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What is the Agent Skill?

The Agent Skill is an Agent Skill that teaches Claude how to effectively discover and use tools through the Danube MCP Server. It provides:
  • Tool discovery patterns - When to use search_tools vs list_services vs get_service_tools
  • Authentication handling - How to recognize and respond to credential errors
  • Workflow guidance - Multi-step patterns for common tasks
  • Troubleshooting - Error handling and recovery strategies
Agent Skills are folders of instructions that Claude loads dynamically to improve performance on specialized tasks. Learn more about Skills

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Download

Download Agent Skill

Download the skill package (ZIP file)

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Installation

1

Download the Skill

Click the download button above to get danube-skill.zip.
2

Open Claude Settings

In Claude.ai, click on your profile icon and select Settings.
3

Navigate to Capabilities

Go to Capabilities in the settings menu.
4

Add the Skill

Click Add and then select Upload Skill.
5

Select the ZIP File

Choose the danube-skill.zip file you downloaded.
6

Confirm Installation

The skill will appear in your Capabilities list once installed.
After installing the skill, Claude will automatically use it when you ask about Danube tools or want to interact with external services.

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What’s Included

The Agent Skill package contains: 
danube/
├── SKILL.md              # Core instructions and tool reference
└── references/
    ├── workflows.md      # Multi-step usage patterns
    └── troubleshooting.md # Error handling guide

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SKILL.md

The main skill file includes:
  • Complete reference for all 30 MCP tools (discovery, execution, spending limits, skills, workflows, sites, agents, ratings)
  • Tool discovery decision flow
  • Authentication error handling patterns (including store_credential for API keys)
  • Best practices for using Danube

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workflows.md

Common multi-step patterns:
  • Find and execute a tool
  • Explore a service’s capabilities
  • Handle authentication errors
  • Multi-service operations
  • Multi-tool orchestration workflows

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troubleshooting.md

Error handling guidance:
  • Authentication errors (auth_required, invalid_grant, API key issues)
  • Parameter errors
  • Connection issues
  • Quick reference for error resolution

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Example Usage

Once the skill is installed, Claude will know how to use Danube effectively. Try prompts like:
Prompt: “What services are available on Danube?”Claude will use list_services to show available integrations.
Prompt: “Send an email to john@example.com about our meeting tomorrow”Claude will discover the Gmail tool, check authentication, and execute the request.

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Skill vs MCP Connection

FeatureMCP ConnectionAgent Skill
Required for toolsYesNo (enhancement)
Tool executionEnables itImproves it
Error handlingBasicGuided recovery
DiscoveryAvailableOptimized patterns
The Agent Skill enhances Claude’s ability to use Danube but does not replace the MCP connection. You still need to set up the MCP Server to actually execute tools.

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Updating the Skill

To update to a newer version:
  1. Download the latest skill from this page
  2. Go to Settings → Capabilities
  3. Remove the existing Agent skill
  4. Upload the new version

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Creating Custom Skills

Want to create your own skills? Check out: