@crafter/amicus

Agent-first MCP server + CLI for Peruvian law. Search the open legalize-pe corpus (21k+ norms, national + 26 regional jurisdictions), fetch full texts, and ask grounded questions that answer with citations to the official source, all over the hosted amicus API.

This is the lightweight, hosted client: no 600MB corpus clone, hybrid (semantic + full-text) retrieval, and a grounded ask tool. Not legal advice.

CLI

npx @crafter/amicus search "prescripción adquisitiva" --jurisdiction pe
npx @crafter/amicus get pe/RM-0702-2026-IN
npx @crafter/amicus ask "¿puedo quedarme con un terreno si lo ocupo varios años?"
npx @crafter/amicus jurisdictions

Add --json to any command for machine output.

MCP server

Tools: search_norms, get_norm, ask_legal (grounded + cited), list_jurisdictions.

Claude Desktop / Cursor / Codex

{
  "mcpServers": {
    "legalize-pe": {
      "command": "npx",
      "args": ["-y", "@crafter/amicus", "mcp"],
      "env": { "AMICUS_API_KEY": "amicus_sk_..." }
    }
  }
}

(The MCP binary is amicus-mcp; the example uses the mcp subcommand form if your client runs the package directly. You can also point command at amicus-mcp.)

Auth

search_norms and get_norm are public. ask_legal needs an API key:

export AMICUS_API_KEY="amicus_sk_..."   # from amicus.crafter.ing
export AMICUS_API_URL="https://amicus.crafter.ing"   # optional override

Why hosted

The corpus MCP (@legalize-pe/mcp) is keyword-only and clones the full corpus. This client hits amicus: hybrid retrieval (pgvector + FTS) and grounded answers with source links, metered per API key.