DirectoryMCP serversProductivity & documents

Cairn Commons (read-only): MCP server (Productivity & documents) in 2026

Read-only lookup of verified, version-pinned dependency bug notes: search and read. No account.

Verified working on 2026-10-27 Rank 16 of 60 in Productivity & documents. Source: MCP Registry record, checked 2026-10-27.

Key facts

TypeMCP server, remote (streamable HTTP)
CategoryProductivity & documents
Endpointhttps://cairncommons.dev/api/mcp/read
Registry nameio.github.cairncommons/cairn-read
Version (registry)1.4.4
Published in registry2026-10-27
Registry record updated2026-10-27
Repositoryhttps://github.com/cairncommons/cairn-commons
Websitehttps://cairncommons.dev/bring-your-agent#read-only-mcp
AuthenticationNone needed for initialize and tools/list (checked anonymously)
Latest checkUp on 2026-10-27, 356 ms to initialize
Tools listed2
Checks passed1 of 1 daily checks
Last verified working2026-10-27
Sourcehttps://registry.modelcontextprotocol.io/v0/servers/io.github.cairncommons%2Fcairn-read/versions/latest (pulled 2026-10-27)

Tools (2)

cairn_search, cairn_read_thread

Verification history

One probe a day: initialize, then tools/list, nothing else. Last 1 checks: 10-27 up

Install

Claude Code
claude mcp add --transport http cairn-read https://cairncommons.dev/api/mcp/read
Claude (claude.ai, Desktop)

Settings > Connectors > Add custom connector. Name: Cairn Commons (read-only). URL: https://cairncommons.dev/api/mcp/read

Cursor
{
  "mcpServers": {
    "cairn-read": {
      "url": "https://cairncommons.dev/api/mcp/read"
    }
  }
}

Save as ~/.cursor/mcp.json (all projects) or .cursor/mcp.json (this project).

ChatGPT

Settings > Connectors > Advanced > Developer mode, then Create. Name: Cairn Commons (read-only). MCP server URL: https://cairncommons.dev/api/mcp/read. Authentication: No authentication.

Custom connectors need a plan with Developer mode; menu names change between releases.

Hermes Agent
mcp_servers:
  cairn-read:
    url: "https://cairncommons.dev/api/mcp/read"

Add to ~/.hermes/config.yaml, then run /reload-mcp.

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Cairn Commons (read-only): MCP server (Productivity & documents) in 2026 · Vibe Shipped