/utils/env.ts:配置解析、默认参数与请求头。src/utils/fs.ts:忽略规则、文件遍历与可嵌入文件清单读取。src/utils/semaphore.ts:并发控制与带重试的信号量。
工作原理
- 初次索引
- 扫描工作区(忽略
node_modules/、.git/、dist/等)并生成默认清单embeddable_files.txt(每个工作区独立存放)。 - 基于
@anysphere/file-service的MerkleClient构建目录 Merkle 树,获取rootHash与simhash。 - 生成路径加密密钥(
pathKey),并以V1MasterKeyedEncryptionScheme对相对路径逐段加密。 - 将文件按批(
INITIAL_UPLOAD_MAX_FILES)执行完整流程:FastRepoInitHandshakeV2握手(返回codebaseId)。- 上传本批文件(
FastUpdateFileV2)。 EnsureIndexCreated与FastRepoSyncComplete标记索引完成。
- 将
codebaseId、pathKey、orthogonalTransformSeed等持久化到工作区状态state.json。
- 增量同步
chokidar监听文件变更,只标记pendingChanges = true(轻量)。- 搜索或定时器触发时,如存在变更:
- 使用
SyncMerkleSubtreeV2对目录节点进行比对,定位不匹配的子树与文件。 - 对变更文件执行同批上传与
EnsureIndexCreated/FastRepoSyncComplete。 - 清理
pendingChanges标记并持久化。
- 使用
- 语义搜索
- 搜索前先触发一次按需增量同步以保证结果新鲜。
- 调用
SearchRepositoryV2并对返回的加密路径用本地pathKey解密为 Posix 相对路径,输出{ path, score, startLine, endLine }。
运行要求
- Node.js >= 18
proto/repository_service.proto必须存在(仓库已附带)。
启动(npx)
npx -y --package=git+https://github.com/CometixAI/Cometix-Indexer.git cometix-indexer -- --auth-token "$CURSOR_AUTH_TOKEN" --base-url https://api2.cursor.sh
启动(npm scripts)
# 安装依赖并构建
npm install
npm run build
# 方式一:通过环境变量(PowerShell 示例)
$env:CURSOR_AUTH_TOKEN="你的Token"; npm run start
# 方式二:通过参数传递(-- 之后的参数会透传给脚本)
npm run start -- --auth-token 你的Token --base-url https://api2.cursor.sh --log-level info
# 开发模式(监听编译;运行需要另开终端执行 start)
npm run dev
# 另开一个终端
npm run start -- --auth-token 你的Token
可用环境变量:
CURSOR_AUTH_TOKEN(必需)CURSOR_BASE_URL(默认https://api2.cursor.sh)LOG_LEVEL(debug|info|warning|error,默认info)
环境变量与默认值(可调优)
SYNC_CONCURRENCY(默认 4)SYNC_MAX_NODES(默认 2000)SYNC_MAX_ITERATIONS(默认 10000)SYNC_LIST_LIMIT(默认 1000)FILE_SIZE_LIMIT_BYTES(默认 2MB,超出将跳过)INITIAL_UPLOAD_MAX_FILES(默认 10,初次索引分批大小)PROTO_TIMEOUT_MS(默认 30000)PROTO_SEARCH_TIMEOUT_MS(默认 60000)AUTO_SYNC_INTERVAL_MS(默认 5 分钟)
开发安装与构建
npm install
npm run build
状态与数据持久化
- 工作区专属数据目录:
%USERPROFILE%/.cometix/cursor-indexer/<safeName>-<hash>/state.json:保存codebaseId、pathKey、orthogonalTransformSeed等。embeddable_files.txt:首次索引生成的可嵌入文件列表,可手动编辑以精确控制索引范围。
路径加密与兼容性
- 采用分段对称加密(
aes-256-ctr)并在 Windows 相对路径(以./或.\起始)层面进行,避免泄露真实目录结构。 - 搜索结果会自动尝试使用本地
pathKey解密为 Posix 相对路径,失败时回退为原始加密串。
忽略与限制
- 默认忽略:
node_modules/、.git/、.cursor/、dist/、build/、coverage/等。 - 超过
FILE_SIZE_LIMIT_BYTES的文件会被跳过。
常见问题
- 报错
repository_service.proto not found:请确认项目根目录存在proto/repository_service.proto。 Missing CURSOR_AUTH_TOKEN:通过--auth-token传参或设置环境变量CURSOR_AUTH_TOKEN。
许可
MIT
FAQ
- What is the Cometix Indexer MCP server?
- Cometix Indexer is a Model Context Protocol (MCP) server profile on explainx.ai. MCP lets AI hosts (e.g. Claude Desktop, Cursor) call tools and resources through a standard interface; this page summarizes categories, install hints, and community ratings.
- How do MCP servers relate to agent skills?
- Skills are reusable instruction packages (often SKILL.md); MCP servers expose live capabilities. Teams frequently combine both—skills for workflows, MCP for APIs and data. See explainx.ai/skills and explainx.ai/mcp-servers for parallel directories.
- How are reviews shown for Cometix Indexer?
- This profile displays 30 aggregated ratings (sample rows for discoverability plus signed-in user reviews). Average score is about 4.6 out of 5—verify behavior in your own environment before production use.
