Agent Stdlib

Verified Integration

Author: @layer•Category: ServerApplication

GitHub Repository

JSON-RPC 2.0

Protocol Standard

Sub-second

Execution Latency

Active

Operational Status

Client Configuration

— Connect Agent Stdlib to Claude Desktop or Cursor in seconds

{
  "mcpServers": {
    "agent-stdlib": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-agent-stdlib"
      ],
      "env": {}
    }
  }
}

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows).

Architecture & Capabilities

System Overview

Provides essential components and best practices for building, evaluating, and deploying robust AI agents based on Anthropic's engineering insights.

Indexed Date

7/21/2026

License

Open Source

Protocol Layer

stdio / SSE RPC

Frequently Asked Questions

Architecture and operational details for Agent Stdlib

Agent Stdlib includes dedicated skills like 'build-agent-evals' to help you design automated evaluations (e.g., picking graders, choosing pass@k vs pass^k) and 'calibrate-eval-infrastructure' to ensure reliable benchmark scores.

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