OpenUnfurl MCP

OpenUnfurl is a zero-signup, anonymous link-preview API that exposes a single 'unfurl' tool via a remote MCP server. It allows AI agents to retrieve clean JSON metadata (title, description, image, favicon) for any public URL without requiring an account, API key, or OAuth. The server uses Streamable HTTP transport and parses static HTML only.

Endpoint and access

No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.

Community listingStreamable HTTPNo sign-inEndpoint checked 2026-11-07Published by SolvoHQ

MCP endpoint (Streamable HTTP)

https://openunfurl.vercel.app/api/mcp

Vendor documentation

What its tools do

1 tool, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.

Read-only (1)

unfurl

1 of 1 have a description · 1 of 1 declare behavior hints · 1 of 1 with parameters document them all

Checks and signals

Each line is separate evidence, not a trust score.

Passed Endpoint answered the live check · Nov 7, 2026, 12:21 AM UTC
Availability 1 of 1 checks passed in 30 days

What you can do with it

Retrieve link preview metadata for a public URL
Extract Open Graph and Twitter Card data
Fetch site favicon and description for autonomous agents

Source and maintenance

Community listingRegistry 0.1.0

mcp-registry: io.github.SolvoHQ/openunfurl@0.1.0 Source repository

Maintenance checked: Nov 6, 2026, 11:48 PM UTC

Protocol and capabilities

Server: openunfurl 0.1.0
MCP protocol negotiated in check: 2025-11-25
Tools: 1 advertised
Resources: Not advertised
Resource templates: Not advertised
Prompts: Not advertised

Server-advertised capabilities

{
  "tools": {}
}

Tools

1 advertised

unfurl

Advertised by the server during the last successful anonymous check.

Advertised read-onlyOpen-world

Fetch clean link-preview metadata (title, description, image, siteName, favicon, oembed) for any public URL. No signup, no API key. Static-HTML parse only (no JS/SPA render).

unfurl input schema

{
  "type": "object",
  "required": [
    "url"
  ],
  "properties": {
    "url": {
      "type": "string",
      "description": "The http(s) URL to unfurl"
    }
  }
}

unfurl annotations

{
  "readOnlyHint": true,
  "openWorldHint": true,
  "idempotentHint": true,
  "destructiveHint": false
}

Prompts

Not advertised

No prompt definitions available.

Resources

Not advertised

No resource 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).

2026-11-07: 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: 563 ms
95th percentile latency: 563 ms

Maintenance history

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

Nov 7, 2026, 12:21 AM UTC · probe · passed · 563 ms · metadata changed · 1 tool(s)

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 openunfurl-mcp https://openunfurl.vercel.app/api/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 openunfurl-mcp --url https://openunfurl.vercel.app/api/mcp

Cursor

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

Cursor configuration

{
  "mcpServers": {
    "openunfurl-mcp": {
      "url": "https://openunfurl.vercel.app/api/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).

Cline configuration

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

VS Code

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

VS Code configuration

{
  "servers": {
    "openunfurl-mcp": {
      "type": "http",
      "url": "https://openunfurl.vercel.app/api/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 openunfurl-mcp https://openunfurl.vercel.app/api/mcp

Claude Desktop

Open Claude Settings > Connectors > Add custom connector, enter this server URL and enable it for the conversation. This is a manual remote-connector handoff, not a desktop JSON configuration.

Claude Desktop configuration

https://openunfurl.vercel.app/api/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": {
    "openunfurl-mcp": {
      "serverUrl": "https://openunfurl.vercel.app/api/mcp"
    }
  }
}

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