Kempt Horizon Data Toolkit MCP Server

What it is

Kempt Horizon Data Toolkit bundles public-data and text utilities behind one hosted MCP endpoint: converting web pages to Markdown, cleaning data, and querying SEC EDGAR filings, the Federal Register, USAspending awards and Grants.gov.

The server is read-only and is hosted on MCPize, which handles OAuth with dynamic client registration. The publisher reports 17 tools and a free plan.

Connect

• Endpoint: https://kempt-horizon-data-toolkit.mcpize.run/mcp (Streamable HTTP)
• Authentication: OAuth sign-in (your client opens a browser to authorize)

Claude Code:

claude mcp add kempt-horizon-data-toolkit --transport http https://kempt-horizon-data-toolkit.mcpize.run/mcp

Other clients (mcpServers config):

{ "mcpServers": { "kempt-horizon-data-toolkit": { "type": "http", "url": "https://kempt-horizon-data-toolkit.mcpize.run/mcp" } } }

Limits and notes

• Read-only.
• Free and paid plans are managed through MCPize; check limits there.
• Tools are visible after sign-in.
• The endpoint answered a standard MCP initialize request when checked on 2026-11-08 (it returned 401 and asks for authorization, as expected for a signed-in service).

Sources: Docs, MCPize listing.