Agent SDK Development

Q: What is a Claude Code skill and how does the Agent SDK Development skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Agent SDK Development is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Dev Tools category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Dev Tools · Sub-category: tools-misc · Last updated: 2026-05-21

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.

About this skill (catalog notes)

Agent SDK Development includes pricing or quota commentary; at least one code block. At roughly 2,059 words the SKILL.md is on the longer end of the catalog distribution.

Indexed lastmod: 2026-05-21
Catalog position: Dev Tools · tools-misc
Indexed related skills: 10

How Agent SDK Development fits the catalog

Agent SDK Development sits in the Dev Tools category under the tools-misc sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

What this skill does

Agent SDK Development is a community-contributed Claude Code skill in the tools-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/agent-sdk-development/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Agent SDK Development Claude Code skill is built for developers, power users, and teams automating repetitive workflows and improving developer experience. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 117,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/agent-sdk-development
curl -L https://claudskills.com/skills/agent-sdk-development/SKILL.md \
  -o ~/.claude/skills/agent-sdk-development/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/agent-sdk-development/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/agent-sdk-development/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\agent-sdk-development\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Agent SDK Development Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/agent-sdk-development/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Agent SDK Development skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Agent SDK Development skill?

Use Agent SDK Development when your Claude Code task falls under the Dev Tools category — specifically in the tools misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Agent SDK Development" or describe the task and let Claude pick). Browse related skills at /category/tools/.

What is a Claude Code skill and how does the Agent SDK Development skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Agent SDK Development is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Dev Tools category. Learn more at /learn/what-is-a-claude-skill/.

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

ClaudSkills. (2026). Agent SDK Development [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/agent-sdk-development/

BibTeX

@misc{agent-sdk-development-2026,
  author    = {ClaudSkills},
  title     = {Agent SDK Development [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/agent-sdk-development/}
}

Embed this skill

Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →

Badge

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Browse all Dev Tools skills → Top 100 skills

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