Circulara Core MCP Server: Install & Setup

Install Circulara Core in Claude Code

Claude Code

claude mcp add circulara-core -e CIRCULARA_BACKEND_URL=... -e CIRCULARA_TENANT_ID=... -e CIRCULARA_TOKEN=... -e CIRCULARA_SEAT_ID=... -e CIRCULARA_USER_ID=... -- npx -y @circulara/plugin

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "circulara-core": {
      "command": "npx",
      "args": [
        "-y",
        "@circulara/plugin"
      ],
      "env": {
        "CIRCULARA_BACKEND_URL": "...",
        "CIRCULARA_TENANT_ID": "...",
        "CIRCULARA_TOKEN": "...",
        "CIRCULARA_SEAT_ID": "...",
        "CIRCULARA_USER_ID": "..."
      }
    }
  }
}

Replace each ... with your own value.

Frequently asked questions

What does the Circulara Core MCP server do?

Circulara Observe MCP plugin - meters your AI agents' token spend and carbon, free tier.

Is the Circulara Core MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does Circulara Core run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Circulara Core to Claude Code?

Run: claude mcp add circulara-core -e CIRCULARA_BACKEND_URL=... -e CIRCULARA_TENANT_ID=... -e CIRCULARA_TOKEN=... -e CIRCULARA_SEAT_ID=... -e CIRCULARA_USER_ID=... -- npx -y @circulara/plugin

More ai agents & coding agents MCP servers

View all

Clarx Cloud

Gernika-Labs/clarx-cloud

Score agent manifests, generate CI workflows, and pull Clarx scan findings into your IDE.

LocalFree

Chinese Text Tools

0129

Cail726/chinese-text-tools

Claude Code 中文写作四合一工具箱：文本分析（字数/段落/阅读时间）、结构化大纲生成（论文/小说/商业计划书）、GB/T 7714 参考文献格式化、中文字频统计。纯本地运行。

LocalFree

Claude Code Organizer

mcpware/claude-code-organizer

Organize Claude Code memories, skills, MCP servers, commands, agents, rules via drag-and-drop.

LocalFree

ChiefLab

bdentech/chiefmo-agent

Open execution contract for agents doing business work. 6 operators, one MIT-licensed spec.

Local + RemoteAccount needed

Claude Context Sync

0317

ybin4548/claude-context-sync

Share context, detect conflicts, and message across parallel Claude Code sessions

LocalFree

chargehand

Egoushka/chargehand

Runs coding-agent workers on a codebase question; every claim in the answer carries evidence.

LocalFree