Koskamo

FairValid MCP

FairValid MCP allows AI agents to verify email addresses, track verification jobs, read results, and check workspace credits. It supports OAuth and API key authentication for integration with clients like ChatGPT, Claude, and Codex.

Visit FairValid

Endpoint and access

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

FairValid MCP logo, by FairValidCommunity listingStreamable HTTPOAuth sign-inEndpoint checked 2026-11-01Published by FairValid
You need:For API-key clients, create a labeled Test key in API keys as a workspace Owner or Manager.
MCP endpoint (Streamable HTTP)
https://mcp.fairvalid.com/mcp
Vendor documentation

Checks and signals

Each line is separate evidence, not a trust score.

  • Passed Endpoint answered the live check ·
  • Availability 1 of 1 checks passed in 30 days

What you can do with it

  • Verify single or batch email addresses
  • Track verification job status and results
  • Check workspace credit balance
  • Integrate email validation into AI agent workflows

Source and maintenance

Community listingRegistry 1.0.0
mcp-registry: io.github.moonlitnayeem/fairvalid@1.0.0Source repositoryProject website
Last repository push
Latest release
v1.0.0
Maintenance checked

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 (4 of 4 answered).

  1. 2026-11-02: 3 of 3 checks answered
  2. 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
738 ms
95th percentile latency
738 ms

Maintenance history

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

  • · repository · passed · metadata changed · updated
  • · backfill · recorded · Pre-expansion baseline; unobserved rich metadata remains unknown
  • · probe · passed · 738 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 fairvalid-mcp https://mcp.fairvalid.com/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 fairvalid-mcp --url https://mcp.fairvalid.com/mcp

Cursor

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

Cline

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

VS Code

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

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