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Surface Contract: platform API behavior and x402 pre-payment checks

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Surface contracts: API behavior evidence, x402 pre-payment check, MCP server preflight

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Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http surface-contract-platform-api-behavior-a 'https://penny-surface-contract.penny-mcamp.workers.dev/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "surface-contract-platform-api-behavior-a": {
            "type": "http",
            "url": "https://penny-surface-contract.penny-mcamp.workers.dev/mcp"
        }
    }
}

Frequently asked questions

What is Surface Contract: platform API behavior and x402 pre-payment checks?

Surface contracts: API behavior evidence, x402 pre-payment check, MCP server preflight

How do I install Surface Contract: platform API behavior and x402 pre-payment checks?

It runs as a remote server. In Claude Code: claude mcp add --transport http surface-contract-platform-api-behavior-a 'https://penny-surface-contract.penny-mcamp.workers.dev/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Surface Contract: platform API behavior and x402 pre-payment checks need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Who maintains Surface Contract: platform API behavior and x402 pre-payment checks?

It is published by dev.workers.penny-mcamp.penny-surface-contract. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.