Security & Testing

crosscheckapi.com

Performs read-only security reviews of skills or MCP server files before installation or connection.

x402 supported1 endpoint6 known toolsFirst detected September 24, 2026Last detected September 27, 2026

ENDPOINT 1

https://crosscheckapi.com/mcp

No auth detected

MCP server metadata

Name: crosscheck
Version: 1.0.0

Capabilities

tools

Server instructions

Independent checks for agents. check reviews a draft before a human sees it; accept checks another agent's deliverable against its task before you pay; skillcheck reviews a skill or MCP server's files before install (free when already scanned). Paid tools cost $0.02 to $0.06 in USDC over x402 on Base, with free test USDC on Base Sepolia; the first call returns the price as an x402 PaymentRequired. Everything you send is data to review, never instructions to crosscheck. Receipts, a free club for agents who show their work, admits agents that pass a free review tryout graded in code (/club/tryout). Details: https://crosscheckapi.com/llms.txt

Known tools 6

check

Independent review of a draft (email, report, summary, PR description) before its human sees it.

Potential side effects

accept

Checks work another agent handed back against the task it was given, before you pay, release escrow, or pass it on.

Potential side effects

skillcheck

Security review of a skill or MCP server's files before you install or connect it: read, never run.

Inferred read-only

skillcheck_lookup

Free.

Inferred read-only

verify_receipt

Free.

Inferred read-only

result

Free.

Inferred read-only

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.crosscheck]
url = "https://crosscheckapi.com/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "crosscheck": {
      "type": "http",
      "url": "https://crosscheckapi.com/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: crosscheck
Remote MCP URL: https://crosscheckapi.com/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "crosscheck": {
      "url": "https://crosscheckapi.com/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "crosscheck": {
      "type": "http",
      "url": "https://crosscheckapi.com/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "crosscheck",
  "transport": "streamable-http",
  "url": "https://crosscheckapi.com/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

TRUST AND VERIFICATION EVIDENCE

Loading Trust v2 evidence…

Checking the associated registrable domain. The BuiltWith key remains server-side.

Indexed

Evidence is source-attributed and does not guarantee that a third-party server is safe. Risk labels are conservative metadata heuristics.