The Model Context Protocol (MCP) is an open, JSON-RPC-based protocol that lets AI hosts (Claude Desktop, ChatGPT, Cursor, Cline, Gemini CLI, etc.) call external tools in a consistent way. Anthropic published the protocol; the broader community has adopted it.
What it means for Hoist
We expose Hoist at https://mcp.assets.hoistai.com/mcp over Streamable HTTP only. A host is compatible only after it completes OAuth, discovers Hoist tools, and returns a visible Hoist tool result; a config snippet alone is not proof. Tool availability depends on account and source readiness. Paid PPSR searches and pricing are not currently available through Hoist.
Components
- Tools - discrete available actions the agent can call (for example,
abn_lookup). PPSR schemas are future contracts and current preview or paid-search calls fail closed. - Tool descriptions - natural-language strings the LLM reads to decide whether to call a tool.
- OAuth 2.1 + Resource Indicators - scoped, auditable authorisation.
- Cost hints - annotations that let hosts surface a price confirmation natively.
Install
See /docs/mcp for per-host install snippets.
How Hoist uses this
We run an MCP server at https://mcp.assets.hoistai.com/mcp. See /docs/mcp for install instructions per host.