Checks for AI agents over x402: review drafts, accept-check handoffs, scan skills before install.
Setup
Choose your client, copy the config, then fill in any required environment variables.
Local
claude mcp add crosscheck --env CROSSCHECK_WALLET_KEY='<CROSSCHECK_WALLET_KEY>' -- npx -y crosscheckapi~/.codex/config.toml
[mcp_servers.crosscheck]
command = "npx"
args = ["-y", "crosscheckapi"]
env = { CROSSCHECK_WALLET_KEY = "<CROSSCHECK_WALLET_KEY>" }
# codex mcp add crosscheck --env CROSSCHECK_WALLET_KEY='<CROSSCHECK_WALLET_KEY>' -- npx -y crosscheckapi~/.cursor/mcp.json
{
"mcpServers": {
"crosscheck": {
"command": "npx",
"args": [
"-y",
"crosscheckapi"
],
"env": {
"CROSSCHECK_WALLET_KEY": "<CROSSCHECK_WALLET_KEY>"
}
}
}
}.vscode/mcp.json
{
"servers": {
"crosscheck": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"crosscheckapi"
],
"env": {
"CROSSCHECK_WALLET_KEY": "<CROSSCHECK_WALLET_KEY>"
}
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"crosscheck": {
"command": "npx",
"args": [
"-y",
"crosscheckapi"
],
"env": {
"CROSSCHECK_WALLET_KEY": "<CROSSCHECK_WALLET_KEY>"
}
}
}
}claude_desktop_config.json
{
"mcpServers": {
"crosscheck": {
"command": "npx",
"args": [
"-y",
"crosscheckapi"
],
"env": {
"CROSSCHECK_WALLET_KEY": "<CROSSCHECK_WALLET_KEY>"
}
}
}
}.trae/mcp.json
{
"mcpServers": {
"crosscheck": {
"command": "npx",
"args": [
"-y",
"crosscheckapi"
],
"env": {
"CROSSCHECK_WALLET_KEY": "<CROSSCHECK_WALLET_KEY>"
}
}
}
}Remote
claude mcp add --transport http crosscheck https://crosscheckapi.com/mcp~/.codex/config.toml
[mcp_servers.crosscheck]
url = "https://crosscheckapi.com/mcp"
# codex mcp add crosscheck --url https://crosscheckapi.com/mcp~/.cursor/mcp.json
{
"mcpServers": {
"crosscheck": {
"url": "https://crosscheckapi.com/mcp"
}
}
}.vscode/mcp.json
{
"servers": {
"crosscheck": {
"type": "http",
"url": "https://crosscheckapi.com/mcp"
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"crosscheck": {
"httpUrl": "https://crosscheckapi.com/mcp"
}
}
}claude_desktop_config.json · Customize › Connectors › Add custom connector
{
"mcpServers": {
"crosscheck": {
"command": "npx",
"args": [
"-y",
"mcp-remote",
"https://crosscheckapi.com/mcp"
]
}
}
}.trae/mcp.json
{
"mcpServers": {
"crosscheck": {
"url": "https://crosscheckapi.com/mcp"
}
}
}Environment variables
CROSSCHECK_WALLET_KEY
Replace the placeholders with your own credentials and keep them out of version control.