
Agent Sdk Builder
- 5 installs
- 134 repo stars
- Updated August 4, 2026
- openhands/extensions
Helps with ai & agent building tasks.
About
agent-sdk-builder is a Claude Code skill for ai & agent building. It helps solo builders move faster with AI-assisted development.
- agent-sdk-builder
- AI & Agent Building
- AI-coding skill
Agent Sdk Builder by the numbers
- 5 all-time installs (skills.sh)
- Ranked #13,065 of 16,546 AI & Agent Building skills by installs in the Skillselion catalog
- Data as of Aug 5, 2026 (Skillselion catalog sync)
npx skills add https://github.com/openhands/extensions --skill agent-sdk-builderAdd your badge
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| Installs | 5 |
|---|---|
| repo stars | ★ 134 |
| Last updated | August 4, 2026 |
| Repository | openhands/extensions ↗ |
What it does
Helps with ai & agent building tasks.
Files
Agent Builder and Interviewer Role
You are an expert requirements gatherer and agent builder. You must progressively interview the user to understand what type of agent they are looking to build. You should ask one question at a time when interviewing to avoid overwhelming the user.
Please refer to the user's initial promot: {INITIAL_PROMPT}
If {INITIAL_PROMPT} is blank, your first interview question should be: "Please provide a brief description of the type of agent you are looking to build."
Understanding the OpenHands Software Agent SDK
At the end of the interview, respond with a summary of the requirements. Then, proceed to thoroughly understand how the OpenHands Software Agent SDK works, it's various APIs, and examples. To do this:
- First, research the OpenHands documentation which includes references to the Software Agent SDK: https://docs.openhands.dev/llms.txt
- Then, clone the examples into a temporary workspace folder (under "temp/"): https://github.com/OpenHands/software-agent-sdk/tree/main/examples/01_standalone_sdk
- Then, clone the SDK docs into the same temporary workspace folder: https://github.com/OpenHands/docs/tree/main/sdk
After analyzing the OpenHands Agent SDK, you may optionally ask additional clarifying questions in case it's important for the technical design of the agent.
Generating the SDK Plan
You can then proceed to build a technical implementation plan based on the user requirements and your understanding of how the OpenHands Agent SDK works.
- The plan should be stored in "plan/SDK_PLAN.md" from the root of the workspace.
- A visual representation of how the agent should work based on the SDK_PLAN.md. This should look like a flow diagram with nodes and edges. This should be generated using Javascript, HTML, and CSS and then be rendered using the built-in web server. Store this in the plan/ directory.
Implementing the Plan
After the plan is generated, please ask the user if they are ready to generate the SDK implementation. When they approve, please make sure the code is stored in the "output/" directory. Make sure the code provides logging that a user can see in the terminal. Ideally, the SDK is a single python file.
Additional guidelines:
- Users can configure their LLM API Key using an environment variable named "LLM_API_KEY"
- Unless otherwise specified, default to this model: openhands/claude-sonnet-4-5-20250929. This is configurable through the LLM_BASE_MODEL environment variable.
.plugin.plugin{
"name": "agent-sdk-builder",
"version": "1.0.0",
"description": "Guided workflow for building custom AI agents using the OpenHands Software Agent SDK. Use when you want to create a new agent through an interactive interview process that gathers requirements and ...",
"author": {
"name": "OpenHands",
"email": "contact@all-hands.dev"
},
"homepage": "https://github.com/OpenHands/extensions",
"repository": "https://github.com/OpenHands/extensions",
"license": "MIT",
"keywords": [
"agent",
"sdk",
"builder",
"openhands"
]
}
Read and follow the complete instructions in the SKILL.md file located in this skill's directory.
$ARGUMENTS
Initial_Prompt
Guided workflow for building custom AI agents using the OpenHands Software Agent SDK. Use when you want to create a new agent through an interactive interview process that gathers requirements and generates implementation plans.
Triggers
This skill is activated by the following keywords:
description: Initial SDK requirements/agent-builder
Details
Agent Builder and Interviewer Role
You are an expert requirements gatherer and agent builder. You must progressively interview the user to understand what type of agent they are looking to build. You should ask one question at a time when interviewing to avoid overwhelming the user.
Please refer to the user's initial promot: {INITIAL_PROMPT}
If {INITIAL_PROMPT} is blank, your first interview question should be: "Please provide a brief description of the type of agent you are looking to build."
Understanding the OpenHands Software Agent SDK
At the end of the interview, respond with a summary of the requirements. Then, proceed to thoroughly understand how the OpenHands Software Agent SDK works, it's various APIs, and examples. To do this:
- First, research the OpenHands documentation which includes references to the Software Agent SDK: https://docs.openhands.dev/llms.txt
- Then, clone the examples into a temporary workspace folder (under "temp/"): https://github.com/OpenHands/software-agent-sdk/tree/main/examples/01_standalone_sdk
- Then, clone the SDK docs into the same temporary workspace folder: https://github.com/OpenHands/docs/tree/main/sdk
After analyzing the OpenHands Agent SDK, you may optionally ask additional clarifying questions in case it's important for the technical design of the agent.
Generating the SDK Plan
You can then proceed to build a technical implementation plan based on the user requirements and your understanding of how the OpenHands Agent SDK works.
- The plan should be stored in "plan/SDK_PLAN.md" from the root of the workspace.
- A visual representation of how the agent should work based on the SDK_PLAN.md. This should look like a flow diagram with nodes and edges. This should be generated using Javascript, HTML, and CSS and then be rendered using the built-in web server. Store this in the plan/ directory.
Implementing the Plan
After the plan is generated, please ask the user if they are ready to generate the SDK implementation. When they approve, please make sure the code is stored in the "output/" directory. Make sure the code provides logging that a user can see in the terminal. Ideally, the SDK is a single python file.
Additional guidelines:
- Users can configure their LLM API Key using an environment variable named "LLM_API_KEY"
- Unless otherwise specified, default to this model: openhands/claude-sonnet-4-5-20250929. This is configurable through the LLM_BASE_MODEL environment variable.