Koskamo

Onlay MCP

Onlay MCP allows AI agents to publish HTML or Markdown documents to a stable link, enabling readers to comment on or edit the content directly. The agent can then pull this feedback as structured data, revise the document, and republish it to the same link, facilitating a collaborative review loop for plans, reports, and mockups.

Visit Onlay

Endpoint and access

OAuth sign-in: the first time you connect, your client opens the vendor's own authorization prompt in a browser.

Onlay MCP logo, by OnlayVendor evidenceStreamable HTTPOAuth sign-inEndpoint checked 2026-11-02Operated by Onlay
You need:You’ll need to sign in the first time you run the MCP server.Use an API key instead
MCP endpoint (Streamable HTTP)
https://api.onlay.io/mcp
Vendor documentation

Checks and signals

Each line is separate evidence, not a trust score.

  • Passed Endpoint answered the live check ·
  • Passed Official MCP Registry namespace is tied to onlay.io ·
  • Passed Endpoint is on the registry namespace domain ·
  • Availability 1 of 1 checks passed in 30 days

What you can do with it

  • Publish HTML or Markdown to a stable link for review
  • Pull reader comments and edits back to the agent
  • Revise documents based on collaborative feedback
  • Resolve comment threads and publish updated versions

Source and maintenance

Vendor evidenceRegistry 1.0.0
mcp-registry: io.onlay/onlay@1.0.0Project website

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

90-day uptime

A lightweight connection check about every six hours, sampled on hosts with many listings. It shows the server answered, not that its tools work.

Too few checks for a percentage yet (1 of 1 answered).

  1. 2026-11-03: 1 of 1 checks answered

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks
1 of 1 (100%)
Average latency
201 ms
95th percentile latency
201 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · probe · passed · 201 ms · metadata changed · refuses unauthenticated initialize (HTTP 401)

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 the remote server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http onlay-mcp https://api.onlay.io/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 onlay-mcp --url https://api.onlay.io/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable onlay-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "onlay-mcp": {
      "url": "https://api.onlay.io/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).
Cline configuration
{
  "mcpServers": {
    "onlay-mcp": {
      "type": "streamableHttp",
      "url": "https://api.onlay.io/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start onlay-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "onlay-mcp": {
      "type": "http",
      "url": "https://api.onlay.io/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 onlay-mcp https://api.onlay.io/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": {
    "onlay-mcp": {
      "url": "https://api.onlay.io/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": {
    "onlay-mcp": {
      "serverUrl": "https://api.onlay.io/mcp"
    }
  }
}

Let your agent find its tools

Find servers like Onlay MCP from your agent. Add Koskamo once to search the index for endpoints, access requirements, and client setup. Public discovery needs no key.

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Do you run Onlay MCP?

Prove ownership with a DNS record, a well-known file, or your Official MCP Registry entry, and your edits publish immediately. Proofs are re-checked weekly; admins can still hide or remove a listing.

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