How to Use Perplexity with Descrybe Legal Engine for Source-Grounded Legal Research
Perplexity can work as a conversational research surface, but legal research still depends on primary law, citation checks, quote verification, treatment review, and source inspection. Descrybe Legal Engine can be added to Perplexity as a custom MCP connector so Perplexity can use Descrybe legal research tools and return source-law material users can inspect.
Why use Perplexity with Descrybe
Perplexity can be a useful place to ask questions, follow a research thread, and move quickly from one issue to the next. For legal work, though, the important question is not only whether Perplexity can give a fluent answer. It is whether the answer is close enough to legal sources for a human researcher to inspect.
Descrybe Legal Engine adds that source-focused layer. When it is connected as a Perplexity custom connector, Perplexity can ask Descrybe for legal research tasks such as case-law search, citation lookup, quote verification, treatment checks, citing authorities, and source review.
What changes when Descrybe is connected
Perplexity remains the conversational workspace. Descrybe supplies the legal research tools. That distinction matters because legal research is not just answer generation; it is a workflow for finding, checking, and reading authority.
With Descrybe connected, a Perplexity chat can move from a legal question into focused source work instead of relying only on general model context or open-web material.
- Search case law by legal issue, concept, or fact pattern.
- Look up cases by citation, name, or partial reference.
- Retrieve case details, relevant passages, summaries, and source links.
- Verify whether quoted language appears in a cited case.
- Review treatment signals and citing authorities.
- Search source-law material where Descrybe coverage is available.
- Keep the source trail visible enough for human review.
Setup in plain English
Descrybe Legal Engine connects to Perplexity as a custom MCP connector. You need an active Descrybe subscription with Legal Engine or Platform access, and you need Perplexity access with custom connectors enabled.
The setup guide walks through the screen-by-screen flow. In short, sign in to Descrybe in the same browser, add a custom connector in Perplexity, name it Descrybe Legal Engine, and use the MCP server URL https://mcp.descrybe.com/mcp.
If Perplexity shows advanced settings, leave Authentication set to OAuth with Client ID and Client Secret blank, leave Transport set to Streamable HTTP, and leave Network Access set to Public. Perplexity labels may change over time, so follow the current connector UI while keeping those settings in mind.
Start the chat with Descrybe selected
After the connector is added and authorized, start a fresh Perplexity chat. Select Descrybe Legal Engine before your first message by typing @ and choosing Descrybe Legal Engine from the connector menu.
Starting this way makes the workflow easier to audit. It gives you a clearer signal that Perplexity is asking Descrybe for legal research rather than answering only from general context.
Useful starting prompts
Good Perplexity prompts make the source task explicit. Instead of asking for a broad legal conclusion, ask Descrybe to find, check, or retrieve the legal material you need to inspect.
- @Descrybe Legal Engine What legal research tools are available through Descrybe Legal Engine?
- @Descrybe Legal Engine Find cases about this issue in the relevant jurisdiction and include Descrybe links for the cases you find.
- @Descrybe Legal Engine Look up this citation and summarize the case details I should verify.
- @Descrybe Legal Engine Check whether this case still appears to be good law and find later cases that discuss it.
- @Descrybe Legal Engine Verify this quote from the cited case and show me what source text I should inspect.
What to check before relying on the answer
Descrybe helps Perplexity reach legal research tools, but the answer still needs review. A legal result is stronger when the researcher can inspect the authority behind it.
- Confirm that each cited case exists and matches the citation or case name.
- Check the court, date, jurisdiction, and procedural context.
- Read the source passage before relying on a proposition.
- Verify quoted language against the case text.
- Review treatment and citing authorities before treating a case as strong support.
- Open important Descrybe source links and read the underlying material.
What this workflow does not replace
Descrybe Legal Engine does not make Perplexity a lawyer, does not make every AI answer correct, and does not remove the need for source review. It is a legal research tool layer for finding and checking legal source material inside a Perplexity conversation.
Use Perplexity to work through the question. Use Descrybe to bring legal research tools and source-law material into the chat. Use human judgment before filing, advising, publishing, or relying on the result.