LegalQuants — Claude Code plugin

AI access to the LegalQuants community knowledge from your terminal — both the raw chat archive and a curated synthesis vault. Ask natural questions across everything, and — if you're a member — get a personalised experience that knows your contributions.

Members-only. You need a published LegalQuants profile (legalquants.com) to sign in.

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Install

In Claude Code:

/plugin marketplace add https://github.com/LegalQuants/lq-plugin.git
/plugin install lq@legalquants

Use the full HTTPS URL above. The owner/repo shorthand clones over SSH and fails with Host key verification failed unless you've set up a GitHub SSH key — HTTPS needs no auth for this public repo.

Sign in (members)

Sign-in is native OAuth through the lq-mcp connector — no code to type, no token to paste.

1. Run /mcp, select lq-mcp, and choose Authenticate.
2. Your browser opens the LegalQuants sign-in. Use whichever account your published profile uses — Google, GitHub, or email link — then click Authorize.
3. Back in Claude Code, run:

/lq:start

If your profile is published and linked, you'll get an "I know you" greeting derived from your chat activity. Then just ask anything about the community.

You stay signed in — Claude Code refreshes the session silently in the background. /lq:start --signin re-triggers sign-in (e.g. to switch accounts); /lq:start --signout signs you out.

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What you get

• /lq:start (bare /lq is a kept alias) — cold-start interview + personalised orientation. Active members get an "I know you" greeting (no questions); quieter/guest members get a short interview. A plain question spans both corpora automatically — results are labelled by source.
• /lq:ask "<question>" — cross-source synthesis: fans out over both sources in parallel and merges into one cited answer. Use for "what's the community's take on X — and where's it from / what's the latest?"
• /lq:assess — assessment workflow (for invited candidates).
• One connector (lq-mcp) over the community chat archive + curated synthesis vault — read-only; one sign-in covers it. Tools take source: chat | brain | all (default all), so you don't pick a corpus up front; a plain query spans both and results are labelled by source.
• Auto-loaded guidance — one skill priming the model on the corpus's idioms.

What it does NOT do

• No writes — lq-mcp is read-only.
• No real-time ingest — chat is a sanitized snapshot; the brain vault is rebuilt periodically by operators.
• Never exposes another member's identity — /api/whoami returns only your own.

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How sign-in works (under the hood)

LegalQuants sign-in (Google / GitHub / email) → your published profile → a private builder ID → a short-lived access token + rotating refresh token. Claude Code stores the tokens securely (system keychain) and refreshes them silently; the lq-mcp server verifies the access token keylessly (against the site's public keys — no service-account key) and returns only your own builder ID + first-name greeting. Your builder ID is never shown to other members.

Troubleshooting

• Commands don't appear after install — restart your Claude Code session (slash commands load at start).
• Sign-in rejected — your LegalQuants profile must be published. Publish it at legalquants.com, then run the connector's Authenticate again (/mcp → lq-mcp).
• MCP 401 — run the connector's Authenticate again (/mcp → lq-mcp), then start a fresh session.
• Your terminal shows a short code to type at legalquants.com/device — you're on an old plugin version. Run /plugin update lq@legalquants, restart the session, then Authenticate as above.

Privacy

The corpus is sanitized — authors appear as stable builder-NNN pseudo-IDs, never real names. Your sign-in tokens are your credential on your machine (system keychain); the server never reads your local files.

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Questions: j.tso@legalquants.com · Built by LegalQuants.