Diagnose x402 seller endpoints: what is wrong with your 402 challenge, and how to fix it.
Setup
Choose your client, copy the config, then fill in any required environment variables.
claude mcp add --transport http x402-doctor-twelvepermissions https://x402-doctor.tsharpe.workers.dev/mcp~/.codex/config.toml
[mcp_servers.x402-doctor-twelvepermissions]
url = "https://x402-doctor.tsharpe.workers.dev/mcp"
# codex mcp add x402-doctor-twelvepermissions --url https://x402-doctor.tsharpe.workers.dev/mcp~/.cursor/mcp.json
{
"mcpServers": {
"x402-doctor-twelvepermissions": {
"url": "https://x402-doctor.tsharpe.workers.dev/mcp"
}
}
}.vscode/mcp.json
{
"servers": {
"x402-doctor-twelvepermissions": {
"type": "http",
"url": "https://x402-doctor.tsharpe.workers.dev/mcp"
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"x402-doctor-twelvepermissions": {
"httpUrl": "https://x402-doctor.tsharpe.workers.dev/mcp"
}
}
}claude_desktop_config.json · Customize › Connectors › Add custom connector
{
"mcpServers": {
"x402-doctor-twelvepermissions": {
"command": "npx",
"args": [
"-y",
"mcp-remote",
"https://x402-doctor.tsharpe.workers.dev/mcp"
]
}
}
}.trae/mcp.json
{
"mcpServers": {
"x402-doctor-twelvepermissions": {
"url": "https://x402-doctor.tsharpe.workers.dev/mcp"
}
}
}