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Agent Skills Guide

agent-sdk-development

published 2026/01/23

Central authority for Claude Agent SDK (TypeScript and Python SDKs). Covers SDK installation, authentication (Anthropic key, Bedrock, Vertex), sessions and resumption, forking sessions, streaming vs single mode, custom tools, permissions (allowedTools, disallowedTools, permissionMode), MCP integration, system prompts (CLAUDE.md, appendSystemPrompt, outputStyle), cost tracking, todo tracking, structured outputs, hosting patterns, plugins, and SDK branding guidelines. Assists with building custom agents, configuring SDK options, and troubleshooting SDK issues. Delegates 100% to docs-management skill for official documentation.

📦 Install Skill

Command line install

Install directly with the `skills` CLI.

npx skills add melodic-software/claude-code-plugins/plugins/claude-ecosystem/skills/agent-sdk-development

Local download

Download only this skill directory.

Download agent-sdk-development only
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