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Agent skills give your AI assistant domain-specific instructions for using NorthAxium Data correctly. The current skill is for Claude Desktop. It teaches Claude when to use the NorthAxium Data MCP server, which tools are available, and which lookup patterns prevent bad results.
If you use Claude’s hosted custom connector, install the MCP server first. The hosted connector uses OAuth and does not require a local API key.

MCP Server

Configure the NorthAxium Data MCP server before installing the skill.

Available skills

Install the Claude Desktop skill

Before installing the skill, make sure the MCP server is already connected. The skill adds usage instructions; the MCP server provides the tools.
1

Create the skill folder

Create a folder named northaxium-data-mcp.
2

Create SKILL.md

Create a file at:
Paste the skill content below into that file.
3

Zip the skill folder

Create a ZIP that contains the northaxium-data-mcp folder.
4

Upload and enable the skill

In Claude Desktop, open SettingsCapabilities, upload northaxium-data-mcp.zip, then enable the skill.
5

Test the skill

Ask Claude a question that should use NorthAxium Data:
Claude should use the northaxium-data MCP tools and follow the lookup patterns in the skill.

Claude Desktop skill

Copy this into northaxium-data-mcp/SKILL.md.

Troubleshooting

Claude does not use the skill — Confirm the ZIP contains northaxium-data-mcp/SKILL.md, then enable the skill in SettingsCapabilities. Claude cannot see NorthAxium tools — Configure the MCP server first. The skill gives instructions; the MCP server provides the tools. MCP authentication fails — If you use the hosted connector, disconnect and reconnect NorthAxium Data in Claude’s connector settings, then complete the OAuth sign-in flow. If you use a legacy local stdio setup, confirm that NORTHAXIUM_API_KEY is valid. Results look incomplete — Use the two-step lookup patterns in the skill. Vendor names, grant recipient names, and politician profiles require disambiguation.