What is openhands-sdk?

A Python framework for building AI agents that write software, use tools, and manage ongoing conversations.

It helps developers build coding agents, add file and terminal tools, track tasks, and run agents locally or remotely.

It provides a standard way to configure language models, tools, workspaces, and delegated agent tasks.

openhands-sdk — Skill for Claude Code and Codex by OpenHands

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add OpenHands/extensions --skill openhands-sdk

Clone the repo

git clone --depth 1 https://github.com/OpenHands/extensions

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/openhands/extensions/openhands-sdk/github.svg)](https://agentmods.dev/skills/openhands/extensions/openhands-sdk)

Your own site

<a href="https://agentmods.dev/skills/openhands/extensions/openhands-sdk"><img src="https://agentmods.dev/badge/skills/openhands/extensions/openhands-sdk/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/openhands/extensions/openhands-sdk"><img src="https://agentmods.dev/badge/skills/openhands/extensions/openhands-sdk.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 61 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 6,398 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector pass 7 Sept 2026

How audits are shown

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00061	$0.06398
Opus 5.5	$0.00024	$0.02559
Sonnet 5.5	$0.00012	$0.01280
Haiku 4.5	$0.00006	$0.00640

Measured 12d ago against content hash 102b75f8b553, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

openhands-sdk scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/openhands-sdk/SKILL.md · 250 lines

How it starts

The opening of the file, as written. The whole thing — 250 lines — stays where its author put it; the contents beside it link to each section on GitHub.

OpenHands Software Agent SDK

All SDK documentation lives at https://docs.openhands.dev/sdk.

For the full topic index, fetch https://docs.openhands.dev/llms.txt and read the "OpenHands Software Agent SDK" section.

Quick reference

Install: pip install openhands-sdk openhands-tools

import os

from openhands.sdk import LLM, Agent, Conversation, Tool
from openhands.tools.file_editor import FileEditorTool
from openhands.tools.task_tracker import TaskTrackerTool
from openhands.tools.terminal import TerminalTool


llm = LLM(
    model=os.getenv("LLM_MODEL", "gpt-5.5"),
    api_key=os.getenv("LLM_API_KEY"),
    base_url=os.getenv("LLM_BASE_URL", None),
)

agent = Agent(
    llm=llm,
    tools=[
        Tool(name=TerminalTool.name),
        Tool(name=FileEditorTool.name),
        Tool(name=TaskTrackerTool.name),
    ],
)

cwd = os.getcwd()
conversation = Conversation(agent=agent, workspace=cwd)

conversation.send_message("Write 3 facts about the current project into FACTS.txt.")
conversation.run()
print("All done!")

Core classes (`openhands.sdk`)

Class	Purpose
`Agent`	Reasoning-action loop
`Condenser`	Conversation history compression system
`Conversation`	Conversation orchestration system
`Event`	Typed event framework
`LLM`	Provider-agnostic language model interface
`SecurityAnalyzer`	Action security analysis and validation
`Skill`	Reusable prompt system
`Tool / ToolDefinition`	Action-observation tool framework
`Workspace`	Execution environment abstraction

Read the full file on GitHub · 250 lines

Files

What ships with it

5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

12d ago Changed · +1 lines 102b75f8b553
22d ago Changed · +1 lines 033b9e64ec76
25d ago Changed · +2 lines 03180fe4b5d8
1mo ago Changed · +2 lines 665cddf9f069
1mo ago First seen · 244 lines · 61 tokens per session scan A 2dd700f55e9a

Subscribe to this mod's changes

openhands-sdk is a skill published in the GitHub repository OpenHands/extensions (167 stars, last pushed today), licensed MIT. It adds 61 tokens to every session and 6,398 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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