Highlyt MCP

An official MCP server provided by Highlyt that connects AI assistants like Claude and ChatGPT to a user's personal highlight library. It allows agents to search, filter, and read highlights, notes, and linked knowledge graphs across PDFs, EPUBs, web articles, and Kindle books, enabling context-aware answers based on the user's specific reading annotations.

Endpoint and access

Optional OAuth sign-in: public tools work without signing in. Account tools prompt an OAuth sign-in in your client the first time you use one.

Optional OAuth sign-inEndpoint checked 2026-10-26Operated by Highlyt

MCP endpoint (Streamable HTTP)

https://mcp.highlyt.app/mcp

Vendor documentation

What you can do with it

Search highlights across multiple documents by color or keyword
Retrieve linked ideas and knowledge graph connections
Read user notes and semantic color definitions
Generate summaries based on specific annotated concepts

Tools advertised by the last live check:

highlyt_list_documents
highlyt_get_document
highlyt_get_research_brief
highlyt_export_research_brief_markdown
highlyt_list_highlights
highlyt_create_highlight
highlyt_update_highlight
highlyt_delete_highlight
highlyt_list_highlight_links
highlyt_get_highlight_links
highlyt_create_highlight_link
highlyt_update_highlight_link
highlyt_delete_highlight_link
highlyt_get_cross_document_links
highlyt_list_cluster_summaries
highlyt_upsert_cluster_summary
highlyt_delete_cluster_summary
highlyt_get_page_text
highlyt_get_document_images
highlyt_create_text_highlight
highlyt_bulk_create_highlights
highlyt_export_highlights
highlyt_search_highlights
highlyt_search
highlyt_list_research_projects
highlyt_list_references
highlyt_get_reference
highlyt_export_references

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http highlyt-mcp https://mcp.highlyt.app/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add highlyt-mcp --url https://mcp.highlyt.app/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable highlyt-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "highlyt-mcp": {
      "url": "https://mcp.highlyt.app/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "highlyt-mcp": {
      "type": "streamableHttp",
      "url": "https://mcp.highlyt.app/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start highlyt-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "highlyt-mcp": {
      "type": "http",
      "url": "https://mcp.highlyt.app/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http highlyt-mcp https://mcp.highlyt.app/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "highlyt-mcp": {
      "url": "https://mcp.highlyt.app/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "highlyt-mcp": {
      "serverUrl": "https://mcp.highlyt.app/mcp"
    }
  }
}

Ground your agent in cited data

Highlyt MCP gives your agent tools. Koskamo gives it reviewed, cited facts to check its answers against. Add it as a second MCP server; public reads need no API key.

Connect Koskamo Browse datasets

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