Housecarl
Housecarl Arbiter
Operational Open the console →
Docs

Use it from Claude (no code)

The fastest way in: connect Housecarl Arbiter to Claude on the web or your phone, then ask in plain language. Works on the free plan.

Add the connector

Housecarl Arbiter is a custom connector (a remote MCP server). Claude's free plan lets you add one, which is all you need. In Claude — on the web (claude.ai) or in the mobile app:

  1. Open Settings → Connectors (depending on your version this may read Customize → Connectors).
  2. Click Add custom connector, name it Housecarl Arbiter, and paste the Server URL below. Leave the advanced / OAuth fields blank.
  3. Click Add. The first time you use it, Claude opens a sign-in window — approve it and you're connected.
https://api.arbiter.housecarl.cloud/mcp/v1

The connector is tied to your Claude account, so adding it on the web makes it available in the mobile app too — and the other way round. No API key is needed for this path; sign-in is handled for you.

Then just ask

In any conversation, tap + → Connectors and switch on Housecarl Arbiter. The first time Claude reaches for a Housecarl Arbiter tool it asks your permission — allow it. Then talk to it normally:

"Use Housecarl Arbiter to investigate whether remote work lowers team productivity. Find the strongest sources on each side, weigh them, and give me a judged verdict."

"Read https://en.wikipedia.org/wiki/Cold_fusion, pull out the claims and the evidence it cites, run it through Housecarl Arbiter, and tell me where the verdict is shaky."

Each investigation lands in your console under Sessions, where you can walk the reasoning tree and read the scored verdict. Building your own tool instead? The REST / MCP API is covered in Connect your tool.