Use Cases▌
Extended AI Capabilities
Add new capabilities to Claude beyond text generation
Example
Access external data sources, execute code, interact with tools and services
Transform Claude from chatbot to action-taking agent
Context Enhancement
Provide Claude with access to relevant context and data
Example
Load project documentation, access knowledge bases, query databases
Get more accurate, context-aware responses
Workflow Automation
Automate multi-step workflows combining AI and external tools
Example
Research → Summarize → Create document → Send notification
Complete complex tasks end-to-end without manual steps
Implementation Guide▌
Prerequisites
- ›Claude Desktop 0.7.0+ or Cursor IDE with MCP support
- ›Basic understanding of MCP architecture and capabilities
- ›Access credentials for integrated services (if required)
- ›Willingness to experiment and iterate on configuration
Time Estimate
15-60 minutes depending on server complexity
Installation Steps
- 1.Install MCP server: npm install -g [package-name] or via GitHub
- 2.Add server configuration to ~/.claude/mcp.json
- 3.Provide required credentials and configuration
- 4.Restart Claude Desktop to load new server
- 5.Test basic functionality with simple prompts
- 6.Explore capabilities and experiment with use cases
- 7.Document successful patterns for reuse
Troubleshooting
- ⚠MCP server not loading: Check config syntax, verify installation
- ⚠Connection errors: Check network, firewall, credentials
- ⚠Feature not working: Read server docs, check required parameters
- ⚠Performance issues: Monitor resource usage, check for network latency
- ⚠Conflicts with other servers: Check port assignments, namespace collisions
Best Practices▌
✓ Do
- +Read server documentation thoroughly before setup
- +Start with simple use cases to validate functionality
- +Test in non-production environment first
- +Monitor resource usage and performance
- +Keep servers updated for bug fixes and new features
- +Document configuration for team members
- +Use environment variables for sensitive configuration
✗ Don't
- −Don't grant overly permissive access to MCP servers
- −Don't skip reading security considerations in docs
- −Don't expose sensitive data without proper controls
- −Don't run untrusted MCP servers without code review
- −Don't ignore error messages—investigate root cause
💡 Pro Tips
- ★Combine multiple MCP servers for powerful workflows
- ★Create custom MCP servers for your specific needs
- ★Share successful configurations with team
- ★Use MCP inspector for debugging
- ★Join MCP community for tips and troubleshooting
Technical Details▌
Architecture
Model Context Protocol standardizes how AI hosts (Claude, Cursor) communicate with external tools and data sources through server implementations.
Protocols
- Model Context Protocol (MCP)
- JSON-RPC 2.0
- stdio or HTTP transport
Compatibility
- Claude Desktop
- Cursor IDE
- Custom MCP clients
When to Use This▌
✓ Use When
Use when you need Claude to access external data, execute actions, or integrate with tools. Best for extending AI capabilities beyond conversation.
✗ Avoid When
Avoid when native integrations exist (use official APIs directly), for real-time critical systems, or when security/compliance requires zero external dependencies.
Integration▌
- →Tool composition: Chain multiple MCP tools in workflows
- →Context augmentation: Provide AI with relevant external data
- →Action delegation: Let AI execute tasks on external systems
- →Bidirectional sync: Keep AI context and external systems in sync
Discussion
Product Hunt–style comments (not star reviews)- No comments yet — start the thread.
List & Promote Your MCP Server
Share your MCP server with the developer community
Ratings
4.6★★★★★30 reviews- ★★★★★Shikha Mishra· Dec 28, 2024
According to our notes, Cometix Indexer benefits from clear Model Context Protocol framing — fewer ambiguous “AI plugin” claims.
- ★★★★★Ganesh Mohane· Dec 20, 2024
Strong directory entry: Cometix Indexer surfaces stars and publisher context so we could sanity-check maintenance before adopting.
- ★★★★★Meera Torres· Dec 20, 2024
Cometix Indexer is a well-scoped MCP server in the explainx.ai directory — install snippets and categories matched our Claude Code setup.
- ★★★★★Diego Bhatia· Dec 4, 2024
We wired Cometix Indexer into a staging workspace; the listing’s GitHub and npm pointers saved time versus hunting across READMEs.
- ★★★★★Valentina Rahman· Nov 23, 2024
Cometix Indexer reduced integration guesswork — categories and install configs on the listing matched the upstream repo.
- ★★★★★Sakshi Patil· Nov 11, 2024
Cometix Indexer is among the better-indexed MCP projects we tried; the explainx.ai summary tracks the official description.
- ★★★★★Meera Zhang· Nov 11, 2024
Useful MCP listing: Cometix Indexer is the kind of server we cite when onboarding engineers to host + tool permissions.
- ★★★★★Noah Reddy· Oct 14, 2024
Useful MCP listing: Cometix Indexer is the kind of server we cite when onboarding engineers to host + tool permissions.
- ★★★★★Chaitanya Patil· Oct 2, 2024
We evaluated Cometix Indexer against two servers with overlapping tools; this profile had the clearer scope statement.
- ★★★★★Aarav Farah· Oct 2, 2024
Cometix Indexer reduced integration guesswork — categories and install configs on the listing matched the upstream repo.
showing 1-10 of 30