X402 Notary MCP vs Auth0 MCP Server

A side-by-side look at the X402 Notary MCP and Auth0 MCP Server MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.

X402 Notary MCP logoX402 Notary MCPSecurity · Local subprocess (stdio)Cryptographic receipts for AI outputs: notarize any model inference with a signed Ed25519 attestation, sha256 content hash, and Merkle chain-anchor on Base or Solana. $0.001 per call via x402 USDC micropayments; verification is free and needs no wallet. Notarizes the hash, never your prompts. npx -y @forgemeshlabs/x402-notary-mcp63GoodAuth: not declaredAuth0 MCP Server logoAuth0 MCP ServerSecurity · Local subprocess (stdio)Auth0 MCP Server: Manage Auth0 applications, APIs, actions, logs, and forms using natural language51GoodAuth: not declared

Verdict: choose X402 Notary MCP for security work as a local process; choose Auth0 MCP Server for security as a local process. You can also run both side by side in one mcpServers block.

Which MCP server should you choose?

X402 Notary MCP logoChoose X402 Notary MCP when

  • You need dedicated capabilities in the Security domain.
  • You prefer a local stdio subprocess transport.
  • You have the keys it needs: WALLET_PRIVATE_KEY, NOTARY_RAIL, NOTARY_BASE_URL, SOLANA_PRIVATE_KEY.
  • You want tools like notarize_inference, notarize_batch, verify_attestation.
Explore X402 Notary MCP

Auth0 MCP Server logoChoose Auth0 MCP Server when

  • You need dedicated capabilities in the Security domain.
  • You prefer a local stdio subprocess transport.
Explore Auth0 MCP Server

Feature & specification comparison

Rows where the two servers differ are marked.

SpecX402 Notary MCP logoX402 Notary MCPAuth0 MCP Server logoAuth0 MCP Server
CategorySecuritySecurity
Quality signal63/100 · Good51/100 · Good
Install commandConfirmedConfirmed
TransportLocal subprocess (stdio)Local subprocess (stdio)
AuthNot declaredNot declared
PricingNot declaredNot declared
Required env varsWALLET_PRIVATE_KEYNOTARY_RAILNOTARY_BASE_URLSOLANA_PRIVATE_KEYNone listed
Verified ownerCommunity listingCommunity listing
GitHub stars0121
Directory activity 2 views 0 installs 0 upvotes 2 views 0 installs 0 upvotes
Tools6Not listed

Tools & capabilities

X402 Notary MCP tools 6

  • notarize_inferenceGet a cryptographic receipt for one AI inference. Returns a signed Ed25519 attestation, sha256 content hash, and Merkle chain-anchor status for {prompt, response, model_id}. The notary does NOT store your prompt or response — only the hash is retained. Costs $0.001 USDC via x402 (requires WALLET_PRIVATE_KEY for a Base wallet).
  • notarize_batchNotarize up to 20 AI inferences in one call — one signed attestation per record. Ideal for audit trails and agent pipelines. Costs $0.005 USDC via x402 (requires WALLET_PRIVATE_KEY for a Base wallet).
  • verify_attestationFREE — verify any attestation issued by the notary. Supply the attestation_id plus either the original content ({prompt, response, model_id}) or its content_hash. Returns the Ed25519 signature check, hash comparison, and a Merkle inclusion proof once the batch is sealed. No wallet needed.
  • get_receiptFREE — fetch the public receipt for an attestation: content hash, model, timestamps, Ed25519 signature, and Merkle anchor proof. Raw prompt/response are never stored, so receipts contain proof material only. No wallet needed.
  • notary_statsFREE — live aggregate stats: total notarizations, 24h volume, top models by attestation count, sealed/anchored Merkle batches. No wallet needed.
  • notary_pubkeyFREE — the notary's Ed25519 public key (base64, raw 32 bytes) for fully offline signature verification. No wallet needed.

Auth0 MCP Server tools

No tool names declared yet. Check the project README from the listing page.

Ready-to-paste client configs

Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.

X402 Notary MCP

mcpServers (Claude Desktop / Cursor)
{
  "mcpServers": {
    "forgemeshlabs-x402-notary-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@forgemeshlabs/x402-notary-mcp"
      ],
      "env": {
        "WALLET_PRIVATE_KEY": "YOUR_WALLET_PRIVATE_KEY_HERE",
        "NOTARY_RAIL": "YOUR_NOTARY_RAIL_HERE",
        "NOTARY_BASE_URL": "YOUR_NOTARY_BASE_URL_HERE",
        "SOLANA_PRIVATE_KEY": "YOUR_SOLANA_PRIVATE_KEY_HERE"
      }
    }
  }
}

Auth0 MCP Server

mcpServers (Claude Desktop / Cursor)
{
  "mcpServers": {
    "auth0-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@auth0/auth0-mcp-server"
      ]
    }
  }
}

Frequently asked questions

X402 Notary MCP is categorized under Security and uses a local stdio subprocess. Auth0 MCP Server belongs to Security and uses a local stdio subprocess. Pick X402 Notary MCP for security work and Auth0 MCP Server for security.

Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.

X402 Notary MCP has no declared pricing — check the project's own site. Auth0 MCP Server has no declared pricing — check the project's own site. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.

Yes. MCP clients support multiple servers: add forgemeshlabs-x402-notary-mcp and auth0-mcp-server as separate keys in the same mcpServers object, and your assistant will call tools from either one.

On AllMCPs, X402 Notary MCP has a quality signal of 63/100 (Good) with 2 views, 0 installs and 0 GitHub stars. Auth0 MCP Server has 51/100 (Good) with 2 views, 0 installs and 121 GitHub stars.