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.
/legal_research¶
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_searchorlegal_lookupcall 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:
/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=deand onelegal_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:
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, …).