Free tools to make stores work for AI agents.

curl -fsSLO https://www.arcreport.ai/arc-check.mjs
node arc-check.mjs yourstore.com                    # exit 1 if UCP or WebMCP breaks
node arc-check.mjs yourstore.com --require checkout  # can agents reach checkout?
node arc-check.mjs a.com b.com --require all --json

# .github/workflows/arc-check.yml
name: ARC agent-commerce check
on:
  push:
    branches: [main]
  schedule:
    - cron: "17 6 * * *"   # daily
  workflow_dispatch:
jobs:
  arc-check:
    runs-on: ubuntu-latest
    steps:
      - name: UCP profile and WebMCP still work
        run: |
          curl -fsSLO https://www.arcreport.ai/arc-check.mjs
          node arc-check.mjs yourstore.com --require ucp,webmcp --summary "$GITHUB_STEP_SUMMARY"

- uses: arcreport/arc-check@v1   # planned location
  with:
    host: yourstore.com
    require: ucp,webmcp

# Validate a UCP profile (live fetch + published schema + spec rules)
curl "https://www.arcreport.ai/api/ucp/validate?url=allbirds.com"

# Stored checkout check. Does not fetch the store. 404: No stored checkout check. Unknown, not a no.
curl "https://www.arcreport.ai/api/agent-checkout?url=https://allbirds.com"
# New check (JSON body only) when the stored check is missing or older than 24 hours. Under 24 hours returns the stored check:
curl -X POST "https://www.arcreport.ai/api/agent-checkout" -H "content-type: application/json" -d '{"url":"https://allbirds.com"}'

# Protocol Matrix: declared, valid, usable, transacts per protocol
curl "https://www.arcreport.ai/api/protocols"

# Stores where agents reached checkout in the last thirty days
curl "https://www.arcreport.ai/api/agent-checkout/stores?category=footwear&limit=10"

# Add stores to the open directory (up to 50)
curl -X POST "https://www.arcreport.ai/api/stores/submit" \
  -H "content-type: application/json" \
  -d '{"hosts":["yourstore.com"]}'

// Node 18+, Deno, Bun or the browser (CORS is open). No key.
const arc = (path) => fetch(`https://www.arcreport.ai${path}`).then((r) => r.json());

const ucp = await arc("/api/ucp/validate?url=allbirds.com");
console.log(ucp.valid, ucp.errors, ucp.warnings);

// GET returns the stored check and does not fetch the store. 404 if none is stored.
// POST /api/agent-checkout with {"url":"..."} runs a fresh fetch.
const store = await arc("/api/agent-checkout?url=" + encodeURIComponent("https://allbirds.com"));
console.log(store.ucpProfile, store.webmcp, store.cartLink, store.resultUrl);

// MCP over plain JSON-RPC
const rpc = await fetch("https://www.arcreport.ai/api/ask", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({ jsonrpc: "2.0", id: 1, method: "tools/call",
    params: { name: "protocol_matrix", arguments: { protocol: "ucp" } } }),
}).then((r) => r.json());
console.log(JSON.parse(rpc.result.content[0].text).rows[0]);

# Python 3, standard library only. No key.
import json, urllib.parse, urllib.request

ARC = "https://www.arcreport.ai"

def get(path):
    with urllib.request.urlopen(ARC + path, timeout=30) as r:
        return json.load(r)

ucp = get("/api/ucp/validate?url=allbirds.com")
print(ucp["valid"], [e["message"] for e in ucp["errors"]])

# GET returns the stored check and does not fetch the store. 404 if none is stored.
# POST /api/agent-checkout with {"url":"..."} runs a fresh fetch.
store = get("/api/agent-checkout?url=" + urllib.parse.quote("https://allbirds.com", safe=""))
print(store["ucpProfile"], store["webmcp"], store["cartLink"])

matrix = get("/api/protocols")
for row in matrix["rows"]:
    print(row["id"], {stage: v["percentage"] for stage, v in row["stages"].items()})

claude mcp add --transport http arc https://www.arcreport.ai/api/ask

{
  "mcpServers": {
    "arc": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://www.arcreport.ai/api/ask"]
    }
  }
}

{
  "mcpServers": {
    "arc": { "url": "https://www.arcreport.ai/api/ask" }
  }
}

{
  "servers": {
    "arc": { "type": "http", "url": "https://www.arcreport.ai/api/ask" }
  }
}