PUBLIC DATASET MCP

Query the public index from your LLM

ARC Report ships a remote Model Context Protocol server over Streamable HTTP. No API key, no account — per-IP rate limits only (60 requests/minute). Every response includes a source_url and last_updated timestamp for citation.

Public server URL

https://www.arcreport.ai/api/mcp
This server contains public index data only. Agency portfolio health, private reports, regressions, and fix prompts use the authenticated Agency MCP.

Tools

get_brand_status(domain)

Per-agent access for all 9 tracked agents, platform, structured data quality, llms.txt, ARC Score, last scanned.

search_brands(query?, category?, platform?, blocking_agent?, allowing_agent?)

Filtered, paginated search over the full index.

get_recent_changes(days=7, category?)

Confirmed changelog entries with before/after values.

get_agent_stats(agent?)

% of the index blocking each agent, by category, with week-over-week deltas.

compare_brands(domains[])

Side-by-side matrix for up to 10 brands.

Resources: arc://methodology (scan design + score formula) and arc://insights/latest (headline stats from the latest scan).

Claude.ai (custom connector)

  1. Open Settings → Connectors → Add custom connector.
  2. Name it ARC Report and paste the server URL above.
  3. Leave authentication empty (none required) and save.
  4. Enable the connector in any chat via the search-and-tools menu.

Claude Desktop

Settings → Developer → Edit Config, then add to claude_desktop_config.json:

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

(Desktop launches local servers; mcp-remote bridges to the remote URL. On paid plans you can instead add it as a custom connector like Claude.ai above.)

Claude Code

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

Then ask Claude Code anything about the dataset — it will call the tools directly.

Three prompts to try

Which fashion brands block ClaudeBot but allow GPTBot? Compare the top 5 side by side.
What changed in AI agent access across e-commerce in the last 14 days? Summarize the biggest blocks and opens.
Compare nike.com, adidas.com, and zara.com: who is most open to AI shopping agents, and what's driving the ARC Score difference?

Raw protocol (curl)

curl -X POST https://www.arcreport.ai/api/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"get_brand_status","arguments":{"domain":"nike.com"}}}'
Data is licensed CC BY 4.0 — attribution required (see /data). Prefer plain HTTP? Use the JSON API or markdown variants.