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MCP prompts

Prompts are versioned, parameterised system-prompt templates that an MCP client surfaces as slash commands. They force the LLM workflow into a clean path — mandatory tool use, ban on invented citations, defined answer structure.

Lawbster ships three prompts. They are public — no auth, no quota — because they hold no customer data and trigger no DB calls.

Structured research answer with footnoted citations.

Parameter Values Default
jurisdiction DE, EU, DE+EU DE+EU
depth thorough, quick thorough

Enforces:

  • at least one legal_search or legal_lookup call before any substantive claim
  • footnote citations with norm shortcode and date
  • explicit "no relevant norm found" marker when nothing matches
  • ban on "to my knowledge" phrasings

Example call in Claude Desktop:

/legal_research jurisdiction=DE+EU depth=thorough

Question: What duties does a controller have following a data breach under GDPR?

/citation_resolve

Resolves a single citation to its verified full text.

Parameter Values Default
citation string (required)

Calls legal_lookup on the given citation and returns full text with hierarchy and version date — no interpretation. Perfect when the user wants "just the text".

Example:

/citation_resolve citation="§ 823 BGB"

/compare_de_eu

Contrasts German and EU regulation and names the relationship (transposition, supplementation, gold-plating, standalone).

Parameter Values Default
topic string (required)

Enforces:

  • one legal_search jurisdiction=de and one legal_search jurisdiction=eu
  • explicit relationship label: Does German law transpose an EU rule? Goes beyond it? Is it DE-only, EU-only, or two-sided?
  • citations for both sides

Example:

/compare_de_eu topic="data retention of telecommunications metadata"

Availability per client

Client Prompts
Claude Desktop ✅ Show up as /legal_research, /citation_resolve, /compare_de_eu
Claude.ai (web) ✅ Slash commands in the connector dropdown
Copilot Studio ✅ Via custom connector
Cursor ⚠️ Limited prompt support (copy manually)
ChatGPT ⚠️ No native prompt support in custom connectors yet

Custom prompts?

Lawbster prompts are public and static — we don't host customer-specific prompts. To layer customer-specific system prompts on Lawbster, build them client-side (Cursor workflow, Copilot Studio topic trigger, …).