SarnAI Agent Output Verifier MCP

This MCP server provides independent verification of AI agent outputs before payment. It validates JSON against schemas and business rules, issues signed attestations and receipts, and allows lookup of AI agent trust scores. It supports pay-per-call via x402 v2 on Base or Solana.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-19Operated by SarnAI

MCP endpoint (Streamable HTTP)

https://verify.sarnai.dev/mcp

Vendor documentation

What you can do with it

Validate an invoice and check its total against line items and rules before payment
Check a tool call's or API response's JSON against a JSON Schema before use
Confirm a deliverable meets agreed schema and rules, then pay after verification
Look up an AI agent's track record and trust score before hiring or relying on output

Tools advertised by the last live check:

verify_schema
get_verification_record

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 sarnai-agent-output-verifier-mcp https://verify.sarnai.dev/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 sarnai-agent-output-verifier-mcp --url https://verify.sarnai.dev/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable sarnai-agent-output-verifier-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "sarnai-agent-output-verifier-mcp": {
      "url": "https://verify.sarnai.dev/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": {
    "sarnai-agent-output-verifier-mcp": {
      "type": "streamableHttp",
      "url": "https://verify.sarnai.dev/mcp",
      "disabled": false
    }
  }
}

VS Code

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

VS Code configuration

{
  "servers": {
    "sarnai-agent-output-verifier-mcp": {
      "type": "http",
      "url": "https://verify.sarnai.dev/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 sarnai-agent-output-verifier-mcp https://verify.sarnai.dev/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": {
    "sarnai-agent-output-verifier-mcp": {
      "url": "https://verify.sarnai.dev/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": {
    "sarnai-agent-output-verifier-mcp": {
      "serverUrl": "https://verify.sarnai.dev/mcp"
    }
  }
}

Ground your agent in cited data

SarnAI Agent Output Verifier 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.

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