Favicon of castella

castella Skill

AI Agent SkillCode & Developer ToolsPythonOpen source

castella is a Python AI agent skill for Cursor. Castella is a cross-platform pure Python UI framework

How to use castella Skill

Install or run

uv sync --extra agent   # A2A + A2UI support

Compatible clients

Cursor

What is castella Skill?

castella is a Python AI agent skill for Cursor. Castella is a cross-platform pure Python UI framework This profile combines repository metadata with install, compatibility, and usage signals so developers can quickly decide whether it fits their agent workflow before opening the source repository.

Trust signal
70/100
Maintenance signal
80/100
Adoption signal
40/100

Automated repository signals based on public metadata such as recency, license, installation evidence, and adoption. These are not a security audit or endorsement.

Key capabilities

  • Reusable instructions support
  • Includes SKILL.md support
  • Shell commands support
  • Browser use support
  • Presentation work support
  • Document generation support
  • Google provider support

Technical details

CursorSSE
  • Built for Python
  • Built for Node.js
  • Built for Rust
  • Works with Cursor
  • Uses SSE transport
  • API key required
  • Database access
  • Network access

Requirements and access

PythonNode.jsRustMIT licenseAPI key requiredAPI key requiredDatabase accessNetwork access

Security and permissions

Review permissions before connecting any MCP server to an agent. Pay special attention to whether it can read local files, write data, call external services, or perform destructive actions.

Write actionsDatabase accessNetwork accessCredentials requiredCan write or update dataAPI key required authenticationHosted or remote

When to use castella Skill

  • Use it for reusing agent instructions, scripts, and references.
  • Use it for agent skills workflows.
  • Use it for coding workflows.
  • Use it for data workflows.
  • Use it for cursor users.

Built with

PythonNode.jsRustCursorSSE

Explore related resources

Frequently asked questions

What is castella?

castella is a Python AI agent skill for Cursor. Castella is a cross-platform pure Python UI framework

Who is castella best for?

castella is best for reusing agent instructions, scripts, and references, agent skills workflows, coding workflows, data workflows, cursor users.

How do I install castella?

Check the castella GitHub repository for installation instructions.

Is castella actively maintained?

castella may need a closer maintenance check before production use.

Share:

Similar to castella