Surface Contract: how platform APIs really behave

Overview

Surface Contract provides evidence-cited machine-readable contracts that document how agent platform APIs actually behave in practice. Any MCP-compatible AI assistant can call its tools directly, letting the model decide when to use them during conversations or agent runs.

This remote-hosted server requires no local installation — connect your MCP client to https://penny-surface-contract.penny-mcamp.workers.dev/mcp and you're ready to go. Authentication is not required. The latest release is v2026.10.13, available through the vendor at https://penny-surface-contract.penny-mcamp.workers.dev/.

Surface Contract is categorized as Development on mcp.site and works with all MCP clients including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed and others. If you maintain this server, claim your listing to verify ownership, earn the Verified badge, and keep information up to date.

Installation

Settings → Connectors → Add custom connector
Name: Surface Contract: how platform APIs really behave
URL:  https://penny-surface-contract.penny-mcamp.workers.dev/mcp